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Kernel+LibC: Add support for filtering profiling events

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This adds the -t command-line argument for the profile tool. Using this
argument you can filter which event types you want in your profile.
This commit is contained in:
Gunnar Beutner 2021-05-14 08:10:43 +02:00 • committed by Andreas Kling
parent 8b2ace0326
commit 572bbf28cc
10 changed files with 72 additions and 33 deletions
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4
Userland/Libraries/LibC/serenity.cpp
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@ -30,9 +30,9 @@ int module_unload(const char* name, size_t name_length)
__RETURN_WITH_ERRNO(rc, rc, -1);
}
int profiling_enable(pid_t pid)
int profiling_enable(pid_t pid, uint64_t event_mask)
{
int rc = syscall(SC_profiling_enable, pid);
int rc = syscall(SC_profiling_enable, pid, event_mask);
__RETURN_WITH_ERRNO(rc, rc, -1);
}

26
Userland/Libraries/LibC/serenity.h
View file

@ -17,7 +17,7 @@ int disown(pid_t);
int module_load(const char* path, size_t path_length);
int module_unload(const char* name, size_t name_length);
int profiling_enable(pid_t);
int profiling_enable(pid_t, uint64_t);
int profiling_disable(pid_t);
int profiling_free_buffer(pid_t);
@ -76,19 +76,21 @@ int futex(uint32_t* userspace_address, int futex_op, uint32_t value, const struc
int purge(int mode);
enum {
PERF_EVENT_SAMPLE,
PERF_EVENT_MALLOC,
PERF_EVENT_FREE,
PERF_EVENT_MMAP,
PERF_EVENT_MUNMAP,
PERF_EVENT_PROCESS_CREATE,
PERF_EVENT_PROCESS_EXEC,
PERF_EVENT_PROCESS_EXIT,
PERF_EVENT_THREAD_CREATE,
PERF_EVENT_THREAD_EXIT,
PERF_EVENT_CONTEXT_SWITCH,
PERF_EVENT_SAMPLE = 1,
PERF_EVENT_MALLOC = 2,
PERF_EVENT_FREE = 4,
PERF_EVENT_MMAP = 8,
PERF_EVENT_MUNMAP = 16,
PERF_EVENT_PROCESS_CREATE = 32,
PERF_EVENT_PROCESS_EXEC = 64,
PERF_EVENT_PROCESS_EXIT = 128,
PERF_EVENT_THREAD_CREATE = 256,
PERF_EVENT_THREAD_EXIT = 512,
PERF_EVENT_CONTEXT_SWITCH = 1024,
};
#define PERF_EVENT_MASK_ALL (~0ull)
int perf_event(int type, uintptr_t arg1, uintptr_t arg2);
int get_stack_bounds(uintptr_t* user_stack_base, size_t* user_stack_size);