From patchwork Tue Sep 3 16:06:25 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Andreas_F=C3=A4rber?= X-Patchwork-Id: 2853282 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 849BC9F3DC for ; Tue, 3 Sep 2013 16:06:49 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5C94C2041A for ; Tue, 3 Sep 2013 16:06:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CE43C203E1 for ; Tue, 3 Sep 2013 16:06:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756456Ab3ICQGl (ORCPT ); Tue, 3 Sep 2013 12:06:41 -0400 Received: from cantor2.suse.de ([195.135.220.15]:43547 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755882Ab3ICQGj (ORCPT ); Tue, 3 Sep 2013 12:06:39 -0400 Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 6E919A5359; Tue, 3 Sep 2013 18:06:36 +0200 (CEST) From: =?UTF-8?q?Andreas=20F=C3=A4rber?= To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Andreas=20F=C3=A4rber?= , Paul Brook , Peter Maydell , Anthony Liguori , Alexander Graf , Scott Wood , Gleb Natapov , Paolo Bonzini , Riku Voipio , Luiz Capitulino , Aurelien Jarno , Richard Henderson , qemu-ppc@nongnu.org (open list:e500), kvm@vger.kernel.org (open list:Overall) Subject: [PULL 2/4] cpu: Use QTAILQ for CPU list Date: Tue, 3 Sep 2013 18:06:25 +0200 Message-Id: <1378224387-18760-3-git-send-email-afaerber@suse.de> X-Mailer: git-send-email 1.8.1.4 In-Reply-To: <1378224387-18760-1-git-send-email-afaerber@suse.de> References: <1378224387-18760-1-git-send-email-afaerber@suse.de> MIME-Version: 1.0 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Spam-Status: No, score=-9.3 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Introduce CPU_FOREACH(), CPU_FOREACH_SAFE() and CPU_NEXT() shorthand macros. Signed-off-by: Andreas Färber --- cpus.c | 49 ++++++++++++++++++++-------------------------- cputlb.c | 2 +- dump.c | 10 +++++----- exec.c | 26 ++++++++++-------------- gdbstub.c | 14 ++++++------- hw/arm/boot.c | 2 +- hw/i386/kvm/clock.c | 2 +- hw/i386/kvmvapic.c | 2 +- hw/i386/pc.c | 3 +-- hw/ppc/e500.c | 2 +- hw/ppc/ppc.c | 2 +- hw/ppc/spapr.c | 4 ++-- hw/ppc/spapr_hcall.c | 4 ++-- include/qom/cpu.h | 11 +++++++++-- kvm-all.c | 8 ++++---- linux-user/elfload.c | 2 +- linux-user/main.c | 10 +++++++--- linux-user/syscall.c | 17 ++-------------- memory_mapping.c | 5 +++-- monitor.c | 2 +- target-i386/helper.c | 3 +-- target-i386/misc_helper.c | 2 +- target-mips/op_helper.c | 10 ++++------ target-ppc/excp_helper.c | 2 +- target-s390x/misc_helper.c | 8 ++++---- translate-all.c | 4 ++-- 26 files changed, 94 insertions(+), 112 deletions(-) diff --git a/cpus.c b/cpus.c index d74cc11..363d392 100644 --- a/cpus.c +++ b/cpus.c @@ -86,7 +86,7 @@ static bool all_cpu_threads_idle(void) { CPUState *cpu; - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { if (!cpu_thread_is_idle(cpu)) { return false; } @@ -416,7 +416,7 @@ void hw_error(const char *fmt, ...) fprintf(stderr, "qemu: hardware error: "); vfprintf(stderr, fmt, ap); fprintf(stderr, "\n"); - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { fprintf(stderr, "CPU #%d:\n", cpu->cpu_index); cpu_dump_state(cpu, stderr, fprintf, CPU_DUMP_FPU); } @@ -428,7 +428,7 @@ void cpu_synchronize_all_states(void) { CPUState *cpu; - for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { cpu_synchronize_state(cpu); } } @@ -437,7 +437,7 @@ void cpu_synchronize_all_post_reset(void) { CPUState *cpu; - for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { cpu_synchronize_post_reset(cpu); } } @@ -446,7 +446,7 @@ void cpu_synchronize_all_post_init(void) { CPUState *cpu; - for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { cpu_synchronize_post_init(cpu); } } @@ -760,7 +760,7 @@ static void qemu_tcg_wait_io_event(void) qemu_cond_wait(&qemu_io_proceeded_cond, &qemu_global_mutex); } - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { qemu_wait_io_event_common(cpu); } } @@ -872,11 +872,11 @@ static void *qemu_tcg_cpu_thread_fn(void *arg) qemu_cond_signal(&qemu_cpu_cond); /* wait for initial kick-off after machine start */ - while (first_cpu->stopped) { + while (QTAILQ_FIRST(&cpus)->stopped) { qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex); /* process any pending work */ - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { qemu_wait_io_event_common(cpu); } } @@ -991,13 +991,12 @@ void qemu_mutex_unlock_iothread(void) static int all_vcpus_paused(void) { - CPUState *cpu = first_cpu; + CPUState *cpu; - while (cpu) { + CPU_FOREACH(cpu) { if (!cpu->stopped) { return 0; } - cpu = cpu->next_cpu; } return 1; @@ -1005,23 +1004,20 @@ static int all_vcpus_paused(void) void pause_all_vcpus(void) { - CPUState *cpu = first_cpu; + CPUState *cpu; qemu_clock_enable(QEMU_CLOCK_VIRTUAL, false); - while (cpu) { + CPU_FOREACH(cpu) { cpu->stop = true; qemu_cpu_kick(cpu); - cpu = cpu->next_cpu; } if (qemu_in_vcpu_thread()) { cpu_stop_current(); if (!kvm_enabled()) { - cpu = first_cpu; - while (cpu) { + CPU_FOREACH(cpu) { cpu->stop = false; cpu->stopped = true; - cpu = cpu->next_cpu; } return; } @@ -1029,10 +1025,8 @@ void pause_all_vcpus(void) while (!all_vcpus_paused()) { qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex); - cpu = first_cpu; - while (cpu) { + CPU_FOREACH(cpu) { qemu_cpu_kick(cpu); - cpu = cpu->next_cpu; } } } @@ -1046,12 +1040,11 @@ void cpu_resume(CPUState *cpu) void resume_all_vcpus(void) { - CPUState *cpu = first_cpu; + CPUState *cpu; qemu_clock_enable(QEMU_CLOCK_VIRTUAL, true); - while (cpu) { + CPU_FOREACH(cpu) { cpu_resume(cpu); - cpu = cpu->next_cpu; } } @@ -1215,7 +1208,7 @@ static void tcg_exec_all(void) if (next_cpu == NULL) { next_cpu = first_cpu; } - for (; next_cpu != NULL && !exit_request; next_cpu = next_cpu->next_cpu) { + for (; next_cpu != NULL && !exit_request; next_cpu = CPU_NEXT(next_cpu)) { CPUState *cpu = next_cpu; CPUArchState *env = cpu->env_ptr; @@ -1240,7 +1233,7 @@ void set_numa_modes(void) CPUState *cpu; int i; - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { for (i = 0; i < nb_numa_nodes; i++) { if (test_bit(cpu->cpu_index, node_cpumask[i])) { cpu->numa_node = i; @@ -1262,7 +1255,7 @@ CpuInfoList *qmp_query_cpus(Error **errp) CpuInfoList *head = NULL, *cur_item = NULL; CPUState *cpu; - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { CpuInfoList *info; #if defined(TARGET_I386) X86CPU *x86_cpu = X86_CPU(cpu); @@ -1391,7 +1384,7 @@ void qmp_inject_nmi(Error **errp) #if defined(TARGET_I386) CPUState *cs; - for (cs = first_cpu; cs != NULL; cs = cs->next_cpu) { + CPU_FOREACH(cs) { X86CPU *cpu = X86_CPU(cs); CPUX86State *env = &cpu->env; @@ -1405,7 +1398,7 @@ void qmp_inject_nmi(Error **errp) CPUState *cs; S390CPU *cpu; - for (cs = first_cpu; cs != NULL; cs = cs->next_cpu) { + CPU_FOREACH(cs) { cpu = S390_CPU(cs); if (cpu->env.cpu_num == monitor_get_cpu_index()) { if (s390_cpu_restart(S390_CPU(cs)) == -1) { diff --git a/cputlb.c b/cputlb.c index 977c0ca..19ecf60 100644 --- a/cputlb.c +++ b/cputlb.c @@ -189,7 +189,7 @@ void cpu_tlb_reset_dirty_all(ram_addr_t start1, ram_addr_t length) CPUState *cpu; CPUArchState *env; - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { int mmu_idx; env = cpu->env_ptr; diff --git a/dump.c b/dump.c index c0dae2c..846155c 100644 --- a/dump.c +++ b/dump.c @@ -277,7 +277,7 @@ static int write_elf64_notes(DumpState *s) int ret; int id; - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { id = cpu_index(cpu); ret = cpu_write_elf64_note(fd_write_vmcore, cpu, id, s); if (ret < 0) { @@ -286,7 +286,7 @@ static int write_elf64_notes(DumpState *s) } } - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { ret = cpu_write_elf64_qemunote(fd_write_vmcore, cpu, s); if (ret < 0) { dump_error(s, "dump: failed to write CPU status.\n"); @@ -327,7 +327,7 @@ static int write_elf32_notes(DumpState *s) int ret; int id; - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { id = cpu_index(cpu); ret = cpu_write_elf32_note(fd_write_vmcore, cpu, id, s); if (ret < 0) { @@ -336,7 +336,7 @@ static int write_elf32_notes(DumpState *s) } } - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { ret = cpu_write_elf32_qemunote(fd_write_vmcore, cpu, s); if (ret < 0) { dump_error(s, "dump: failed to write CPU status.\n"); @@ -734,7 +734,7 @@ static int dump_init(DumpState *s, int fd, bool paging, bool has_filter, */ cpu_synchronize_all_states(); nr_cpus = 0; - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { nr_cpus++; } diff --git a/exec.c b/exec.c index 3ca9381..ca2a504 100644 --- a/exec.c +++ b/exec.c @@ -69,7 +69,7 @@ static MemoryRegion io_mem_unassigned; #endif -CPUState *first_cpu; +struct CPUTailQ cpus = QTAILQ_HEAD_INITIALIZER(cpus); /* current CPU in the current thread. It is only valid inside cpu_exec() */ DEFINE_TLS(CPUState *, current_cpu); @@ -351,26 +351,23 @@ const VMStateDescription vmstate_cpu_common = { CPUState *qemu_get_cpu(int index) { - CPUState *cpu = first_cpu; + CPUState *cpu; - while (cpu) { + CPU_FOREACH(cpu) { if (cpu->cpu_index == index) { - break; + return cpu; } - cpu = cpu->next_cpu; } - return cpu; + return NULL; } void qemu_for_each_cpu(void (*func)(CPUState *cpu, void *data), void *data) { CPUState *cpu; - cpu = first_cpu; - while (cpu) { + CPU_FOREACH(cpu) { func(cpu, data); - cpu = cpu->next_cpu; } } @@ -378,17 +375,14 @@ void cpu_exec_init(CPUArchState *env) { CPUState *cpu = ENV_GET_CPU(env); CPUClass *cc = CPU_GET_CLASS(cpu); - CPUState **pcpu; + CPUState *some_cpu; int cpu_index; #if defined(CONFIG_USER_ONLY) cpu_list_lock(); #endif - cpu->next_cpu = NULL; - pcpu = &first_cpu; cpu_index = 0; - while (*pcpu != NULL) { - pcpu = &(*pcpu)->next_cpu; + CPU_FOREACH(some_cpu) { cpu_index++; } cpu->cpu_index = cpu_index; @@ -398,7 +392,7 @@ void cpu_exec_init(CPUArchState *env) #ifndef CONFIG_USER_ONLY cpu->thread_id = qemu_get_thread_id(); #endif - *pcpu = cpu; + QTAILQ_INSERT_TAIL(&cpus, cpu, node); #if defined(CONFIG_USER_ONLY) cpu_list_unlock(); #endif @@ -1762,7 +1756,7 @@ static void tcg_commit(MemoryListener *listener) /* since each CPU stores ram addresses in its TLB cache, we must reset the modified entries */ /* XXX: slow ! */ - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { CPUArchState *env = cpu->env_ptr; tlb_flush(env, 1); diff --git a/gdbstub.c b/gdbstub.c index 9d067d6..2b7f22b 100644 --- a/gdbstub.c +++ b/gdbstub.c @@ -648,7 +648,7 @@ static int gdb_breakpoint_insert(target_ulong addr, target_ulong len, int type) switch (type) { case GDB_BREAKPOINT_SW: case GDB_BREAKPOINT_HW: - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { env = cpu->env_ptr; err = cpu_breakpoint_insert(env, addr, BP_GDB, NULL); if (err) @@ -659,7 +659,7 @@ static int gdb_breakpoint_insert(target_ulong addr, target_ulong len, int type) case GDB_WATCHPOINT_WRITE: case GDB_WATCHPOINT_READ: case GDB_WATCHPOINT_ACCESS: - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { env = cpu->env_ptr; err = cpu_watchpoint_insert(env, addr, len, xlat_gdb_type[type], NULL); @@ -686,7 +686,7 @@ static int gdb_breakpoint_remove(target_ulong addr, target_ulong len, int type) switch (type) { case GDB_BREAKPOINT_SW: case GDB_BREAKPOINT_HW: - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { env = cpu->env_ptr; err = cpu_breakpoint_remove(env, addr, BP_GDB); if (err) @@ -697,7 +697,7 @@ static int gdb_breakpoint_remove(target_ulong addr, target_ulong len, int type) case GDB_WATCHPOINT_WRITE: case GDB_WATCHPOINT_READ: case GDB_WATCHPOINT_ACCESS: - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { env = cpu->env_ptr; err = cpu_watchpoint_remove(env, addr, len, xlat_gdb_type[type]); if (err) @@ -720,7 +720,7 @@ static void gdb_breakpoint_remove_all(void) return; } - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { env = cpu->env_ptr; cpu_breakpoint_remove_all(env, BP_GDB); #ifndef CONFIG_USER_ONLY @@ -744,7 +744,7 @@ static CPUState *find_cpu(uint32_t thread_id) { CPUState *cpu; - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { if (cpu_index(cpu) == thread_id) { return cpu; } @@ -1070,7 +1070,7 @@ static int gdb_handle_packet(GDBState *s, const char *line_buf) if (s->query_cpu) { snprintf(buf, sizeof(buf), "m%x", cpu_index(s->query_cpu)); put_packet(s, buf); - s->query_cpu = s->query_cpu->next_cpu; + s->query_cpu = CPU_NEXT(s->query_cpu); } else put_packet(s, "l"); break; diff --git a/hw/arm/boot.c b/hw/arm/boot.c index 2cbeefd..1e313af 100644 --- a/hw/arm/boot.c +++ b/hw/arm/boot.c @@ -468,7 +468,7 @@ void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info) } info->is_linux = is_linux; - for (; cs; cs = cs->next_cpu) { + for (; cs; cs = CPU_NEXT(cs)) { cpu = ARM_CPU(cs); cpu->env.boot_info = info; qemu_register_reset(do_cpu_reset, cpu); diff --git a/hw/i386/kvm/clock.c b/hw/i386/kvm/clock.c index e89e2f7..92aabb8 100644 --- a/hw/i386/kvm/clock.c +++ b/hw/i386/kvm/clock.c @@ -59,7 +59,7 @@ static void kvmclock_vm_state_change(void *opaque, int running, if (!cap_clock_ctrl) { return; } - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { ret = kvm_vcpu_ioctl(cpu, KVM_KVMCLOCK_CTRL, 0); if (ret) { if (ret != -EINVAL) { diff --git a/hw/i386/kvmvapic.c b/hw/i386/kvmvapic.c index 15beb80..d3a6fbe 100644 --- a/hw/i386/kvmvapic.c +++ b/hw/i386/kvmvapic.c @@ -498,7 +498,7 @@ static void vapic_enable_tpr_reporting(bool enable) X86CPU *cpu; CPUX86State *env; - for (cs = first_cpu; cs != NULL; cs = cs->next_cpu) { + CPU_FOREACH(cs) { cpu = X86_CPU(cs); env = &cpu->env; info.apic = env->apic_state; diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 3a620a1..0c313fe 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -191,13 +191,12 @@ static void pic_irq_request(void *opaque, int irq, int level) DPRINTF("pic_irqs: %s irq %d\n", level? "raise" : "lower", irq); if (env->apic_state) { - while (cs) { + CPU_FOREACH(cs) { cpu = X86_CPU(cs); env = &cpu->env; if (apic_accept_pic_intr(env->apic_state)) { apic_deliver_pic_intr(env->apic_state, level); } - cs = cs->next_cpu; } } else { if (level) { diff --git a/hw/ppc/e500.c b/hw/ppc/e500.c index 9059ff9..cfdd84b 100644 --- a/hw/ppc/e500.c +++ b/hw/ppc/e500.c @@ -540,7 +540,7 @@ static DeviceState *ppce500_init_mpic_kvm(PPCE500Params *params, return NULL; } - for (cs = first_cpu; cs != NULL; cs = cs->next_cpu) { + CPU_FOREACH(cs) { if (kvm_openpic_connect_vcpu(dev, cs)) { fprintf(stderr, "%s: failed to connect vcpu to irqchip\n", __func__); diff --git a/hw/ppc/ppc.c b/hw/ppc/ppc.c index 59b41cb..bf2d3d4 100644 --- a/hw/ppc/ppc.c +++ b/hw/ppc/ppc.c @@ -443,7 +443,7 @@ void ppce500_set_mpic_proxy(bool enabled) { CPUState *cs; - for (cs = first_cpu; cs != NULL; cs = cs->next_cpu) { + CPU_FOREACH(cs) { PowerPCCPU *cpu = POWERPC_CPU(cs); cpu->env.mpic_proxy = enabled; diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 04f0ee3..8c6e296 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -187,7 +187,7 @@ static int spapr_fixup_cpu_dt(void *fdt, sPAPREnvironment *spapr) assert(spapr->cpu_model); - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { uint32_t associativity[] = {cpu_to_be32(0x5), cpu_to_be32(0x0), cpu_to_be32(0x0), @@ -351,7 +351,7 @@ static void *spapr_create_fdt_skel(const char *cpu_model, /* This is needed during FDT finalization */ spapr->cpu_model = g_strdup(modelname); - for (cs = first_cpu; cs != NULL; cs = cs->next_cpu) { + CPU_FOREACH(cs) { PowerPCCPU *cpu = POWERPC_CPU(cs); CPUPPCState *env = &cpu->env; PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs); diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c index 89e6a00..f10ba8a 100644 --- a/hw/ppc/spapr_hcall.c +++ b/hw/ppc/spapr_hcall.c @@ -679,7 +679,7 @@ static target_ulong h_set_mode(PowerPCCPU *cpu, sPAPREnvironment *spapr, switch (mflags) { case H_SET_MODE_ENDIAN_BIG: - for (cs = first_cpu; cs != NULL; cs = cs->next_cpu) { + CPU_FOREACH(cs) { PowerPCCPU *cp = POWERPC_CPU(cs); CPUPPCState *env = &cp->env; env->spr[SPR_LPCR] &= ~LPCR_ILE; @@ -688,7 +688,7 @@ static target_ulong h_set_mode(PowerPCCPU *cpu, sPAPREnvironment *spapr, break; case H_SET_MODE_ENDIAN_LITTLE: - for (cs = first_cpu; cs != NULL; cs = cs->next_cpu) { + CPU_FOREACH(cs) { PowerPCCPU *cp = POWERPC_CPU(cs); CPUPPCState *env = &cp->env; env->spr[SPR_LPCR] |= LPCR_ILE; diff --git a/include/qom/cpu.h b/include/qom/cpu.h index 3e49936..79f7c87 100644 --- a/include/qom/cpu.h +++ b/include/qom/cpu.h @@ -23,6 +23,7 @@ #include #include "hw/qdev-core.h" #include "exec/hwaddr.h" +#include "qemu/queue.h" #include "qemu/thread.h" #include "qemu/tls.h" #include "qemu/typedefs.h" @@ -190,7 +191,7 @@ struct CPUState { struct GDBRegisterState *gdb_regs; int gdb_num_regs; int gdb_num_g_regs; - CPUState *next_cpu; + QTAILQ_ENTRY(CPUState) node; int kvm_fd; bool kvm_vcpu_dirty; @@ -202,7 +203,13 @@ struct CPUState { uint32_t halted; /* used by alpha, cris, ppc TCG */ }; -extern CPUState *first_cpu; +QTAILQ_HEAD(CPUTailQ, CPUState); +extern struct CPUTailQ cpus; +#define CPU_NEXT(cpu) QTAILQ_NEXT(cpu, node) +#define CPU_FOREACH(cpu) QTAILQ_FOREACH(cpu, &cpus, node) +#define CPU_FOREACH_SAFE(cpu, next_cpu) \ + QTAILQ_FOREACH_SAFE(cpu, &cpus, node, next_cpu) +#define first_cpu QTAILQ_FIRST(&cpus) DECLARE_TLS(CPUState *, current_cpu); #define current_cpu tls_var(current_cpu) diff --git a/kvm-all.c b/kvm-all.c index 875e32e..c29a015 100644 --- a/kvm-all.c +++ b/kvm-all.c @@ -1925,7 +1925,7 @@ int kvm_insert_breakpoint(CPUState *cpu, target_ulong addr, } } - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { err = kvm_update_guest_debug(cpu, 0); if (err) { return err; @@ -1965,7 +1965,7 @@ int kvm_remove_breakpoint(CPUState *cpu, target_ulong addr, } } - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { err = kvm_update_guest_debug(cpu, 0); if (err) { return err; @@ -1982,7 +1982,7 @@ void kvm_remove_all_breakpoints(CPUState *cpu) QTAILQ_FOREACH_SAFE(bp, &s->kvm_sw_breakpoints, entry, next) { if (kvm_arch_remove_sw_breakpoint(cpu, bp) != 0) { /* Try harder to find a CPU that currently sees the breakpoint. */ - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { if (kvm_arch_remove_sw_breakpoint(cpu, bp) == 0) { break; } @@ -1993,7 +1993,7 @@ void kvm_remove_all_breakpoints(CPUState *cpu) } kvm_arch_remove_all_hw_breakpoints(); - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { kvm_update_guest_debug(cpu, 0); } } diff --git a/linux-user/elfload.c b/linux-user/elfload.c index 7ce2eab..72d9270 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -2668,7 +2668,7 @@ static int fill_note_info(struct elf_note_info *info, /* read and fill status of all threads */ cpu_list_lock(); - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { if (cpu == thread_cpu) { continue; } diff --git a/linux-user/main.c b/linux-user/main.c index 03859bc..5c2f7b2 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -117,10 +117,14 @@ void fork_end(int child) { mmap_fork_end(child); if (child) { + CPUState *cpu, *next_cpu; /* Child processes created by fork() only have a single thread. Discard information about the parent threads. */ - first_cpu = thread_cpu; - first_cpu->next_cpu = NULL; + CPU_FOREACH_SAFE(cpu, next_cpu) { + if (cpu != thread_cpu) { + QTAILQ_REMOVE(&cpus, thread_cpu, node); + } + } pending_cpus = 0; pthread_mutex_init(&exclusive_lock, NULL); pthread_mutex_init(&cpu_list_mutex, NULL); @@ -154,7 +158,7 @@ static inline void start_exclusive(void) pending_cpus = 1; /* Make all other cpus stop executing. */ - for (other_cpu = first_cpu; other_cpu; other_cpu = other_cpu->next_cpu) { + CPU_FOREACH(other_cpu) { if (other_cpu->running) { pending_cpus++; cpu_exit(other_cpu); diff --git a/linux-user/syscall.c b/linux-user/syscall.c index f986548..ecead51 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -5113,25 +5113,12 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, Do thread termination if we have more then one thread. */ /* FIXME: This probably breaks if a signal arrives. We should probably be disabling signals. */ - if (first_cpu->next_cpu) { + if (CPU_NEXT(first_cpu)) { TaskState *ts; - CPUState **lastp; - CPUState *p; cpu_list_lock(); - lastp = &first_cpu; - p = first_cpu; - while (p && p != cpu) { - lastp = &p->next_cpu; - p = p->next_cpu; - } - /* If we didn't find the CPU for this thread then something is - horribly wrong. */ - if (!p) { - abort(); - } /* Remove the CPU from the list. */ - *lastp = p->next_cpu; + QTAILQ_REMOVE(&cpus, cpu, node); cpu_list_unlock(); ts = ((CPUArchState *)cpu_env)->opaque; if (ts->child_tidptr) { diff --git a/memory_mapping.c b/memory_mapping.c index eeeeb44..87a6ed5 100644 --- a/memory_mapping.c +++ b/memory_mapping.c @@ -270,7 +270,7 @@ static CPUState *find_paging_enabled_cpu(CPUState *start_cpu) { CPUState *cpu; - for (cpu = start_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { if (cpu_paging_enabled(cpu)) { return cpu; } @@ -289,7 +289,8 @@ void qemu_get_guest_memory_mapping(MemoryMappingList *list, first_paging_enabled_cpu = find_paging_enabled_cpu(first_cpu); if (first_paging_enabled_cpu) { - for (cpu = first_paging_enabled_cpu; cpu != NULL; cpu = cpu->next_cpu) { + for (cpu = first_paging_enabled_cpu; cpu != NULL; + cpu = CPU_NEXT(cpu)) { Error *err = NULL; cpu_get_memory_mapping(cpu, list, &err); if (err) { diff --git a/monitor.c b/monitor.c index 0aeaf6c..683babf 100644 --- a/monitor.c +++ b/monitor.c @@ -2002,7 +2002,7 @@ static void do_info_numa(Monitor *mon, const QDict *qdict) monitor_printf(mon, "%d nodes\n", nb_numa_nodes); for (i = 0; i < nb_numa_nodes; i++) { monitor_printf(mon, "node %d cpus:", i); - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { if (cpu->numa_node == i) { monitor_printf(mon, " %d", cpu->cpu_index); } diff --git a/target-i386/helper.c b/target-i386/helper.c index bf3e2ac..7c58e27 100644 --- a/target-i386/helper.c +++ b/target-i386/helper.c @@ -1231,8 +1231,7 @@ void cpu_x86_inject_mce(Monitor *mon, X86CPU *cpu, int bank, params.mcg_status = MCG_STATUS_MCIP | MCG_STATUS_RIPV; params.addr = 0; params.misc = 0; - for (other_cs = first_cpu; other_cs != NULL; - other_cs = other_cs->next_cpu) { + CPU_FOREACH(other_cs) { if (other_cs == cs) { continue; } diff --git a/target-i386/misc_helper.c b/target-i386/misc_helper.c index 957926c..93933fd 100644 --- a/target-i386/misc_helper.c +++ b/target-i386/misc_helper.c @@ -610,7 +610,7 @@ void helper_mwait(CPUX86State *env, int next_eip_addend) cpu = x86_env_get_cpu(env); cs = CPU(cpu); /* XXX: not complete but not completely erroneous */ - if (cs->cpu_index != 0 || cs->next_cpu != NULL) { + if (cs->cpu_index != 0 || CPU_NEXT(cs) != NULL) { /* more than one CPU: do not sleep because another CPU may wake this one */ } else { diff --git a/target-mips/op_helper.c b/target-mips/op_helper.c index b828375..8e3a6d7 100644 --- a/target-mips/op_helper.c +++ b/target-mips/op_helper.c @@ -1699,15 +1699,14 @@ target_ulong helper_dvpe(CPUMIPSState *env) CPUState *other_cs = first_cpu; target_ulong prev = env->mvp->CP0_MVPControl; - do { + CPU_FOREACH(other_cs) { MIPSCPU *other_cpu = MIPS_CPU(other_cs); /* Turn off all VPEs except the one executing the dvpe. */ if (&other_cpu->env != env) { other_cpu->env.mvp->CP0_MVPControl &= ~(1 << CP0MVPCo_EVP); mips_vpe_sleep(other_cpu); } - other_cs = other_cs->next_cpu; - } while (other_cs); + } return prev; } @@ -1716,7 +1715,7 @@ target_ulong helper_evpe(CPUMIPSState *env) CPUState *other_cs = first_cpu; target_ulong prev = env->mvp->CP0_MVPControl; - do { + CPU_FOREACH(other_cs) { MIPSCPU *other_cpu = MIPS_CPU(other_cs); if (&other_cpu->env != env @@ -1726,8 +1725,7 @@ target_ulong helper_evpe(CPUMIPSState *env) other_cpu->env.mvp->CP0_MVPControl |= (1 << CP0MVPCo_EVP); mips_vpe_wake(other_cpu); /* And wake it up. */ } - other_cs = other_cs->next_cpu; - } while (other_cs); + } return prev; } #endif /* !CONFIG_USER_ONLY */ diff --git a/target-ppc/excp_helper.c b/target-ppc/excp_helper.c index e957761..c959460 100644 --- a/target-ppc/excp_helper.c +++ b/target-ppc/excp_helper.c @@ -1002,7 +1002,7 @@ void helper_msgsnd(target_ulong rb) return; } - for (cs = first_cpu; cs != NULL; cs = cs->next_cpu) { + CPU_FOREACH(cs) { PowerPCCPU *cpu = POWERPC_CPU(cs); CPUPPCState *cenv = &cpu->env; diff --git a/target-s390x/misc_helper.c b/target-s390x/misc_helper.c index 4afd7da..1690907 100644 --- a/target-s390x/misc_helper.c +++ b/target-s390x/misc_helper.c @@ -183,12 +183,12 @@ uint32_t HELPER(servc)(CPUS390XState *env, uint64_t r1, uint64_t r2) #ifndef CONFIG_USER_ONLY static void cpu_reset_all(void) { - CPUState *cpu; + CPUState *cs; S390CPUClass *scc; - for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) { - scc = S390_CPU_GET_CLASS(CPU(cpu)); - scc->cpu_reset(CPU(cpu)); + CPU_FOREACH(cs) { + scc = S390_CPU_GET_CLASS(cs); + scc->cpu_reset(cs); } } diff --git a/translate-all.c b/translate-all.c index 3b5fc7c..2c923c6 100644 --- a/translate-all.c +++ b/translate-all.c @@ -696,7 +696,7 @@ void tb_flush(CPUArchState *env1) } tcg_ctx.tb_ctx.nb_tbs = 0; - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { CPUArchState *env = cpu->env_ptr; memset(env->tb_jmp_cache, 0, TB_JMP_CACHE_SIZE * sizeof(void *)); @@ -850,7 +850,7 @@ void tb_phys_invalidate(TranslationBlock *tb, tb_page_addr_t page_addr) /* remove the TB from the hash list */ h = tb_jmp_cache_hash_func(tb->pc); - for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { + CPU_FOREACH(cpu) { CPUArchState *env = cpu->env_ptr; if (env->tb_jmp_cache[h] == tb) {