Don't use timespec_add_safe() with wall_to_monotonic, because
wall_to_monotonic has negative values which will cause overflow
in timespec_add_safe(). That makes btime in /proc/stat invalid.
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: John Stultz <johnstul@us.ibm.com>
Cc: Daniel Walker <dwalker@fifo99.com>
LKML-Reference: <
4A937FDE.
4050506@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
*/
void getboottime(struct timespec *ts)
{
- struct timespec boottime;
+ struct timespec boottime = {
+ .tv_sec = wall_to_monotonic.tv_sec + total_sleep_time.tv_sec,
+ .tv_nsec = wall_to_monotonic.tv_nsec + total_sleep_time.tv_nsec
+ };
- boottime = timespec_add_safe(wall_to_monotonic, total_sleep_time);
set_normalized_timespec(ts, -boottime.tv_sec, -boottime.tv_nsec);
}