| Message ID | 153365625652.19074.8434946780002619802.stgit@localhost.localdomain (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Introduce lockless shrink_slab() | expand |
On Tue, 07 Aug 2018 18:37:36 +0300 Kirill Tkhai <ktkhai@virtuozzo.com> wrote: > This patch kills all CONFIG_SRCU defines and > the code under !CONFIG_SRCU. Can you add the rationale for removing the SRCU config in the change log please. Thanks! -- Steve > > Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com> > --- > drivers/base/core.c | 42 -------------------- > include/linux/device.h | 2 - > include/linux/rcutiny.h | 4 -- > include/linux/srcu.h | 5 -- > kernel/notifier.c | 3 - > kernel/rcu/Kconfig | 12 +----- > kernel/rcu/tree.h | 5 -- > kernel/rcu/update.c | 4 -- > .../selftests/rcutorture/doc/TREE_RCU-kconfig.txt | 5 -- > 9 files changed, 3 insertions(+), 79 deletions(-) > >
Hi Kirill, On Tue, 07 Aug 2018 18:37:36 +0300 Kirill Tkhai <ktkhai@virtuozzo.com> wrote: > > This patch kills all CONFIG_SRCU defines and > the code under !CONFIG_SRCU. > > Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com> > --- > drivers/base/core.c | 42 -------------------- > include/linux/device.h | 2 - > include/linux/rcutiny.h | 4 -- > include/linux/srcu.h | 5 -- > kernel/notifier.c | 3 - > kernel/rcu/Kconfig | 12 +----- > kernel/rcu/tree.h | 5 -- > kernel/rcu/update.c | 4 -- > .../selftests/rcutorture/doc/TREE_RCU-kconfig.txt | 5 -- > 9 files changed, 3 insertions(+), 79 deletions(-) You left quite a few "select SRCU" statements scattered across Kconfig files: $ git grep -l 'select SRCU' '*Kconfig*' arch/arm/kvm/Kconfig arch/arm64/kvm/Kconfig arch/mips/kvm/Kconfig arch/powerpc/kvm/Kconfig arch/s390/kvm/Kconfig arch/x86/Kconfig arch/x86/kvm/Kconfig block/Kconfig drivers/clk/Kconfig drivers/cpufreq/Kconfig drivers/dax/Kconfig drivers/devfreq/Kconfig drivers/hwtracing/stm/Kconfig drivers/md/Kconfig drivers/net/Kconfig drivers/opp/Kconfig fs/btrfs/Kconfig fs/notify/Kconfig fs/quota/Kconfig init/Kconfig kernel/rcu/Kconfig kernel/rcu/Kconfig.debug mm/Kconfig security/tomoyo/Kconfig
Hi Kirill, On Tue, 07 Aug 2018 18:37:36 +0300 Kirill Tkhai <ktkhai@virtuozzo.com> wrote: > > This patch kills all CONFIG_SRCU defines and > the code under !CONFIG_SRCU. > > Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com> So what sort of overheads (in terms of code size and performance) are we adding by having SRCU enabled where it used not to be?
On Tue 07-08-18 18:37:36, Kirill Tkhai wrote: > This patch kills all CONFIG_SRCU defines and > the code under !CONFIG_SRCU. The last time somebody tried to do this there was a pushback due to kernel tinyfication. So this should really give some numbers about the code size increase. Also why can't we make this depend on MMU. Is anybody else than the reclaim asking for unconditional SRCU usage? Btw. I totaly agree with Steven. This is a very poor changelog. It is trivial to see what the patch does but it is far from clear why it is doing that and why we cannot go other ways.
On 08.08.2018 04:05, Stephen Rothwell wrote: > Hi Kirill, > > On Tue, 07 Aug 2018 18:37:36 +0300 Kirill Tkhai <ktkhai@virtuozzo.com> wrote: >> >> This patch kills all CONFIG_SRCU defines and >> the code under !CONFIG_SRCU. >> >> Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com> >> --- >> drivers/base/core.c | 42 -------------------- >> include/linux/device.h | 2 - >> include/linux/rcutiny.h | 4 -- >> include/linux/srcu.h | 5 -- >> kernel/notifier.c | 3 - >> kernel/rcu/Kconfig | 12 +----- >> kernel/rcu/tree.h | 5 -- >> kernel/rcu/update.c | 4 -- >> .../selftests/rcutorture/doc/TREE_RCU-kconfig.txt | 5 -- >> 9 files changed, 3 insertions(+), 79 deletions(-) > > You left quite a few "select SRCU" statements scattered across Kconfig > files: > > $ git grep -l 'select SRCU' '*Kconfig*' > arch/arm/kvm/Kconfig > arch/arm64/kvm/Kconfig > arch/mips/kvm/Kconfig > arch/powerpc/kvm/Kconfig > arch/s390/kvm/Kconfig > arch/x86/Kconfig > arch/x86/kvm/Kconfig > block/Kconfig > drivers/clk/Kconfig > drivers/cpufreq/Kconfig > drivers/dax/Kconfig > drivers/devfreq/Kconfig > drivers/hwtracing/stm/Kconfig > drivers/md/Kconfig > drivers/net/Kconfig > drivers/opp/Kconfig > fs/btrfs/Kconfig > fs/notify/Kconfig > fs/quota/Kconfig > init/Kconfig > kernel/rcu/Kconfig > kernel/rcu/Kconfig.debug > mm/Kconfig > security/tomoyo/Kconfig Yeah, thanks, Stephen.
On 08.08.2018 04:08, Stephen Rothwell wrote: > Hi Kirill, > > On Tue, 07 Aug 2018 18:37:36 +0300 Kirill Tkhai <ktkhai@virtuozzo.com> wrote: >> >> This patch kills all CONFIG_SRCU defines and >> the code under !CONFIG_SRCU. >> >> Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com> > > So what sort of overheads (in terms of code size and performance) are > we adding by having SRCU enabled where it used not to be? SRCU is unconditionally enabled for x86, so I had to use another arch (sparc64) to check the size difference. The config, I used to compile, is attached, SRCU was enabled via: diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 2d58c26bff9a..6e9116e356d4 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -15,6 +15,7 @@ config SPARC select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI select ARCH_MIGHT_HAVE_PC_SERIO select OF + select SRCU select OF_PROMTREE select HAVE_IDE select HAVE_OPROFILE $ size image.srcu.disabled text data bss dec hex filename 5117546 8030506 1968104 15116156 e6a77c image.srcu.disabled $ size image.srcu.enabled text data bss dec hex filename 5126175 8064346 1968104 15158625 e74d61 image.srcu.enabled The difference is: 15158625-15116156 = 42469 ~41Kb I have not ideas about performance overhead measurements. If you have ideas, where they may occur, please say. At the first sight, there should not be a problem, since SRCU is enabled in x86 by default. # # Automatically generated file; DO NOT EDIT. # Linux/sparc64 4.18.0-rc8 Kernel Configuration # # # Compiler: sparc64-linux-gnu-gcc-6 (Debian 6.4.0-16) 6.4.0 20180406 # CONFIG_CC_IS_GCC=y CONFIG_GCC_VERSION=60400 CONFIG_CLANG_VERSION=0 CONFIG_IRQ_WORK=y # # General setup # CONFIG_INIT_ENV_ARG_LIMIT=32 # CONFIG_COMPILE_TEST is not set CONFIG_LOCALVERSION="" # CONFIG_LOCALVERSION_AUTO is not set CONFIG_BUILD_SALT="" CONFIG_DEFAULT_HOSTNAME="(none)" CONFIG_SYSVIPC=y CONFIG_SYSVIPC_SYSCTL=y CONFIG_POSIX_MQUEUE=y CONFIG_POSIX_MQUEUE_SYSCTL=y CONFIG_CROSS_MEMORY_ATTACH=y CONFIG_USELIB=y # CONFIG_AUDIT is not set CONFIG_HAVE_ARCH_AUDITSYSCALL=y # # IRQ subsystem # CONFIG_GENERIC_IRQ_SHOW=y CONFIG_IRQ_PREFLOW_FASTEOI=y CONFIG_IRQ_DOMAIN=y CONFIG_GENERIC_MSI_IRQ=y CONFIG_SPARSE_IRQ=y # CONFIG_GENERIC_IRQ_DEBUGFS is not set CONFIG_ARCH_CLOCKSOURCE_DATA=y CONFIG_GENERIC_TIME_VSYSCALL=y CONFIG_GENERIC_CLOCKEVENTS=y # # Timers subsystem # CONFIG_TICK_ONESHOT=y CONFIG_NO_HZ_COMMON=y # CONFIG_HZ_PERIODIC is not set CONFIG_NO_HZ_IDLE=y # CONFIG_NO_HZ_FULL is not set CONFIG_NO_HZ=y CONFIG_HIGH_RES_TIMERS=y # CONFIG_PREEMPT_NONE is not set CONFIG_PREEMPT_VOLUNTARY=y # CONFIG_PREEMPT is not set # # CPU/Task time and stats accounting # CONFIG_TICK_CPU_ACCOUNTING=y # CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set # CONFIG_BSD_PROCESS_ACCT is not set # CONFIG_TASKSTATS is not set CONFIG_CPU_ISOLATION=y # # RCU Subsystem # CONFIG_TREE_RCU=y CONFIG_RCU_EXPERT=y CONFIG_SRCU=y CONFIG_TREE_SRCU=y CONFIG_RCU_STALL_COMMON=y CONFIG_RCU_NEED_SEGCBLIST=y CONFIG_RCU_FANOUT=64 CONFIG_RCU_FANOUT_LEAF=16 # CONFIG_RCU_FAST_NO_HZ is not set # CONFIG_RCU_NOCB_CPU is not set # CONFIG_IKCONFIG is not set CONFIG_LOG_BUF_SHIFT=18 CONFIG_LOG_CPU_MAX_BUF_SHIFT=12 CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13 # CONFIG_CGROUPS is not set CONFIG_NAMESPACES=y CONFIG_UTS_NS=y CONFIG_IPC_NS=y # CONFIG_USER_NS is not set CONFIG_PID_NS=y CONFIG_NET_NS=y # CONFIG_CHECKPOINT_RESTORE is not set # CONFIG_SCHED_AUTOGROUP is not set # CONFIG_SYSFS_DEPRECATED is not set CONFIG_RELAY=y CONFIG_BLK_DEV_INITRD=y CONFIG_INITRAMFS_SOURCE="" CONFIG_RD_GZIP=y CONFIG_RD_BZIP2=y CONFIG_RD_LZMA=y CONFIG_RD_XZ=y CONFIG_RD_LZO=y CONFIG_RD_LZ4=y CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set CONFIG_SYSCTL=y CONFIG_HAVE_UID16=y CONFIG_SYSCTL_EXCEPTION_TRACE=y CONFIG_BPF=y CONFIG_EXPERT=y CONFIG_UID16=y CONFIG_MULTIUSER=y CONFIG_SGETMASK_SYSCALL=y CONFIG_SYSFS_SYSCALL=y # CONFIG_SYSCTL_SYSCALL is not set CONFIG_FHANDLE=y CONFIG_POSIX_TIMERS=y CONFIG_PRINTK=y CONFIG_PRINTK_NMI=y CONFIG_BUG=y CONFIG_ELF_CORE=y CONFIG_BASE_FULL=y CONFIG_FUTEX=y CONFIG_FUTEX_PI=y CONFIG_EPOLL=y CONFIG_SIGNALFD=y CONFIG_TIMERFD=y CONFIG_EVENTFD=y CONFIG_SHMEM=y CONFIG_AIO=y CONFIG_ADVISE_SYSCALLS=y CONFIG_MEMBARRIER=y CONFIG_KALLSYMS=y # CONFIG_KALLSYMS_ALL is not set CONFIG_KALLSYMS_BASE_RELATIVE=y # CONFIG_BPF_SYSCALL is not set # CONFIG_USERFAULTFD is not set # CONFIG_EMBEDDED is not set CONFIG_HAVE_PERF_EVENTS=y CONFIG_PERF_USE_VMALLOC=y # CONFIG_PC104 is not set # # Kernel Performance Events And Counters # # CONFIG_PERF_EVENTS is not set CONFIG_VM_EVENT_COUNTERS=y # CONFIG_COMPAT_BRK is not set CONFIG_SLAB=y # CONFIG_SLUB is not set # CONFIG_SLOB is not set CONFIG_SLAB_MERGE_DEFAULT=y # CONFIG_SLAB_FREELIST_RANDOM is not set CONFIG_PROFILING=y CONFIG_TRACEPOINTS=y CONFIG_64BIT=y CONFIG_SPARC=y CONFIG_SPARC64=y CONFIG_ARCH_DEFCONFIG="arch/sparc/configs/sparc64_defconfig" CONFIG_ARCH_PROC_KCORE_TEXT=y CONFIG_CPU_BIG_ENDIAN=y CONFIG_ARCH_ATU=y CONFIG_STACKTRACE_SUPPORT=y CONFIG_LOCKDEP_SUPPORT=y CONFIG_ARCH_HIBERNATION_POSSIBLE=y CONFIG_AUDIT_ARCH=y CONFIG_HAVE_SETUP_PER_CPU_AREA=y CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y CONFIG_MMU=y CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y CONFIG_PGTABLE_LEVELS=4 CONFIG_ARCH_SUPPORTS_UPROBES=y # # Processor type and features # CONFIG_SMP=y CONFIG_NR_CPUS=4096 CONFIG_HZ_100=y # CONFIG_HZ_250 is not set # CONFIG_HZ_300 is not set # CONFIG_HZ_1000 is not set CONFIG_HZ=100 CONFIG_SCHED_HRTICK=y CONFIG_RWSEM_XCHGADD_ALGORITHM=y CONFIG_GENERIC_HWEIGHT=y CONFIG_GENERIC_CALIBRATE_DELAY=y CONFIG_ARCH_MAY_HAVE_PC_FDC=y CONFIG_SPARC64_SMP=y CONFIG_EARLYFB=y CONFIG_SECCOMP=y CONFIG_HOTPLUG_CPU=y # # CPU Frequency scaling # # CONFIG_CPU_FREQ is not set CONFIG_US3_MC=y CONFIG_NUMA=y CONFIG_NODES_SHIFT=5 CONFIG_NODES_SPAN_OTHER_NODES=y CONFIG_ARCH_SELECT_MEMORY_MODEL=y CONFIG_ARCH_SPARSEMEM_ENABLE=y CONFIG_ARCH_SPARSEMEM_DEFAULT=y CONFIG_FORCE_MAX_ZONEORDER=13 # CONFIG_PM is not set CONFIG_SCHED_SMT=y CONFIG_SCHED_MC=y # CONFIG_CMDLINE_BOOL is not set # # Bus options (PCI etc.) # CONFIG_SBUS=y CONFIG_SBUSCHAR=y CONFIG_SUN_LDOMS=y CONFIG_PCI=y CONFIG_PCI_DOMAINS=y CONFIG_PCI_SYSCALL=y # CONFIG_PCIEPORTBUS is not set CONFIG_PCI_MSI=y CONFIG_PCI_QUIRKS=y # CONFIG_PCI_DEBUG is not set # CONFIG_PCI_STUB is not set # CONFIG_PCI_IOV is not set # CONFIG_PCI_PRI is not set # CONFIG_PCI_PASID is not set # CONFIG_HOTPLUG_PCI is not set # # PCI controller drivers # # # Cadence PCIe controllers support # # CONFIG_PCIE_CADENCE_HOST is not set # CONFIG_PCI_FTPCI100 is not set # CONFIG_PCI_HOST_GENERIC is not set # # DesignWare PCI Core Support # # # PCI Endpoint # # CONFIG_PCI_ENDPOINT is not set # # PCI switch controller drivers # # CONFIG_PCI_SW_SWITCHTEC is not set # CONFIG_PCCARD is not set CONFIG_SUN_OPENPROMFS=m CONFIG_SPARC64_PCI=y CONFIG_SPARC64_PCI_MSI=y CONFIG_COMPAT=y CONFIG_SYSVIPC_COMPAT=y # # Misc Linux/SPARC drivers # CONFIG_SUN_OPENPROMIO=y # CONFIG_OBP_FLASH is not set # CONFIG_TADPOLE_TS102_UCTRL is not set # CONFIG_BBC_I2C is not set # CONFIG_ENVCTRL is not set # CONFIG_DISPLAY7SEG is not set CONFIG_ORACLE_DAX=m # # General architecture-dependent options # CONFIG_CRASH_CORE=y CONFIG_OPROFILE=m CONFIG_HAVE_OPROFILE=y CONFIG_KPROBES=y # CONFIG_JUMP_LABEL is not set CONFIG_HAVE_64BIT_ALIGNED_ACCESS=y CONFIG_KRETPROBES=y CONFIG_HAVE_KPROBES=y CONFIG_HAVE_KRETPROBES=y CONFIG_HAVE_NMI=y CONFIG_HAVE_ARCH_TRACEHOOK=y CONFIG_GENERIC_SMP_IDLE_THREAD=y CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y CONFIG_HAVE_NMI_WATCHDOG=y CONFIG_HAVE_ARCH_JUMP_LABEL=y CONFIG_HAVE_RCU_TABLE_FREE=y CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION=y CONFIG_ARCH_WANT_OLD_COMPAT_IPC=y CONFIG_CC_HAS_STACKPROTECTOR_NONE=y CONFIG_HAVE_CONTEXT_TRACKING=y CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y CONFIG_MODULES_USE_ELF_RELA=y CONFIG_HAVE_EXIT_THREAD=y CONFIG_ODD_RT_SIGACTION=y CONFIG_OLD_SIGSUSPEND=y CONFIG_COMPAT_OLD_SIGACTION=y CONFIG_COMPAT_32BIT_TIME=y CONFIG_CPU_NO_EFFICIENT_FFS=y # CONFIG_REFCOUNT_FULL is not set # # GCOV-based kernel profiling # # CONFIG_GCOV_KERNEL is not set CONFIG_PLUGIN_HOSTCC="" CONFIG_RT_MUTEXES=y CONFIG_BASE_SMALL=0 CONFIG_MODULES=y # CONFIG_MODULE_FORCE_LOAD is not set CONFIG_MODULE_UNLOAD=y CONFIG_MODULE_FORCE_UNLOAD=y CONFIG_MODVERSIONS=y CONFIG_MODULE_SRCVERSION_ALL=y # CONFIG_MODULE_SIG is not set # CONFIG_MODULE_COMPRESS is not set # CONFIG_TRIM_UNUSED_KSYMS is not set CONFIG_MODULES_TREE_LOOKUP=y # CONFIG_BLOCK is not set CONFIG_INLINE_SPIN_UNLOCK_IRQ=y CONFIG_INLINE_READ_UNLOCK=y CONFIG_INLINE_READ_UNLOCK_IRQ=y CONFIG_INLINE_WRITE_UNLOCK=y CONFIG_INLINE_WRITE_UNLOCK_IRQ=y CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y CONFIG_MUTEX_SPIN_ON_OWNER=y CONFIG_RWSEM_SPIN_ON_OWNER=y CONFIG_LOCK_SPIN_ON_OWNER=y CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y CONFIG_QUEUED_SPINLOCKS=y CONFIG_ARCH_USE_QUEUED_RWLOCKS=y CONFIG_QUEUED_RWLOCKS=y # # Executable file formats # CONFIG_BINFMT_ELF=y CONFIG_COMPAT_BINFMT_ELF=y CONFIG_ELFCORE=y CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y CONFIG_BINFMT_SCRIPT=y CONFIG_BINFMT_MISC=m CONFIG_COREDUMP=y # # Memory Management options # CONFIG_SELECT_MEMORY_MODEL=y CONFIG_SPARSEMEM_MANUAL=y CONFIG_SPARSEMEM=y CONFIG_NEED_MULTIPLE_NODES=y CONFIG_HAVE_MEMORY_PRESENT=y CONFIG_SPARSEMEM_EXTREME=y CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y CONFIG_SPARSEMEM_VMEMMAP=y CONFIG_HAVE_MEMBLOCK=y CONFIG_HAVE_MEMBLOCK_NODE_MAP=y CONFIG_NO_BOOTMEM=y CONFIG_SPLIT_PTLOCK_CPUS=4 CONFIG_COMPACTION=y CONFIG_MIGRATION=y CONFIG_PHYS_ADDR_T_64BIT=y # CONFIG_KSM is not set CONFIG_DEFAULT_MMAP_MIN_ADDR=8192 # CONFIG_TRANSPARENT_HUGEPAGE is not set # CONFIG_CLEANCACHE is not set # CONFIG_CMA is not set # CONFIG_ZPOOL is not set # CONFIG_ZBUD is not set # CONFIG_ZSMALLOC is not set # CONFIG_DEFERRED_STRUCT_PAGE_INIT is not set # CONFIG_IDLE_PAGE_TRACKING is not set # CONFIG_PERCPU_STATS is not set # CONFIG_GUP_BENCHMARK is not set CONFIG_ARCH_HAS_PTE_SPECIAL=y CONFIG_NET=y # # Networking options # CONFIG_PACKET=y # CONFIG_PACKET_DIAG is not set CONFIG_UNIX=y # CONFIG_UNIX_DIAG is not set # CONFIG_TLS is not set CONFIG_XFRM=y CONFIG_XFRM_ALGO=y CONFIG_XFRM_USER=m # CONFIG_XFRM_INTERFACE is not set # CONFIG_XFRM_SUB_POLICY is not set CONFIG_XFRM_MIGRATE=y # CONFIG_XFRM_STATISTICS is not set CONFIG_XFRM_IPCOMP=y CONFIG_NET_KEY=m CONFIG_NET_KEY_MIGRATE=y CONFIG_INET=y CONFIG_IP_MULTICAST=y # CONFIG_IP_ADVANCED_ROUTER is not set # CONFIG_IP_PNP is not set CONFIG_NET_IPIP=m # CONFIG_NET_IPGRE_DEMUX is not set CONFIG_NET_IP_TUNNEL=y CONFIG_IP_MROUTE_COMMON=y CONFIG_IP_MROUTE=y CONFIG_IP_PIMSM_V1=y CONFIG_IP_PIMSM_V2=y CONFIG_SYN_COOKIES=y # CONFIG_NET_IPVTI is not set # CONFIG_NET_FOU is not set # CONFIG_NET_FOU_IP_TUNNELS is not set CONFIG_INET_AH=y CONFIG_INET_ESP=y # CONFIG_INET_ESP_OFFLOAD is not set CONFIG_INET_IPCOMP=y CONFIG_INET_XFRM_TUNNEL=y CONFIG_INET_TUNNEL=y CONFIG_INET_XFRM_MODE_TRANSPORT=y CONFIG_INET_XFRM_MODE_TUNNEL=y CONFIG_INET_XFRM_MODE_BEET=y CONFIG_INET_DIAG=y CONFIG_INET_TCP_DIAG=y # CONFIG_INET_UDP_DIAG is not set # CONFIG_INET_RAW_DIAG is not set # CONFIG_INET_DIAG_DESTROY is not set # CONFIG_TCP_CONG_ADVANCED is not set CONFIG_TCP_CONG_CUBIC=y CONFIG_DEFAULT_TCP_CONG="cubic" # CONFIG_TCP_MD5SIG is not set CONFIG_IPV6=y CONFIG_IPV6_ROUTER_PREF=y CONFIG_IPV6_ROUTE_INFO=y CONFIG_IPV6_OPTIMISTIC_DAD=y CONFIG_INET6_AH=m CONFIG_INET6_ESP=m # CONFIG_INET6_ESP_OFFLOAD is not set CONFIG_INET6_IPCOMP=m # CONFIG_IPV6_MIP6 is not set CONFIG_INET6_XFRM_TUNNEL=m CONFIG_INET6_TUNNEL=m CONFIG_INET6_XFRM_MODE_TRANSPORT=y CONFIG_INET6_XFRM_MODE_TUNNEL=y CONFIG_INET6_XFRM_MODE_BEET=y # CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set # CONFIG_IPV6_VTI is not set CONFIG_IPV6_SIT=y # CONFIG_IPV6_SIT_6RD is not set CONFIG_IPV6_NDISC_NODETYPE=y CONFIG_IPV6_TUNNEL=m # CONFIG_IPV6_MULTIPLE_TABLES is not set # CONFIG_IPV6_MROUTE is not set # CONFIG_IPV6_SEG6_LWTUNNEL is not set # CONFIG_IPV6_SEG6_HMAC is not set # CONFIG_NETWORK_SECMARK is not set CONFIG_NET_PTP_CLASSIFY=y # CONFIG_NETWORK_PHY_TIMESTAMPING is not set # CONFIG_NETFILTER is not set # CONFIG_BPFILTER is not set # CONFIG_IP_DCCP is not set # CONFIG_IP_SCTP is not set # CONFIG_RDS is not set # CONFIG_TIPC is not set # CONFIG_ATM is not set # CONFIG_L2TP is not set # CONFIG_BRIDGE is not set CONFIG_HAVE_NET_DSA=y # CONFIG_NET_DSA is not set CONFIG_VLAN_8021Q=m # CONFIG_VLAN_8021Q_GVRP is not set # CONFIG_VLAN_8021Q_MVRP is not set # CONFIG_DECNET is not set # CONFIG_LLC2 is not set # CONFIG_ATALK is not set # CONFIG_X25 is not set # CONFIG_LAPB is not set # CONFIG_PHONET is not set # CONFIG_6LOWPAN is not set # CONFIG_IEEE802154 is not set # CONFIG_NET_SCHED is not set # CONFIG_DCB is not set # CONFIG_DNS_RESOLVER is not set # CONFIG_BATMAN_ADV is not set # CONFIG_OPENVSWITCH is not set # CONFIG_VSOCKETS is not set # CONFIG_NETLINK_DIAG is not set # CONFIG_MPLS is not set # CONFIG_NET_NSH is not set # CONFIG_HSR is not set # CONFIG_NET_SWITCHDEV is not set # CONFIG_NET_L3_MASTER_DEV is not set # CONFIG_NET_NCSI is not set CONFIG_RPS=y CONFIG_RFS_ACCEL=y CONFIG_XPS=y CONFIG_NET_RX_BUSY_POLL=y CONFIG_BQL=y # CONFIG_BPF_JIT is not set CONFIG_NET_FLOW_LIMIT=y # # Network testing # CONFIG_NET_PKTGEN=m # CONFIG_NET_DROP_MONITOR is not set # CONFIG_HAMRADIO is not set # CONFIG_CAN is not set # CONFIG_BT is not set # CONFIG_AF_RXRPC is not set # CONFIG_AF_KCM is not set CONFIG_WIRELESS=y # CONFIG_CFG80211 is not set # # CFG80211 needs to be enabled for MAC80211 # CONFIG_MAC80211_STA_HASH_MAX_SIZE=0 # CONFIG_WIMAX is not set # CONFIG_RFKILL is not set # CONFIG_NET_9P is not set # CONFIG_CAIF is not set # CONFIG_CEPH_LIB is not set # CONFIG_NFC is not set # CONFIG_PSAMPLE is not set # CONFIG_NET_IFE is not set # CONFIG_LWTUNNEL is not set CONFIG_DST_CACHE=y CONFIG_GRO_CELLS=y # CONFIG_NET_DEVLINK is not set CONFIG_MAY_USE_DEVLINK=y # CONFIG_FAILOVER is not set CONFIG_HAVE_EBPF_JIT=y # # Device Drivers # # # Generic Driver Options # CONFIG_UEVENT_HELPER=y CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" # CONFIG_DEVTMPFS is not set CONFIG_STANDALONE=y # CONFIG_PREVENT_FIRMWARE_BUILD is not set # # Firmware loader # CONFIG_FW_LOADER=y CONFIG_EXTRA_FIRMWARE="" # CONFIG_FW_LOADER_USER_HELPER is not set CONFIG_ALLOW_DEV_COREDUMP=y # CONFIG_DEBUG_DRIVER is not set # CONFIG_DEBUG_DEVRES is not set # CONFIG_DEBUG_TEST_DRIVER_REMOVE is not set # CONFIG_TEST_ASYNC_DRIVER_PROBE is not set CONFIG_REGMAP=y CONFIG_REGMAP_I2C=y # # Bus devices # CONFIG_CONNECTOR=m # CONFIG_GNSS is not set # CONFIG_MTD is not set CONFIG_OF=y CONFIG_OF_PROMTREE=y CONFIG_OF_KOBJ=y CONFIG_OF_NET=y CONFIG_OF_MDIO=m # CONFIG_OF_OVERLAY is not set CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y # CONFIG_PARPORT is not set # # NVME Support # # # Misc devices # # CONFIG_AD525X_DPOT is not set # CONFIG_DUMMY_IRQ is not set # CONFIG_PHANTOM is not set # CONFIG_SGI_IOC4 is not set # CONFIG_TIFM_CORE is not set # CONFIG_ICS932S401 is not set # CONFIG_ENCLOSURE_SERVICES is not set # CONFIG_HP_ILO is not set # CONFIG_APDS9802ALS is not set # CONFIG_ISL29003 is not set # CONFIG_ISL29020 is not set # CONFIG_SENSORS_TSL2550 is not set # CONFIG_SENSORS_BH1770 is not set # CONFIG_SENSORS_APDS990X is not set # CONFIG_HMC6352 is not set # CONFIG_DS1682 is not set # CONFIG_USB_SWITCH_FSA9480 is not set # CONFIG_SRAM is not set # CONFIG_PCI_ENDPOINT_TEST is not set # CONFIG_C2PORT is not set # # EEPROM support # # CONFIG_EEPROM_AT24 is not set # CONFIG_EEPROM_LEGACY is not set # CONFIG_EEPROM_MAX6875 is not set # CONFIG_EEPROM_93CX6 is not set # CONFIG_EEPROM_IDT_89HPESX is not set # CONFIG_CB710_CORE is not set # # Texas Instruments shared transport line discipline # # CONFIG_SENSORS_LIS3_I2C is not set # CONFIG_ALTERA_STAPL is not set # # Intel MIC & related support # # # Intel MIC Bus Driver # # # SCIF Bus Driver # # # VOP Bus Driver # # # Intel MIC Host Driver # # # Intel MIC Card Driver # # # SCIF Driver # # # Intel MIC Coprocessor State Management (COSM) Drivers # # # VOP Driver # # CONFIG_GENWQE is not set # CONFIG_ECHO is not set # CONFIG_MISC_RTSX_PCI is not set # CONFIG_MISC_RTSX_USB is not set CONFIG_HAVE_IDE=y # # SCSI device support # CONFIG_SCSI_MOD=y # CONFIG_FUSION is not set # # IEEE 1394 (FireWire) support # # CONFIG_FIREWIRE is not set # CONFIG_FIREWIRE_NOSY is not set CONFIG_NETDEVICES=y CONFIG_NET_CORE=y # CONFIG_BONDING is not set # CONFIG_DUMMY is not set # CONFIG_EQUALIZER is not set # CONFIG_NET_TEAM is not set # CONFIG_MACVLAN is not set # CONFIG_VXLAN is not set # CONFIG_MACSEC is not set # CONFIG_NETCONSOLE is not set # CONFIG_TUN is not set # CONFIG_TUN_VNET_CROSS_LE is not set # CONFIG_VETH is not set # CONFIG_NLMON is not set CONFIG_SUNGEM_PHY=m # CONFIG_ARCNET is not set # # CAIF transport drivers # # # Distributed Switch Architecture drivers # CONFIG_ETHERNET=y CONFIG_NET_VENDOR_3COM=y # CONFIG_VORTEX is not set # CONFIG_TYPHOON is not set CONFIG_NET_VENDOR_ADAPTEC=y # CONFIG_ADAPTEC_STARFIRE is not set # CONFIG_GRETH is not set CONFIG_NET_VENDOR_AGERE=y # CONFIG_ET131X is not set CONFIG_NET_VENDOR_ALACRITECH=y # CONFIG_SLICOSS is not set CONFIG_NET_VENDOR_ALTEON=y # CONFIG_ACENIC is not set # CONFIG_ALTERA_TSE is not set CONFIG_NET_VENDOR_AMAZON=y CONFIG_NET_VENDOR_AMD=y # CONFIG_AMD8111_ETH is not set # CONFIG_PCNET32 is not set CONFIG_SUNLANCE=m CONFIG_NET_VENDOR_AQUANTIA=y CONFIG_NET_VENDOR_ARC=y CONFIG_NET_VENDOR_ATHEROS=y # CONFIG_ATL2 is not set # CONFIG_ATL1 is not set # CONFIG_ATL1E is not set # CONFIG_ATL1C is not set # CONFIG_ALX is not set CONFIG_NET_VENDOR_AURORA=y # CONFIG_AURORA_NB8800 is not set CONFIG_NET_VENDOR_BROADCOM=y # CONFIG_B44 is not set # CONFIG_BCMGENET is not set CONFIG_BNX2=m # CONFIG_CNIC is not set CONFIG_TIGON3=m CONFIG_TIGON3_HWMON=y # CONFIG_BNX2X is not set # CONFIG_SYSTEMPORT is not set # CONFIG_BNXT is not set CONFIG_NET_VENDOR_BROCADE=y # CONFIG_BNA is not set CONFIG_NET_VENDOR_CADENCE=y # CONFIG_MACB is not set CONFIG_NET_VENDOR_CAVIUM=y # CONFIG_THUNDER_NIC_PF is not set # CONFIG_THUNDER_NIC_VF is not set # CONFIG_THUNDER_NIC_BGX is not set # CONFIG_THUNDER_NIC_RGX is not set CONFIG_CAVIUM_PTP=y # CONFIG_LIQUIDIO is not set # CONFIG_LIQUIDIO_VF is not set CONFIG_NET_VENDOR_CHELSIO=y # CONFIG_CHELSIO_T1 is not set # CONFIG_CHELSIO_T3 is not set # CONFIG_CHELSIO_T4 is not set # CONFIG_CHELSIO_T4VF is not set CONFIG_NET_VENDOR_CISCO=y # CONFIG_ENIC is not set CONFIG_NET_VENDOR_CORTINA=y # CONFIG_GEMINI_ETHERNET is not set # CONFIG_DNET is not set CONFIG_NET_VENDOR_DEC=y # CONFIG_NET_TULIP is not set CONFIG_NET_VENDOR_DLINK=y # CONFIG_DL2K is not set # CONFIG_SUNDANCE is not set CONFIG_NET_VENDOR_EMULEX=y # CONFIG_BE2NET is not set CONFIG_NET_VENDOR_EZCHIP=y CONFIG_NET_VENDOR_HP=y # CONFIG_HP100 is not set CONFIG_NET_VENDOR_HUAWEI=y CONFIG_NET_VENDOR_I825XX=y CONFIG_NET_VENDOR_INTEL=y # CONFIG_E100 is not set CONFIG_E1000=m CONFIG_E1000E=m # CONFIG_IGB is not set # CONFIG_IGBVF is not set # CONFIG_IXGB is not set # CONFIG_IXGBE is not set # CONFIG_IXGBEVF is not set # CONFIG_I40E is not set # CONFIG_I40EVF is not set # CONFIG_ICE is not set # CONFIG_FM10K is not set # CONFIG_JME is not set CONFIG_NET_VENDOR_MARVELL=y # CONFIG_MVMDIO is not set # CONFIG_SKGE is not set # CONFIG_SKY2 is not set CONFIG_NET_VENDOR_MELLANOX=y # CONFIG_MLX4_EN is not set # CONFIG_MLX5_CORE is not set # CONFIG_MLXSW_CORE is not set # CONFIG_MLXFW is not set CONFIG_NET_VENDOR_MICREL=y # CONFIG_KS8851_MLL is not set # CONFIG_KSZ884X_PCI is not set CONFIG_NET_VENDOR_MICROSEMI=y CONFIG_NET_VENDOR_MYRI=y # CONFIG_MYRI10GE is not set # CONFIG_FEALNX is not set CONFIG_NET_VENDOR_NATSEMI=y # CONFIG_NATSEMI is not set # CONFIG_NS83820 is not set CONFIG_NET_VENDOR_NETERION=y # CONFIG_S2IO is not set # CONFIG_VXGE is not set CONFIG_NET_VENDOR_NETRONOME=y # CONFIG_NFP is not set CONFIG_NET_VENDOR_NI=y CONFIG_NET_VENDOR_8390=y # CONFIG_NE2K_PCI is not set CONFIG_NET_VENDOR_NVIDIA=y # CONFIG_FORCEDETH is not set CONFIG_NET_VENDOR_OKI=y # CONFIG_ETHOC is not set CONFIG_NET_VENDOR_PACKET_ENGINES=y # CONFIG_HAMACHI is not set # CONFIG_YELLOWFIN is not set CONFIG_NET_VENDOR_QLOGIC=y # CONFIG_QLA3XXX is not set # CONFIG_QLCNIC is not set # CONFIG_QLGE is not set # CONFIG_NETXEN_NIC is not set # CONFIG_QED is not set CONFIG_NET_VENDOR_QUALCOMM=y # CONFIG_QCOM_EMAC is not set # CONFIG_RMNET is not set CONFIG_NET_VENDOR_RDC=y # CONFIG_R6040 is not set CONFIG_NET_VENDOR_REALTEK=y # CONFIG_8139CP is not set # CONFIG_8139TOO is not set # CONFIG_R8169 is not set CONFIG_NET_VENDOR_RENESAS=y CONFIG_NET_VENDOR_ROCKER=y CONFIG_NET_VENDOR_SAMSUNG=y # CONFIG_SXGBE_ETH is not set CONFIG_NET_VENDOR_SEEQ=y CONFIG_NET_VENDOR_SOLARFLARE=y # CONFIG_SFC is not set # CONFIG_SFC_FALCON is not set CONFIG_NET_VENDOR_SILAN=y # CONFIG_SC92031 is not set CONFIG_NET_VENDOR_SIS=y # CONFIG_SIS900 is not set # CONFIG_SIS190 is not set CONFIG_NET_VENDOR_SMSC=y # CONFIG_EPIC100 is not set # CONFIG_SMSC911X is not set # CONFIG_SMSC9420 is not set CONFIG_NET_VENDOR_SOCIONEXT=y CONFIG_NET_VENDOR_STMICRO=y # CONFIG_STMMAC_ETH is not set CONFIG_NET_VENDOR_SUN=y CONFIG_HAPPYMEAL=m # CONFIG_SUNBMAC is not set # CONFIG_SUNQE is not set CONFIG_SUNGEM=m # CONFIG_CASSINI is not set CONFIG_SUNVNET_COMMON=m CONFIG_SUNVNET=m CONFIG_LDMVSW=m CONFIG_NIU=m CONFIG_NET_VENDOR_SYNOPSYS=y # CONFIG_DWC_XLGMAC is not set CONFIG_NET_VENDOR_TEHUTI=y # CONFIG_TEHUTI is not set CONFIG_NET_VENDOR_TI=y # CONFIG_TI_CPSW_ALE is not set # CONFIG_TLAN is not set CONFIG_NET_VENDOR_VIA=y # CONFIG_VIA_RHINE is not set # CONFIG_VIA_VELOCITY is not set CONFIG_NET_VENDOR_WIZNET=y # CONFIG_WIZNET_W5100 is not set # CONFIG_WIZNET_W5300 is not set # CONFIG_FDDI is not set # CONFIG_HIPPI is not set CONFIG_MDIO_DEVICE=m CONFIG_MDIO_BUS=m # CONFIG_MDIO_BCM_UNIMAC is not set # CONFIG_MDIO_BITBANG is not set # CONFIG_MDIO_BUS_MUX_MMIOREG is not set # CONFIG_MDIO_HISI_FEMAC is not set # CONFIG_MDIO_MSCC_MIIM is not set # CONFIG_MDIO_OCTEON is not set # CONFIG_MDIO_THUNDER is not set CONFIG_PHYLIB=m CONFIG_SWPHY=y # # MII PHY device drivers # # CONFIG_AMD_PHY is not set # CONFIG_AQUANTIA_PHY is not set # CONFIG_ASIX_PHY is not set # CONFIG_AT803X_PHY is not set # CONFIG_BCM7XXX_PHY is not set # CONFIG_BCM87XX_PHY is not set # CONFIG_BROADCOM_PHY is not set # CONFIG_CICADA_PHY is not set # CONFIG_CORTINA_PHY is not set # CONFIG_DAVICOM_PHY is not set # CONFIG_DP83822_PHY is not set # CONFIG_DP83TC811_PHY is not set # CONFIG_DP83848_PHY is not set # CONFIG_DP83867_PHY is not set CONFIG_FIXED_PHY=m # CONFIG_ICPLUS_PHY is not set # CONFIG_INTEL_XWAY_PHY is not set # CONFIG_LSI_ET1011C_PHY is not set # CONFIG_LXT_PHY is not set # CONFIG_MARVELL_PHY is not set # CONFIG_MARVELL_10G_PHY is not set # CONFIG_MICREL_PHY is not set # CONFIG_MICROCHIP_PHY is not set # CONFIG_MICROCHIP_T1_PHY is not set # CONFIG_MICROSEMI_PHY is not set # CONFIG_NATIONAL_PHY is not set # CONFIG_QSEMI_PHY is not set # CONFIG_REALTEK_PHY is not set # CONFIG_RENESAS_PHY is not set # CONFIG_ROCKCHIP_PHY is not set # CONFIG_SMSC_PHY is not set # CONFIG_STE10XP is not set # CONFIG_TERANETICS_PHY is not set # CONFIG_VITESSE_PHY is not set # CONFIG_XILINX_GMII2RGMII is not set CONFIG_PPP=m CONFIG_PPP_BSDCOMP=m CONFIG_PPP_DEFLATE=m CONFIG_PPP_FILTER=y CONFIG_PPP_MPPE=m CONFIG_PPP_MULTILINK=y CONFIG_PPPOE=m CONFIG_PPP_ASYNC=m CONFIG_PPP_SYNC_TTY=m # CONFIG_SLIP is not set CONFIG_SLHC=m CONFIG_USB_NET_DRIVERS=y # CONFIG_USB_CATC is not set # CONFIG_USB_KAWETH is not set # CONFIG_USB_PEGASUS is not set # CONFIG_USB_RTL8150 is not set # CONFIG_USB_RTL8152 is not set # CONFIG_USB_LAN78XX is not set # CONFIG_USB_USBNET is not set # CONFIG_USB_IPHETH is not set # CONFIG_WLAN is not set # # Enable WiMAX (Networking options) to see the WiMAX drivers # # CONFIG_WAN is not set # CONFIG_VMXNET3 is not set # CONFIG_NETDEVSIM is not set # CONFIG_NET_FAILOVER is not set # CONFIG_ISDN is not set # # Input device support # CONFIG_INPUT=y # CONFIG_INPUT_FF_MEMLESS is not set # CONFIG_INPUT_POLLDEV is not set # CONFIG_INPUT_SPARSEKMAP is not set # CONFIG_INPUT_MATRIXKMAP is not set # # Userland interfaces # # CONFIG_INPUT_MOUSEDEV is not set # CONFIG_INPUT_JOYDEV is not set CONFIG_INPUT_EVDEV=y # CONFIG_INPUT_EVBUG is not set # # Input Device Drivers # CONFIG_INPUT_KEYBOARD=y # CONFIG_KEYBOARD_ADP5588 is not set # CONFIG_KEYBOARD_ADP5589 is not set CONFIG_KEYBOARD_ATKBD=y # CONFIG_KEYBOARD_QT1070 is not set # CONFIG_KEYBOARD_QT2160 is not set # CONFIG_KEYBOARD_DLINK_DIR685 is not set CONFIG_KEYBOARD_LKKBD=m # CONFIG_KEYBOARD_TCA6416 is not set # CONFIG_KEYBOARD_TCA8418 is not set # CONFIG_KEYBOARD_LM8333 is not set # CONFIG_KEYBOARD_MAX7359 is not set # CONFIG_KEYBOARD_MCS is not set # CONFIG_KEYBOARD_MPR121 is not set # CONFIG_KEYBOARD_NEWTON is not set # CONFIG_KEYBOARD_OPENCORES is not set # CONFIG_KEYBOARD_STOWAWAY is not set CONFIG_KEYBOARD_SUNKBD=y # CONFIG_KEYBOARD_OMAP4 is not set # CONFIG_KEYBOARD_XTKBD is not set # CONFIG_KEYBOARD_CAP11XX is not set CONFIG_INPUT_MOUSE=y CONFIG_MOUSE_PS2=y CONFIG_MOUSE_PS2_ALPS=y CONFIG_MOUSE_PS2_BYD=y CONFIG_MOUSE_PS2_LOGIPS2PP=y CONFIG_MOUSE_PS2_SYNAPTICS=y CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS=y CONFIG_MOUSE_PS2_CYPRESS=y CONFIG_MOUSE_PS2_TRACKPOINT=y # CONFIG_MOUSE_PS2_ELANTECH is not set # CONFIG_MOUSE_PS2_SENTELIC is not set # CONFIG_MOUSE_PS2_TOUCHKIT is not set CONFIG_MOUSE_PS2_FOCALTECH=y CONFIG_MOUSE_PS2_SMBUS=y CONFIG_MOUSE_SERIAL=y # CONFIG_MOUSE_APPLETOUCH is not set # CONFIG_MOUSE_BCM5974 is not set # CONFIG_MOUSE_CYAPA is not set # CONFIG_MOUSE_ELAN_I2C is not set # CONFIG_MOUSE_VSXXXAA is not set # CONFIG_MOUSE_SYNAPTICS_I2C is not set # CONFIG_MOUSE_SYNAPTICS_USB is not set # CONFIG_INPUT_JOYSTICK is not set # CONFIG_INPUT_TABLET is not set # CONFIG_INPUT_TOUCHSCREEN is not set CONFIG_INPUT_MISC=y # CONFIG_INPUT_AD714X is not set # CONFIG_INPUT_ATMEL_CAPTOUCH is not set # CONFIG_INPUT_BMA150 is not set # CONFIG_INPUT_E3X0_BUTTON is not set CONFIG_INPUT_SPARCSPKR=y # CONFIG_INPUT_MMA8450 is not set # CONFIG_INPUT_ATI_REMOTE2 is not set # CONFIG_INPUT_KEYSPAN_REMOTE is not set # CONFIG_INPUT_KXTJ9 is not set # CONFIG_INPUT_POWERMATE is not set # CONFIG_INPUT_YEALINK is not set # CONFIG_INPUT_CM109 is not set # CONFIG_INPUT_UINPUT is not set # CONFIG_INPUT_PCF8574 is not set # CONFIG_INPUT_ADXL34X is not set # CONFIG_INPUT_CMA3000 is not set # CONFIG_INPUT_IDEAPAD_SLIDEBAR is not set # CONFIG_INPUT_DRV2665_HAPTICS is not set # CONFIG_INPUT_DRV2667_HAPTICS is not set # CONFIG_RMI4_CORE is not set # # Hardware I/O ports # CONFIG_SERIO=y CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y CONFIG_SERIO_I8042=y # CONFIG_SERIO_SERPORT is not set CONFIG_SERIO_PCIPS2=m CONFIG_SERIO_LIBPS2=y CONFIG_SERIO_RAW=m # CONFIG_SERIO_ALTERA_PS2 is not set # CONFIG_SERIO_PS2MULT is not set # CONFIG_SERIO_ARC_PS2 is not set # CONFIG_SERIO_APBPS2 is not set # CONFIG_USERIO is not set # CONFIG_GAMEPORT is not set # # Character devices # CONFIG_TTY=y CONFIG_VT=y CONFIG_CONSOLE_TRANSLATIONS=y CONFIG_VT_CONSOLE=y CONFIG_HW_CONSOLE=y CONFIG_VT_HW_CONSOLE_BINDING=y CONFIG_UNIX98_PTYS=y # CONFIG_LEGACY_PTYS is not set # CONFIG_SERIAL_NONSTANDARD is not set # CONFIG_NOZOMI is not set # CONFIG_N_GSM is not set # CONFIG_TRACE_SINK is not set CONFIG_VCC=m CONFIG_DEVMEM=y # CONFIG_DEVKMEM is not set # # Serial drivers # # CONFIG_SERIAL_8250 is not set # # Non-8250 serial port support # # CONFIG_SERIAL_UARTLITE is not set CONFIG_SERIAL_SUNCORE=y # CONFIG_SERIAL_SUNZILOG is not set CONFIG_SERIAL_SUNSU=y CONFIG_SERIAL_SUNSU_CONSOLE=y CONFIG_SERIAL_SUNSAB=y CONFIG_SERIAL_SUNSAB_CONSOLE=y CONFIG_SERIAL_SUNHV=y CONFIG_SERIAL_CORE=y CONFIG_SERIAL_CORE_CONSOLE=y # CONFIG_SERIAL_JSM is not set # CONFIG_SERIAL_SCCNXP is not set # CONFIG_SERIAL_SC16IS7XX is not set # CONFIG_SERIAL_GRLIB_GAISLER_APBUART is not set # CONFIG_SERIAL_ALTERA_JTAGUART is not set # CONFIG_SERIAL_ALTERA_UART is not set # CONFIG_SERIAL_XILINX_PS_UART is not set # CONFIG_SERIAL_ARC is not set # CONFIG_SERIAL_RP2 is not set # CONFIG_SERIAL_FSL_LPUART is not set # CONFIG_SERIAL_CONEXANT_DIGICOLOR is not set # CONFIG_SERIAL_DEV_BUS is not set # CONFIG_TTY_PRINTK is not set # CONFIG_IPMI_HANDLER is not set CONFIG_HW_RANDOM=m # CONFIG_HW_RANDOM_TIMERIOMEM is not set CONFIG_HW_RANDOM_N2RNG=m # CONFIG_R3964 is not set # CONFIG_APPLICOM is not set # CONFIG_TCG_TPM is not set CONFIG_DEVPORT=y # CONFIG_XILLYBUS is not set CONFIG_ADI=m # # I2C support # CONFIG_I2C=y CONFIG_I2C_BOARDINFO=y CONFIG_I2C_COMPAT=y # CONFIG_I2C_CHARDEV is not set # CONFIG_I2C_MUX is not set CONFIG_I2C_HELPER_AUTO=y CONFIG_I2C_ALGOBIT=y # # I2C Hardware Bus support # # # PC SMBus host controller drivers # # CONFIG_I2C_ALI1535 is not set # CONFIG_I2C_ALI1563 is not set # CONFIG_I2C_ALI15X3 is not set # CONFIG_I2C_AMD756 is not set # CONFIG_I2C_AMD8111 is not set # CONFIG_I2C_I801 is not set # CONFIG_I2C_ISCH is not set # CONFIG_I2C_PIIX4 is not set # CONFIG_I2C_NFORCE2 is not set # CONFIG_I2C_SIS5595 is not set # CONFIG_I2C_SIS630 is not set # CONFIG_I2C_SIS96X is not set # CONFIG_I2C_VIA is not set # CONFIG_I2C_VIAPRO is not set # # I2C system bus drivers (mostly embedded / system-on-chip) # # CONFIG_I2C_DESIGNWARE_PLATFORM is not set # CONFIG_I2C_DESIGNWARE_PCI is not set # CONFIG_I2C_OCORES is not set # CONFIG_I2C_PCA_PLATFORM is not set # CONFIG_I2C_SIMTEC is not set # CONFIG_I2C_XILINX is not set # # External I2C/SMBus adapter drivers # # CONFIG_I2C_DIOLAN_U2C is not set # CONFIG_I2C_PARPORT_LIGHT is not set # CONFIG_I2C_ROBOTFUZZ_OSIF is not set # CONFIG_I2C_TAOS_EVM is not set # CONFIG_I2C_TINY_USB is not set # # Other I2C/SMBus bus drivers # # CONFIG_I2C_STUB is not set # CONFIG_I2C_SLAVE is not set # CONFIG_I2C_DEBUG_CORE is not set # CONFIG_I2C_DEBUG_ALGO is not set # CONFIG_I2C_DEBUG_BUS is not set # CONFIG_SPI is not set # CONFIG_SPMI is not set # CONFIG_HSI is not set CONFIG_PPS=y # CONFIG_PPS_DEBUG is not set # # PPS clients support # # CONFIG_PPS_CLIENT_KTIMER is not set # CONFIG_PPS_CLIENT_LDISC is not set # CONFIG_PPS_CLIENT_GPIO is not set # # PPS generators support # # # PTP clock support # CONFIG_PTP_1588_CLOCK=y # # Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks. # # CONFIG_PINCTRL is not set # CONFIG_GPIOLIB is not set # CONFIG_W1 is not set # CONFIG_POWER_AVS is not set # CONFIG_POWER_RESET is not set # CONFIG_POWER_SUPPLY is not set CONFIG_HWMON=y # CONFIG_HWMON_DEBUG_CHIP is not set # # Native drivers # # CONFIG_SENSORS_AD7414 is not set # CONFIG_SENSORS_AD7418 is not set # CONFIG_SENSORS_ADM1021 is not set # CONFIG_SENSORS_ADM1025 is not set # CONFIG_SENSORS_ADM1026 is not set # CONFIG_SENSORS_ADM1029 is not set # CONFIG_SENSORS_ADM1031 is not set # CONFIG_SENSORS_ADM9240 is not set # CONFIG_SENSORS_ADT7410 is not set # CONFIG_SENSORS_ADT7411 is not set # CONFIG_SENSORS_ADT7462 is not set # CONFIG_SENSORS_ADT7470 is not set # CONFIG_SENSORS_ADT7475 is not set # CONFIG_SENSORS_ASC7621 is not set # CONFIG_SENSORS_ASPEED is not set # CONFIG_SENSORS_ATXP1 is not set # CONFIG_SENSORS_DS620 is not set # CONFIG_SENSORS_DS1621 is not set # CONFIG_SENSORS_I5K_AMB is not set # CONFIG_SENSORS_F71805F is not set # CONFIG_SENSORS_F71882FG is not set # CONFIG_SENSORS_F75375S is not set # CONFIG_SENSORS_GL518SM is not set # CONFIG_SENSORS_GL520SM is not set # CONFIG_SENSORS_G760A is not set # CONFIG_SENSORS_G762 is not set # CONFIG_SENSORS_HIH6130 is not set # CONFIG_SENSORS_IT87 is not set # CONFIG_SENSORS_JC42 is not set # CONFIG_SENSORS_POWR1220 is not set # CONFIG_SENSORS_LINEAGE is not set # CONFIG_SENSORS_LTC2945 is not set # CONFIG_SENSORS_LTC2990 is not set # CONFIG_SENSORS_LTC4151 is not set # CONFIG_SENSORS_LTC4215 is not set # CONFIG_SENSORS_LTC4222 is not set # CONFIG_SENSORS_LTC4245 is not set # CONFIG_SENSORS_LTC4260 is not set # CONFIG_SENSORS_LTC4261 is not set # CONFIG_SENSORS_MAX16065 is not set # CONFIG_SENSORS_MAX1619 is not set # CONFIG_SENSORS_MAX1668 is not set # CONFIG_SENSORS_MAX197 is not set # CONFIG_SENSORS_MAX6621 is not set # CONFIG_SENSORS_MAX6639 is not set # CONFIG_SENSORS_MAX6642 is not set # CONFIG_SENSORS_MAX6650 is not set # CONFIG_SENSORS_MAX6697 is not set # CONFIG_SENSORS_MAX31790 is not set # CONFIG_SENSORS_MCP3021 is not set # CONFIG_SENSORS_TC654 is not set # CONFIG_SENSORS_LM63 is not set # CONFIG_SENSORS_LM73 is not set # CONFIG_SENSORS_LM75 is not set # CONFIG_SENSORS_LM77 is not set # CONFIG_SENSORS_LM78 is not set # CONFIG_SENSORS_LM80 is not set # CONFIG_SENSORS_LM83 is not set # CONFIG_SENSORS_LM85 is not set # CONFIG_SENSORS_LM87 is not set # CONFIG_SENSORS_LM90 is not set # CONFIG_SENSORS_LM92 is not set # CONFIG_SENSORS_LM93 is not set # CONFIG_SENSORS_LM95234 is not set # CONFIG_SENSORS_LM95241 is not set # CONFIG_SENSORS_LM95245 is not set # CONFIG_SENSORS_PC87360 is not set # CONFIG_SENSORS_PC87427 is not set # CONFIG_SENSORS_NTC_THERMISTOR is not set # CONFIG_SENSORS_NCT6683 is not set # CONFIG_SENSORS_NCT6775 is not set # CONFIG_SENSORS_NCT7802 is not set # CONFIG_SENSORS_NCT7904 is not set # CONFIG_SENSORS_NPCM7XX is not set # CONFIG_SENSORS_PCF8591 is not set # CONFIG_PMBUS is not set # CONFIG_SENSORS_SHT21 is not set # CONFIG_SENSORS_SHT3x is not set # CONFIG_SENSORS_SHTC1 is not set # CONFIG_SENSORS_SIS5595 is not set # CONFIG_SENSORS_DME1737 is not set # CONFIG_SENSORS_EMC1403 is not set # CONFIG_SENSORS_EMC2103 is not set # CONFIG_SENSORS_EMC6W201 is not set # CONFIG_SENSORS_SMSC47M1 is not set # CONFIG_SENSORS_SMSC47M192 is not set # CONFIG_SENSORS_SMSC47B397 is not set # CONFIG_SENSORS_STTS751 is not set # CONFIG_SENSORS_SMM665 is not set # CONFIG_SENSORS_ADC128D818 is not set # CONFIG_SENSORS_ADS1015 is not set # CONFIG_SENSORS_ADS7828 is not set # CONFIG_SENSORS_AMC6821 is not set # CONFIG_SENSORS_INA209 is not set # CONFIG_SENSORS_INA2XX is not set # CONFIG_SENSORS_INA3221 is not set # CONFIG_SENSORS_TC74 is not set # CONFIG_SENSORS_THMC50 is not set # CONFIG_SENSORS_TMP102 is not set # CONFIG_SENSORS_TMP103 is not set # CONFIG_SENSORS_TMP108 is not set # CONFIG_SENSORS_TMP401 is not set # CONFIG_SENSORS_TMP421 is not set # CONFIG_SENSORS_VIA686A is not set # CONFIG_SENSORS_VT1211 is not set # CONFIG_SENSORS_VT8231 is not set # CONFIG_SENSORS_W83773G is not set # CONFIG_SENSORS_W83781D is not set # CONFIG_SENSORS_W83791D is not set # CONFIG_SENSORS_W83792D is not set # CONFIG_SENSORS_W83793 is not set # CONFIG_SENSORS_W83795 is not set # CONFIG_SENSORS_W83L785TS is not set # CONFIG_SENSORS_W83L786NG is not set # CONFIG_SENSORS_W83627HF is not set # CONFIG_SENSORS_W83627EHF is not set # CONFIG_SENSORS_ULTRA45 is not set # CONFIG_THERMAL is not set # CONFIG_WATCHDOG is not set CONFIG_SSB_POSSIBLE=y # CONFIG_SSB is not set CONFIG_BCMA_POSSIBLE=y # CONFIG_BCMA is not set # # Multifunction device drivers # # CONFIG_MFD_ACT8945A is not set # CONFIG_MFD_AS3711 is not set # CONFIG_MFD_AS3722 is not set # CONFIG_PMIC_ADP5520 is not set # CONFIG_MFD_ATMEL_FLEXCOM is not set # CONFIG_MFD_ATMEL_HLCDC is not set # CONFIG_MFD_BCM590XX is not set # CONFIG_MFD_BD9571MWV is not set # CONFIG_MFD_AXP20X_I2C is not set # CONFIG_MFD_MADERA is not set # CONFIG_PMIC_DA903X is not set # CONFIG_MFD_DA9052_I2C is not set # CONFIG_MFD_DA9055 is not set # CONFIG_MFD_DA9062 is not set # CONFIG_MFD_DA9063 is not set # CONFIG_MFD_DA9150 is not set # CONFIG_MFD_DLN2 is not set # CONFIG_MFD_MC13XXX_I2C is not set # CONFIG_MFD_HI6421_PMIC is not set # CONFIG_HTC_PASIC3 is not set # CONFIG_LPC_ICH is not set # CONFIG_LPC_SCH is not set # CONFIG_MFD_JANZ_CMODIO is not set # CONFIG_MFD_KEMPLD is not set # CONFIG_MFD_88PM800 is not set # CONFIG_MFD_88PM805 is not set # CONFIG_MFD_88PM860X is not set # CONFIG_MFD_MAX14577 is not set # CONFIG_MFD_MAX77620 is not set # CONFIG_MFD_MAX77686 is not set # CONFIG_MFD_MAX77693 is not set # CONFIG_MFD_MAX77843 is not set # CONFIG_MFD_MAX8907 is not set # CONFIG_MFD_MAX8925 is not set # CONFIG_MFD_MAX8997 is not set # CONFIG_MFD_MAX8998 is not set # CONFIG_MFD_MT6397 is not set # CONFIG_MFD_MENF21BMC is not set # CONFIG_MFD_VIPERBOARD is not set # CONFIG_MFD_RETU is not set # CONFIG_MFD_PCF50633 is not set # CONFIG_MFD_RDC321X is not set # CONFIG_MFD_RT5033 is not set # CONFIG_MFD_RC5T583 is not set # CONFIG_MFD_RK808 is not set # CONFIG_MFD_RN5T618 is not set # CONFIG_MFD_SEC_CORE is not set # CONFIG_MFD_SI476X_CORE is not set # CONFIG_MFD_SM501 is not set # CONFIG_MFD_SKY81452 is not set # CONFIG_MFD_SMSC is not set # CONFIG_ABX500_CORE is not set # CONFIG_MFD_STMPE is not set # CONFIG_MFD_SYSCON is not set # CONFIG_MFD_TI_AM335X_TSCADC is not set # CONFIG_MFD_LP3943 is not set # CONFIG_MFD_LP8788 is not set # CONFIG_MFD_TI_LMU is not set # CONFIG_MFD_PALMAS is not set # CONFIG_TPS6105X is not set # CONFIG_TPS6507X is not set # CONFIG_MFD_TPS65086 is not set # CONFIG_MFD_TPS65090 is not set # CONFIG_MFD_TPS65217 is not set # CONFIG_MFD_TI_LP873X is not set # CONFIG_MFD_TI_LP87565 is not set # CONFIG_MFD_TPS65218 is not set # CONFIG_MFD_TPS6586X is not set # CONFIG_MFD_TPS65912_I2C is not set # CONFIG_MFD_TPS80031 is not set # CONFIG_TWL4030_CORE is not set # CONFIG_TWL6040_CORE is not set # CONFIG_MFD_WL1273_CORE is not set # CONFIG_MFD_LM3533 is not set # CONFIG_MFD_TC3589X is not set # CONFIG_MFD_VX855 is not set # CONFIG_MFD_ARIZONA_I2C is not set # CONFIG_MFD_WM8400 is not set # CONFIG_MFD_WM831X_I2C is not set # CONFIG_MFD_WM8350_I2C is not set # CONFIG_MFD_WM8994 is not set # CONFIG_REGULATOR is not set # CONFIG_RC_CORE is not set # CONFIG_MEDIA_SUPPORT is not set # # Graphics support # CONFIG_VGA_ARB=y CONFIG_VGA_ARB_MAX_GPUS=16 # CONFIG_DRM is not set # CONFIG_DRM_DP_CEC is not set # # ACP (Audio CoProcessor) Configuration # # # AMD Library routines # # # Frame buffer Devices # CONFIG_FB=y # CONFIG_FIRMWARE_EDID is not set CONFIG_FB_CMDLINE=y CONFIG_FB_NOTIFY=y CONFIG_FB_DDC=y CONFIG_FB_CFB_FILLRECT=y CONFIG_FB_CFB_COPYAREA=y CONFIG_FB_CFB_IMAGEBLIT=y # CONFIG_FB_FOREIGN_ENDIAN is not set CONFIG_FB_MODE_HELPERS=y CONFIG_FB_TILEBLITTING=y # # Frame buffer hardware drivers # # CONFIG_FB_GRVGA is not set # CONFIG_FB_CIRRUS is not set # CONFIG_FB_PM2 is not set # CONFIG_FB_ASILIANT is not set # CONFIG_FB_IMSTT is not set # CONFIG_FB_UVESA is not set CONFIG_FB_SBUS=y # CONFIG_FB_BW2 is not set # CONFIG_FB_CG3 is not set CONFIG_FB_CG6=y CONFIG_FB_FFB=y # CONFIG_FB_TCX is not set # CONFIG_FB_CG14 is not set # CONFIG_FB_P9100 is not set # CONFIG_FB_LEO is not set CONFIG_FB_XVR500=y CONFIG_FB_XVR2500=y CONFIG_FB_XVR1000=y # CONFIG_FB_OPENCORES is not set # CONFIG_FB_S1D13XXX is not set # CONFIG_FB_NVIDIA is not set # CONFIG_FB_RIVA is not set # CONFIG_FB_I740 is not set # CONFIG_FB_MATROX is not set CONFIG_FB_RADEON=y CONFIG_FB_RADEON_I2C=y # CONFIG_FB_RADEON_BACKLIGHT is not set # CONFIG_FB_RADEON_DEBUG is not set # CONFIG_FB_ATY128 is not set CONFIG_FB_ATY=y CONFIG_FB_ATY_CT=y # CONFIG_FB_ATY_GENERIC_LCD is not set CONFIG_FB_ATY_GX=y # CONFIG_FB_ATY_BACKLIGHT is not set # CONFIG_FB_S3 is not set # CONFIG_FB_SAVAGE is not set # CONFIG_FB_SIS is not set # CONFIG_FB_NEOMAGIC is not set # CONFIG_FB_KYRO is not set # CONFIG_FB_3DFX is not set # CONFIG_FB_VOODOO1 is not set # CONFIG_FB_VT8623 is not set # CONFIG_FB_TRIDENT is not set # CONFIG_FB_ARK is not set # CONFIG_FB_PM3 is not set # CONFIG_FB_CARMINE is not set # CONFIG_FB_SMSCUFX is not set # CONFIG_FB_UDL is not set # CONFIG_FB_IBM_GXT4500 is not set # CONFIG_FB_VIRTUAL is not set # CONFIG_FB_METRONOME is not set # CONFIG_FB_MB862XX is not set # CONFIG_FB_BROADSHEET is not set # CONFIG_FB_SIMPLE is not set # CONFIG_FB_SM712 is not set # CONFIG_BACKLIGHT_LCD_SUPPORT is not set # # Console display driver support # CONFIG_DUMMY_CONSOLE=y CONFIG_DUMMY_CONSOLE_COLUMNS=80 CONFIG_DUMMY_CONSOLE_ROWS=25 CONFIG_FRAMEBUFFER_CONSOLE=y CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y # CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set # CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER is not set CONFIG_LOGO=y # CONFIG_LOGO_LINUX_MONO is not set # CONFIG_LOGO_LINUX_VGA16 is not set # CONFIG_LOGO_LINUX_CLUT224 is not set CONFIG_LOGO_SUN_CLUT224=y CONFIG_SOUND=m CONFIG_SND=m CONFIG_SND_TIMER=m CONFIG_SND_PCM=m CONFIG_SND_SEQ_DEVICE=m CONFIG_SND_RAWMIDI=m # CONFIG_SND_OSSEMUL is not set CONFIG_SND_PCM_TIMER=y # CONFIG_SND_HRTIMER is not set # CONFIG_SND_DYNAMIC_MINORS is not set CONFIG_SND_SUPPORT_OLD_API=y CONFIG_SND_PROC_FS=y CONFIG_SND_VERBOSE_PROCFS=y # CONFIG_SND_VERBOSE_PRINTK is not set # CONFIG_SND_DEBUG is not set CONFIG_SND_SEQUENCER=m CONFIG_SND_SEQ_DUMMY=m CONFIG_SND_SEQ_MIDI_EVENT=m CONFIG_SND_SEQ_MIDI=m CONFIG_SND_SEQ_VIRMIDI=m CONFIG_SND_DRIVERS=y CONFIG_SND_DUMMY=m # CONFIG_SND_ALOOP is not set CONFIG_SND_VIRMIDI=m CONFIG_SND_MTPAV=m # CONFIG_SND_SERIAL_U16550 is not set # CONFIG_SND_MPU401 is not set CONFIG_SND_PCI=y # CONFIG_SND_AD1889 is not set # CONFIG_SND_ATIIXP is not set # CONFIG_SND_ATIIXP_MODEM is not set # CONFIG_SND_AU8810 is not set # CONFIG_SND_AU8820 is not set # CONFIG_SND_AU8830 is not set # CONFIG_SND_AW2 is not set # CONFIG_SND_BT87X is not set # CONFIG_SND_CA0106 is not set # CONFIG_SND_CMIPCI is not set # CONFIG_SND_OXYGEN is not set # CONFIG_SND_CS4281 is not set # CONFIG_SND_CS46XX is not set # CONFIG_SND_CTXFI is not set # CONFIG_SND_DARLA20 is not set # CONFIG_SND_GINA20 is not set # CONFIG_SND_LAYLA20 is not set # CONFIG_SND_DARLA24 is not set # CONFIG_SND_GINA24 is not set # CONFIG_SND_LAYLA24 is not set # CONFIG_SND_MONA is not set # CONFIG_SND_MIA is not set # CONFIG_SND_ECHO3G is not set # CONFIG_SND_INDIGO is not set # CONFIG_SND_INDIGOIO is not set # CONFIG_SND_INDIGODJ is not set # CONFIG_SND_INDIGOIOX is not set # CONFIG_SND_INDIGODJX is not set # CONFIG_SND_ENS1370 is not set # CONFIG_SND_ENS1371 is not set # CONFIG_SND_FM801 is not set # CONFIG_SND_HDSP is not set # CONFIG_SND_HDSPM is not set # CONFIG_SND_ICE1724 is not set # CONFIG_SND_INTEL8X0 is not set # CONFIG_SND_INTEL8X0M is not set # CONFIG_SND_KORG1212 is not set # CONFIG_SND_LOLA is not set # CONFIG_SND_LX6464ES is not set # CONFIG_SND_MIXART is not set # CONFIG_SND_NM256 is not set # CONFIG_SND_PCXHR is not set # CONFIG_SND_RIPTIDE is not set # CONFIG_SND_RME32 is not set # CONFIG_SND_RME96 is not set # CONFIG_SND_RME9652 is not set # CONFIG_SND_SE6X is not set # CONFIG_SND_VIA82XX is not set # CONFIG_SND_VIA82XX_MODEM is not set # CONFIG_SND_VIRTUOSO is not set # CONFIG_SND_VX222 is not set # CONFIG_SND_YMFPCI is not set # # HD-Audio # # CONFIG_SND_HDA_INTEL is not set CONFIG_SND_HDA_PREALLOC_SIZE=64 CONFIG_SND_USB=y # CONFIG_SND_USB_AUDIO is not set # CONFIG_SND_USB_UA101 is not set # CONFIG_SND_USB_CAIAQ is not set # CONFIG_SND_USB_6FIRE is not set # CONFIG_SND_USB_HIFACE is not set # CONFIG_SND_BCD2000 is not set # CONFIG_SND_USB_POD is not set # CONFIG_SND_USB_PODHD is not set # CONFIG_SND_USB_TONEPORT is not set # CONFIG_SND_USB_VARIAX is not set CONFIG_SND_SPARC=y # CONFIG_SND_SUN_AMD7930 is not set CONFIG_SND_SUN_CS4231=m # CONFIG_SND_SUN_DBRI is not set # CONFIG_SND_SOC is not set # # HID support # CONFIG_HID=y # CONFIG_HID_BATTERY_STRENGTH is not set # CONFIG_HIDRAW is not set # CONFIG_UHID is not set CONFIG_HID_GENERIC=y # # Special HID drivers # CONFIG_HID_A4TECH=y # CONFIG_HID_ACCUTOUCH is not set # CONFIG_HID_ACRUX is not set CONFIG_HID_APPLE=y # CONFIG_HID_APPLEIR is not set # CONFIG_HID_AUREAL is not set CONFIG_HID_BELKIN=y # CONFIG_HID_BETOP_FF is not set CONFIG_HID_CHERRY=y CONFIG_HID_CHICONY=y # CONFIG_HID_COUGAR is not set # CONFIG_HID_PRODIKEYS is not set # CONFIG_HID_CMEDIA is not set CONFIG_HID_CYPRESS=y CONFIG_HID_DRAGONRISE=y # CONFIG_DRAGONRISE_FF is not set # CONFIG_HID_EMS_FF is not set # CONFIG_HID_ELECOM is not set # CONFIG_HID_ELO is not set CONFIG_HID_EZKEY=y # CONFIG_HID_GEMBIRD is not set # CONFIG_HID_GFRM is not set # CONFIG_HID_HOLTEK is not set # CONFIG_HID_KEYTOUCH is not set # CONFIG_HID_KYE is not set # CONFIG_HID_UCLOGIC is not set # CONFIG_HID_WALTOP is not set CONFIG_HID_GYRATION=y # CONFIG_HID_ICADE is not set CONFIG_HID_ITE=y # CONFIG_HID_JABRA is not set CONFIG_HID_TWINHAN=y CONFIG_HID_KENSINGTON=y # CONFIG_HID_LCPOWER is not set # CONFIG_HID_LENOVO is not set CONFIG_HID_LOGITECH=y # CONFIG_HID_LOGITECH_HIDPP is not set # CONFIG_LOGITECH_FF is not set # CONFIG_LOGIRUMBLEPAD2_FF is not set # CONFIG_LOGIG940_FF is not set # CONFIG_LOGIWHEELS_FF is not set # CONFIG_HID_MAGICMOUSE is not set # CONFIG_HID_MAYFLASH is not set CONFIG_HID_REDRAGON=y CONFIG_HID_MICROSOFT=y CONFIG_HID_MONTEREY=y # CONFIG_HID_MULTITOUCH is not set # CONFIG_HID_NTI is not set CONFIG_HID_NTRIG=y CONFIG_HID_ORTEK=y CONFIG_HID_PANTHERLORD=y # CONFIG_PANTHERLORD_FF is not set # CONFIG_HID_PENMOUNT is not set CONFIG_HID_PETALYNX=y # CONFIG_HID_PICOLCD is not set # CONFIG_HID_PLANTRONICS is not set # CONFIG_HID_PRIMAX is not set # CONFIG_HID_RETRODE is not set # CONFIG_HID_ROCCAT is not set # CONFIG_HID_SAITEK is not set CONFIG_HID_SAMSUNG=y # CONFIG_HID_SPEEDLINK is not set # CONFIG_HID_STEAM is not set # CONFIG_HID_STEELSERIES is not set CONFIG_HID_SUNPLUS=y # CONFIG_HID_RMI is not set CONFIG_HID_GREENASIA=y # CONFIG_GREENASIA_FF is not set CONFIG_HID_SMARTJOYPLUS=y # CONFIG_SMARTJOYPLUS_FF is not set # CONFIG_HID_TIVO is not set CONFIG_HID_TOPSEED=y CONFIG_HID_THRUSTMASTER=y # CONFIG_THRUSTMASTER_FF is not set # CONFIG_HID_UDRAW_PS3 is not set # CONFIG_HID_WACOM is not set # CONFIG_HID_XINMO is not set CONFIG_HID_ZEROPLUS=y # CONFIG_ZEROPLUS_FF is not set # CONFIG_HID_ZYDACRON is not set # CONFIG_HID_SENSOR_HUB is not set # CONFIG_HID_ALPS is not set # # USB HID support # CONFIG_USB_HID=y # CONFIG_HID_PID is not set CONFIG_USB_HIDDEV=y # # I2C HID support # # CONFIG_I2C_HID is not set CONFIG_USB_OHCI_LITTLE_ENDIAN=y CONFIG_USB_SUPPORT=y CONFIG_USB_COMMON=y CONFIG_USB_ARCH_HAS_HCD=y CONFIG_USB=y CONFIG_USB_PCI=y # CONFIG_USB_ANNOUNCE_NEW_DEVICES is not set # # Miscellaneous USB options # CONFIG_USB_DEFAULT_PERSIST=y # CONFIG_USB_DYNAMIC_MINORS is not set # CONFIG_USB_OTG_WHITELIST is not set # CONFIG_USB_OTG_BLACKLIST_HUB is not set # CONFIG_USB_MON is not set # CONFIG_USB_WUSB_CBAF is not set # # USB Host Controller Drivers # # CONFIG_USB_C67X00_HCD is not set # CONFIG_USB_XHCI_HCD is not set CONFIG_USB_EHCI_HCD=m # CONFIG_USB_EHCI_ROOT_HUB_TT is not set # CONFIG_USB_EHCI_TT_NEWSCHED is not set CONFIG_USB_EHCI_PCI=m # CONFIG_USB_EHCI_HCD_PLATFORM is not set # CONFIG_USB_OXU210HP_HCD is not set # CONFIG_USB_ISP116X_HCD is not set # CONFIG_USB_FOTG210_HCD is not set CONFIG_USB_OHCI_HCD=y CONFIG_USB_OHCI_HCD_PCI=y # CONFIG_USB_OHCI_HCD_PLATFORM is not set CONFIG_USB_UHCI_HCD=m # CONFIG_USB_SL811_HCD is not set # CONFIG_USB_R8A66597_HCD is not set # CONFIG_USB_HCD_TEST_MODE is not set # # USB Device Class drivers # # CONFIG_USB_ACM is not set # CONFIG_USB_PRINTER is not set # CONFIG_USB_WDM is not set # CONFIG_USB_TMC is not set # # NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may # # # also be needed; see USB_STORAGE Help for more info # # # USB Imaging devices # # CONFIG_USB_MDC800 is not set # CONFIG_USBIP_CORE is not set # CONFIG_USB_MUSB_HDRC is not set # CONFIG_USB_DWC3 is not set # CONFIG_USB_DWC2 is not set # CONFIG_USB_CHIPIDEA is not set # CONFIG_USB_ISP1760 is not set # # USB port drivers # # CONFIG_USB_SERIAL is not set # # USB Miscellaneous drivers # # CONFIG_USB_EMI62 is not set # CONFIG_USB_EMI26 is not set # CONFIG_USB_ADUTUX is not set # CONFIG_USB_SEVSEG is not set # CONFIG_USB_RIO500 is not set # CONFIG_USB_LEGOTOWER is not set # CONFIG_USB_LCD is not set # CONFIG_USB_CYPRESS_CY7C63 is not set # CONFIG_USB_CYTHERM is not set # CONFIG_USB_IDMOUSE is not set # CONFIG_USB_FTDI_ELAN is not set # CONFIG_USB_APPLEDISPLAY is not set # CONFIG_USB_SISUSBVGA is not set # CONFIG_USB_LD is not set # CONFIG_USB_TRANCEVIBRATOR is not set # CONFIG_USB_IOWARRIOR is not set # CONFIG_USB_TEST is not set # CONFIG_USB_EHSET_TEST_FIXTURE is not set # CONFIG_USB_ISIGHTFW is not set # CONFIG_USB_YUREX is not set # CONFIG_USB_EZUSB_FX2 is not set # CONFIG_USB_HUB_USB251XB is not set # CONFIG_USB_HSIC_USB3503 is not set # CONFIG_USB_HSIC_USB4604 is not set # CONFIG_USB_LINK_LAYER_TEST is not set # CONFIG_USB_CHAOSKEY is not set # # USB Physical Layer drivers # # CONFIG_NOP_USB_XCEIV is not set # CONFIG_USB_ISP1301 is not set # CONFIG_USB_GADGET is not set # CONFIG_TYPEC is not set # CONFIG_USB_ULPI_BUS is not set # CONFIG_UWB is not set # CONFIG_MMC is not set # CONFIG_MEMSTICK is not set # CONFIG_NEW_LEDS is not set # CONFIG_ACCESSIBILITY is not set # CONFIG_INFINIBAND is not set CONFIG_RTC_LIB=y CONFIG_RTC_MC146818_LIB=y CONFIG_RTC_CLASS=y CONFIG_RTC_HCTOSYS=y CONFIG_RTC_HCTOSYS_DEVICE="rtc0" CONFIG_RTC_SYSTOHC=y CONFIG_RTC_SYSTOHC_DEVICE="rtc0" # CONFIG_RTC_DEBUG is not set CONFIG_RTC_NVMEM=y # # RTC interfaces # CONFIG_RTC_INTF_SYSFS=y CONFIG_RTC_INTF_PROC=y CONFIG_RTC_INTF_DEV=y # CONFIG_RTC_INTF_DEV_UIE_EMUL is not set # CONFIG_RTC_DRV_TEST is not set # # I2C RTC drivers # # CONFIG_RTC_DRV_ABB5ZES3 is not set # CONFIG_RTC_DRV_ABX80X is not set # CONFIG_RTC_DRV_DS1307 is not set # CONFIG_RTC_DRV_DS1374 is not set # CONFIG_RTC_DRV_DS1672 is not set # CONFIG_RTC_DRV_HYM8563 is not set # CONFIG_RTC_DRV_MAX6900 is not set # CONFIG_RTC_DRV_RS5C372 is not set # CONFIG_RTC_DRV_ISL1208 is not set # CONFIG_RTC_DRV_ISL12022 is not set # CONFIG_RTC_DRV_ISL12026 is not set # CONFIG_RTC_DRV_X1205 is not set # CONFIG_RTC_DRV_PCF8523 is not set # CONFIG_RTC_DRV_PCF85063 is not set # CONFIG_RTC_DRV_PCF85363 is not set # CONFIG_RTC_DRV_PCF8563 is not set # CONFIG_RTC_DRV_PCF8583 is not set # CONFIG_RTC_DRV_M41T80 is not set # CONFIG_RTC_DRV_BQ32K is not set # CONFIG_RTC_DRV_S35390A is not set # CONFIG_RTC_DRV_FM3130 is not set # CONFIG_RTC_DRV_RX8010 is not set # CONFIG_RTC_DRV_RX8581 is not set # CONFIG_RTC_DRV_RX8025 is not set # CONFIG_RTC_DRV_EM3027 is not set # CONFIG_RTC_DRV_RV8803 is not set # # SPI RTC drivers # CONFIG_RTC_I2C_AND_SPI=y # # SPI and I2C RTC drivers # # CONFIG_RTC_DRV_DS3232 is not set # CONFIG_RTC_DRV_PCF2127 is not set # CONFIG_RTC_DRV_RV3029C2 is not set # # Platform RTC drivers # CONFIG_RTC_DRV_CMOS=y # CONFIG_RTC_DRV_DS1286 is not set # CONFIG_RTC_DRV_DS1511 is not set # CONFIG_RTC_DRV_DS1553 is not set # CONFIG_RTC_DRV_DS1685_FAMILY is not set # CONFIG_RTC_DRV_DS1742 is not set # CONFIG_RTC_DRV_DS2404 is not set # CONFIG_RTC_DRV_STK17TA8 is not set # CONFIG_RTC_DRV_M48T86 is not set # CONFIG_RTC_DRV_M48T35 is not set CONFIG_RTC_DRV_M48T59=y # CONFIG_RTC_DRV_MSM6242 is not set CONFIG_RTC_DRV_BQ4802=y # CONFIG_RTC_DRV_RP5C01 is not set # CONFIG_RTC_DRV_V3020 is not set # CONFIG_RTC_DRV_ZYNQMP is not set # # on-CPU RTC drivers # CONFIG_RTC_DRV_SUN4V=y CONFIG_RTC_DRV_STARFIRE=y # CONFIG_RTC_DRV_FTRTC010 is not set # CONFIG_RTC_DRV_SNVS is not set # CONFIG_RTC_DRV_R7301 is not set # # HID Sensor RTC drivers # # CONFIG_RTC_DRV_HID_SENSOR_TIME is not set # CONFIG_DMADEVICES is not set # # DMABUF options # # CONFIG_SYNC_FILE is not set # CONFIG_AUXDISPLAY is not set # CONFIG_UIO is not set # CONFIG_VIRT_DRIVERS is not set CONFIG_VIRTIO_MENU=y # CONFIG_VIRTIO_PCI is not set # CONFIG_VIRTIO_MMIO is not set # # Microsoft Hyper-V guest support # # CONFIG_STAGING is not set # CONFIG_HWSPINLOCK is not set # # Clock Source drivers # # CONFIG_MAILBOX is not set CONFIG_IOMMU_SUPPORT=y # # Generic IOMMU Pagetable Support # # CONFIG_IOMMU_DEBUGFS is not set # # Remoteproc drivers # # CONFIG_REMOTEPROC is not set # # Rpmsg drivers # # CONFIG_RPMSG_VIRTIO is not set # CONFIG_SOUNDWIRE is not set # # SOC (System On Chip) specific Drivers # # # Amlogic SoC drivers # # # Broadcom SoC drivers # # # NXP/Freescale QorIQ SoC drivers # # # i.MX SoC drivers # # # Qualcomm SoC drivers # # CONFIG_SOC_TI is not set # # Xilinx SoC drivers # # CONFIG_XILINX_VCU is not set # CONFIG_PM_DEVFREQ is not set # CONFIG_EXTCON is not set # CONFIG_MEMORY is not set # CONFIG_IIO is not set # CONFIG_NTB is not set # CONFIG_VME_BUS is not set # CONFIG_PWM is not set # # IRQ chip support # CONFIG_ARM_GIC_MAX_NR=1 # CONFIG_IPACK_BUS is not set # CONFIG_RESET_CONTROLLER is not set # CONFIG_FMC is not set # # PHY Subsystem # # CONFIG_GENERIC_PHY is not set # CONFIG_BCM_KONA_USB2_PHY is not set # CONFIG_PHY_PXA_28NM_HSIC is not set # CONFIG_PHY_PXA_28NM_USB2 is not set # CONFIG_PHY_MAPPHONE_MDM6600 is not set # CONFIG_POWERCAP is not set # CONFIG_MCB is not set # CONFIG_RAS is not set # # Android # # CONFIG_ANDROID is not set # CONFIG_DAX is not set CONFIG_NVMEM=y # # HW tracing support # # CONFIG_STM is not set # CONFIG_INTEL_TH is not set # CONFIG_FPGA is not set # CONFIG_FSI is not set # CONFIG_SIOX is not set # CONFIG_SLIMBUS is not set # # File systems # CONFIG_VALIDATE_FS_PARSER=y CONFIG_EXPORTFS=y # CONFIG_EXPORTFS_BLOCK_OPS is not set CONFIG_FILE_LOCKING=y CONFIG_MANDATORY_FILE_LOCKING=y # CONFIG_FS_ENCRYPTION is not set # CONFIG_DNOTIFY is not set # CONFIG_INOTIFY_USER is not set # CONFIG_FANOTIFY is not set # CONFIG_QUOTA is not set # CONFIG_AUTOFS4_FS is not set # CONFIG_AUTOFS_FS is not set # CONFIG_FUSE_FS is not set # CONFIG_OVERLAY_FS is not set # # Caches # # CONFIG_FSCACHE is not set # # Pseudo filesystems # CONFIG_PROC_FS=y CONFIG_PROC_KCORE=y CONFIG_PROC_SYSCTL=y CONFIG_PROC_PAGE_MONITOR=y # CONFIG_PROC_CHILDREN is not set CONFIG_KERNFS=y CONFIG_SYSFS=y CONFIG_TMPFS=y # CONFIG_TMPFS_POSIX_ACL is not set # CONFIG_TMPFS_XATTR is not set CONFIG_HUGETLBFS=y CONFIG_HUGETLB_PAGE=y CONFIG_MEMFD_CREATE=y # CONFIG_CONFIGFS_FS is not set CONFIG_MISC_FILESYSTEMS=y # CONFIG_ORANGEFS_FS is not set # CONFIG_ECRYPT_FS is not set # CONFIG_CRAMFS is not set # CONFIG_PSTORE is not set CONFIG_NETWORK_FILESYSTEMS=y # CONFIG_NFS_FS is not set # CONFIG_NFSD is not set # CONFIG_CEPH_FS is not set # CONFIG_CIFS is not set # CONFIG_CODA_FS is not set # CONFIG_AFS_FS is not set CONFIG_NLS=y CONFIG_NLS_DEFAULT="iso8859-1" # CONFIG_NLS_CODEPAGE_437 is not set # CONFIG_NLS_CODEPAGE_737 is not set # CONFIG_NLS_CODEPAGE_775 is not set # CONFIG_NLS_CODEPAGE_850 is not set # CONFIG_NLS_CODEPAGE_852 is not set # CONFIG_NLS_CODEPAGE_855 is not set # CONFIG_NLS_CODEPAGE_857 is not set # CONFIG_NLS_CODEPAGE_860 is not set # CONFIG_NLS_CODEPAGE_861 is not set # CONFIG_NLS_CODEPAGE_862 is not set # CONFIG_NLS_CODEPAGE_863 is not set # CONFIG_NLS_CODEPAGE_864 is not set # CONFIG_NLS_CODEPAGE_865 is not set # CONFIG_NLS_CODEPAGE_866 is not set # CONFIG_NLS_CODEPAGE_869 is not set # CONFIG_NLS_CODEPAGE_936 is not set # CONFIG_NLS_CODEPAGE_950 is not set # CONFIG_NLS_CODEPAGE_932 is not set # CONFIG_NLS_CODEPAGE_949 is not set # CONFIG_NLS_CODEPAGE_874 is not set # CONFIG_NLS_ISO8859_8 is not set # CONFIG_NLS_CODEPAGE_1250 is not set # CONFIG_NLS_CODEPAGE_1251 is not set # CONFIG_NLS_ASCII is not set # CONFIG_NLS_ISO8859_1 is not set # CONFIG_NLS_ISO8859_2 is not set # CONFIG_NLS_ISO8859_3 is not set # CONFIG_NLS_ISO8859_4 is not set # CONFIG_NLS_ISO8859_5 is not set # CONFIG_NLS_ISO8859_6 is not set # CONFIG_NLS_ISO8859_7 is not set # CONFIG_NLS_ISO8859_9 is not set # CONFIG_NLS_ISO8859_13 is not set # CONFIG_NLS_ISO8859_14 is not set # CONFIG_NLS_ISO8859_15 is not set # CONFIG_NLS_KOI8_R is not set # CONFIG_NLS_KOI8_U is not set # CONFIG_NLS_MAC_ROMAN is not set # CONFIG_NLS_MAC_CELTIC is not set # CONFIG_NLS_MAC_CENTEURO is not set # CONFIG_NLS_MAC_CROATIAN is not set # CONFIG_NLS_MAC_CYRILLIC is not set # CONFIG_NLS_MAC_GAELIC is not set # CONFIG_NLS_MAC_GREEK is not set # CONFIG_NLS_MAC_ICELAND is not set # CONFIG_NLS_MAC_INUIT is not set # CONFIG_NLS_MAC_ROMANIAN is not set # CONFIG_NLS_MAC_TURKISH is not set # CONFIG_NLS_UTF8 is not set # # Security options # CONFIG_KEYS=y CONFIG_KEYS_COMPAT=y # CONFIG_PERSISTENT_KEYRINGS is not set # CONFIG_BIG_KEYS is not set # CONFIG_ENCRYPTED_KEYS is not set # CONFIG_KEY_DH_OPERATIONS is not set # CONFIG_SECURITY_DMESG_RESTRICT is not set # CONFIG_SECURITY is not set # CONFIG_SECURITYFS is not set CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y # CONFIG_HARDENED_USERCOPY is not set # CONFIG_STATIC_USERMODEHELPER is not set CONFIG_DEFAULT_SECURITY_DAC=y CONFIG_DEFAULT_SECURITY="" CONFIG_CRYPTO=y # # Crypto core or helper # CONFIG_CRYPTO_ALGAPI=y CONFIG_CRYPTO_ALGAPI2=y CONFIG_CRYPTO_AEAD=y CONFIG_CRYPTO_AEAD2=y CONFIG_CRYPTO_BLKCIPHER=y CONFIG_CRYPTO_BLKCIPHER2=y CONFIG_CRYPTO_HASH=y CONFIG_CRYPTO_HASH2=y CONFIG_CRYPTO_RNG=y CONFIG_CRYPTO_RNG2=y CONFIG_CRYPTO_RNG_DEFAULT=y CONFIG_CRYPTO_AKCIPHER2=y CONFIG_CRYPTO_KPP2=y CONFIG_CRYPTO_ACOMP2=y # CONFIG_CRYPTO_RSA is not set # CONFIG_CRYPTO_DH is not set # CONFIG_CRYPTO_ECDH is not set CONFIG_CRYPTO_MANAGER=y CONFIG_CRYPTO_MANAGER2=y # CONFIG_CRYPTO_USER is not set CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=y CONFIG_CRYPTO_GF128MUL=m CONFIG_CRYPTO_NULL=y CONFIG_CRYPTO_NULL2=y # CONFIG_CRYPTO_PCRYPT is not set CONFIG_CRYPTO_WORKQUEUE=y # CONFIG_CRYPTO_CRYPTD is not set # CONFIG_CRYPTO_MCRYPTD is not set CONFIG_CRYPTO_AUTHENC=y CONFIG_CRYPTO_TEST=m # # Authenticated Encryption with Associated Data # # CONFIG_CRYPTO_CCM is not set # CONFIG_CRYPTO_GCM is not set # CONFIG_CRYPTO_CHACHA20POLY1305 is not set # CONFIG_CRYPTO_AEGIS128 is not set # CONFIG_CRYPTO_AEGIS128L is not set # CONFIG_CRYPTO_AEGIS256 is not set # CONFIG_CRYPTO_MORUS640 is not set # CONFIG_CRYPTO_MORUS1280 is not set # CONFIG_CRYPTO_SEQIV is not set CONFIG_CRYPTO_ECHAINIV=y # # Block modes # CONFIG_CRYPTO_CBC=y # CONFIG_CRYPTO_CFB is not set # CONFIG_CRYPTO_CTR is not set # CONFIG_CRYPTO_CTS is not set CONFIG_CRYPTO_ECB=m CONFIG_CRYPTO_LRW=m CONFIG_CRYPTO_PCBC=m CONFIG_CRYPTO_XTS=m # CONFIG_CRYPTO_KEYWRAP is not set # # Hash modes # # CONFIG_CRYPTO_CMAC is not set CONFIG_CRYPTO_HMAC=y CONFIG_CRYPTO_XCBC=y # CONFIG_CRYPTO_VMAC is not set # # Digest # CONFIG_CRYPTO_CRC32C=y # CONFIG_CRYPTO_CRC32C_SPARC64 is not set # CONFIG_CRYPTO_CRC32 is not set # CONFIG_CRYPTO_CRCT10DIF is not set # CONFIG_CRYPTO_GHASH is not set # CONFIG_CRYPTO_POLY1305 is not set CONFIG_CRYPTO_MD4=y CONFIG_CRYPTO_MD5=y # CONFIG_CRYPTO_MD5_SPARC64 is not set CONFIG_CRYPTO_MICHAEL_MIC=m # CONFIG_CRYPTO_RMD128 is not set # CONFIG_CRYPTO_RMD160 is not set # CONFIG_CRYPTO_RMD256 is not set # CONFIG_CRYPTO_RMD320 is not set CONFIG_CRYPTO_SHA1=y # CONFIG_CRYPTO_SHA1_SPARC64 is not set CONFIG_CRYPTO_SHA256=y # CONFIG_CRYPTO_SHA256_SPARC64 is not set CONFIG_CRYPTO_SHA512=m # CONFIG_CRYPTO_SHA512_SPARC64 is not set # CONFIG_CRYPTO_SHA3 is not set # CONFIG_CRYPTO_SM3 is not set CONFIG_CRYPTO_TGR192=m CONFIG_CRYPTO_WP512=m # # Ciphers # CONFIG_CRYPTO_AES=y # CONFIG_CRYPTO_AES_TI is not set # CONFIG_CRYPTO_AES_SPARC64 is not set CONFIG_CRYPTO_ANUBIS=m CONFIG_CRYPTO_ARC4=m CONFIG_CRYPTO_BLOWFISH=m CONFIG_CRYPTO_BLOWFISH_COMMON=m CONFIG_CRYPTO_CAMELLIA=m # CONFIG_CRYPTO_CAMELLIA_SPARC64 is not set CONFIG_CRYPTO_CAST_COMMON=m CONFIG_CRYPTO_CAST5=m CONFIG_CRYPTO_CAST6=m CONFIG_CRYPTO_DES=y # CONFIG_CRYPTO_DES_SPARC64 is not set CONFIG_CRYPTO_FCRYPT=m CONFIG_CRYPTO_KHAZAD=m # CONFIG_CRYPTO_SALSA20 is not set # CONFIG_CRYPTO_CHACHA20 is not set CONFIG_CRYPTO_SEED=m CONFIG_CRYPTO_SERPENT=m # CONFIG_CRYPTO_SM4 is not set # CONFIG_CRYPTO_SPECK is not set CONFIG_CRYPTO_TEA=m CONFIG_CRYPTO_TWOFISH=m CONFIG_CRYPTO_TWOFISH_COMMON=m # # Compression # CONFIG_CRYPTO_DEFLATE=y # CONFIG_CRYPTO_LZO is not set # CONFIG_CRYPTO_842 is not set # CONFIG_CRYPTO_LZ4 is not set # CONFIG_CRYPTO_LZ4HC is not set # CONFIG_CRYPTO_ZSTD is not set # # Random Number Generation # # CONFIG_CRYPTO_ANSI_CPRNG is not set CONFIG_CRYPTO_DRBG_MENU=y CONFIG_CRYPTO_DRBG_HMAC=y # CONFIG_CRYPTO_DRBG_HASH is not set CONFIG_CRYPTO_DRBG=y CONFIG_CRYPTO_JITTERENTROPY=y # CONFIG_CRYPTO_USER_API_HASH is not set # CONFIG_CRYPTO_USER_API_SKCIPHER is not set # CONFIG_CRYPTO_USER_API_RNG is not set # CONFIG_CRYPTO_USER_API_AEAD is not set CONFIG_CRYPTO_HW=y # CONFIG_CRYPTO_DEV_NIAGARA2 is not set # CONFIG_CRYPTO_DEV_NITROX_CNN55XX is not set # CONFIG_CRYPTO_DEV_CCREE is not set # CONFIG_ASYMMETRIC_KEY_TYPE is not set # # Certificates for signature checking # # CONFIG_SYSTEM_BLACKLIST_KEYRING is not set CONFIG_BINARY_PRINTF=y # # Library routines # CONFIG_BITREVERSE=y CONFIG_GENERIC_STRNCPY_FROM_USER=y CONFIG_GENERIC_STRNLEN_USER=y CONFIG_GENERIC_NET_UTILS=y CONFIG_GENERIC_PCI_IOMAP=y CONFIG_CRC_CCITT=m CONFIG_CRC16=y # CONFIG_CRC_T10DIF is not set # CONFIG_CRC_ITU_T is not set CONFIG_CRC32=y # CONFIG_CRC32_SELFTEST is not set CONFIG_CRC32_SLICEBY8=y # CONFIG_CRC32_SLICEBY4 is not set # CONFIG_CRC32_SARWATE is not set # CONFIG_CRC32_BIT is not set # CONFIG_CRC64 is not set # CONFIG_CRC4 is not set # CONFIG_CRC7 is not set CONFIG_LIBCRC32C=m # CONFIG_CRC8 is not set # CONFIG_RANDOM32_SELFTEST is not set CONFIG_ZLIB_INFLATE=y CONFIG_ZLIB_DEFLATE=y CONFIG_LZO_DECOMPRESS=y CONFIG_LZ4_DECOMPRESS=y CONFIG_XZ_DEC=y CONFIG_XZ_DEC_X86=y CONFIG_XZ_DEC_POWERPC=y CONFIG_XZ_DEC_IA64=y CONFIG_XZ_DEC_ARM=y CONFIG_XZ_DEC_ARMTHUMB=y CONFIG_XZ_DEC_SPARC=y CONFIG_XZ_DEC_BCJ=y # CONFIG_XZ_DEC_TEST is not set CONFIG_DECOMPRESS_GZIP=y CONFIG_DECOMPRESS_BZIP2=y CONFIG_DECOMPRESS_LZMA=y CONFIG_DECOMPRESS_XZ=y CONFIG_DECOMPRESS_LZO=y CONFIG_DECOMPRESS_LZ4=y CONFIG_ASSOCIATIVE_ARRAY=y CONFIG_HAS_IOMEM=y CONFIG_HAS_IOPORT_MAP=y CONFIG_HAS_DMA=y CONFIG_NEED_SG_DMA_LENGTH=y CONFIG_NEED_DMA_MAP_STATE=y CONFIG_ARCH_DMA_ADDR_T_64BIT=y CONFIG_SGL_ALLOC=y CONFIG_IOMMU_HELPER=y CONFIG_CPU_RMAP=y CONFIG_DQL=y CONFIG_GLOB=y # CONFIG_GLOB_SELFTEST is not set CONFIG_NLATTR=y # CONFIG_CORDIC is not set # CONFIG_DDR is not set # CONFIG_IRQ_POLL is not set CONFIG_FONT_SUPPORT=y CONFIG_FONTS=y # CONFIG_FONT_8x8 is not set # CONFIG_FONT_8x16 is not set # CONFIG_FONT_6x11 is not set # CONFIG_FONT_7x14 is not set # CONFIG_FONT_PEARL_8x8 is not set # CONFIG_FONT_ACORN_8x8 is not set # CONFIG_FONT_10x18 is not set CONFIG_FONT_SUN8x16=y # CONFIG_FONT_SUN12x22 is not set CONFIG_ARCH_HAS_SG_CHAIN=y # CONFIG_STRING_SELFTEST is not set # # Kernel hacking # # # printk and dmesg options # CONFIG_PRINTK_TIME=y CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7 CONFIG_CONSOLE_LOGLEVEL_QUIET=4 CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4 # CONFIG_BOOT_PRINTK_DELAY is not set # CONFIG_DYNAMIC_DEBUG is not set # # Compile-time checks and compiler options # # CONFIG_DEBUG_INFO is not set # CONFIG_ENABLE_WARN_DEPRECATED is not set CONFIG_ENABLE_MUST_CHECK=y CONFIG_FRAME_WARN=2048 # CONFIG_STRIP_ASM_SYMS is not set # CONFIG_READABLE_ASM is not set # CONFIG_UNUSED_SYMBOLS is not set # CONFIG_PAGE_OWNER is not set CONFIG_DEBUG_FS=y # CONFIG_HEADERS_CHECK is not set # CONFIG_DEBUG_SECTION_MISMATCH is not set CONFIG_SECTION_MISMATCH_WARN_ONLY=y # CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set CONFIG_MAGIC_SYSRQ=y CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x1 CONFIG_MAGIC_SYSRQ_SERIAL=y CONFIG_DEBUG_KERNEL=y # # Memory Debugging # # CONFIG_PAGE_EXTENSION is not set # CONFIG_DEBUG_PAGEALLOC is not set # CONFIG_PAGE_POISONING is not set # CONFIG_DEBUG_PAGE_REF is not set # CONFIG_DEBUG_OBJECTS is not set # CONFIG_DEBUG_SLAB is not set CONFIG_HAVE_DEBUG_KMEMLEAK=y # CONFIG_DEBUG_KMEMLEAK is not set # CONFIG_DEBUG_STACK_USAGE is not set # CONFIG_DEBUG_VM is not set # CONFIG_DEBUG_MEMORY_INIT is not set # CONFIG_DEBUG_PER_CPU_MAPS is not set CONFIG_CC_HAS_SANCOV_TRACE_PC=y # CONFIG_DEBUG_SHIRQ is not set # # Debug Lockups and Hangs # # CONFIG_SOFTLOCKUP_DETECTOR is not set CONFIG_DETECT_HUNG_TASK=y CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=120 # CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set CONFIG_BOOTPARAM_HUNG_TASK_PANIC_VALUE=0 # CONFIG_WQ_WATCHDOG is not set # CONFIG_PANIC_ON_OOPS is not set CONFIG_PANIC_ON_OOPS_VALUE=0 CONFIG_PANIC_TIMEOUT=0 # CONFIG_SCHED_DEBUG is not set CONFIG_SCHED_INFO=y CONFIG_SCHEDSTATS=y # CONFIG_SCHED_STACK_END_CHECK is not set # CONFIG_DEBUG_TIMEKEEPING is not set # # Lock Debugging (spinlocks, mutexes, etc...) # CONFIG_LOCK_DEBUGGING_SUPPORT=y # CONFIG_PROVE_LOCKING is not set # CONFIG_LOCK_STAT is not set # CONFIG_DEBUG_RT_MUTEXES is not set # CONFIG_DEBUG_SPINLOCK is not set # CONFIG_DEBUG_MUTEXES is not set # CONFIG_DEBUG_WW_MUTEX_SLOWPATH is not set # CONFIG_DEBUG_RWSEMS is not set # CONFIG_DEBUG_LOCK_ALLOC is not set # CONFIG_DEBUG_ATOMIC_SLEEP is not set # CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set # CONFIG_LOCK_TORTURE_TEST is not set # CONFIG_WW_MUTEX_SELFTEST is not set CONFIG_STACKTRACE=y # CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set # CONFIG_DEBUG_KOBJECT is not set CONFIG_HAVE_DEBUG_BUGVERBOSE=y CONFIG_DEBUG_BUGVERBOSE=y # CONFIG_DEBUG_LIST is not set # CONFIG_DEBUG_PI_LIST is not set # CONFIG_DEBUG_SG is not set # CONFIG_DEBUG_NOTIFIERS is not set # CONFIG_DEBUG_CREDENTIALS is not set # # RCU Debugging # # CONFIG_RCU_PERF_TEST is not set # CONFIG_RCU_TORTURE_TEST is not set CONFIG_RCU_CPU_STALL_TIMEOUT=21 CONFIG_RCU_TRACE=y # CONFIG_RCU_EQS_DEBUG is not set # CONFIG_DEBUG_WQ_FORCE_RR_CPU is not set # CONFIG_CPU_HOTPLUG_STATE_CONTROL is not set # CONFIG_NOTIFIER_ERROR_INJECTION is not set # CONFIG_FAULT_INJECTION is not set # CONFIG_LATENCYTOP is not set CONFIG_NOP_TRACER=y CONFIG_HAVE_FUNCTION_TRACER=y CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y CONFIG_HAVE_DYNAMIC_FTRACE=y CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y CONFIG_HAVE_SYSCALL_TRACEPOINTS=y CONFIG_HAVE_C_RECORDMCOUNT=y CONFIG_TRACE_CLOCK=y CONFIG_RING_BUFFER=y CONFIG_EVENT_TRACING=y CONFIG_CONTEXT_SWITCH_TRACER=y CONFIG_RING_BUFFER_ALLOW_SWAP=y CONFIG_TRACING=y CONFIG_TRACING_SUPPORT=y CONFIG_FTRACE=y # CONFIG_FUNCTION_TRACER is not set # CONFIG_PREEMPTIRQ_EVENTS is not set # CONFIG_IRQSOFF_TRACER is not set # CONFIG_SCHED_TRACER is not set # CONFIG_HWLAT_TRACER is not set # CONFIG_ENABLE_DEFAULT_TRACERS is not set # CONFIG_FTRACE_SYSCALLS is not set # CONFIG_TRACER_SNAPSHOT is not set CONFIG_BRANCH_PROFILE_NONE=y # CONFIG_PROFILE_ANNOTATED_BRANCHES is not set # CONFIG_PROFILE_ALL_BRANCHES is not set # CONFIG_STACK_TRACER is not set CONFIG_KPROBE_EVENTS=y CONFIG_PROBE_EVENTS=y # CONFIG_HIST_TRIGGERS is not set # CONFIG_TRACEPOINT_BENCHMARK is not set # CONFIG_RING_BUFFER_BENCHMARK is not set # CONFIG_RING_BUFFER_STARTUP_TEST is not set # CONFIG_TRACE_EVAL_MAP_FILE is not set # CONFIG_DMA_API_DEBUG is not set CONFIG_RUNTIME_TESTING_MENU=y # CONFIG_TEST_LIST_SORT is not set # CONFIG_TEST_SORT is not set # CONFIG_KPROBES_SANITY_TEST is not set # CONFIG_BACKTRACE_SELF_TEST is not set # CONFIG_RBTREE_TEST is not set # CONFIG_INTERVAL_TREE_TEST is not set # CONFIG_PERCPU_TEST is not set # CONFIG_ATOMIC64_SELFTEST is not set # CONFIG_TEST_HEXDUMP is not set # CONFIG_TEST_STRING_HELPERS is not set # CONFIG_TEST_KSTRTOX is not set # CONFIG_TEST_PRINTF is not set # CONFIG_TEST_BITMAP is not set # CONFIG_TEST_BITFIELD is not set # CONFIG_TEST_UUID is not set # CONFIG_TEST_XARRAY is not set # CONFIG_TEST_OVERFLOW is not set # CONFIG_TEST_RHASHTABLE is not set # CONFIG_TEST_HASH is not set # CONFIG_TEST_IDA is not set # CONFIG_TEST_LKM is not set # CONFIG_TEST_USER_COPY is not set # CONFIG_TEST_BPF is not set # CONFIG_FIND_BIT_BENCHMARK is not set # CONFIG_TEST_FIRMWARE is not set # CONFIG_TEST_SYSCTL is not set # CONFIG_TEST_UDELAY is not set # CONFIG_TEST_STATIC_KEYS is not set # CONFIG_MEMTEST is not set # CONFIG_BUG_ON_DATA_CORRUPTION is not set # CONFIG_SAMPLES is not set CONFIG_HAVE_ARCH_KGDB=y # CONFIG_KGDB is not set # CONFIG_UBSAN is not set # CONFIG_DEBUG_AID_FOR_SYZBOT is not set CONFIG_TRACE_IRQFLAGS_SUPPORT=y # CONFIG_DEBUG_DCFLUSH is not set
On 08.08.2018 10:20, Michal Hocko wrote: > On Tue 07-08-18 18:37:36, Kirill Tkhai wrote: >> This patch kills all CONFIG_SRCU defines and >> the code under !CONFIG_SRCU. > > The last time somebody tried to do this there was a pushback due to > kernel tinyfication. So this should really give some numbers about the > code size increase. Also why can't we make this depend on MMU. Is > anybody else than the reclaim asking for unconditional SRCU usage? I don't know one. The size numbers (sparc64) are: $ size image.srcu.disabled text data bss dec hex filename 5117546 8030506 1968104 15116156 e6a77c image.srcu.disabled $ size image.srcu.enabled text data bss dec hex filename 5126175 8064346 1968104 15158625 e74d61 image.srcu.enabled The difference is: 15158625-15116156 = 42469 ~41Kb Please, see the measurement details to my answer to Stephen. > Btw. I totaly agree with Steven. This is a very poor changelog. It is > trivial to see what the patch does but it is far from clear why it is > doing that and why we cannot go other ways. We possibly can go another way, and there is comment to [2/10] about this. Percpu rwsem may be used instead, the only thing, it is worse, is it will make shrink_slab() wait unregistering shrinkers, while srcu-based implementation does not require this. This may be not a big problem. But, if SRCU is real problem for embedded people, I really don't want they hate me in the future because of this, so please CC someone if you know :) Kirill
[CC Josh - the whole series is http://lkml.kernel.org/r/153365347929.19074.12509495712735843805.stgit@localhost.localdomain] On Wed 08-08-18 13:17:44, Kirill Tkhai wrote: > On 08.08.2018 10:20, Michal Hocko wrote: > > On Tue 07-08-18 18:37:36, Kirill Tkhai wrote: > >> This patch kills all CONFIG_SRCU defines and > >> the code under !CONFIG_SRCU. > > > > The last time somebody tried to do this there was a pushback due to > > kernel tinyfication. So this should really give some numbers about the > > code size increase. Also why can't we make this depend on MMU. Is > > anybody else than the reclaim asking for unconditional SRCU usage? > > I don't know one. The size numbers (sparc64) are: > > $ size image.srcu.disabled > text data bss dec hex filename > 5117546 8030506 1968104 15116156 e6a77c image.srcu.disabled > $ size image.srcu.enabled > text data bss dec hex filename > 5126175 8064346 1968104 15158625 e74d61 image.srcu.enabled > The difference is: 15158625-15116156 = 42469 ~41Kb > > Please, see the measurement details to my answer to Stephen. > > > Btw. I totaly agree with Steven. This is a very poor changelog. It is > > trivial to see what the patch does but it is far from clear why it is > > doing that and why we cannot go other ways. > We possibly can go another way, and there is comment to [2/10] about this. > Percpu rwsem may be used instead, the only thing, it is worse, is it will > make shrink_slab() wait unregistering shrinkers, while srcu-based > implementation does not require this. Well, if unregisterring doesn't do anything subtle - e.g. an allocation or take locks which depend on allocation - and we can guarantee that then blocking shrink_slab shouldn't be a big deal. It is subtle though. Maybe subtle enough to make unconditional SRCU worth it. This all should be in the changelog though. > This may be not a big problem. > But, if SRCU is real problem for embedded people, I really don't want they > hate me in the future because of this, so please CC someone if you know :) I guess Josh was trying to pursue kernel tinification.
Hi Kirill, On Wed, 8 Aug 2018 12:59:40 +0300 Kirill Tkhai <ktkhai@virtuozzo.com> wrote: > > On 08.08.2018 04:08, Stephen Rothwell wrote: > > > > So what sort of overheads (in terms of code size and performance) are > > we adding by having SRCU enabled where it used not to be? > > SRCU is unconditionally enabled for x86, so I had to use another arch (sparc64) > to check the size difference. The config, I used to compile, is attached, SRCU > was enabled via: > > diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig > index 2d58c26bff9a..6e9116e356d4 100644 > --- a/arch/sparc/Kconfig > +++ b/arch/sparc/Kconfig > @@ -15,6 +15,7 @@ config SPARC > select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI > select ARCH_MIGHT_HAVE_PC_SERIO > select OF > + select SRCU > select OF_PROMTREE > select HAVE_IDE > select HAVE_OPROFILE > > $ size image.srcu.disabled > text data bss dec hex filename > 5117546 8030506 1968104 15116156 e6a77c image.srcu.disabled > > $ size image.srcu.enabled > text data bss dec hex filename > 5126175 8064346 1968104 15158625 e74d61 image.srcu.enabled > > The difference is: 15158625-15116156 = 42469 ~41Kb Thanks for that. > I have not ideas about performance overhead measurements. If you have ideas, > where they may occur, please say. At the first sight, there should not be > a problem, since SRCU is enabled in x86 by default. I have no idea, just asking questions that might be relevant for platforms where SRCU is normally disabled.
On Wed, Aug 08, 2018 at 01:17:44PM +0300, Kirill Tkhai wrote: > On 08.08.2018 10:20, Michal Hocko wrote: > > On Tue 07-08-18 18:37:36, Kirill Tkhai wrote: > >> This patch kills all CONFIG_SRCU defines and > >> the code under !CONFIG_SRCU. > > > > The last time somebody tried to do this there was a pushback due to > > kernel tinyfication. So this should really give some numbers about the > > code size increase. Also why can't we make this depend on MMU. Is > > anybody else than the reclaim asking for unconditional SRCU usage? > > I don't know one. The size numbers (sparc64) are: > > $ size image.srcu.disabled > text data bss dec hex filename > 5117546 8030506 1968104 15116156 e6a77c image.srcu.disabled > $ size image.srcu.enabled > text data bss dec hex filename > 5126175 8064346 1968104 15158625 e74d61 image.srcu.enabled > The difference is: 15158625-15116156 = 42469 ~41Kb 41k is a *substantial* size increase. However, can you compare tinyconfig with and without this patch? That may have a smaller change.
On 08.08.2018 19:13, Josh Triplett wrote: > On Wed, Aug 08, 2018 at 01:17:44PM +0300, Kirill Tkhai wrote: >> On 08.08.2018 10:20, Michal Hocko wrote: >>> On Tue 07-08-18 18:37:36, Kirill Tkhai wrote: >>>> This patch kills all CONFIG_SRCU defines and >>>> the code under !CONFIG_SRCU. >>> >>> The last time somebody tried to do this there was a pushback due to >>> kernel tinyfication. So this should really give some numbers about the >>> code size increase. Also why can't we make this depend on MMU. Is >>> anybody else than the reclaim asking for unconditional SRCU usage? >> >> I don't know one. The size numbers (sparc64) are: >> >> $ size image.srcu.disabled >> text data bss dec hex filename >> 5117546 8030506 1968104 15116156 e6a77c image.srcu.disabled >> $ size image.srcu.enabled >> text data bss dec hex filename >> 5126175 8064346 1968104 15158625 e74d61 image.srcu.enabled >> The difference is: 15158625-15116156 = 42469 ~41Kb > > 41k is a *substantial* size increase. However, can you compare > tinyconfig with and without this patch? That may have a smaller change. $ size image.srcu.disabled text data bss dec hex filename 1105900 195456 63232 1364588 14d26c image.srcu.disabled $ size image.srcu.enabled text data bss dec hex filename 1106960 195528 63232 1365720 14d6d8 image.srcu.enabled 1365720-1364588 = 1132 ~ 1Kb
On 08.08.2018 19:23, Kirill Tkhai wrote: > On 08.08.2018 19:13, Josh Triplett wrote: >> On Wed, Aug 08, 2018 at 01:17:44PM +0300, Kirill Tkhai wrote: >>> On 08.08.2018 10:20, Michal Hocko wrote: >>>> On Tue 07-08-18 18:37:36, Kirill Tkhai wrote: >>>>> This patch kills all CONFIG_SRCU defines and >>>>> the code under !CONFIG_SRCU. >>>> >>>> The last time somebody tried to do this there was a pushback due to >>>> kernel tinyfication. So this should really give some numbers about the >>>> code size increase. Also why can't we make this depend on MMU. Is >>>> anybody else than the reclaim asking for unconditional SRCU usage? >>> >>> I don't know one. The size numbers (sparc64) are: >>> >>> $ size image.srcu.disabled >>> text data bss dec hex filename >>> 5117546 8030506 1968104 15116156 e6a77c image.srcu.disabled >>> $ size image.srcu.enabled >>> text data bss dec hex filename >>> 5126175 8064346 1968104 15158625 e74d61 image.srcu.enabled >>> The difference is: 15158625-15116156 = 42469 ~41Kb >> >> 41k is a *substantial* size increase. However, can you compare >> tinyconfig with and without this patch? That may have a smaller change. > > $ size image.srcu.disabled > text data bss dec hex filename > 1105900 195456 63232 1364588 14d26c image.srcu.disabled > > $ size image.srcu.enabled > text data bss dec hex filename > 1106960 195528 63232 1365720 14d6d8 image.srcu.enabled > > 1365720-1364588 = 1132 ~ 1Kb 1Kb is not huge size. It looks as not a big price for writing generic code for only case (now some places have CONFIG_SRCU and !CONFIG_SRCU variants, e.g. drivers/base/core.c). What do you think?
On Wed, Aug 08, 2018 at 07:30:13PM +0300, Kirill Tkhai wrote: > On 08.08.2018 19:23, Kirill Tkhai wrote: > > On 08.08.2018 19:13, Josh Triplett wrote: > >> On Wed, Aug 08, 2018 at 01:17:44PM +0300, Kirill Tkhai wrote: > >>> On 08.08.2018 10:20, Michal Hocko wrote: > >>>> On Tue 07-08-18 18:37:36, Kirill Tkhai wrote: > >>>>> This patch kills all CONFIG_SRCU defines and > >>>>> the code under !CONFIG_SRCU. > >>>> > >>>> The last time somebody tried to do this there was a pushback due to > >>>> kernel tinyfication. So this should really give some numbers about the > >>>> code size increase. Also why can't we make this depend on MMU. Is > >>>> anybody else than the reclaim asking for unconditional SRCU usage? > >>> > >>> I don't know one. The size numbers (sparc64) are: > >>> > >>> $ size image.srcu.disabled > >>> text data bss dec hex filename > >>> 5117546 8030506 1968104 15116156 e6a77c image.srcu.disabled > >>> $ size image.srcu.enabled > >>> text data bss dec hex filename > >>> 5126175 8064346 1968104 15158625 e74d61 image.srcu.enabled > >>> The difference is: 15158625-15116156 = 42469 ~41Kb > >> > >> 41k is a *substantial* size increase. However, can you compare > >> tinyconfig with and without this patch? That may have a smaller change. > > > > $ size image.srcu.disabled > > text data bss dec hex filename > > 1105900 195456 63232 1364588 14d26c image.srcu.disabled > > > > $ size image.srcu.enabled > > text data bss dec hex filename > > 1106960 195528 63232 1365720 14d6d8 image.srcu.enabled > > > > 1365720-1364588 = 1132 ~ 1Kb > > 1Kb is not huge size. It looks as not a big price for writing generic code > for only case (now some places have CONFIG_SRCU and !CONFIG_SRCU variants, > e.g. drivers/base/core.c). What do you think? That's a little more reasonable than 41k, likely because of CONFIG_TINY_SRCU. That's still not ideal, though. And as far as I can tell, the *only* two pieces of core code that use SRCU are drivers/base/core.c and kernel/notifier.c, and the latter is exclusively code to use notifiers with SRCU, not notifiers wanting to use SRCU themselves. So, as far as I can tell, this would really just save a couple of small #ifdef sections in drivers/base/core.c, and I think those #ifdef sections could be simplified even further. That doesn't seem worth it at all.
On Wed, Aug 08, 2018 at 12:27:34PM +0200, Michal Hocko wrote: > [CC Josh - the whole series is > http://lkml.kernel.org/r/153365347929.19074.12509495712735843805.stgit@localhost.localdomain] > > On Wed 08-08-18 13:17:44, Kirill Tkhai wrote: > > On 08.08.2018 10:20, Michal Hocko wrote: > > > On Tue 07-08-18 18:37:36, Kirill Tkhai wrote: > > >> This patch kills all CONFIG_SRCU defines and > > >> the code under !CONFIG_SRCU. > > > > > > The last time somebody tried to do this there was a pushback due to > > > kernel tinyfication. So this should really give some numbers about the > > > code size increase. Also why can't we make this depend on MMU. Is > > > anybody else than the reclaim asking for unconditional SRCU usage? > > > > I don't know one. The size numbers (sparc64) are: > > > > $ size image.srcu.disabled > > text data bss dec hex filename > > 5117546 8030506 1968104 15116156 e6a77c image.srcu.disabled > > $ size image.srcu.enabled > > text data bss dec hex filename > > 5126175 8064346 1968104 15158625 e74d61 image.srcu.enabled > > The difference is: 15158625-15116156 = 42469 ~41Kb > > > > Please, see the measurement details to my answer to Stephen. > > > > > Btw. I totaly agree with Steven. This is a very poor changelog. It is > > > trivial to see what the patch does but it is far from clear why it is > > > doing that and why we cannot go other ways. > > We possibly can go another way, and there is comment to [2/10] about this. > > Percpu rwsem may be used instead, the only thing, it is worse, is it will > > make shrink_slab() wait unregistering shrinkers, while srcu-based > > implementation does not require this. > > Well, if unregisterring doesn't do anything subtle - e.g. an allocation > or take locks which depend on allocation - and we can guarantee that > then blocking shrink_slab shouldn't be a big deal. unregister_shrinker() already blocks shrink_slab - taking a rwsem in write mode blocks all readers - so using a per-cpu rwsem doesn't introduce anything new or unexpected. I'd like to see numbers of the different methods before anything else. IMO, the big deal is that the split unregister mechanism seems to imply superblock shrinkers can be called during sb teardown or /after/ the filesystem has been torn down in memory (i.e. after ->put_super() is called). That's a change of behaviour, but it's left to the filesystem to detect and handle that condition. That's exceedingly subtle and looks like a recipe for disaster to me. I note that XFS hasn't been updated to detect and avoid this landmine. And, FWIW, filesystems with multiple shrinkers (e.g. XFS as 3 per mount) will take the SCRU penalty multiple times during unmount, and potentially be exposed to multiple different "use during/after teardown" race conditions. > It is subtle though. > Maybe subtle enough to make unconditional SRCU worth it. This all should > be in the changelog though. IMO, we've had enough recent bugs to deal with from shrinkers being called before the filesystem is set up and from trying to handle allocation errors during setup. Do we really want to make shrinker shutdown just as prone to mismanagement and subtle, hard to hit bugs? I don't think we do - unmount is simply not a critical performance path. Cheers, Dave.
On Wed, Aug 8, 2018 at 11:02 AM Josh Triplett <josh@joshtriplett.org> wrote: > > On Wed, Aug 08, 2018 at 07:30:13PM +0300, Kirill Tkhai wrote: > > On 08.08.2018 19:23, Kirill Tkhai wrote: > > > On 08.08.2018 19:13, Josh Triplett wrote: > > >> On Wed, Aug 08, 2018 at 01:17:44PM +0300, Kirill Tkhai wrote: > > >>> On 08.08.2018 10:20, Michal Hocko wrote: > > >>>> On Tue 07-08-18 18:37:36, Kirill Tkhai wrote: > > >>>>> This patch kills all CONFIG_SRCU defines and > > >>>>> the code under !CONFIG_SRCU. > > >>>> > > >>>> The last time somebody tried to do this there was a pushback due to > > >>>> kernel tinyfication. So this should really give some numbers about the > > >>>> code size increase. Also why can't we make this depend on MMU. Is > > >>>> anybody else than the reclaim asking for unconditional SRCU usage? > > >>> > > >>> I don't know one. The size numbers (sparc64) are: > > >>> > > >>> $ size image.srcu.disabled > > >>> text data bss dec hex filename > > >>> 5117546 8030506 1968104 15116156 e6a77c image.srcu.disabled > > >>> $ size image.srcu.enabled > > >>> text data bss dec hex filename > > >>> 5126175 8064346 1968104 15158625 e74d61 image.srcu.enabled > > >>> The difference is: 15158625-15116156 = 42469 ~41Kb > > >> > > >> 41k is a *substantial* size increase. However, can you compare > > >> tinyconfig with and without this patch? That may have a smaller change. > > > > > > $ size image.srcu.disabled > > > text data bss dec hex filename > > > 1105900 195456 63232 1364588 14d26c image.srcu.disabled > > > > > > $ size image.srcu.enabled > > > text data bss dec hex filename > > > 1106960 195528 63232 1365720 14d6d8 image.srcu.enabled > > > > > > 1365720-1364588 = 1132 ~ 1Kb > > > > 1Kb is not huge size. It looks as not a big price for writing generic code > > for only case (now some places have CONFIG_SRCU and !CONFIG_SRCU variants, > > e.g. drivers/base/core.c). What do you think? > > That's a little more reasonable than 41k, likely because of > CONFIG_TINY_SRCU. That's still not ideal, though. And as far as I can > tell, the *only* two pieces of core code that use SRCU are > drivers/base/core.c and kernel/notifier.c, and the latter is exclusively > code to use notifiers with SRCU, not notifiers wanting to use SRCU > themselves. So, as far as I can tell, this would really just save a > couple of small #ifdef sections in drivers/base/core.c, and I think > those #ifdef sections could be simplified even further. That doesn't > seem worth it at all. Hi Josh, the motivation behind enabling SRCU is not to simplify the code in drivers/base/core.c but rather not to introduce similar ifdefs in mm/vmscan.c for shrinker traversals. Shakeel
On Wed, Aug 08, 2018 at 04:02:29PM -0700, Shakeel Butt wrote: > On Wed, Aug 8, 2018 at 11:02 AM Josh Triplett <josh@joshtriplett.org> wrote: > > > > On Wed, Aug 08, 2018 at 07:30:13PM +0300, Kirill Tkhai wrote: > > > On 08.08.2018 19:23, Kirill Tkhai wrote: > > > > On 08.08.2018 19:13, Josh Triplett wrote: > > > >> On Wed, Aug 08, 2018 at 01:17:44PM +0300, Kirill Tkhai wrote: > > > >>> On 08.08.2018 10:20, Michal Hocko wrote: > > > >>>> On Tue 07-08-18 18:37:36, Kirill Tkhai wrote: > > > >>>>> This patch kills all CONFIG_SRCU defines and > > > >>>>> the code under !CONFIG_SRCU. > > > >>>> > > > >>>> The last time somebody tried to do this there was a pushback due to > > > >>>> kernel tinyfication. So this should really give some numbers about the > > > >>>> code size increase. Also why can't we make this depend on MMU. Is > > > >>>> anybody else than the reclaim asking for unconditional SRCU usage? > > > >>> > > > >>> I don't know one. The size numbers (sparc64) are: > > > >>> > > > >>> $ size image.srcu.disabled > > > >>> text data bss dec hex filename > > > >>> 5117546 8030506 1968104 15116156 e6a77c image.srcu.disabled > > > >>> $ size image.srcu.enabled > > > >>> text data bss dec hex filename > > > >>> 5126175 8064346 1968104 15158625 e74d61 image.srcu.enabled > > > >>> The difference is: 15158625-15116156 = 42469 ~41Kb > > > >> > > > >> 41k is a *substantial* size increase. However, can you compare > > > >> tinyconfig with and without this patch? That may have a smaller change. > > > > > > > > $ size image.srcu.disabled > > > > text data bss dec hex filename > > > > 1105900 195456 63232 1364588 14d26c image.srcu.disabled > > > > > > > > $ size image.srcu.enabled > > > > text data bss dec hex filename > > > > 1106960 195528 63232 1365720 14d6d8 image.srcu.enabled > > > > > > > > 1365720-1364588 = 1132 ~ 1Kb > > > > > > 1Kb is not huge size. It looks as not a big price for writing generic code > > > for only case (now some places have CONFIG_SRCU and !CONFIG_SRCU variants, > > > e.g. drivers/base/core.c). What do you think? > > > > That's a little more reasonable than 41k, likely because of > > CONFIG_TINY_SRCU. That's still not ideal, though. And as far as I can > > tell, the *only* two pieces of core code that use SRCU are > > drivers/base/core.c and kernel/notifier.c, and the latter is exclusively > > code to use notifiers with SRCU, not notifiers wanting to use SRCU > > themselves. So, as far as I can tell, this would really just save a > > couple of small #ifdef sections in drivers/base/core.c, and I think > > those #ifdef sections could be simplified even further. That doesn't > > seem worth it at all. > > Hi Josh, the motivation behind enabling SRCU is not to simplify the > code in drivers/base/core.c but rather not to introduce similar ifdefs > in mm/vmscan.c for shrinker traversals. Leaving aside the comment someone made about sticking with rwsem for this, I honestly hope that someday the shrinker is optional too. :)
On Thu, Aug 09, 2018 at 07:31:25AM +1000, Dave Chinner wrote: > IMO, we've had enough recent bugs to deal with from shrinkers being > called before the filesystem is set up and from trying to handle > allocation errors during setup. Do we really want to make shrinker > shutdown just as prone to mismanagement and subtle, hard to hit > bugs? I don't think we do - unmount is simply not a critical > performance path. It's never been performance critical for me, but I'm not so sure that there aren't container workloads which unmount filesystems multiple times per second.
On Wed, Aug 08, 2018 at 05:07:08PM -0700, Matthew Wilcox wrote: > On Thu, Aug 09, 2018 at 07:31:25AM +1000, Dave Chinner wrote: > > IMO, we've had enough recent bugs to deal with from shrinkers being > > called before the filesystem is set up and from trying to handle > > allocation errors during setup. Do we really want to make shrinker > > shutdown just as prone to mismanagement and subtle, hard to hit > > bugs? I don't think we do - unmount is simply not a critical > > performance path. > > It's never been performance critical for me, but I'm not so sure that > there aren't container workloads which unmount filesystems multiple > times per second. What? Why would they do that? Who cares about tear-down speeds? Start up speeds I can kind of understand...
On 09.08.2018 00:31, Dave Chinner wrote: > On Wed, Aug 08, 2018 at 12:27:34PM +0200, Michal Hocko wrote: >> [CC Josh - the whole series is >> http://lkml.kernel.org/r/153365347929.19074.12509495712735843805.stgit@localhost.localdomain] >> >> On Wed 08-08-18 13:17:44, Kirill Tkhai wrote: >>> On 08.08.2018 10:20, Michal Hocko wrote: >>>> On Tue 07-08-18 18:37:36, Kirill Tkhai wrote: >>>>> This patch kills all CONFIG_SRCU defines and >>>>> the code under !CONFIG_SRCU. >>>> >>>> The last time somebody tried to do this there was a pushback due to >>>> kernel tinyfication. So this should really give some numbers about the >>>> code size increase. Also why can't we make this depend on MMU. Is >>>> anybody else than the reclaim asking for unconditional SRCU usage? >>> >>> I don't know one. The size numbers (sparc64) are: >>> >>> $ size image.srcu.disabled >>> text data bss dec hex filename >>> 5117546 8030506 1968104 15116156 e6a77c image.srcu.disabled >>> $ size image.srcu.enabled >>> text data bss dec hex filename >>> 5126175 8064346 1968104 15158625 e74d61 image.srcu.enabled >>> The difference is: 15158625-15116156 = 42469 ~41Kb >>> >>> Please, see the measurement details to my answer to Stephen. >>> >>>> Btw. I totaly agree with Steven. This is a very poor changelog. It is >>>> trivial to see what the patch does but it is far from clear why it is >>>> doing that and why we cannot go other ways. >>> We possibly can go another way, and there is comment to [2/10] about this. >>> Percpu rwsem may be used instead, the only thing, it is worse, is it will >>> make shrink_slab() wait unregistering shrinkers, while srcu-based >>> implementation does not require this. >> >> Well, if unregisterring doesn't do anything subtle - e.g. an allocation >> or take locks which depend on allocation - and we can guarantee that >> then blocking shrink_slab shouldn't be a big deal. > > unregister_shrinker() already blocks shrink_slab - taking a rwsem in > write mode blocks all readers - so using a per-cpu rwsem doesn't > introduce anything new or unexpected. I'd like to see numbers of the > different methods before anything else. The difference is percpu_rw_semaphore makes readers to wait till RCU grace period is finished. Sometimes this takes unpredictable time on big machines with many CPUs, which is not good. > IMO, the big deal is that the split unregister mechanism seems to > imply superblock shrinkers can be called during sb teardown or > /after/ the filesystem has been torn down in memory (i.e. after > ->put_super() is called). That's a change of behaviour, but it's > left to the filesystem to detect and handle that condition. That's > exceedingly subtle and looks like a recipe for disaster to me. I > note that XFS hasn't been updated to detect and avoid this landmine. > > And, FWIW, filesystems with multiple shrinkers (e.g. XFS as 3 per > mount) will take the SCRU penalty multiple times during unmount, and > potentially be exposed to multiple different "use during/after > teardown" race conditions. > >> It is subtle though. >> Maybe subtle enough to make unconditional SRCU worth it. This all should >> be in the changelog though. > > IMO, we've had enough recent bugs to deal with from shrinkers being > called before the filesystem is set up and from trying to handle > allocation errors during setup. Do we really want to make shrinker > shutdown just as prone to mismanagement and subtle, hard to hit > bugs? I don't think we do - unmount is simply not a critical > performance path. There are possible different situations, people use linux like they want. Imagine, you want to reboot NFS server, but you want to enter clients and umount them over ssh, and the time is critical. Something like this. I believe there are many examples, people need this.
diff --git a/drivers/base/core.c b/drivers/base/core.c index 04bbcd779e11..8483da53c88f 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -44,7 +44,6 @@ early_param("sysfs.deprecated", sysfs_deprecated_setup); /* Device links support. */ -#ifdef CONFIG_SRCU static DEFINE_MUTEX(device_links_lock); DEFINE_STATIC_SRCU(device_links_srcu); @@ -67,30 +66,6 @@ void device_links_read_unlock(int idx) { srcu_read_unlock(&device_links_srcu, idx); } -#else /* !CONFIG_SRCU */ -static DECLARE_RWSEM(device_links_lock); - -static inline void device_links_write_lock(void) -{ - down_write(&device_links_lock); -} - -static inline void device_links_write_unlock(void) -{ - up_write(&device_links_lock); -} - -int device_links_read_lock(void) -{ - down_read(&device_links_lock); - return 0; -} - -void device_links_read_unlock(int not_used) -{ - up_read(&device_links_lock); -} -#endif /* !CONFIG_SRCU */ /** * device_is_dependent - Check if one device depends on another one @@ -317,7 +292,6 @@ static void device_link_free(struct device_link *link) kfree(link); } -#ifdef CONFIG_SRCU static void __device_link_free_srcu(struct rcu_head *rhead) { device_link_free(container_of(rhead, struct device_link, rcu_head)); @@ -337,22 +311,6 @@ static void __device_link_del(struct kref *kref) list_del_rcu(&link->c_node); call_srcu(&device_links_srcu, &link->rcu_head, __device_link_free_srcu); } -#else /* !CONFIG_SRCU */ -static void __device_link_del(struct kref *kref) -{ - struct device_link *link = container_of(kref, struct device_link, kref); - - dev_info(link->consumer, "Dropping the link to %s\n", - dev_name(link->supplier)); - - if (link->flags & DL_FLAG_PM_RUNTIME) - pm_runtime_drop_link(link->consumer); - - list_del(&link->s_node); - list_del(&link->c_node); - device_link_free(link); -} -#endif /* !CONFIG_SRCU */ /** * device_link_del - Delete a link between two devices. diff --git a/include/linux/device.h b/include/linux/device.h index 8f882549edee..524dc17d67be 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -827,9 +827,7 @@ struct device_link { u32 flags; bool rpm_active; struct kref kref; -#ifdef CONFIG_SRCU struct rcu_head rcu_head; -#endif }; /** diff --git a/include/linux/rcutiny.h b/include/linux/rcutiny.h index 8d9a0ea8f0b5..63e2b6f2e94a 100644 --- a/include/linux/rcutiny.h +++ b/include/linux/rcutiny.h @@ -115,11 +115,7 @@ static inline void rcu_irq_exit_irqson(void) { } static inline void rcu_irq_enter_irqson(void) { } static inline void rcu_irq_exit(void) { } static inline void exit_rcu(void) { } -#ifdef CONFIG_SRCU void rcu_scheduler_starting(void); -#else /* #ifndef CONFIG_SRCU */ -static inline void rcu_scheduler_starting(void) { } -#endif /* #else #ifndef CONFIG_SRCU */ static inline void rcu_end_inkernel_boot(void) { } static inline bool rcu_is_watching(void) { return true; } diff --git a/include/linux/srcu.h b/include/linux/srcu.h index 3e72a291c401..27238223a78e 100644 --- a/include/linux/srcu.h +++ b/include/linux/srcu.h @@ -60,11 +60,8 @@ int init_srcu_struct(struct srcu_struct *sp); #include <linux/srcutiny.h> #elif defined(CONFIG_TREE_SRCU) #include <linux/srcutree.h> -#elif defined(CONFIG_SRCU) -#error "Unknown SRCU implementation specified to kernel configuration" #else -/* Dummy definition for things like notifiers. Actual use gets link error. */ -struct srcu_struct { }; +#error "Unknown SRCU implementation specified to kernel configuration" #endif void call_srcu(struct srcu_struct *sp, struct rcu_head *head, diff --git a/kernel/notifier.c b/kernel/notifier.c index 6196af8a8223..6e4b55e74736 100644 --- a/kernel/notifier.c +++ b/kernel/notifier.c @@ -402,7 +402,6 @@ int raw_notifier_call_chain(struct raw_notifier_head *nh, } EXPORT_SYMBOL_GPL(raw_notifier_call_chain); -#ifdef CONFIG_SRCU /* * SRCU notifier chain routines. Registration and unregistration * use a mutex, and call_chain is synchronized by SRCU (no locks). @@ -529,8 +528,6 @@ void srcu_init_notifier_head(struct srcu_notifier_head *nh) } EXPORT_SYMBOL_GPL(srcu_init_notifier_head); -#endif /* CONFIG_SRCU */ - static ATOMIC_NOTIFIER_HEAD(die_chain); int notrace notify_die(enum die_val val, const char *str, diff --git a/kernel/rcu/Kconfig b/kernel/rcu/Kconfig index 9210379c0353..f52e55e33f0a 100644 --- a/kernel/rcu/Kconfig +++ b/kernel/rcu/Kconfig @@ -49,28 +49,20 @@ config RCU_EXPERT Say N if you are unsure. -config SRCU - bool - help - This option selects the sleepable version of RCU. This version - permits arbitrary sleeping or blocking within RCU read-side critical - sections. - config TINY_SRCU bool - default y if SRCU && TINY_RCU + default y if TINY_RCU help This option selects the single-CPU non-preemptible version of SRCU. config TREE_SRCU bool - default y if SRCU && !TINY_RCU + default y if !TINY_RCU help This option selects the full-fledged version of SRCU. config TASKS_RCU def_bool PREEMPT - select SRCU help This option enables a task-based RCU implementation that uses only voluntary context switch (not preemption!), idle, and diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h index 4e74df768c57..b7f76400a45e 100644 --- a/kernel/rcu/tree.h +++ b/kernel/rcu/tree.h @@ -489,12 +489,7 @@ static bool rcu_nohz_full_cpu(struct rcu_state *rsp); static void rcu_dynticks_task_enter(void); static void rcu_dynticks_task_exit(void); -#ifdef CONFIG_SRCU void srcu_online_cpu(unsigned int cpu); void srcu_offline_cpu(unsigned int cpu); -#else /* #ifdef CONFIG_SRCU */ -void srcu_online_cpu(unsigned int cpu) { } -void srcu_offline_cpu(unsigned int cpu) { } -#endif /* #else #ifdef CONFIG_SRCU */ #endif /* #ifndef RCU_TREE_NONCORE */ diff --git a/kernel/rcu/update.c b/kernel/rcu/update.c index 39cb23d22109..90de81c98524 100644 --- a/kernel/rcu/update.c +++ b/kernel/rcu/update.c @@ -210,8 +210,6 @@ void rcu_test_sync_prims(void) synchronize_sched_expedited(); } -#if !defined(CONFIG_TINY_RCU) || defined(CONFIG_SRCU) - /* * Switch to run-time mode once RCU has fully initialized. */ @@ -224,8 +222,6 @@ static int __init rcu_set_runtime_mode(void) } core_initcall(rcu_set_runtime_mode); -#endif /* #if !defined(CONFIG_TINY_RCU) || defined(CONFIG_SRCU) */ - #ifdef CONFIG_DEBUG_LOCK_ALLOC static struct lock_class_key rcu_lock_key; struct lockdep_map rcu_lock_map = diff --git a/tools/testing/selftests/rcutorture/doc/TREE_RCU-kconfig.txt b/tools/testing/selftests/rcutorture/doc/TREE_RCU-kconfig.txt index af6fca03602f..b4f015c3244a 100644 --- a/tools/testing/selftests/rcutorture/doc/TREE_RCU-kconfig.txt +++ b/tools/testing/selftests/rcutorture/doc/TREE_RCU-kconfig.txt @@ -73,9 +73,4 @@ CONFIG_TASKS_RCU These are controlled by CONFIG_PREEMPT and/or CONFIG_SMP. -CONFIG_SRCU - - Selected by CONFIG_RCU_TORTURE_TEST, so cannot disable. - - boot parameters ignored: TBD
This patch kills all CONFIG_SRCU defines and the code under !CONFIG_SRCU. Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com> --- drivers/base/core.c | 42 -------------------- include/linux/device.h | 2 - include/linux/rcutiny.h | 4 -- include/linux/srcu.h | 5 -- kernel/notifier.c | 3 - kernel/rcu/Kconfig | 12 +----- kernel/rcu/tree.h | 5 -- kernel/rcu/update.c | 4 -- .../selftests/rcutorture/doc/TREE_RCU-kconfig.txt | 5 -- 9 files changed, 3 insertions(+), 79 deletions(-)