linux-kernel - [PATCH 1/6] blktrace: make classic output more classic

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Date:	Fri, 27 Mar 2009 10:19:46 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Jens Axboe <jens.axboe@...cle.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 1/6] blktrace: make classic output more classic

In the classic user-space blktrace, the output timestamp is sec.nsec
not sec.usec.

Signed-off-by: Li Zefan <lizf@...fujitsu.com>
---
 kernel/trace/blktrace.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index d43cdac..933639a 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -995,7 +995,7 @@ static int blk_log_action_iter(struct trace_iterator *iter, const char *act)
 {
 	char rwbs[6];
 	unsigned long long ts  = ns2usecs(iter->ts);
-	unsigned long usec_rem = do_div(ts, USEC_PER_SEC);
+	unsigned long nsec_rem = do_div(ts, NSEC_PER_SEC);
 	unsigned secs	       = (unsigned long)ts;
 	const struct trace_entry *ent = iter->ent;
 	const struct blk_io_trace *t = (const struct blk_io_trace *)ent;
@@ -1003,9 +1003,9 @@ static int blk_log_action_iter(struct trace_iterator *iter, const char *act)
 	fill_rwbs(rwbs, t);
 
 	return trace_seq_printf(&iter->seq,
-				"%3d,%-3d %2d %5d.%06lu %5u %2s %3s ",
+				"%3d,%-3d %2d %5d.%09lu %5u %2s %3s ",
 				MAJOR(t->device), MINOR(t->device), iter->cpu,
-				secs, usec_rem, ent->pid, act, rwbs);
+				secs, nsec_rem, ent->pid, act, rwbs);
 }
 
 static int blk_log_action_seq(struct trace_seq *s, const struct blk_io_trace *t,
-- 
1.5.4.rc3

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