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-rw-r--r--tools/perf/Documentation/perf-trace.txt8
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-trace.txt b/tools/perf/Documentation/perf-trace.txt
index 631e687be4eb..fc6e43262c41 100644
--- a/tools/perf/Documentation/perf-trace.txt
+++ b/tools/perf/Documentation/perf-trace.txt
@@ -210,6 +210,14 @@ the thread executes on the designated CPUs. Default is to monitor all CPUs.
may happen, for instance, when a thread gets migrated to a different CPU
while processing a syscall.
+--map-dump::
+ Dump BPF maps setup by events passed via -e, for instance the augmented_raw_syscalls
+ living in tools/perf/examples/bpf/augmented_raw_syscalls.c. For now this
+ dumps just boolean map values and integer keys, in time this will print in hex
+ by default and use BTF when available, as well as use functions to do pretty
+ printing using the existing 'perf trace' syscall arg beautifiers to map integer
+ arguments to strings (pid to comm, syscall id to syscall name, etc).
+
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