From 6a152bfd1983999f9fc8cb65ede0a71c22ba8256 Mon Sep 17 00:00:00 2001
From: Brendan Gregg <bgregg@netflix.com>
Date: Thu, 22 Jun 2017 10:00:51 -0700
Subject: [PATCH] update perf script help message

---
 stackcollapse-perf.pl | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/stackcollapse-perf.pl b/stackcollapse-perf.pl
index e3dbe0c0..55547495 100755
--- a/stackcollapse-perf.pl
+++ b/stackcollapse-perf.pl
@@ -100,8 +100,10 @@ sub remember_stack {
 	--kernel	# annotate kernel functions with a _[k]
 	--jit		# annotate jit functions with a _[j]
 	--context	# adds source context to --inline\n
-[1] perf script must emit both PID and TIDs for these to work; eg:
+[1] perf script must emit both PID and TIDs for these to work; eg, Linux < 4.1:
 	perf script -f comm,pid,tid,cpu,time,event,ip,sym,dso,trace
+    for Linux >= 4.1:
+	perf script -F comm,pid,tid,cpu,time,event,ip,sym,dso,trace
 USAGE_END
 
 if ($annotate_all) {