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-rw-r--r--tools/perf/Documentation/perf-top.txt8
1 files changed, 5 insertions, 3 deletions
diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt
index 785b9fc32a46..1f9687663f2a 100644
--- a/tools/perf/Documentation/perf-top.txt
+++ b/tools/perf/Documentation/perf-top.txt
@@ -25,9 +25,11 @@ OPTIONS
--count=<count>::
Event period to sample.
--C <cpu>::
---CPU=<cpu>::
- CPU to profile.
+-C <cpu-list>::
+--cpu=<cpu>::
+Monitor only on the list of cpus provided. Multiple CPUs can be provided as a
+comma-sperated list with no space: 0,1. Ranges of CPUs are specified with -: 0-2.
+Default is to monitor all CPUS.
-d <seconds>::
--delay=<seconds>::