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| author | Chun-Tse Shao <ctshao@google.com> | 2026-06-02 11:13:48 -0700 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-06-04 11:38:38 +0200 |
| commit | 2369ce0f16b89e3d85c9683c06eb104545999378 (patch) | |
| tree | 5da70927d92abe7d551cfe4dfe595ff3399f59cf /rust/kernel/alloc/allocator | |
| parent | 1a308a168c9286a335a05926204ef3ebb68fba1c (diff) | |
perf: Reveal PMU type in fdinfo
It gives useful info on knowing which PMUs are reserved by this process.
Also add config which would be useful.
Testing cycles:
$ ./perf stat -e cycles &
$ cat /proc/`pidof perf`/fdinfo/3
pos: 0
flags: 02000002
mnt_id: 16
ino: 3081
perf_event_attr.type: 0
perf_event_attr.config: 0x0
perf_event_attr.config1: 0x0
perf_event_attr.config2: 0x0
perf_event_attr.config3: 0x0
perf_event_attr.config4: 0x0
Testing L1-dcache-load-misses:
$ ./perf stat -e L1-dcache-load-misses &
$ cat /proc/`pidof perf`/fdinfo/3
pos: 0
flags: 02000002
mnt_id: 16
ino: 1072
perf_event_attr.type: 3
perf_event_attr.config: 0x10000
perf_event_attr.config1: 0x0
perf_event_attr.config2: 0x0
perf_event_attr.config3: 0x0
perf_event_attr.config4: 0x0
Signed-off-by: Chun-Tse Shao <ctshao@google.com>
Assisted-by: Gemini:gemini-3.1-pro-preview
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Ian Rogers <irogers@google.com>
Link: https://patch.msgid.link/20260602181349.3969429-1-ctshao@google.com
Diffstat (limited to 'rust/kernel/alloc/allocator')
0 files changed, 0 insertions, 0 deletions