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Kernel: Move cpu sample perf event to PerformanceManager

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This commit is contained in:
Brian Gianforcaro 2021-05-07 01:48:42 -07:00 committed by Andreas Kling
parent d7089a0417
commit 7463cbdbdb
Notes: sideshowbarker 2024-07-18 18:36:41 +09:00 
Author: https://github.com/bgianfo
Commit: https://github.com/SerenityOS/serenity/commit/7463cbdbdb7
Pull-request: https://github.com/SerenityOS/serenity/pull/6909
2 changed files with 25 additions and 20 deletions
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23
Kernel/PerformanceManager.h
View File

@ -52,6 +52,29 @@ public:
}
}
inline static void add_cpu_sample_event(Thread& current_thread, const RegisterState& regs)
{
PerformanceEventBuffer* perf_events = nullptr;
if (g_profiling_all_threads) {
VERIFY(g_global_perf_events);
// FIXME: We currently don't collect samples while idle.
// That will be an interesting mode to add in the future. :^)
if (&current_thread != Processor::current().idle_thread()) {
perf_events = g_global_perf_events;
}
} else if (current_thread.process().is_profiling()) {
VERIFY(current_thread.process().perf_events());
perf_events = current_thread.process().perf_events();
}
if (perf_events) {
[[maybe_unused]] auto rc = perf_events->append_with_eip_and_ebp(
current_thread.pid(), current_thread.tid(),
regs.eip, regs.ebp, PERF_EVENT_SAMPLE, 0, 0, nullptr);
}
}
inline static void add_mmap_perf_event(Process& current_process, Region const& region)
{
if (auto* event_buffer = current_process.current_perf_events_buffer()) {

22
Kernel/Scheduler.cpp
View File

@ -10,7 +10,7 @@
#include <AK/Time.h>
#include <Kernel/Debug.h>
#include <Kernel/Panic.h>
#include <Kernel/PerformanceEventBuffer.h>
#include <Kernel/PerformanceManager.h>
#include <Kernel/Process.h>
#include <Kernel/RTC.h>
#include <Kernel/Scheduler.h>
@ -501,25 +501,7 @@ void Scheduler::timer_tick(const RegisterState& regs)
return; // TODO: This prevents scheduling on other CPUs!
#endif
PerformanceEventBuffer* perf_events = nullptr;
if (g_profiling_all_threads) {
VERIFY(g_global_perf_events);
// FIXME: We currently don't collect samples while idle.
// That will be an interesting mode to add in the future. :^)
if (current_thread != Processor::current().idle_thread()) {
perf_events = g_global_perf_events;
}
} else if (current_thread->process().is_profiling()) {
VERIFY(current_thread->process().perf_events());
perf_events = current_thread->process().perf_events();
}
if (perf_events) {
[[maybe_unused]] auto rc = perf_events->append_with_eip_and_ebp(
current_thread->pid(), current_thread->tid(),
regs.eip, regs.ebp, PERF_EVENT_SAMPLE, 0, 0, nullptr);
}
PerformanceManager::add_cpu_sample_event(*current_thread, regs);
if (current_thread->tick())
return;