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Kernel: Move process creation perf events to PerformanceManager

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This commit is contained in:
Brian Gianforcaro 2021-05-07 01:38:50 -07:00 committed by Andreas Kling
parent ccdcb6a635
commit 8bf4201f50
Notes: sideshowbarker 2024-07-18 18:36:48 +09:00 
Author: https://github.com/bgianfo
Commit: https://github.com/SerenityOS/serenity/commit/8bf4201f50e
Pull-request: https://github.com/SerenityOS/serenity/pull/6909
4 changed files with 23 additions and 13 deletions
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16
Kernel/PerformanceManager.h
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@ -13,8 +13,22 @@
namespace Kernel {
class PerformanceManager {
public:
inline static void add_process_created_event(Process& process)
{
if (g_profiling_all_threads) {
VERIFY(g_global_perf_events);
g_global_perf_events->add_process(process, ProcessEventType::Create);
}
}
inline static void add_process_exec_event(Process& process)
{
if (auto* event_buffer = process.current_perf_events_buffer()) {
event_buffer->add_process(process, ProcessEventType::Exec);
}
}
inline static void add_thread_created_event(Thread& thread)
{
if (auto* event_buffer = thread.process().current_perf_events_buffer()) {

6
Kernel/Syscalls/execve.cpp
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@ -11,7 +11,7 @@
#include <Kernel/Debug.h>
#include <Kernel/FileSystem/Custody.h>
#include <Kernel/FileSystem/FileDescription.h>
#include <Kernel/PerformanceEventBuffer.h>
#include <Kernel/PerformanceManager.h>
#include <Kernel/Process.h>
#include <Kernel/Random.h>
#include <Kernel/Time/TimeManagement.h>
@ -636,9 +636,7 @@ KResult Process::do_exec(NonnullRefPtr<FileDescription> main_program_description
tss.cr3 = space().page_directory().cr3();
tss.ss2 = pid().value();
if (auto* event_buffer = current_perf_events_buffer()) {
event_buffer->add_process(*this, ProcessEventType::Exec);
}
PerformanceManager::add_process_exec_event(*this);
{
ScopedSpinLock lock(g_scheduler_lock);

7
Kernel/Syscalls/fork.cpp
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@ -7,7 +7,7 @@
#include <Kernel/Debug.h>
#include <Kernel/FileSystem/Custody.h>
#include <Kernel/FileSystem/FileDescription.h>
#include <Kernel/PerformanceEventBuffer.h>
#include <Kernel/PerformanceManager.h>
#include <Kernel/Process.h>
#include <Kernel/VM/Region.h>
@ -85,10 +85,7 @@ KResultOr<pid_t> Process::sys$fork(RegisterState& regs)
g_processes->prepend(child);
}
if (g_profiling_all_threads) {
VERIFY(g_global_perf_events);
g_global_perf_events->add_process(*child, ProcessEventType::Create);
}
PerformanceManager::add_process_created_event(*child);
ScopedSpinLock lock(g_scheduler_lock);
child_first_thread->set_affinity(Thread::current()->affinity());

7
Kernel/Syscalls/profiling.cpp
View File

@ -7,7 +7,7 @@
#include <Kernel/CoreDump.h>
#include <Kernel/FileSystem/FileDescription.h>
#include <Kernel/FileSystem/VirtualFileSystem.h>
#include <Kernel/PerformanceEventBuffer.h>
#include <Kernel/PerformanceManager.h>
#include <Kernel/Process.h>
namespace Kernel {
@ -27,12 +27,13 @@ KResultOr<int> Process::sys$profiling_enable(pid_t pid)
g_global_perf_events->clear();
else
g_global_perf_events = PerformanceEventBuffer::try_create_with_size(32 * MiB).leak_ptr();
ScopedSpinLock lock(g_processes_lock);
g_profiling_all_threads = true;
Process::for_each([](auto& process) {
g_global_perf_events->add_process(process, ProcessEventType::Create);
PerformanceManager::add_process_created_event(process);
return IterationDecision::Continue;
});
g_profiling_all_threads = true;
return 0;
}