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cpu: hook plugin vcpu events

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Signed-off-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
This commit is contained in:
Emilio G. Cota 2018-10-21 13:30:35 -04:00 committed by Alex Bennée
parent c36f7a642c
commit 30865f3168
3 changed files with 14 additions and 0 deletions
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10
cpus.c
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@ -45,6 +45,7 @@
#include "exec/exec-all.h" #include "exec/exec-all.h"
#include "qemu/thread.h" #include "qemu/thread.h"
#include "qemu/plugin.h"
#include "sysemu/cpus.h" #include "sysemu/cpus.h"
#include "sysemu/qtest.h" #include "sysemu/qtest.h"
#include "qemu/main-loop.h" #include "qemu/main-loop.h"
@ -1264,9 +1265,18 @@ static void qemu_tcg_rr_wait_io_event(void)
static void qemu_wait_io_event(CPUState *cpu) static void qemu_wait_io_event(CPUState *cpu)
{ {
bool slept = false;
while (cpu_thread_is_idle(cpu)) { while (cpu_thread_is_idle(cpu)) {
if (!slept) {
slept = true;
qemu_plugin_vcpu_idle_cb(cpu);
}
qemu_cond_wait(cpu->halt_cond, &qemu_global_mutex); qemu_cond_wait(cpu->halt_cond, &qemu_global_mutex);
} }
if (slept) {
qemu_plugin_vcpu_resume_cb(cpu);
}
#ifdef _WIN32 #ifdef _WIN32
/* Eat dummy APC queued by qemu_cpu_kick_thread. */ /* Eat dummy APC queued by qemu_cpu_kick_thread. */

2
exec.c
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@ -975,6 +975,8 @@ void cpu_exec_realizefn(CPUState *cpu, Error **errp)
} }
tlb_init(cpu); tlb_init(cpu);
qemu_plugin_vcpu_init_hook(cpu);
#ifndef CONFIG_USER_ONLY #ifndef CONFIG_USER_ONLY
if (qdev_get_vmsd(DEVICE(cpu)) == NULL) { if (qdev_get_vmsd(DEVICE(cpu)) == NULL) {
vmstate_register(NULL, cpu->cpu_index, &vmstate_cpu_common, cpu); vmstate_register(NULL, cpu->cpu_index, &vmstate_cpu_common, cpu);

2
hw/core/cpu.c
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@ -32,6 +32,7 @@
#include "hw/boards.h" #include "hw/boards.h"
#include "hw/qdev-properties.h" #include "hw/qdev-properties.h"
#include "trace-root.h" #include "trace-root.h"
#include "qemu/plugin.h"
CPUInterruptHandler cpu_interrupt_handler; CPUInterruptHandler cpu_interrupt_handler;
@ -352,6 +353,7 @@ static void cpu_common_unrealizefn(DeviceState *dev, Error **errp)
CPUState *cpu = CPU(dev); CPUState *cpu = CPU(dev);
/* NOTE: latest generic point before the cpu is fully unrealized */ /* NOTE: latest generic point before the cpu is fully unrealized */
trace_fini_vcpu(cpu); trace_fini_vcpu(cpu);
qemu_plugin_vcpu_exit_hook(cpu);
cpu_exec_unrealizefn(cpu); cpu_exec_unrealizefn(cpu);
} }