linux-kernel - [PATCH v1] perf trace: Enable ignore_missing

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Message-Id: <20211123074018.11406-1-ligang.bdlg@bytedance.com>
Date:   Tue, 23 Nov 2021 15:40:17 +0800
From:   Gang Li <ligang.bdlg@...edance.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>
Cc:     Gang Li <ligang.bdlg@...edance.com>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1] perf trace: Enable ignore_missing_thread for trace

perf already support ignore_missing_thread for -u/-p, but not yet
applied to `perf trace`. This patch enable ignore_missing_thread
for `perf trace`.

ref:
Link: http://lkml.kernel.org/r/1481538943-21874-6-git-send-email-jolsa@kernel.org
Link: http://lkml.kernel.org/r/1513148513-6974-1-git-send-email-zhangmengting@huawei.com
Signed-off-by: Gang Li <ligang.bdlg@...edance.com>
---
 tools/perf/builtin-trace.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 0b52e08e558e..94d62a92f1a1 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -3950,6 +3950,9 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
 		evlist__add(evlist, pgfault_min);
 	}
 
+	/* Enable ignoring missing threads when -u/-p option is defined. */
+	trace->opts.ignore_missing_thread = trace->opts.target.uid != UINT_MAX || trace->opts.target.pid;
+
 	if (trace->sched &&
 	    evlist__add_newtp(evlist, "sched", "sched_stat_runtime", trace__sched_stat_runtime))
 		goto out_error_sched_stat_runtime;
-- 
2.20.1