From: Ian Rogers <irogers@google.com>
To: Adrian Hunter <adrian.hunter@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>,
Jiri Olsa <jolsa@redhat.com>,
Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>,
Namhyung Kim <namhyung@kernel.org>, Leo Yan <leo.yan@linaro.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH V1 15/23] perf intel-pt: Use evlist__add_system_wide_dummy() for switch tracking
Date: Thu, 5 May 2022 16:58:02 -0700 [thread overview]
Message-ID: <CAP-5=fUmXU7smPbGvK8Q1RxfZ-7C+WbUK_Xa9yz3WgQdk9YdPw@mail.gmail.com> (raw)
In-Reply-To: <20220505165639.361733-16-adrian.hunter@intel.com>
On Thu, May 5, 2022 at 9:57 AM Adrian Hunter <adrian.hunter@intel.com> wrote:
>
> Use evlist__add_system_wide_dummy() for switch tracking in preparation for
> allowing system-wide events on all CPUs while the user requested events are
> on only user requested CPUs.
>
> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Delta function names.
Acked-by: Ian Rogers <irogers@google.com>
Thanks,
Ian
> ---
> tools/perf/arch/x86/util/intel-pt.c | 13 +++----------
> 1 file changed, 3 insertions(+), 10 deletions(-)
>
> diff --git a/tools/perf/arch/x86/util/intel-pt.c b/tools/perf/arch/x86/util/intel-pt.c
> index 2eaac4638aab..e45d64dec57c 100644
> --- a/tools/perf/arch/x86/util/intel-pt.c
> +++ b/tools/perf/arch/x86/util/intel-pt.c
> @@ -811,18 +811,11 @@ static int intel_pt_recording_options(struct auxtrace_record *itr,
> if (!cpu_wide && perf_can_record_cpu_wide()) {
> struct evsel *switch_evsel;
>
> - err = parse_events(evlist, "dummy:u", NULL);
> - if (err)
> - return err;
> + switch_evsel = evlist__add_system_wide_dummy(evlist);
> + if (!switch_evsel)
> + return -ENOMEM;
>
> - switch_evsel = evlist__last(evlist);
> -
> - switch_evsel->core.attr.freq = 0;
> - switch_evsel->core.attr.sample_period = 1;
> switch_evsel->core.attr.context_switch = 1;
> -
> - switch_evsel->core.system_wide = true;
> - switch_evsel->no_aux_samples = true;
> switch_evsel->immediate = true;
>
> evsel__set_sample_bit(switch_evsel, TID);
> --
> 2.25.1
>
next prev parent reply other threads:[~2022-05-06 0:01 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-05 16:56 [PATCH V1 00/23] perf intel-pt: Better support for perf record --cpu Adrian Hunter
2022-05-05 16:56 ` [PATCH V1 01/23] perf intel-pt: Add a test for system-wide side band Adrian Hunter
2022-05-05 22:37 ` Ian Rogers
2022-05-05 16:56 ` [PATCH V1 02/23] libperf evsel: Add perf_evsel__enable_thread() Adrian Hunter
2022-05-05 22:48 ` Ian Rogers
2022-05-06 7:18 ` Adrian Hunter
2022-05-05 16:56 ` [PATCH V1 03/23] perf evlist: Use libperf functions in evlist__enable_event_idx() Adrian Hunter
2022-05-05 22:58 ` Ian Rogers
2022-05-05 16:56 ` [PATCH V1 04/23] perf auxtrace: Move evlist__enable_event_idx() to auxtrace.c Adrian Hunter
2022-05-05 23:06 ` Ian Rogers
2022-05-05 16:56 ` [PATCH V1 05/23] perf auxtrace: Do not mix up mmap idx Adrian Hunter
2022-05-05 23:08 ` Ian Rogers
2022-05-05 16:56 ` [PATCH V1 06/23] libperf evlist: Remove ->idx() per_cpu parameter Adrian Hunter
2022-05-05 23:08 ` Ian Rogers
2022-05-05 16:56 ` [PATCH V1 07/23] libperf evlist: Move ->idx() into mmap_per_evsel() Adrian Hunter
2022-05-05 23:09 ` Ian Rogers
2022-05-05 16:56 ` [PATCH V1 08/23] libperf evlist: Add evsel as a parameter to ->idx() Adrian Hunter
2022-05-05 23:27 ` Ian Rogers
2022-05-05 16:56 ` [PATCH V1 09/23] perf auxtrace: Record whether an auxtrace mmap is needed Adrian Hunter
2022-05-05 23:28 ` Ian Rogers
2022-05-05 16:56 ` [PATCH V1 10/23] perf auxtrace: Add mmap_needed to auxtrace_mmap_params Adrian Hunter
2022-05-05 23:40 ` Ian Rogers
2022-05-05 16:56 ` [PATCH V1 11/23] perf auxtrace: Remove auxtrace_mmap_params__set_idx() per_cpu parameter Adrian Hunter
2022-05-05 22:13 ` Ian Rogers
2022-05-05 16:56 ` [PATCH V1 12/23] perf evlist: Factor out evlist__dummy_event() Adrian Hunter
2022-05-05 23:42 ` Ian Rogers
2022-05-05 16:56 ` [PATCH V1 13/23] perf evlist: Add evlist__add_system_wide_dummy() Adrian Hunter
2022-05-05 23:56 ` Ian Rogers
2022-05-06 8:14 ` Adrian Hunter
2022-05-06 8:34 ` Ian Rogers
2022-05-06 9:27 ` Adrian Hunter
2022-05-05 16:56 ` [PATCH V1 14/23] perf record: Use evlist__add_system_wide_dummy() in record__config_text_poke() Adrian Hunter
2022-05-05 23:57 ` Ian Rogers
2022-05-05 16:56 ` [PATCH V1 15/23] perf intel-pt: Use evlist__add_system_wide_dummy() for switch tracking Adrian Hunter
2022-05-05 23:58 ` Ian Rogers [this message]
2022-05-05 16:56 ` [PATCH V1 16/23] perf intel-pt: Track sideband system-wide when needed Adrian Hunter
2022-05-06 0:01 ` Ian Rogers
2022-05-05 16:56 ` [PATCH V1 17/23] perf tools: Allow all_cpus to be a superset of user_requested_cpus Adrian Hunter
2022-05-05 16:56 ` [PATCH V1 18/23] libperf evlist: Allow mixing per-thread and per-cpu mmaps Adrian Hunter
2022-05-06 0:09 ` Ian Rogers
2022-05-05 16:56 ` [PATCH V1 19/23] libperf evlist: Check nr_mmaps is correct Adrian Hunter
2022-05-06 0:13 ` Ian Rogers
2022-05-05 16:56 ` [PATCH V1 20/23] perf stat: Add requires_cpu flag for uncore Adrian Hunter
2022-05-06 0:50 ` Ian Rogers
2022-05-06 0:52 ` Ian Rogers
2022-05-05 16:56 ` [PATCH V1 21/23] libperf evsel: Add comments for booleans Adrian Hunter
2022-05-06 0:55 ` Ian Rogers
2022-05-05 16:56 ` [PATCH V1 22/23] perf tools: Allow system-wide events to keep their own CPUs Adrian Hunter
2022-05-06 1:00 ` Ian Rogers
2022-05-05 16:56 ` [PATCH V1 23/23] perf tools: Allow system-wide events to keep their own threads Adrian Hunter
2022-05-06 0:51 ` Ian Rogers
2022-05-06 1:06 ` [PATCH V1 00/23] perf intel-pt: Better support for perf record --cpu Ian Rogers
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