linux-kernel - [PATCH] Use boot based time for uptime in /proc

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Date:	Thu, 10 May 2007 19:10:58 +0200
From:	Tomas Janousek <tjanouse@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	john stultz <johnstul@...ibm.com>, linux-kernel@...r.kernel.org,
	tsmetana@...hat.com, riel@...hat.com,
	Albert Cahalan <acahalan@...il.com>
Subject: [PATCH] Use boot based time for uptime in /proc

Commit 411187fb05cd11676b0979d9fbf3291db69dbce2 caused uptime not to increase
during suspend. This may cause confusion so I restore the old behaviour by
using the boot based time instead of monotonic for uptime.

Signed-off-by: Tomas Janousek <tjanouse@...hat.com>
---
 fs/proc/proc_misc.c |    1 +
 kernel/timer.c      |    1 +
 2 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 0782d34..d84956c 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -107,6 +107,7 @@ static int uptime_read_proc(char *page, char **start, off_t off,
 	cputime_t idletime = cputime_add(init_task.utime, init_task.stime);
 
 	do_posix_clock_monotonic_gettime(&uptime);
+	monotonic_to_bootbased(&uptime);
 	cputime_to_timespec(idletime, &idle);
 	len = sprintf(page,"%lu.%02lu %lu.%02lu\n",
 			(unsigned long) uptime.tv_sec,
diff --git a/kernel/timer.c b/kernel/timer.c
index d5e1d6f..3a8ba7d 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1106,6 +1106,7 @@ int do_sysinfo(struct sysinfo *info)
 		getnstimeofday(&tp);
 		tp.tv_sec += wall_to_monotonic.tv_sec;
 		tp.tv_nsec += wall_to_monotonic.tv_nsec;
+		monotonic_to_bootbased(&tp);
 		if (tp.tv_nsec - NSEC_PER_SEC >= 0) {
 			tp.tv_nsec = tp.tv_nsec - NSEC_PER_SEC;
 			tp.tv_sec++;
-- 
1.5.1.4


-- 
TJ. (Brno, CZ), BaseOS, Red Hat
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