From 9292c8f405b0ed208443df0b1f9ebd497bb518ab Mon Sep 17 00:00:00 2001
From: Mark Whitehorn <kd0aij@gmail.com>
Date: Sat, 20 Dec 2014 10:27:02 -0700
Subject: add interrupt latency printout command and mean/variance to interval
 performance counter

---
 src/systemcmds/perf/perf.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'src/systemcmds/perf')

diff --git a/src/systemcmds/perf/perf.c b/src/systemcmds/perf/perf.c
index b08a2e3b7..a788dfc11 100644
--- a/src/systemcmds/perf/perf.c
+++ b/src/systemcmds/perf/perf.c
@@ -68,8 +68,12 @@ int perf_main(int argc, char *argv[])
 		if (strcmp(argv[1], "reset") == 0) {
 			perf_reset_all();
 			return 0;
+		} else if (strcmp(argv[1], "latency") == 0) {
+			perf_print_latency(0 /* stdout */);
+			fflush(stdout);
+			return 0;
 		}
-		printf("Usage: perf <reset>\n");
+		printf("Usage: perf [reset | latency]\n");
 		return -1;
 	}
 
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