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Kernel: Protect Process::m_name with a spinlock

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This also lets us remove the `get_process_name` and `set_process_name`
syscalls from the big lock. :^)
This commit is contained in:
Sam Atkins 2023-02-04 13:01:46 +00:00 • committed by Andreas Kling
parent b26ecca970
commit fe7b08dad7
13 changed files with 102 additions and 42 deletions
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9
Kernel/PerformanceEventBuffer.cpp
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@ -335,10 +335,13 @@ OwnPtr<PerformanceEventBuffer> PerformanceEventBuffer::try_create_with_size(size
ErrorOr<void> PerformanceEventBuffer::add_process(Process const& process, ProcessEventType event_type)
{
OwnPtr<KString> executable;
if (process.executable())
if (process.executable()) {
executable = TRY(process.executable()->try_serialize_absolute_path());
else
executable = TRY(KString::formatted("<{}>", process.name()));
} else {
executable = TRY(process.name().with([&](auto& process_name) {
return KString::formatted("<{}>", process_name->view());
}));
}
TRY(append_with_ip_and_bp(process.pid(), 0, 0, 0,
event_type == ProcessEventType::Create ? PERF_EVENT_PROCESS_CREATE : PERF_EVENT_PROCESS_EXEC,