diff options
Diffstat (limited to 'tools/perf/Documentation')
| -rw-r--r-- | tools/perf/Documentation/perf-lock.txt | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/tools/perf/Documentation/perf-lock.txt b/tools/perf/Documentation/perf-lock.txt index 38e79d45e426..dea04ad5c28e 100644 --- a/tools/perf/Documentation/perf-lock.txt +++ b/tools/perf/Documentation/perf-lock.txt @@ -143,25 +143,25 @@ CONTENTION OPTIONS System-wide collection from all CPUs. -C:: ---cpu:: +--cpu=<value>:: Collect samples only on the list of CPUs provided. Multiple CPUs can be provided as a comma-separated list with no space: 0,1. Ranges of CPUs are specified with -: 0-2. Default is to monitor all CPUs. -p:: ---pid=:: +--pid=<value>:: Record events on existing process ID (comma separated list). ---tid=:: +--tid=<value>:: Record events on existing thread ID (comma separated list). ---map-nr-entries:: +--map-nr-entries=<value>:: Maximum number of BPF map entries (default: 10240). ---max-stack:: +--max-stack=<value>:: Maximum stack depth when collecting lock contention (default: 8). ---stack-skip +--stack-skip=<value>:: Number of stack depth to skip when finding a lock caller (default: 3). -E:: @@ -172,6 +172,17 @@ CONTENTION OPTIONS --lock-addr:: Show lock contention stat by address +-Y:: +--type-filter=<value>:: + Show lock contention only for given lock types (comma separated list). + Available values are: + semaphore, spinlock, rwlock, rwlock:R, rwlock:W, rwsem, rwsem:R, rwsem:W, + rtmutex, rwlock-rt, rwlock-rt:R, rwlock-rt:W, pcpu-sem, pcpu-sem:R, pcpu-sem:W, + mutex + + Note that RW-variant of locks have :R and :W suffix. Names without the + suffix are shortcuts for the both variants. Ex) rwsem = rwsem:R + rwsem:W. + SEE ALSO -------- |