Re: [PATCH v6 01/11] perf tools script: Filter COMM/FORK/.. events by CPU

Arnaldo Carvalho de Melo
2019-03-11T16:58:14Z

Em Mon, Mar 11, 2019 at 07:44:52AM -0700, Andi Kleen escreveu:
> From: Andi Kleen <ak@linux.intel.com>
>
> The --cpu option only filtered samples. Filter other perf events,
> such as COMM, FORK, SWITCH by the CPU too.
>
> Reported-by: Jiri Olsa <jolsa@kernel.org>
> Signed-off-by: Andi Kleen <ak@linux.intel.com>

Thanks, applied.

> ---
> v2: Only filter printf output
> v3: Move checking to function
> ---
> tools/perf/builtin-script.c | 71 ++++++++++++++++++++++++-------------
> 1 file changed, 47 insertions(+), 24 deletions(-)
>
> diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
> index 111787e83784..b695b20ffc8a 100644
> --- a/tools/perf/builtin-script.c
> +++ b/tools/perf/builtin-script.c
> @@ -1933,6 +1933,13 @@ static int cleanup_scripting(void)
> return scripting_ops ? scripting_ops->stop_script() : 0;
> }
>
> +static bool filter_cpu(struct perf_sample *sample)
> +{
> + if (cpu_list)
> + return !test_bit(sample->cpu, cpu_bitmap);
> + return false;
> +}
> +
> static int process_sample_event(struct perf_tool *tool,
> union perf_event *event,
> struct perf_sample *sample,
> @@ -1967,7 +1974,7 @@ static int process_sample_event(struct perf_tool *tool,
> if (al.filtered)
> goto out_put;
>
> - if (cpu_list && !test_bit(sample->cpu, cpu_bitmap))
> + if (filter_cpu(sample))
> goto out_put;
>
> if (scripting_ops)
> @@ -2052,9 +2059,11 @@ static int process_comm_event(struct perf_tool *tool,
> sample->tid = event->comm.tid;
> sample->pid = event->comm.pid;
> }
> - perf_sample__fprintf_start(sample, thread, evsel,
> + if (!filter_cpu(sample)) {
> + perf_sample__fprintf_start(sample, thread, evsel,
> PERF_RECORD_COMM, stdout);
> - perf_event__fprintf(event, stdout);
> + perf_event__fprintf(event, stdout);
> + }
> ret = 0;
> out:
> thread__put(thread);
> @@ -2088,9 +2097,11 @@ static int process_namespaces_event(struct perf_tool *tool,
> sample->tid = event->namespaces.tid;
> sample->pid = event->namespaces.pid;
> }
> - perf_sample__fprintf_start(sample, thread, evsel,
> - PERF_RECORD_NAMESPACES, stdout);
> - perf_event__fprintf(event, stdout);
> + if (!filter_cpu(sample)) {
> + perf_sample__fprintf_start(sample, thread, evsel,
> + PERF_RECORD_NAMESPACES, stdout);
> + perf_event__fprintf(event, stdout);
> + }
> ret = 0;
> out:
> thread__put(thread);
> @@ -2122,9 +2133,11 @@ static int process_fork_event(struct perf_tool *tool,
> sample->tid = event->fork.tid;
> sample->pid = event->fork.pid;
> }
> - perf_sample__fprintf_start(sample, thread, evsel,
> - PERF_RECORD_FORK, stdout);
> - perf_event__fprintf(event, stdout);
> + if (!filter_cpu(sample)) {
> + perf_sample__fprintf_start(sample, thread, evsel,
> + PERF_RECORD_FORK, stdout);
> + perf_event__fprintf(event, stdout);
> + }
> thread__put(thread);
>
> return 0;
> @@ -2152,9 +2165,11 @@ static int process_exit_event(struct perf_tool *tool,
> sample->tid = event->fork.tid;
> sample->pid = event->fork.pid;
> }
> - perf_sample__fprintf_start(sample, thread, evsel,
> - PERF_RECORD_EXIT, stdout);
> - perf_event__fprintf(event, stdout);
> + if (!filter_cpu(sample)) {
> + perf_sample__fprintf_start(sample, thread, evsel,
> + PERF_RECORD_EXIT, stdout);
> + perf_event__fprintf(event, stdout);
> + }
>
> if (perf_event__process_exit(tool, event, sample, machine) < 0)
> err = -1;
> @@ -2188,9 +2203,11 @@ static int process_mmap_event(struct perf_tool *tool,
> sample->tid = event->mmap.tid;
> sample->pid = event->mmap.pid;
> }
> - perf_sample__fprintf_start(sample, thread, evsel,
> - PERF_RECORD_MMAP, stdout);
> - perf_event__fprintf(event, stdout);
> + if (!filter_cpu(sample)) {
> + perf_sample__fprintf_start(sample, thread, evsel,
> + PERF_RECORD_MMAP, stdout);
> + perf_event__fprintf(event, stdout);
> + }
> thread__put(thread);
> return 0;
> }
> @@ -2220,9 +2237,11 @@ static int process_mmap2_event(struct perf_tool *tool,
> sample->tid = event->mmap2.tid;
> sample->pid = event->mmap2.pid;
> }
> - perf_sample__fprintf_start(sample, thread, evsel,
> - PERF_RECORD_MMAP2, stdout);
> - perf_event__fprintf(event, stdout);
> + if (!filter_cpu(sample)) {
> + perf_sample__fprintf_start(sample, thread, evsel,
> + PERF_RECORD_MMAP2, stdout);
> + perf_event__fprintf(event, stdout);
> + }
> thread__put(thread);
> return 0;
> }
> @@ -2247,9 +2266,11 @@ static int process_switch_event(struct perf_tool *tool,
> return -1;
> }
>
> - perf_sample__fprintf_start(sample, thread, evsel,
> - PERF_RECORD_SWITCH, stdout);
> - perf_event__fprintf(event, stdout);
> + if (!filter_cpu(sample)) {
> + perf_sample__fprintf_start(sample, thread, evsel,
> + PERF_RECORD_SWITCH, stdout);
> + perf_event__fprintf(event, stdout);
> + }
> thread__put(thread);
> return 0;
> }
> @@ -2270,9 +2291,11 @@ process_lost_event(struct perf_tool *tool,
> if (thread == NULL)
> return -1;
>
> - perf_sample__fprintf_start(sample, thread, evsel,
> - PERF_RECORD_LOST, stdout);
> - perf_event__fprintf(event, stdout);
> + if (!filter_cpu(sample)) {
> + perf_sample__fprintf_start(sample, thread, evsel,
> + PERF_RECORD_LOST, stdout);
> + perf_event__fprintf(event, stdout);
> + }
> thread__put(thread);
> return 0;
> }
> --
> 2.20.1

--

- Arnaldo