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-rw-r--r--tools/perf/Documentation/perf-trace.txt9
1 files changed, 8 insertions, 1 deletions
diff --git a/tools/perf/Documentation/perf-trace.txt b/tools/perf/Documentation/perf-trace.txt
index 887dc37773d0..c1fb6056a0d3 100644
--- a/tools/perf/Documentation/perf-trace.txt
+++ b/tools/perf/Documentation/perf-trace.txt
@@ -152,7 +152,8 @@ the thread executes on the designated CPUs. Default is to monitor all CPUs.
--summary-mode=mode::
To be used with -s or -S, to select how to show summary. By default it'll
- show the syscall summary by thread. Possible values are: thread, total.
+ show the syscall summary by thread. Possible values are: thread, total,
+ cgroup.
--tool_stats::
Show tool stats such as number of times fd->pathname was discovered thru
@@ -251,6 +252,12 @@ the thread executes on the designated CPUs. Default is to monitor all CPUs.
pretty-printing serves as a fallback to hand-crafted pretty printers, as the latter can
better pretty-print integer flags and struct pointers.
+--bpf-summary::
+ Collect system call statistics in BPF. This is only for live mode and
+ works well with -s/--summary option where no argument information is
+ required.
+
+
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