From ceb13bfc01d55388092c00796a5b76aa3dfa483a Mon Sep 17 00:00:00 2001
From: Namhyung Kim <namhyung@kernel.org>
Date: Tue, 2 Aug 2022 12:10:03 -0700
Subject: perf lock: Add --map-nr-entries option

The --map-nr-entries option is to control number of max entries in the
perf lock contention BPF maps.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Blake Jones <blakejones@google.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Waiman Long <longman@redhat.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20220802191004.347740-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/Documentation/perf-lock.txt | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'tools/perf/Documentation/perf-lock.txt')

diff --git a/tools/perf/Documentation/perf-lock.txt b/tools/perf/Documentation/perf-lock.txt
index 7949d2e6891b..193c5d8b8db9 100644
--- a/tools/perf/Documentation/perf-lock.txt
+++ b/tools/perf/Documentation/perf-lock.txt
@@ -145,6 +145,9 @@ CONTENTION OPTIONS
 --tid=::
         Record events on existing thread ID (comma separated list).
 
+--map-nr-entries::
+	Maximum number of BPF map entries (default: 10240).
+
 
 SEE ALSO
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