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perf_event_open.2: grfix
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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.\" This document is based on the perf_event.h header file, the
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.\" tools/perf/design.txt file, and a lot of bitter experience.
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.\"
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.TH PERF_EVENT_OPEN 2 2013-06-21 "Linux" "Linux Programmer's Manual"
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.TH PERF_EVENT_OPEN 2 2013-07-02 "Linux" "Linux Programmer's Manual"
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.SH NAME
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perf_event_open \- set up performance monitoring
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.SH SYNOPSIS
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@ -1666,7 +1666,7 @@ file descriptor argument.
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If the
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.B PERF_IOC_FLAG_GROUP
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bit is set in the ioctl argument then all events in a group are
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bit is set in the ioctl argument, then all events in a group are
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enabled, even if the event specified is not the group leader.
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.TP
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.B PERF_EVENT_IOC_DISABLE
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@ -1682,7 +1682,7 @@ stops that counter from counting but doesn't affect any other counter.
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If the
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.B PERF_IOC_FLAG_GROUP
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bit is set in the ioctl argument then all events in a group are
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bit is set in the ioctl argument, then all events in a group are
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disabled, even if the event specified is not the group leader.
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.TP
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.B PERF_EVENT_IOC_REFRESH
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@ -1711,12 +1711,12 @@ values.
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If the
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.B PERF_IOC_FLAG_GROUP
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bit is set in the ioctl argument then all events in a group are
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bit is set in the ioctl argument, then all events in a group are
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reset, even if the event specified is not the group leader.
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If the
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.B PERF_IOC_FLAG_GROUP
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bit is not set then the behavior is somwhat unexpected:
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bit is not set, then the behavior is somwhat unexpected:
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when sent to a group leader only the leader is reset
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(children are left alone);
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when sent to a child all events in a group are reset.
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