From: Ingo Molnar <mingo@elte.hu>
Date: Mon, 25 May 2009 12:40:01 +0000 (+0200)
Subject: perf stat: flip around ':k' and ':u' flags
X-Git-Tag: firefly_0821_release~13973^2~232
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d3f4b3855ba87caff8f35e738c7e7e3bad0a6ab1;p=firefly-linux-kernel-4.4.55.git

perf stat: flip around ':k' and ':u' flags

This output:

 $ perf stat -e 0:1:k -e 0:1:u ./hello
  Performance counter stats for './hello':
          140131  instructions         (events)
         1906968  instructions         (events)

Is quite confusing - as :k means "user instructions", :u means
"kernel instructions".

Flip them around - as the 'exclude' property is not intuitive in
the flag naming.

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/Documentation/perf_counter/builtin-stat.c b/Documentation/perf_counter/builtin-stat.c
index 8ae01d51f291..88c70be99031 100644
--- a/Documentation/perf_counter/builtin-stat.c
+++ b/Documentation/perf_counter/builtin-stat.c
@@ -266,9 +266,9 @@ static __u64 match_event_symbols(char *str)
 
 	switch (sscanf(str, "%d:%llu:%2s", &type, &id, mask_str)) {
 		case 3:
-			if (strchr(mask_str, 'u'))
-				event_mask[nr_counters] |= EVENT_MASK_USER;
 			if (strchr(mask_str, 'k'))
+				event_mask[nr_counters] |= EVENT_MASK_USER;
+			if (strchr(mask_str, 'u'))
 				event_mask[nr_counters] |= EVENT_MASK_KERNEL;
 		case 2:
 			return EID(type, id);