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Message-ID: <CAP-5=fUuFAj_wtJ+PMq8iS3gs5Z8XErYdcBeYnEMU_wSb3UAkw@mail.gmail.com>
Date: Wed, 14 Jan 2026 08:51:44 -0800
From: Ian Rogers <irogers@...gle.com>
To: James Clark <james.clark@...aro.org>
Cc: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>,
Adrian Hunter <adrian.hunter@...el.com>, Suzuki K Poulose <suzuki.poulose@....com>,
Mike Leach <mike.leach@...aro.org>, John Garry <john.g.garry@...cle.com>,
Will Deacon <will@...nel.org>, Leo Yan <leo.yan@...ux.dev>, linux-perf-users@...r.kernel.org,
linux-kernel@...r.kernel.org, coresight@...ts.linaro.org,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v5 02/14] perf evsel: Refactor evsel__set_config_if_unset()
arguments
On Wed, Jan 14, 2026 at 7:57 AM James Clark <james.clark@...aro.org> wrote:
>
> Make the evsel argument first to match the other evsel__* functions
> and remove the redundant pmu argument, which can be accessed via evsel.
>
> Signed-off-by: James Clark <james.clark@...aro.org>
Reviewed-by: Ian Rogers <irogers@...gle.com>
Thanks,
Ian
> ---
> tools/perf/arch/arm/util/cs-etm.c | 9 +++------
> tools/perf/arch/arm64/util/arm-spe.c | 2 +-
> tools/perf/arch/x86/util/intel-pt.c | 3 +--
> tools/perf/util/evsel.h | 4 ++--
> tools/perf/util/pmu.c | 6 +++---
> 5 files changed, 10 insertions(+), 14 deletions(-)
>
> diff --git a/tools/perf/arch/arm/util/cs-etm.c b/tools/perf/arch/arm/util/cs-etm.c
> index ea891d12f8f4..c28208361d91 100644
> --- a/tools/perf/arch/arm/util/cs-etm.c
> +++ b/tools/perf/arch/arm/util/cs-etm.c
> @@ -441,10 +441,8 @@ static int cs_etm_recording_options(struct auxtrace_record *itr,
> * when a context switch happened.
> */
> if (!perf_cpu_map__is_any_cpu_or_is_empty(cpus)) {
> - evsel__set_config_if_unset(cs_etm_pmu, cs_etm_evsel,
> - "timestamp", 1);
> - evsel__set_config_if_unset(cs_etm_pmu, cs_etm_evsel,
> - "contextid", 1);
> + evsel__set_config_if_unset(cs_etm_evsel, "timestamp", 1);
> + evsel__set_config_if_unset(cs_etm_evsel, "contextid", 1);
> }
>
> /*
> @@ -453,8 +451,7 @@ static int cs_etm_recording_options(struct auxtrace_record *itr,
> * timestamp tracing.
> */
> if (opts->sample_time_set)
> - evsel__set_config_if_unset(cs_etm_pmu, cs_etm_evsel,
> - "timestamp", 1);
> + evsel__set_config_if_unset(cs_etm_evsel, "timestamp", 1);
>
> /* Add dummy event to keep tracking */
> err = parse_event(evlist, "dummy:u");
> diff --git a/tools/perf/arch/arm64/util/arm-spe.c b/tools/perf/arch/arm64/util/arm-spe.c
> index d5ec1408d0ae..51014f8bff97 100644
> --- a/tools/perf/arch/arm64/util/arm-spe.c
> +++ b/tools/perf/arch/arm64/util/arm-spe.c
> @@ -274,7 +274,7 @@ static void arm_spe_setup_evsel(struct evsel *evsel, struct perf_cpu_map *cpus)
> */
> if (!perf_cpu_map__is_any_cpu_or_is_empty(cpus)) {
> evsel__set_sample_bit(evsel, CPU);
> - evsel__set_config_if_unset(evsel->pmu, evsel, "ts_enable", 1);
> + evsel__set_config_if_unset(evsel, "ts_enable", 1);
> }
>
> /*
> diff --git a/tools/perf/arch/x86/util/intel-pt.c b/tools/perf/arch/x86/util/intel-pt.c
> index b394ad9cc635..c131a727774f 100644
> --- a/tools/perf/arch/x86/util/intel-pt.c
> +++ b/tools/perf/arch/x86/util/intel-pt.c
> @@ -664,8 +664,7 @@ static int intel_pt_recording_options(struct auxtrace_record *itr,
> return 0;
>
> if (opts->auxtrace_sample_mode)
> - evsel__set_config_if_unset(intel_pt_pmu, intel_pt_evsel,
> - "psb_period", 0);
> + evsel__set_config_if_unset(intel_pt_evsel, "psb_period", 0);
>
> err = intel_pt_validate_config(intel_pt_pmu, intel_pt_evsel);
> if (err)
> diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
> index a08130ff2e47..2cf87bc67df7 100644
> --- a/tools/perf/util/evsel.h
> +++ b/tools/perf/util/evsel.h
> @@ -575,8 +575,8 @@ void evsel__uniquify_counter(struct evsel *counter);
> ((((src) >> (pos)) & ((1ull << (size)) - 1)) << (63 - ((pos) + (size) - 1)))
>
> u64 evsel__bitfield_swap_branch_flags(u64 value);
> -void evsel__set_config_if_unset(struct perf_pmu *pmu, struct evsel *evsel,
> - const char *config_name, u64 val);
> +void evsel__set_config_if_unset(struct evsel *evsel, const char *config_name,
> + u64 val);
>
> bool evsel__is_offcpu_event(struct evsel *evsel);
>
> diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
> index 956ea273c2c7..e87c12946d71 100644
> --- a/tools/perf/util/pmu.c
> +++ b/tools/perf/util/pmu.c
> @@ -1382,8 +1382,8 @@ bool evsel__is_aux_event(const struct evsel *evsel)
> * something to true, pass 1 for val rather than a pre shifted value.
> */
> #define field_prep(_mask, _val) (((_val) << (ffsll(_mask) - 1)) & (_mask))
> -void evsel__set_config_if_unset(struct perf_pmu *pmu, struct evsel *evsel,
> - const char *config_name, u64 val)
> +void evsel__set_config_if_unset(struct evsel *evsel, const char *config_name,
> + u64 val)
> {
> u64 user_bits = 0, bits;
> struct evsel_config_term *term = evsel__get_config_term(evsel, CFG_CHG);
> @@ -1391,7 +1391,7 @@ void evsel__set_config_if_unset(struct perf_pmu *pmu, struct evsel *evsel,
> if (term)
> user_bits = term->val.cfg_chg;
>
> - bits = perf_pmu__format_bits(pmu, config_name);
> + bits = perf_pmu__format_bits(evsel->pmu, config_name);
>
> /* Do nothing if the user changed the value */
> if (bits & user_bits)
>
> --
> 2.34.1
>
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