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Kernel: Make perf_event() work for global profiles

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Previously calls to perf_event() would end up in a process-specific
perfcore file even though global profiling was enabled. This changes
the behavior for perf_event() so that these events are stored into
the global profile instead.
This commit is contained in:
Gunnar Beutner 2021-05-15 15:05:18 +02:00 • committed by Andreas Kling
parent 704bfe54b6
commit 4ab9d8736b
Notes: sideshowbarker 2024-07-18 18:06:27 +09:00
1 changed files with 7 additions and 3 deletions
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10
Kernel/Syscalls/perf_event.cpp
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@ -11,9 +11,13 @@ namespace Kernel {
KResultOr<int> Process::sys$perf_event(int type, FlatPtr arg1, FlatPtr arg2)
{
if (!create_perf_events_buffer_if_needed())
return ENOMEM;
return perf_events()->append(type, arg1, arg2, nullptr);
auto events_buffer = current_perf_events_buffer();
if (!events_buffer) {
if (!create_perf_events_buffer_if_needed())
return ENOMEM;
events_buffer = perf_events();
}
return events_buffer->append(type, arg1, arg2, nullptr);
}
}