linux-kernel - [PATCH v2 1/7] perf kwork: Add '--synth task' option for record

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Message-ID: <20220730030335.78203-2-yangjihong1@huawei.com>
Date:   Sat, 30 Jul 2022 11:03:29 +0800
From:   Yang Jihong <yangjihong1@...wei.com>
To:     <peterz@...radead.org>, <mingo@...hat.com>, <acme@...nel.org>,
        <mark.rutland@....com>, <alexander.shishkin@...ux.intel.com>,
        <jolsa@...nel.org>, <namhyung@...nel.org>,
        <colin.i.king@...il.com>, <linux-kernel@...r.kernel.org>,
        <linux-perf-users@...r.kernel.org>
CC:     <pc@...ibm.com>, <yhs@...com>, <andrii.nakryiko@...il.com>,
        <songliubraving@...com>, <yangjihong1@...wei.com>
Subject: [PATCH v2 1/7] perf kwork: Add '--synth task' option for record

Since we don't need user space symbols, add '--synth task' option to skip
costly synthesis.

Suggested-by: Namhyung Kim <namhyung@...nel.org>
Signed-off-by: Yang Jihong <yangjihong1@...wei.com>
---
 tools/perf/builtin-kwork.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/perf/builtin-kwork.c b/tools/perf/builtin-kwork.c
index fb8c63656ad8..ff17711a554a 100644
--- a/tools/perf/builtin-kwork.c
+++ b/tools/perf/builtin-kwork.c
@@ -1631,6 +1631,10 @@ static int perf_kwork__record(struct perf_kwork *kwork,
 		"-R",
 		"-m", "1024",
 		"-c", "1",
+		/*
+		 * Skip synthesis as we do not need user space symbols.
+		 */
+		"--synth", "task",
 	};
 
 	rec_argc = ARRAY_SIZE(record_args) + argc - 1;
-- 
2.30.GIT