From: "tip-bot2 for Jiri Olsa" <tip-bot2@linutronix.de>
To: linux-tip-commits@vger.kernel.org
Cc: Jann Horn <jannh@google.com>, Jiri Olsa <jolsa@kernel.org>,
Andi Kleen <ak@linux.intel.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Michael Petlan <mpetlan@redhat.com>,
Namhyung Kim <namhyung@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Arnaldo Carvalho de Melo <acme@redhat.com>, x86 <x86@kernel.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: [tip: perf/core] libperf: Setup initial evlist::all_cpus value
Date: Mon, 20 Jan 2020 08:27:13 -0000 [thread overview]
Message-ID: <157950883357.396.5010464056338949713.tip-bot2@tip-bot2> (raw)
In-Reply-To: <20200110151537.153012-1-jolsa@kernel.org>
The following commit has been merged into the perf/core branch of tip:
Commit-ID: cb71f7d43ece3d5a4f400f510c61b2ec7c9ce9a1
Gitweb: https://git.kernel.org/tip/cb71f7d43ece3d5a4f400f510c61b2ec7c9ce9a1
Author: Jiri Olsa <jolsa@kernel.org>
AuthorDate: Fri, 10 Jan 2020 16:15:37 +01:00
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitterDate: Tue, 14 Jan 2020 12:02:19 -03:00
libperf: Setup initial evlist::all_cpus value
Jann Horn reported crash in perf ftrace because evlist::all_cpus isn't
initialized if there's evlist without events, which is the case for perf
ftrace.
Adding initial initialization of evlist::all_cpus from given cpus,
regardless of events in the evlist.
Fixes: 7736627b865d ("perf stat: Use affinity for closing file descriptors")
Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Andi Kleen <ak@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200110151537.153012-1-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/lib/perf/evlist.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/tools/lib/perf/evlist.c b/tools/lib/perf/evlist.c
index ae9e65a..5b9f2ca 100644
--- a/tools/lib/perf/evlist.c
+++ b/tools/lib/perf/evlist.c
@@ -164,6 +164,9 @@ void perf_evlist__set_maps(struct perf_evlist *evlist,
evlist->threads = perf_thread_map__get(threads);
}
+ if (!evlist->all_cpus && cpus)
+ evlist->all_cpus = perf_cpu_map__get(cpus);
+
perf_evlist__propagate_maps(evlist);
}
prev parent reply other threads:[~2020-01-20 8:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-10 15:15 [PATCH] perf tools: Setup initial evlist::all_cpus value Jiri Olsa
2020-01-10 17:31 ` Andi Kleen
2020-01-20 8:27 ` tip-bot2 for Jiri Olsa [this message]
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