linux-kernel - Re: [PATCH V2 09/23] perf auxtrace: Record whether an auxtrace mmap is needed

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Message-ID: <YnqgjdB+U3Oluv54@kernel.org>
Date:   Tue, 10 May 2022 14:27:41 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Adrian Hunter <adrian.hunter@...el.com>
Cc:     Jiri Olsa <jolsa@...hat.com>, Ian Rogers <irogers@...gle.com>,
        Alexey Bayduraev <alexey.v.bayduraev@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Leo Yan <leo.yan@...aro.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2 09/23] perf auxtrace: Record whether an auxtrace mmap
 is needed

Em Fri, May 06, 2022 at 03:25:47PM +0300, Adrian Hunter escreveu:
> Add a flag needs_auxtrace_mmap to record whether an auxtrace mmap is
> needed, in preparation for correctly determining whether or not an
> auxtrace mmap is needed.

Thanks, applied.

- Arnaldo

> 
> Acked-by: Ian Rogers <irogers@...gle.com>
> Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
> ---
>  tools/perf/arch/arm/util/cs-etm.c    | 1 +
>  tools/perf/arch/arm64/util/arm-spe.c | 1 +
>  tools/perf/arch/s390/util/auxtrace.c | 1 +
>  tools/perf/arch/x86/util/intel-bts.c | 1 +
>  tools/perf/arch/x86/util/intel-pt.c  | 1 +
>  tools/perf/util/evsel.h              | 1 +
>  6 files changed, 6 insertions(+)
> 
> diff --git a/tools/perf/arch/arm/util/cs-etm.c b/tools/perf/arch/arm/util/cs-etm.c
> index 11c71aa219f7..1b54638d53b0 100644
> --- a/tools/perf/arch/arm/util/cs-etm.c
> +++ b/tools/perf/arch/arm/util/cs-etm.c
> @@ -319,6 +319,7 @@ static int cs_etm_recording_options(struct auxtrace_record *itr,
>  			}
>  			evsel->core.attr.freq = 0;
>  			evsel->core.attr.sample_period = 1;
> +			evsel->needs_auxtrace_mmap = true;
>  			cs_etm_evsel = evsel;
>  			opts->full_auxtrace = true;
>  		}
> diff --git a/tools/perf/arch/arm64/util/arm-spe.c b/tools/perf/arch/arm64/util/arm-spe.c
> index e8b577d33e53..6f4db2ac5420 100644
> --- a/tools/perf/arch/arm64/util/arm-spe.c
> +++ b/tools/perf/arch/arm64/util/arm-spe.c
> @@ -160,6 +160,7 @@ static int arm_spe_recording_options(struct auxtrace_record *itr,
>  			}
>  			evsel->core.attr.freq = 0;
>  			evsel->core.attr.sample_period = arm_spe_pmu->default_config->sample_period;
> +			evsel->needs_auxtrace_mmap = true;
>  			arm_spe_evsel = evsel;
>  			opts->full_auxtrace = true;
>  		}
> diff --git a/tools/perf/arch/s390/util/auxtrace.c b/tools/perf/arch/s390/util/auxtrace.c
> index 0db5c58c98e8..5068baa3e092 100644
> --- a/tools/perf/arch/s390/util/auxtrace.c
> +++ b/tools/perf/arch/s390/util/auxtrace.c
> @@ -98,6 +98,7 @@ struct auxtrace_record *auxtrace_record__init(struct evlist *evlist,
>  	evlist__for_each_entry(evlist, pos) {
>  		if (pos->core.attr.config == PERF_EVENT_CPUM_SF_DIAG) {
>  			diagnose = 1;
> +			pos->needs_auxtrace_mmap = true;
>  			break;
>  		}
>  	}
> diff --git a/tools/perf/arch/x86/util/intel-bts.c b/tools/perf/arch/x86/util/intel-bts.c
> index d68a0f48e41e..bcccfbade5c6 100644
> --- a/tools/perf/arch/x86/util/intel-bts.c
> +++ b/tools/perf/arch/x86/util/intel-bts.c
> @@ -129,6 +129,7 @@ static int intel_bts_recording_options(struct auxtrace_record *itr,
>  			}
>  			evsel->core.attr.freq = 0;
>  			evsel->core.attr.sample_period = 1;
> +			evsel->needs_auxtrace_mmap = true;
>  			intel_bts_evsel = evsel;
>  			opts->full_auxtrace = true;
>  		}
> diff --git a/tools/perf/arch/x86/util/intel-pt.c b/tools/perf/arch/x86/util/intel-pt.c
> index 38ec2666ec12..2eaac4638aab 100644
> --- a/tools/perf/arch/x86/util/intel-pt.c
> +++ b/tools/perf/arch/x86/util/intel-pt.c
> @@ -649,6 +649,7 @@ static int intel_pt_recording_options(struct auxtrace_record *itr,
>  			evsel->core.attr.freq = 0;
>  			evsel->core.attr.sample_period = 1;
>  			evsel->no_aux_samples = true;
> +			evsel->needs_auxtrace_mmap = true;
>  			intel_pt_evsel = evsel;
>  			opts->full_auxtrace = true;
>  		}
> diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
> index 45d674812239..544fbed98df1 100644
> --- a/tools/perf/util/evsel.h
> +++ b/tools/perf/util/evsel.h
> @@ -124,6 +124,7 @@ struct evsel {
>  	bool			merged_stat;
>  	bool			reset_group;
>  	bool			errored;
> +	bool			needs_auxtrace_mmap;
>  	struct hashmap		*per_pkg_mask;
>  	int			err;
>  	struct {
> -- 
> 2.25.1

-- 

- Arnaldo