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Kernel: Add support for profiling kmalloc()/kfree()

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This commit is contained in:
Gunnar Beutner 2021-05-13 13:09:00 +02:00 • committed by Andreas Kling
parent 572bbf28cc
commit 277f333b2b
10 changed files with 84 additions and 2 deletions
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18
Kernel/PerformanceEventBuffer.cpp
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@ -114,6 +114,14 @@ KResult PerformanceEventBuffer::append_with_eip_and_ebp(ProcessID pid, ThreadID
event.data.context_switch.next_pid = arg1;
event.data.context_switch.next_tid = arg2;
break;
case PERF_EVENT_KMALLOC:
event.data.kmalloc.size = arg1;
event.data.kmalloc.ptr = arg2;
break;
case PERF_EVENT_KFREE:
event.data.kfree.size = arg1;
event.data.kfree.ptr = arg2;
break;
default:
return EINVAL;
}
@ -192,6 +200,16 @@ bool PerformanceEventBuffer::to_json_impl(Serializer& object) const
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;
case PERF_EVENT_KMALLOC:
event_object.add("type", "kmalloc");
event_object.add("ptr", static_cast<u64>(event.data.kmalloc.ptr));
event_object.add("size", static_cast<u64>(event.data.kmalloc.size));
break;
case PERF_EVENT_KFREE:
event_object.add("type", "kfree");
event_object.add("ptr", static_cast<u64>(event.data.kfree.ptr));
event_object.add("size", static_cast<u64>(event.data.kfree.size));
break;
}
event_object.add("pid", event.pid);
event_object.add("tid", event.tid);