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Profiler: Let the user ignore context switches

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Now that the profiling timer is independent from the scheduler the
user will get quite a few CPU samples from "within" the scheduler.
These events are less useful when just profiling a user-mode process
rather than the whole system. This patch adds an option to Profiler to
hide these events.
This commit is contained in:
Gunnar Beutner 2021-05-13 22:11:44 +02:00 • committed by Andreas Kling
commit d6b3513aab
Notes: sideshowbarker 2024-07-18 18:11:58 +09:00
4 changed files with 34 additions and 0 deletions
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15
Userland/DevTools/Profiler/Profile.cpp
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@ -99,6 +99,12 @@ void Profile::rebuild_tree()
if (!process_filter_contains(event.pid, event.timestamp))
continue;
if (!m_show_scheduler && !event.frames.is_empty()) {
auto top_frame = event.frames[event.frames.size() - 1];
if (top_frame.symbol == "Kernel::Scheduler::yield()")
continue;
}
m_filtered_event_indices.append(event_index);
if (event.type == "malloc" && !live_allocations.contains(event.ptr))
@ -450,6 +456,15 @@ void Profile::set_show_percentages(bool show_percentages)
m_show_percentages = show_percentages;
}
void Profile::set_show_scheduler(bool show_scheduler)
{
if (m_show_scheduler == show_scheduler)
return;
m_show_scheduler = show_scheduler;
// FIXME: This only works when kernel symbols are available
rebuild_tree();
}
void Profile::set_disassembly_index(const GUI::ModelIndex& index)
{
if (m_disassembly_index == index)