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Mon, 01 Dec 2025 08:41:43 -0800 (PST) From: James Clark Date: Mon, 01 Dec 2025 16:41:04 +0000 Subject: [PATCH 1/7] perf tools: Track all user changed config bits Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251201-james-perf-config-bits-v1-1-22ecbbf8007c@linaro.org> References: <20251201-james-perf-config-bits-v1-0-22ecbbf8007c@linaro.org> In-Reply-To: <20251201-james-perf-config-bits-v1-0-22ecbbf8007c@linaro.org> To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , Suzuki K Poulose , Mike Leach , John Garry , Will Deacon , Leo Yan Cc: linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, James Clark X-Mailer: b4 0.14.0 Currently we only track which bits were set by the user in attr->config. But all configN fields should be treated equally as they can all have default and user overridden values. Track them all by making get_config_chgs() generic and calling it once for each config value. Signed-off-by: James Clark --- tools/perf/util/evsel.c | 6 ++- tools/perf/util/evsel_config.h | 6 ++- tools/perf/util/parse-events.c | 89 +++++++++++++++++---------------------= ---- tools/perf/util/pmu.c | 2 +- 4 files changed, 47 insertions(+), 56 deletions(-) diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index aee42666e882..40d68f346007 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -1238,7 +1238,11 @@ static void evsel__apply_config_terms(struct evsel *= evsel, case EVSEL__CONFIG_TERM_AUX_SAMPLE_SIZE: /* Already applied by auxtrace */ break; - case EVSEL__CONFIG_TERM_CFG_CHG: + case EVSEL__CONFIG_TERM_USR_CHG_CONFIG: + case EVSEL__CONFIG_TERM_USR_CHG_CONFIG1: + case EVSEL__CONFIG_TERM_USR_CHG_CONFIG2: + case EVSEL__CONFIG_TERM_USR_CHG_CONFIG3: + case EVSEL__CONFIG_TERM_USR_CHG_CONFIG4: break; case EVSEL__CONFIG_TERM_RATIO_TO_PREV: rtp_buf =3D term->val.str; diff --git a/tools/perf/util/evsel_config.h b/tools/perf/util/evsel_config.h index bcd3a978f0c4..b38190dc5a40 100644 --- a/tools/perf/util/evsel_config.h +++ b/tools/perf/util/evsel_config.h @@ -27,7 +27,11 @@ enum evsel_term_type { EVSEL__CONFIG_TERM_AUX_OUTPUT, EVSEL__CONFIG_TERM_AUX_ACTION, EVSEL__CONFIG_TERM_AUX_SAMPLE_SIZE, - EVSEL__CONFIG_TERM_CFG_CHG, + EVSEL__CONFIG_TERM_USR_CHG_CONFIG, + EVSEL__CONFIG_TERM_USR_CHG_CONFIG1, + EVSEL__CONFIG_TERM_USR_CHG_CONFIG2, + EVSEL__CONFIG_TERM_USR_CHG_CONFIG3, + EVSEL__CONFIG_TERM_USR_CHG_CONFIG4, EVSEL__CONFIG_TERM_RATIO_TO_PREV, }; =20 diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 17c1c36a7bf9..f1cc6e96a371 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -1235,63 +1235,46 @@ do { \ return 0; } =20 +#define ADD_CONFIG_CHG(format_type, term_type, new_term) \ +{ \ + struct parse_events_term *term; \ + u64 bits =3D 0; \ + int type; \ + \ + list_for_each_entry(term, &head_config->terms, list) { \ + if (term->type_term =3D=3D PARSE_EVENTS__TERM_TYPE_USER) { \ + type =3D perf_pmu__format_type(pmu, term->config);\ + if (type !=3D format_type) \ + continue; \ + bits |=3D perf_pmu__format_bits(pmu, term->config); \ + } else if (term->type_term =3D=3D term_type) { \ + bits =3D ~(u64)0; \ + } \ + } \ + \ + if (bits) \ + ADD_CONFIG_TERM_VAL(new_term, cfg_chg, bits, false); \ + return 0; \ +} + /* - * Add EVSEL__CONFIG_TERM_CFG_CHG where cfg_chg will have a bit set for - * each bit of attr->config that the user has changed. + * Add EVSEL__CONFIG_TERM_USR_CFG_CONFIGn where cfg_chg will have a bit se= t for + * each bit of attr->configN that the user has changed. */ -static int get_config_chgs(struct perf_pmu *pmu, struct parse_events_terms= *head_config, +static int get_config_chgs(struct perf_pmu *pmu, + struct parse_events_terms *head_config, struct list_head *head_terms) { - struct parse_events_term *term; - u64 bits =3D 0; - int type; - - list_for_each_entry(term, &head_config->terms, list) { - switch (term->type_term) { - case PARSE_EVENTS__TERM_TYPE_USER: - type =3D perf_pmu__format_type(pmu, term->config); - if (type !=3D PERF_PMU_FORMAT_VALUE_CONFIG) - continue; - bits |=3D perf_pmu__format_bits(pmu, term->config); - break; - case PARSE_EVENTS__TERM_TYPE_CONFIG: - bits =3D ~(u64)0; - break; - case PARSE_EVENTS__TERM_TYPE_CONFIG1: - case PARSE_EVENTS__TERM_TYPE_CONFIG2: - case PARSE_EVENTS__TERM_TYPE_CONFIG3: - case PARSE_EVENTS__TERM_TYPE_CONFIG4: - case PARSE_EVENTS__TERM_TYPE_LEGACY_HARDWARE_CONFIG: - case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE_CONFIG: - case PARSE_EVENTS__TERM_TYPE_NAME: - case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: - case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: - case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: - case PARSE_EVENTS__TERM_TYPE_TIME: - case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: - case PARSE_EVENTS__TERM_TYPE_STACKSIZE: - case PARSE_EVENTS__TERM_TYPE_NOINHERIT: - case PARSE_EVENTS__TERM_TYPE_INHERIT: - case PARSE_EVENTS__TERM_TYPE_MAX_STACK: - case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: - case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: - case PARSE_EVENTS__TERM_TYPE_OVERWRITE: - case PARSE_EVENTS__TERM_TYPE_DRV_CFG: - case PARSE_EVENTS__TERM_TYPE_PERCORE: - case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: - case PARSE_EVENTS__TERM_TYPE_AUX_ACTION: - case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: - case PARSE_EVENTS__TERM_TYPE_METRIC_ID: - case PARSE_EVENTS__TERM_TYPE_RAW: - case PARSE_EVENTS__TERM_TYPE_CPU: - case PARSE_EVENTS__TERM_TYPE_RATIO_TO_PREV: - default: - break; - } - } - - if (bits) - ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits, false); + ADD_CONFIG_CHG(PERF_PMU_FORMAT_VALUE_CONFIG, + PARSE_EVENTS__TERM_TYPE_CONFIG, USR_CHG_CONFIG); + ADD_CONFIG_CHG(PERF_PMU_FORMAT_VALUE_CONFIG1, + PARSE_EVENTS__TERM_TYPE_CONFIG1, USR_CHG_CONFIG1); + ADD_CONFIG_CHG(PERF_PMU_FORMAT_VALUE_CONFIG2, + PARSE_EVENTS__TERM_TYPE_CONFIG2, USR_CHG_CONFIG2); + ADD_CONFIG_CHG(PERF_PMU_FORMAT_VALUE_CONFIG3, + PARSE_EVENTS__TERM_TYPE_CONFIG3, USR_CHG_CONFIG3); + ADD_CONFIG_CHG(PERF_PMU_FORMAT_VALUE_CONFIG4, + PARSE_EVENTS__TERM_TYPE_CONFIG4, USR_CHG_CONFIG4); =20 #undef ADD_CONFIG_TERM return 0; diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 1b7c712d8f99..7a7db31be70d 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -1384,7 +1384,7 @@ void evsel__set_config_if_unset(struct perf_pmu *pmu,= struct evsel *evsel, const char *config_name, u64 val) { u64 user_bits =3D 0, bits; - struct evsel_config_term *term =3D evsel__get_config_term(evsel, CFG_CHG); + struct evsel_config_term *term =3D evsel__get_config_term(evsel, USR_CHG_= CONFIG); =20 if (term) user_bits =3D term->val.cfg_chg; --=20 2.34.1