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From: Leo Yan <leo.yan@linaro.org>
To: Arnaldo Carvalho de Melo <acme@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	Mark Rutland <mark.rutland@arm.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
	Adrian Hunter <adrian.hunter@intel.com>,
	Andi Kleen <ak@linux.intel.com>, Ian Rogers <irogers@google.com>,
	Nick Desaulniers <ndesaulniers@google.com>,
	"Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>,
	Kemeng Shi <shikemeng@huawei.com>,
	James Clark <james.clark@arm.com>, Wei Li <liwei391@huawei.com>,
	Al Grant <Al.Grant@arm.com>, Will Deacon <will@kernel.org>,
	Mathieu Poirier <mathieu.poirier@linaro.org>,
	Mike Leach <mike.leach@linaro.org>,
	linux-kernel@vger.kernel.org
Cc: Leo Yan <leo.yan@linaro.org>
Subject: [PATCH v2 04/14] perf mem: Only initialize memory event for recording
Date: Tue,  1 Sep 2020 09:38:05 +0100	[thread overview]
Message-ID: <20200901083815.13755-5-leo.yan@linaro.org> (raw)
In-Reply-To: <20200901083815.13755-1-leo.yan@linaro.org>

It's needless to initialize memory events for perf reporting, so only
initialize memory event for perf recording.  This change allows to parse
perf data on cross platforms, e.g. perf tool can output reports even the
machine doesn't enable any memory events.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
---
 tools/perf/builtin-mem.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c
index 9fd730019e45..b9432ee27754 100644
--- a/tools/perf/builtin-mem.c
+++ b/tools/perf/builtin-mem.c
@@ -78,6 +78,11 @@ static int __cmd_record(int argc, const char **argv, struct perf_mem *mem)
 	OPT_END()
 	};
 
+	if (perf_mem_events__init()) {
+		pr_err("failed: memory events not supported\n");
+		return -1;
+	}
+
 	argc = parse_options(argc, argv, options, record_mem_usage,
 			     PARSE_OPT_KEEP_UNKNOWN);
 
@@ -439,11 +444,6 @@ int cmd_mem(int argc, const char **argv)
 		NULL
 	};
 
-	if (perf_mem_events__init()) {
-		pr_err("failed: memory events not supported\n");
-		return -1;
-	}
-
 	argc = parse_options_subcommand(argc, argv, mem_options, mem_subcommands,
 					mem_usage, PARSE_OPT_KEEP_UNKNOWN);
 
-- 
2.20.1


  parent reply	other threads:[~2020-09-01  8:39 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-01  8:38 [PATCH v2 00/14] perf mem: Support AUX trace and Arm SPE Leo Yan
2020-09-01  8:38 ` [PATCH v2 01/14] perf mem: Search event name with more flexible path Leo Yan
2020-09-03 13:50   ` Jiri Olsa
2020-09-01  8:38 ` [PATCH v2 02/14] perf mem: Introduce weak function perf_mem_events__ptr() Leo Yan
2020-09-03 13:50   ` Jiri Olsa
2020-09-04  0:34     ` Leo Yan
2020-09-04 15:52       ` Jiri Olsa
2020-09-07  8:17         ` Leo Yan
2020-09-01  8:38 ` [PATCH v2 03/14] perf mem: Support new memory event PERF_MEM_EVENTS__LOAD_STORE Leo Yan
2020-09-01  8:38 ` Leo Yan [this message]
2020-09-01  8:38 ` [PATCH v2 05/14] perf auxtrace: Add option '-M' for memory events Leo Yan
2020-09-01  8:38 ` [PATCH v2 06/14] perf mem: Support AUX trace Leo Yan
2020-09-01  8:38 ` [PATCH v2 07/14] perf mem: Support Arm SPE events Leo Yan
2020-09-01  8:38 ` [PATCH v2 08/14] perf arm-spe: Enable attribution PERF_SAMPLE_DATA_SRC Leo Yan
2020-09-01  8:38 ` [PATCH v2 09/14] perf arm-spe: Save memory addresses in packet Leo Yan
2020-09-01  8:38 ` [PATCH v2 10/14] perf arm-spe: Store operation types " Leo Yan
2020-09-01  8:38 ` [PATCH v2 11/14] perf arm-spe: Fill address info for samples Leo Yan
2020-09-01  8:38 ` [PATCH v2 12/14] perf arm-spe: Synthesize memory event Leo Yan
2020-09-01  8:38 ` [PATCH v2 13/14] perf arm-spe: Set sample's data source field Leo Yan
2020-09-01  8:38 ` [PATCH v2 14/14] perf mem: Document options introduced by Arm SPE Leo Yan

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