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Kernel: Make sure we only log profiling events when m_profiling is true

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Previously the process' m_profiling flag was ignored for all event
types other than CPU samples.

The kfree tracing code relies on temporarily disabling tracing during
exec. This didn't work for per-process profiles and would instead
panic.

This updates the profiling code so that the m_profiling flag isn't
ignored.
This commit is contained in:
Gunnar Beutner 2021-05-23 22:16:30 +02:00 • committed by Linus Groh
parent a8ca4751b9
commit 0688e02339
4 changed files with 15 additions and 16 deletions
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7
Kernel/Process.h
View file

@ -559,7 +559,12 @@ private:
inline PerformanceEventBuffer* current_perf_events_buffer()
{
return g_profiling_all_threads ? g_global_perf_events : m_perf_event_buffer.ptr();
if (g_profiling_all_threads)
return g_global_perf_events;
else if (m_profiling)
return m_perf_event_buffer.ptr();
else
return nullptr;
}
Process* m_prev { nullptr };