From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>, Thomas Gleixner <tglx@linutronix.de>
Cc: Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>,
Clark Williams <williams@redhat.com>,
linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
linux-arm-kernel@lists.infradead.org,
Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: [PATCH 02/25] perf: cs-etm: Optimize option setup for CPU-wide sessions
Date: Fri, 21 Jun 2019 14:38:08 -0300 [thread overview]
Message-ID: <20190621173831.13780-3-acme@kernel.org> (raw)
In-Reply-To: <20190621173831.13780-1-acme@kernel.org>
From: Mathieu Poirier <mathieu.poirier@linaro.org>
Call function cs_etm_set_option() once with all relevant options set
rather than multiple times to avoid going through the list of CPU more
than once.
Suggested-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/20190611204528.20093-1-mathieu.poirier@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/arch/arm/util/cs-etm.c | 20 ++++++++------------
1 file changed, 8 insertions(+), 12 deletions(-)
diff --git a/tools/perf/arch/arm/util/cs-etm.c b/tools/perf/arch/arm/util/cs-etm.c
index 279c69caef91..c6f1ab5499b5 100644
--- a/tools/perf/arch/arm/util/cs-etm.c
+++ b/tools/perf/arch/arm/util/cs-etm.c
@@ -162,20 +162,19 @@ static int cs_etm_set_option(struct auxtrace_record *itr,
!cpu_map__has(online_cpus, i))
continue;
- switch (option) {
- case ETM_OPT_CTXTID:
+ if (option & ETM_OPT_CTXTID) {
err = cs_etm_set_context_id(itr, evsel, i);
if (err)
goto out;
- break;
- case ETM_OPT_TS:
+ }
+ if (option & ETM_OPT_TS) {
err = cs_etm_set_timestamp(itr, evsel, i);
if (err)
goto out;
- break;
- default:
- goto out;
}
+ if (option & ~(ETM_OPT_CTXTID | ETM_OPT_TS))
+ /* Nothing else is currently supported */
+ goto out;
}
err = 0;
@@ -398,11 +397,8 @@ static int cs_etm_recording_options(struct auxtrace_record *itr,
if (!cpu_map__empty(cpus)) {
perf_evsel__set_sample_bit(cs_etm_evsel, CPU);
- err = cs_etm_set_option(itr, cs_etm_evsel, ETM_OPT_CTXTID);
- if (err)
- goto out;
-
- err = cs_etm_set_option(itr, cs_etm_evsel, ETM_OPT_TS);
+ err = cs_etm_set_option(itr, cs_etm_evsel,
+ ETM_OPT_CTXTID | ETM_OPT_TS);
if (err)
goto out;
}
--
2.20.1
next prev parent reply other threads:[~2019-06-21 17:38 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-21 17:38 [GIT PULL] perf/core improvements and fixes Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 01/25] perf tests arm64: Compile tests unconditionally Arnaldo Carvalho de Melo
2019-06-21 17:38 ` Arnaldo Carvalho de Melo [this message]
2019-06-21 17:38 ` [PATCH 03/25] perf intel-pt: Add new packets for PEBS via PT Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 04/25] perf intel-pt: Add Intel PT packet decoder test Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 05/25] perf intel-pt: Add decoder support for PEBS via PT Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 06/25] perf intel-pt: Prepare to synthesize PEBS samples Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 07/25] perf intel-pt: Factor out common sample preparation for re-use Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 08/25] perf intel-pt: Synthesize PEBS sample basic information Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 09/25] perf intel-pt: Add gp registers to synthesized PEBS sample Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 10/25] perf intel-pt: Add XMM " Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 11/25] perf intel-pt: Add LBR information " Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 12/25] perf intel-pt: Add memory " Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 13/25] perf intel-pt: Add callchain " Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 14/25] tools build: Check if gettid() is available before providing helper Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 15/25] perf trace: Fix exclusion of not available syscall names from selector list Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 16/25] perf trace: Streamline validation of select syscall names list Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 17/25] tools build feature tests: Add missing SPDX headers Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 18/25] perf " Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 19/25] perf pmu: Fix uncore PMU alias list for ARM64 Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 20/25] perf trace: Fixup pointer arithmetic when consuming augmented syscall args Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 21/25] perf evsel: Make perf_evsel__name() accept a NULL argument Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 22/25] perf tools: Don't hardcode host include path for libslang Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 23/25] tools build: Add test to check if slang.h is in /usr/include/slang/ Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 24/25] perf build: Handle slang being in /usr/include and " Arnaldo Carvalho de Melo
2019-06-21 17:38 ` [PATCH 25/25] tools build: Fix the zstd test in the test-all.c common case feature test Arnaldo Carvalho de Melo
2019-06-22 6:28 ` [GIT PULL] perf/core improvements and fixes Ingo Molnar
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