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| author | Chun-Tse Shao <ctshao@google.com> | 2025-02-26 16:28:53 -0800 |
|---|---|---|
| committer | Namhyung Kim <namhyung@kernel.org> | 2025-02-28 00:29:36 -0800 |
| commit | 17ae7f904977f3d097004f91158abcc10e0df484 (patch) | |
| tree | d161e04c7c57f3ab76e9370b05b5dff7a6964525 /tools/perf/util/trace-event-scripting.c | |
| parent | perf cpumap: Reduce cpu size from int to int16_t (diff) | |
| download | linux-17ae7f904977f3d097004f91158abcc10e0df484.tar.gz linux-17ae7f904977f3d097004f91158abcc10e0df484.zip | |
perf lock: Add bpf maps for owner stack tracing
Add a struct and few bpf maps in order to tracing owner stack.
`struct owner_tracing_data`: Contains owner's pid, stack id, timestamp for
when the owner acquires lock, and the count of lock waiters.
`stack_buf`: Percpu buffer for retrieving owner stacktrace.
`owner_stacks`: For tracing owner stacktrace to customized owner stack id.
`owner_data`: For tracing lock_address to `struct owner_tracing_data` in
bpf program.
`owner_stat`: For reporting owner stacktrace in usermode.
Signed-off-by: Chun-Tse Shao <ctshao@google.com>
Tested-by: Athira Rajeev <atrajeev@linux.ibm.com>
Link: https://lore.kernel.org/r/20250227003359.732948-2-ctshao@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions