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    Subject[PATCH][manpages 1/2] perf_event_open.2: Document PERF_EVENT_IOC_PAUSE_OUTPUT
    Date
    Signed-off-by: Wang Nan <wangnan0@huawei.com>
    ---
    man2/perf_event_open.2 | 11 +++++++++++
    1 file changed, 11 insertions(+)

    diff --git a/man2/perf_event_open.2 b/man2/perf_event_open.2
    index c90fc51..b232cba 100644
    --- a/man2/perf_event_open.2
    +++ b/man2/perf_event_open.2
    @@ -2719,6 +2719,17 @@ The argument is a BPF program file descriptor that was created by
    a previous
    .BR bpf (2)
    system call.
    +.TP
    +.BR PERF_EVENT_IOC_PAUSE_OUTPUT " (since Linux 4.6)"
    +.\" commit ? (http://lkml.kernel.org/g/1459147292-239310-2-git-send-email-wangnan0@huawei.com)
    +This allows pausing and resuming the event's ring-buffer. A
    +paused ring-buffer does not prevent samples generation, but simply
    +discards them. The discarded samples are considered lost, causes
    +.BR PERF_RECORD_LOST
    +to be generated when possible.
    +
    +The argument is an integer. Nonzero value pauses the ring-buffer,
    +zero value resumes the ring-buffer.
    .SS Using prctl
    A process can enable or disable all the event groups that are
    attached to it using the
    --
    1.8.3.4
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