| Message ID | 1674091345-14799-1-git-send-email-zhaoyang.huang@unisoc.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [PATCHv4,1/2] mm: move KMEMLEAK's Kconfig items from lib to mm | expand |
On Thu, Jan 19, 2023 at 09:22:24AM +0800, zhaoyang.huang wrote: > From: Zhaoyang Huang <zhaoyang.huang@unisoc.com> > > Have the kmemleak's source code and Kconfig items be in the same directory. > > Signed-off-by: Zhaoyang Huang <zhaoyang.huang@unisoc.com> Acked-by: Mike Rapoport (IBM) <rppt@kernel.org> > --- > lib/Kconfig.debug | 70 ------------------------------------------------------- > mm/Kconfig.debug | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ > 2 files changed, 70 insertions(+), 70 deletions(-) > > diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug > index 401ad4b..62884ac 100644 > --- a/lib/Kconfig.debug > +++ b/lib/Kconfig.debug > @@ -716,76 +716,6 @@ config SHRINKER_DEBUG > visibility into the kernel memory shrinkers subsystem. > Disable it to avoid an extra memory footprint. > > -config HAVE_DEBUG_KMEMLEAK > - bool > - > -config DEBUG_KMEMLEAK > - bool "Kernel memory leak detector" > - depends on DEBUG_KERNEL && HAVE_DEBUG_KMEMLEAK > - select DEBUG_FS > - select STACKTRACE if STACKTRACE_SUPPORT > - select KALLSYMS > - select CRC32 > - select STACKDEPOT > - help > - Say Y here if you want to enable the memory leak > - detector. The memory allocation/freeing is traced in a way > - similar to the Boehm's conservative garbage collector, the > - difference being that the orphan objects are not freed but > - only shown in /sys/kernel/debug/kmemleak. Enabling this > - feature will introduce an overhead to memory > - allocations. See Documentation/dev-tools/kmemleak.rst for more > - details. > - > - Enabling DEBUG_SLAB or SLUB_DEBUG may increase the chances > - of finding leaks due to the slab objects poisoning. > - > - In order to access the kmemleak file, debugfs needs to be > - mounted (usually at /sys/kernel/debug). > - > -config DEBUG_KMEMLEAK_MEM_POOL_SIZE > - int "Kmemleak memory pool size" > - depends on DEBUG_KMEMLEAK > - range 200 1000000 > - default 16000 > - help > - Kmemleak must track all the memory allocations to avoid > - reporting false positives. Since memory may be allocated or > - freed before kmemleak is fully initialised, use a static pool > - of metadata objects to track such callbacks. After kmemleak is > - fully initialised, this memory pool acts as an emergency one > - if slab allocations fail. > - > -config DEBUG_KMEMLEAK_TEST > - tristate "Simple test for the kernel memory leak detector" > - depends on DEBUG_KMEMLEAK && m > - help > - This option enables a module that explicitly leaks memory. > - > - If unsure, say N. > - > -config DEBUG_KMEMLEAK_DEFAULT_OFF > - bool "Default kmemleak to off" > - depends on DEBUG_KMEMLEAK > - help > - Say Y here to disable kmemleak by default. It can then be enabled > - on the command line via kmemleak=on. > - > -config DEBUG_KMEMLEAK_AUTO_SCAN > - bool "Enable kmemleak auto scan thread on boot up" > - default y > - depends on DEBUG_KMEMLEAK > - help > - Depending on the cpu, kmemleak scan may be cpu intensive and can > - stall user tasks at times. This option enables/disables automatic > - kmemleak scan at boot up. > - > - Say N here to disable kmemleak auto scan thread to stop automatic > - scanning. Disabling this option disables automatic reporting of > - memory leaks. > - > - If unsure, say Y. > - > config DEBUG_STACK_USAGE > bool "Stack utilization instrumentation" > depends on DEBUG_KERNEL && !IA64 > diff --git a/mm/Kconfig.debug b/mm/Kconfig.debug > index ce8dded..d1893ac 100644 > --- a/mm/Kconfig.debug > +++ b/mm/Kconfig.debug > @@ -207,3 +207,73 @@ config PTDUMP_DEBUGFS > kernel. > > If in doubt, say N. > + > +config HAVE_DEBUG_KMEMLEAK > + bool > + > +config DEBUG_KMEMLEAK > + bool "Kernel memory leak detector" > + depends on DEBUG_KERNEL && HAVE_DEBUG_KMEMLEAK > + select DEBUG_FS > + select STACKTRACE if STACKTRACE_SUPPORT > + select KALLSYMS > + select CRC32 > + select STACKDEPOT > + help > + Say Y here if you want to enable the memory leak > + detector. The memory allocation/freeing is traced in a way > + similar to the Boehm's conservative garbage collector, the > + difference being that the orphan objects are not freed but > + only shown in /sys/kernel/debug/kmemleak. Enabling this > + feature will introduce an overhead to memory > + allocations. See Documentation/dev-tools/kmemleak.rst for more > + details. > + > + Enabling DEBUG_SLAB or SLUB_DEBUG may increase the chances > + of finding leaks due to the slab objects poisoning. > + > + In order to access the kmemleak file, debugfs needs to be > + mounted (usually at /sys/kernel/debug). > + > +config DEBUG_KMEMLEAK_MEM_POOL_SIZE > + int "Kmemleak memory pool size" > + depends on DEBUG_KMEMLEAK > + range 200 1000000 > + default 16000 > + help > + Kmemleak must track all the memory allocations to avoid > + reporting false positives. Since memory may be allocated or > + freed before kmemleak is fully initialised, use a static pool > + of metadata objects to track such callbacks. After kmemleak is > + fully initialised, this memory pool acts as an emergency one > + if slab allocations fail. > + > +config DEBUG_KMEMLEAK_TEST > + tristate "Simple test for the kernel memory leak detector" > + depends on DEBUG_KMEMLEAK && m > + help > + This option enables a module that explicitly leaks memory. > + > + If unsure, say N. > + > +config DEBUG_KMEMLEAK_DEFAULT_OFF > + bool "Default kmemleak to off" > + depends on DEBUG_KMEMLEAK > + help > + Say Y here to disable kmemleak by default. It can then be enabled > + on the command line via kmemleak=on. > + > +config DEBUG_KMEMLEAK_AUTO_SCAN > + bool "Enable kmemleak auto scan thread on boot up" > + default y > + depends on DEBUG_KMEMLEAK > + help > + Depending on the cpu, kmemleak scan may be cpu intensive and can > + stall user tasks at times. This option enables/disables automatic > + kmemleak scan at boot up. > + > + Say N here to disable kmemleak auto scan thread to stop automatic > + scanning. Disabling this option disables automatic reporting of > + memory leaks. > + > + If unsure, say Y. > -- > 1.9.1 > >
On 1/19/23 02:22, zhaoyang.huang wrote: > From: Zhaoyang Huang <zhaoyang.huang@unisoc.com> > > Have the kmemleak's source code and Kconfig items be in the same directory. > > Signed-off-by: Zhaoyang Huang <zhaoyang.huang@unisoc.com> Acked-by: Vlastimil Babka <vbabka@suse.cz>
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 401ad4b..62884ac 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -716,76 +716,6 @@ config SHRINKER_DEBUG visibility into the kernel memory shrinkers subsystem. Disable it to avoid an extra memory footprint. -config HAVE_DEBUG_KMEMLEAK - bool - -config DEBUG_KMEMLEAK - bool "Kernel memory leak detector" - depends on DEBUG_KERNEL && HAVE_DEBUG_KMEMLEAK - select DEBUG_FS - select STACKTRACE if STACKTRACE_SUPPORT - select KALLSYMS - select CRC32 - select STACKDEPOT - help - Say Y here if you want to enable the memory leak - detector. The memory allocation/freeing is traced in a way - similar to the Boehm's conservative garbage collector, the - difference being that the orphan objects are not freed but - only shown in /sys/kernel/debug/kmemleak. Enabling this - feature will introduce an overhead to memory - allocations. See Documentation/dev-tools/kmemleak.rst for more - details. - - Enabling DEBUG_SLAB or SLUB_DEBUG may increase the chances - of finding leaks due to the slab objects poisoning. - - In order to access the kmemleak file, debugfs needs to be - mounted (usually at /sys/kernel/debug). - -config DEBUG_KMEMLEAK_MEM_POOL_SIZE - int "Kmemleak memory pool size" - depends on DEBUG_KMEMLEAK - range 200 1000000 - default 16000 - help - Kmemleak must track all the memory allocations to avoid - reporting false positives. Since memory may be allocated or - freed before kmemleak is fully initialised, use a static pool - of metadata objects to track such callbacks. After kmemleak is - fully initialised, this memory pool acts as an emergency one - if slab allocations fail. - -config DEBUG_KMEMLEAK_TEST - tristate "Simple test for the kernel memory leak detector" - depends on DEBUG_KMEMLEAK && m - help - This option enables a module that explicitly leaks memory. - - If unsure, say N. - -config DEBUG_KMEMLEAK_DEFAULT_OFF - bool "Default kmemleak to off" - depends on DEBUG_KMEMLEAK - help - Say Y here to disable kmemleak by default. It can then be enabled - on the command line via kmemleak=on. - -config DEBUG_KMEMLEAK_AUTO_SCAN - bool "Enable kmemleak auto scan thread on boot up" - default y - depends on DEBUG_KMEMLEAK - help - Depending on the cpu, kmemleak scan may be cpu intensive and can - stall user tasks at times. This option enables/disables automatic - kmemleak scan at boot up. - - Say N here to disable kmemleak auto scan thread to stop automatic - scanning. Disabling this option disables automatic reporting of - memory leaks. - - If unsure, say Y. - config DEBUG_STACK_USAGE bool "Stack utilization instrumentation" depends on DEBUG_KERNEL && !IA64 diff --git a/mm/Kconfig.debug b/mm/Kconfig.debug index ce8dded..d1893ac 100644 --- a/mm/Kconfig.debug +++ b/mm/Kconfig.debug @@ -207,3 +207,73 @@ config PTDUMP_DEBUGFS kernel. If in doubt, say N. + +config HAVE_DEBUG_KMEMLEAK + bool + +config DEBUG_KMEMLEAK + bool "Kernel memory leak detector" + depends on DEBUG_KERNEL && HAVE_DEBUG_KMEMLEAK + select DEBUG_FS + select STACKTRACE if STACKTRACE_SUPPORT + select KALLSYMS + select CRC32 + select STACKDEPOT + help + Say Y here if you want to enable the memory leak + detector. The memory allocation/freeing is traced in a way + similar to the Boehm's conservative garbage collector, the + difference being that the orphan objects are not freed but + only shown in /sys/kernel/debug/kmemleak. Enabling this + feature will introduce an overhead to memory + allocations. See Documentation/dev-tools/kmemleak.rst for more + details. + + Enabling DEBUG_SLAB or SLUB_DEBUG may increase the chances + of finding leaks due to the slab objects poisoning. + + In order to access the kmemleak file, debugfs needs to be + mounted (usually at /sys/kernel/debug). + +config DEBUG_KMEMLEAK_MEM_POOL_SIZE + int "Kmemleak memory pool size" + depends on DEBUG_KMEMLEAK + range 200 1000000 + default 16000 + help + Kmemleak must track all the memory allocations to avoid + reporting false positives. Since memory may be allocated or + freed before kmemleak is fully initialised, use a static pool + of metadata objects to track such callbacks. After kmemleak is + fully initialised, this memory pool acts as an emergency one + if slab allocations fail. + +config DEBUG_KMEMLEAK_TEST + tristate "Simple test for the kernel memory leak detector" + depends on DEBUG_KMEMLEAK && m + help + This option enables a module that explicitly leaks memory. + + If unsure, say N. + +config DEBUG_KMEMLEAK_DEFAULT_OFF + bool "Default kmemleak to off" + depends on DEBUG_KMEMLEAK + help + Say Y here to disable kmemleak by default. It can then be enabled + on the command line via kmemleak=on. + +config DEBUG_KMEMLEAK_AUTO_SCAN + bool "Enable kmemleak auto scan thread on boot up" + default y + depends on DEBUG_KMEMLEAK + help + Depending on the cpu, kmemleak scan may be cpu intensive and can + stall user tasks at times. This option enables/disables automatic + kmemleak scan at boot up. + + Say N here to disable kmemleak auto scan thread to stop automatic + scanning. Disabling this option disables automatic reporting of + memory leaks. + + If unsure, say Y.