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-rw-r--r--tools/perf/Documentation/perf-script.txt6
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index e2468ed6a307..5ee8796be96e 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -117,7 +117,8 @@ OPTIONS
Comma separated list of fields to print. Options are:
comm, tid, pid, time, cpu, event, trace, ip, sym, dso, addr, symoff,
srcline, period, iregs, brstack, brstacksym, flags, bpf-output, brstackinsn, brstackoff,
- callindent, insn, insnlen. Field list can be prepended with the type, trace, sw or hw,
+ callindent, insn, insnlen, synth.
+ Field list can be prepended with the type, trace, sw or hw,
to indicate to which event type the field list applies.
e.g., -F sw:comm,tid,time,ip,sym and -F trace:time,cpu,trace
@@ -193,6 +194,9 @@ OPTIONS
instruction bytes and the instruction length of the current
instruction.
+ The synth field is used by synthesized events which may be created when
+ Instruction Trace decoding.
+
Finally, a user may not set fields to none for all event types.
i.e., -F "" is not allowed.