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Code Issues Projects Releases Packages Wiki Activity Actions 9

Kernel: Track performance events for context switches

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This commit is contained in:
Gunnar Beutner 2021-05-14 07:48:53 +02:00 • committed by Andreas Kling
commit 8b2ace0326
Notes: sideshowbarker 2024-07-18 17:45:47 +09:00
6 changed files with 29 additions and 2 deletions
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9
Kernel/PerformanceEventBuffer.cpp
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@ -107,6 +107,10 @@ KResult PerformanceEventBuffer::append_with_eip_and_ebp(ProcessID pid, ThreadID
break;
case PERF_EVENT_THREAD_EXIT:
break;
case PERF_EVENT_CONTEXT_SWITCH:
event.data.context_switch.next_pid = arg1;
event.data.context_switch.next_tid = arg2;
break;
default:
return EINVAL;
}
@ -180,6 +184,11 @@ bool PerformanceEventBuffer::to_json_impl(Serializer& object) const
case PERF_EVENT_THREAD_EXIT:
event_object.add("type", "thread_exit");
break;
case PERF_EVENT_CONTEXT_SWITCH:
event_object.add("type", "context_switch");
event_object.add("next_pid", static_cast<u64>(event.data.context_switch.next_pid));
event_object.add("next_tid", static_cast<u64>(event.data.context_switch.next_tid));
break;
}
event_object.add("pid", event.pid);
event_object.add("tid", event.tid);