diff options
Diffstat (limited to 'tools/perf/Documentation/perf-trace.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-trace.txt | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-trace.txt b/tools/perf/Documentation/perf-trace.txt index fc6e43262c41..abc9b5d83312 100644 --- a/tools/perf/Documentation/perf-trace.txt +++ b/tools/perf/Documentation/perf-trace.txt @@ -42,6 +42,11 @@ OPTIONS Prefixing with ! shows all syscalls but the ones specified. You may need to escape it. +--filter=<filter>:: + Event filter. This option should follow an event selector (-e) which + selects tracepoint event(s). + + -D msecs:: --delay msecs:: After starting the program, wait msecs before measuring. This is useful to @@ -141,6 +146,10 @@ the thread executes on the designated CPUs. Default is to monitor all CPUs. Show all syscalls followed by a summary by thread with min, max, and average times (in msec) and relative stddev. +--errno-summary:: + To be used with -s or -S, to show stats for the errnos experienced by + syscalls, using only this option will trigger --summary. + --tool_stats:: Show tool stats such as number of times fd->pathname was discovered thru hooking the open syscall return + vfs_getname or via reading /proc/pid/fd, etc. @@ -176,6 +185,15 @@ the thread executes on the designated CPUs. Default is to monitor all CPUs. only at exit time or when a syscall is interrupted, i.e. in those cases this option is equivalent to the number of lines printed. +--switch-on EVENT_NAME:: + Only consider events after this event is found. + +--switch-off EVENT_NAME:: + Stop considering events after this event is found. + +--show-on-off-events:: + Show the --switch-on/off events too. + --max-stack:: Set the stack depth limit when parsing the callchain, anything beyond the specified depth will be ignored. Note that at this point @@ -210,6 +228,11 @@ the thread executes on the designated CPUs. Default is to monitor all CPUs. may happen, for instance, when a thread gets migrated to a different CPU while processing a syscall. +--libtraceevent_print:: + Use libtraceevent to print tracepoint arguments. By default 'perf trace' uses + the same beautifiers used in the strace-like enter+exit lines to augment the + tracepoint arguments. + --map-dump:: Dump BPF maps setup by events passed via -e, for instance the augmented_raw_syscalls living in tools/perf/examples/bpf/augmented_raw_syscalls.c. For now this |
