From: Riccardo Mancini <rickyman7@gmail.com>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Ian Rogers <irogers@google.com>,
Namhyung Kim <namhyung@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Mark Rutland <mark.rutland@arm.com>, Jiri Olsa <jolsa@redhat.com>,
linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>,
Riccardo Mancini <rickyman7@gmail.com>
Subject: [RFC PATCH v3 12/15] perf record: setup global workqueue
Date: Fri, 20 Aug 2021 12:53:58 +0200 [thread overview]
Message-ID: <3666b3e081d50de57d8669530eec59ed8be0c841.1629454773.git.rickyman7@gmail.com> (raw)
In-Reply-To: <cover.1629454773.git.rickyman7@gmail.com>
This patch initializes the global workqueue in perf-record if
nr_threads_synthesize is set.
This patch is a preparation for using the global_workqueue in
synthesize.
Signed-off-by: Riccardo Mancini <rickyman7@gmail.com>
---
tools/perf/builtin-record.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 548c1dbde6c52ed6..4d7b610b1d0bb9af 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -49,6 +49,7 @@
#include "util/clockid.h"
#include "util/pmu-hybrid.h"
#include "util/evlist-hybrid.h"
+#include "util/workqueue/workqueue.h"
#include "asm/bug.h"
#include "perf.h"
@@ -2894,7 +2895,21 @@ int cmd_record(int argc, const char **argv)
rec->opts.comp_level = comp_level_max;
pr_debug("comp level: %d\n", rec->opts.comp_level);
+ if (rec->opts.nr_threads_synthesize == UINT_MAX)
+ rec->opts.nr_threads_synthesize = sysconf(_SC_NPROCESSORS_ONLN);
+ if (rec->opts.nr_threads_synthesize > 1) {
+ err = setup_global_workqueue(rec->opts.nr_threads_synthesize);
+ if (err) {
+ create_workqueue_strerror(global_wq, errbuf, sizeof(errbuf));
+ pr_err("setup_global_workqueue: %s\n", errbuf);
+ goto out;
+ }
+ }
+
err = __cmd_record(&record, argc, argv);
+
+ if (rec->opts.nr_threads_synthesize > 1)
+ teardown_global_workqueue();
out:
bitmap_free(rec->affinity_mask.bits);
evlist__delete(rec->evlist);
--
2.31.1
next prev parent reply other threads:[~2021-08-20 10:55 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-20 10:53 [RFC PATCH v3 00/15] perf: add workqueue library and use it in synthetic-events Riccardo Mancini
2021-08-20 10:53 ` [RFC PATCH v3 01/15] perf workqueue: threadpool creation and destruction Riccardo Mancini
2021-08-20 10:53 ` [RFC PATCH v3 02/15] perf tests: add test for workqueue Riccardo Mancini
2021-08-20 10:53 ` [RFC PATCH v3 03/15] perf workqueue: add threadpool start and stop functions Riccardo Mancini
2021-08-20 10:53 ` [RFC PATCH v3 04/15] perf workqueue: add threadpool execute and wait functions Riccardo Mancini
2021-08-20 10:53 ` [RFC PATCH v3 05/15] tools: add sparse context/locking annotations in compiler-types.h Riccardo Mancini
2021-08-20 10:53 ` [RFC PATCH v3 06/15] perf workqueue: introduce workqueue struct Riccardo Mancini
2021-08-24 19:27 ` Namhyung Kim
2021-08-31 16:13 ` Riccardo Mancini
2021-08-20 10:53 ` [RFC PATCH v3 07/15] perf workqueue: implement worker thread and management Riccardo Mancini
2021-08-30 7:22 ` Jiri Olsa
2021-08-20 10:53 ` [RFC PATCH v3 08/15] perf workqueue: add queue_work and flush_workqueue functions Riccardo Mancini
2021-08-24 19:40 ` Namhyung Kim
2021-08-31 16:23 ` Riccardo Mancini
2021-08-20 10:53 ` [RFC PATCH v3 09/15] perf workqueue: spinup threads when needed Riccardo Mancini
2021-08-20 10:53 ` [RFC PATCH v3 10/15] perf workqueue: create global workqueue Riccardo Mancini
2021-08-20 10:53 ` [RFC PATCH v3 11/15] perf workqueue: add utility to execute a for loop in parallel Riccardo Mancini
2021-08-20 10:53 ` Riccardo Mancini [this message]
2021-08-20 10:53 ` [RFC PATCH v3 13/15] perf top: setup global workqueue Riccardo Mancini
2021-08-20 10:54 ` [RFC PATCH v3 14/15] perf test/synthesis: " Riccardo Mancini
2021-08-20 10:54 ` [RFC PATCH v3 15/15] perf synthetic-events: use workqueue parallel_for Riccardo Mancini
2021-08-29 21:59 ` [RFC PATCH v3 00/15] perf: add workqueue library and use it in synthetic-events Jiri Olsa
2021-08-31 15:46 ` Jiri Olsa
2021-08-31 16:57 ` Riccardo Mancini
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