lkml.org 
[lkml]   [2015]   [Apr]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[RFC PATCH 21/22] perf bpf: probe at kprobe points.
    Date
    ---
    tools/perf/util/bpf-loader.c | 18 ++++++++++++++++++
    1 file changed, 18 insertions(+)

    diff --git a/tools/perf/util/bpf-loader.c b/tools/perf/util/bpf-loader.c
    index 208f5e8..186a3d0 100644
    --- a/tools/perf/util/bpf-loader.c
    +++ b/tools/perf/util/bpf-loader.c
    @@ -952,8 +952,26 @@ out:
    return -1;
    }

    +static int bpf_probe(void)
    +{
    + int err = add_perf_probe_events(params.event_array,
    + params.nr_events,
    + MAX_PROBES, 0);
    + /* add_perf_probe_events return negative when fail */
    + if (err < 0)
    + pr_err("bpf probe: failed to probe events\n");
    +
    + return err < 0 ? err : 0;
    +}
    +
    int bpf__run(void)
    {
    + int err;
    +
    + pr_debug("bpf: probing\n");
    + if ((err = bpf_probe()))
    + return err;
    +
    pr_info("BPF is running. Use Ctrl-c to stop.\n");
    while(1)
    sleep(1);
    --
    1.8.3.4


    \
     
     \ /
      Last update: 2015-04-30 13:21    [W:2.130 / U:0.016 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site