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    Subject[PATCH 07/11] perf: Handle injection iotcl for tracepoints from perf record
    Date
    Call the injection iotcl request for tracepoint events, in case
    some of them support it.

    Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
    Cc: Steven Rostedt <rostedt@goodmis.org>
    Cc: Paul Mackerras <paulus@samba.org>
    Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
    Cc: Li Zefan <lizf@cn.fujitsu.com>
    Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
    Cc: Masami Hiramatsu <mhiramat@redhat.com>
    Cc: Jens Axboe <jens.axboe@oracle.com>
    ---
    tools/perf/builtin-record.c | 9 +++++++++
    1 files changed, 9 insertions(+), 0 deletions(-)

    diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
    index eea5691..da42519 100644
    --- a/tools/perf/builtin-record.c
    +++ b/tools/perf/builtin-record.c
    @@ -386,6 +386,15 @@ try_again:
    }

    ioctl(fd[nr_cpu][counter], PERF_EVENT_IOC_ENABLE);
    +
    + /*
    + * If a tracepoint has some events he wants us to catchup
    + * let's inject them. We may have such injectable event
    + * in several cpus, we want only one injection, so pick the
    + * first cpu
    + */
    + if (attr->type == PERF_TYPE_TRACEPOINT && !nr_cpu)
    + ioctl(fd[nr_cpu][counter], PERF_EVENT_IOC_INJECT);
    }

    static void open_counters(int cpu, pid_t pid)
    --
    1.6.2.3


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