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Use boot based time for process start time and boot time in /proc

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Commit 411187fb05 caused boot time to move and
process start times to become invalid after suspend.  Using boot based time
for those restores the old behaviour and fixes the issue.

[[email protected]: little cleanup]
Signed-off-by: Tomas Janousek <[email protected]>
Cc: Tomas Smetana <[email protected]>
Acked-by: John Stultz <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Tomas Janousek 2007-07-15 23:39:42 -07:00 • committed by Linus Torvalds
commit 924b42d5a2
4 changed files with 10 additions and 6 deletions
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5
fs/proc/array.c
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@ -440,8 +440,9 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole)
/* Temporary variable needed for gcc-2.96 */
/* convert timespec -> nsec*/
start_time = (unsigned long long)task->start_time.tv_sec * NSEC_PER_SEC
+ task->start_time.tv_nsec;
start_time =
(unsigned long long)task->real_start_time.tv_sec * NSEC_PER_SEC
+ task->real_start_time.tv_nsec;
/* convert nsec -> ticks */
start_time = nsec_to_clock_t(start_time);

6
fs/proc/proc_misc.c
View file

@ -443,12 +443,12 @@ static int show_stat(struct seq_file *p, void *v)
unsigned long jif;
cputime64_t user, nice, system, idle, iowait, irq, softirq, steal;
u64 sum = 0;
struct timespec boottime;
user = nice = system = idle = iowait =
irq = softirq = steal = cputime64_zero;
jif = - wall_to_monotonic.tv_sec;
if (wall_to_monotonic.tv_nsec)
--jif;
getboottime(&boottime);
jif = boottime.tv_sec;
for_each_possible_cpu(i) {
int j;