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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 14/15] perf test/synthesis: setup global workqueue
Date: Fri, 20 Aug 2021 12:54:00 +0200	[thread overview]
Message-ID: <17b1c402f4a2f82f784ef40de6c7b62d8c6846ed.1629454773.git.rickyman7@gmail.com> (raw)
In-Reply-To: <cover.1629454773.git.rickyman7@gmail.com>

This patch sets up the global workqueue in the synthesis test.
The next patch will use it for synthesis.

Signed-off-by: Riccardo Mancini <rickyman7@gmail.com>
---
 tools/perf/bench/synthesize.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/tools/perf/bench/synthesize.c b/tools/perf/bench/synthesize.c
index 05f7c923c745b4e8..738821113a005a6c 100644
--- a/tools/perf/bench/synthesize.c
+++ b/tools/perf/bench/synthesize.c
@@ -16,6 +16,7 @@
 #include "../util/thread_map.h"
 #include "../util/tool.h"
 #include "../util/util.h"
+#include "../util/workqueue/workqueue.h"
 #include <linux/atomic.h>
 #include <linux/err.h>
 #include <linux/time64.h>
@@ -208,6 +209,7 @@ static int run_multi_threaded(void)
 	};
 	unsigned int nr_threads_synthesize;
 	int err;
+	char errbuf[BUFSIZ];
 
 	if (max_threads == UINT_MAX)
 		max_threads = sysconf(_SC_NPROCESSORS_ONLN);
@@ -219,10 +221,17 @@ static int run_multi_threaded(void)
 	for (nr_threads_synthesize = min_threads;
 	     nr_threads_synthesize <= max_threads;
 	     nr_threads_synthesize++) {
-		if (nr_threads_synthesize == 1)
+		if (nr_threads_synthesize == 1) {
 			perf_set_singlethreaded();
-		else
+		} else {
+			err = setup_global_workqueue(nr_threads_synthesize);
+			if (err) {
+				create_workqueue_strerror(global_wq, errbuf, sizeof(errbuf));
+				pr_err("setup_global_workqueue: %s\n", errbuf);
+				return err;
+			}
 			perf_set_multithreaded();
+		}
 
 		printf("  Number of synthesis threads: %u\n",
 			nr_threads_synthesize);
@@ -230,6 +239,9 @@ static int run_multi_threaded(void)
 		err = do_run_multi_threaded(&target, nr_threads_synthesize);
 		if (err)
 			return err;
+
+		if (nr_threads_synthesize > 1)
+			teardown_global_workqueue();
 	}
 	perf_set_singlethreaded();
 	return 0;
-- 
2.31.1


  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 ` [RFC PATCH v3 12/15] perf record: setup global workqueue Riccardo Mancini
2021-08-20 10:53 ` [RFC PATCH v3 13/15] perf top: " Riccardo Mancini
2021-08-20 10:54 ` Riccardo Mancini [this message]
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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