Messages in this thread | | | Date | Wed, 06 May 2015 01:34:14 +0900 | From | Masami Hiramatsu <> | Subject | Re: [RFC PATCH 21/22] perf bpf: probe at kprobe points. |
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At least we need a description what this patch does... what will be done with this patch, and what the user will see and what/how they can do.
Thank you,
On 2015/04/30 19:52, Wang Nan wrote: > --- > 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); >
-- Masami HIRAMATSU Linux Technology Research Center, System Productivity Research Dept. Center for Technology Innovation - Systems Engineering Hitachi, Ltd., Research & Development Group E-mail: masami.hiramatsu.pt@hitachi.com
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