linux-kernel - [PATCH 06/22] lib/traceevent: Fix trace

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Date:	Wed, 23 May 2012 11:36:43 +0900
From:	Namhyung Kim <namhyung.kim@....com>
To:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Namhyung Kim <namhyung@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Wolfgang Mauerer <wolfgang.mauerer@...mens.com>
Subject: [PATCH 06/22] lib/traceevent: Fix trace_printk for long integers

From: Wolfgang Mauerer <wolfgang.mauerer@...mens.com>

On 32 bit systems, a conversion of the trace_printk format string
"%lu" -> "%llu" is intended (similar for %lx etc.) when a
trace was taken on a machine with 64 bit long integers. However,
the current code computes the bogus transformation "%lu" -> "%u".
Fix this.

Besides that, the transformation is only required on systems
that don't use 64 bits for long integers natively.

Link: http://lkml.kernel.org/r/1332411501-8059-3-git-send-email-wolfgang.mauerer@siemens.com

Signed-off-by: Wolfgang Mauerer <wolfgang.mauerer@...mens.com>
Signed-off-by: Steven Rostedt <rostedt@...dmis.org>
Signed-off-by: Namhyung Kim <namhyung.kim@....com>
---
 tools/lib/traceevent/event-parse.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index 59534e299590..8282523f489d 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -3805,14 +3805,15 @@ static void pretty_print(struct trace_seq *s, void *data, int size, struct event
 						break;
 					}
 				}
-				if (pevent->long_size == 8 && ls) {
+				if (pevent->long_size == 8 && ls &&
+				    sizeof(long) != 8) {
 					char *p;
 
 					ls = 2;
 					/* make %l into %ll */
 					p = strchr(format, 'l');
 					if (p)
-						memmove(p, p+1, strlen(p)+1);
+						memmove(p+1, p, strlen(p)+1);
 					else if (strcmp(format, "%p") == 0)
 						strcpy(format, "0x%llx");
 				}
-- 
1.7.10.1

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