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Kernel+ProfileViewer: Display additional filesystem events

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Jakub Berkop 2023-08-25 23:47:42 +02:00 • committed by Andrew Kaster
parent c184a0786f
commit 54e79aa1d9
16 changed files with 655 additions and 135 deletions
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35
Kernel/Tasks/PerformanceManager.h
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@ -1,5 +1,6 @@
/*
* Copyright (c) 2021, Brian Gianforcaro <bgianf@serenityos.org>
* Copyright (c) 2023, Jakub Berkop <jakub.berkop@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -128,40 +129,6 @@ public:
}
}
static void add_read_event(Thread& thread, int fd, size_t size, OpenFileDescription const& file_description, u64 start_timestamp, ErrorOr<FlatPtr> const& result)
{
if (thread.is_profiling_suppressed())
return;
auto* event_buffer = thread.process().current_perf_events_buffer();
if (event_buffer == nullptr)
return;
size_t filepath_string_index;
if (auto path = file_description.original_absolute_path(); !path.is_error()) {
auto registered_result = event_buffer->register_string(move(path.value()));
if (registered_result.is_error())
return;
filepath_string_index = registered_result.value();
} else if (auto pseudo_path = file_description.pseudo_path(); !pseudo_path.is_error()) {
auto registered_result = event_buffer->register_string(move(pseudo_path.value()));
if (registered_result.is_error())
return;
filepath_string_index = registered_result.value();
} else {
auto invalid_path_string = KString::try_create("<INVALID_FILE_PATH>"sv); // TODO: Performance, unnecessary allocations.
if (invalid_path_string.is_error())
return;
auto registered_result = event_buffer->register_string(move(invalid_path_string.value()));
if (registered_result.is_error())
return;
filepath_string_index = registered_result.value();
}
[[maybe_unused]] auto rc = event_buffer->append(PERF_EVENT_READ, fd, size, {}, &thread, filepath_string_index, start_timestamp, result); // wrong arguments
}
static void timer_tick(RegisterState const& regs)
{
static UnixDateTime last_wakeup;