diff options
| -rw-r--r-- | man2/perf_event_open.2 | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/man2/perf_event_open.2 b/man2/perf_event_open.2 index e197ede39b..fac4093436 100644 --- a/man2/perf_event_open.2 +++ b/man2/perf_event_open.2 @@ -1624,7 +1624,7 @@ is the amount of data actually dumped (can be less than .I weight If .B PERF_SAMPLE_WEIGHT -is enabled, then a 64 bit value provided by the hardwre +is enabled, then a 64 bit value provided by the hardware is recorded that indicates how costly the event was. This allows expensive events to stand out more clearly in profiles. @@ -1873,7 +1873,7 @@ Using an argument of 0 is considered undefined behavior. .TP .B PERF_EVENT_IOC_RESET Reset the event count specified by the -file descriptor argumentto zero. +file descriptor argument to zero. This resets only the counts; there is no way to reset the multiplexing .I time_enabled @@ -1888,7 +1888,7 @@ reset, even if the event specified is not the group leader. If the .B PERF_IOC_FLAG_GROUP -bit is not set, then the behavior is somwhat unexpected: +bit is not set, then the behavior is somewhat unexpected: when sent to a group leader only the leader is reset (children are left alone); when sent to a child all events in a group are reset. |