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s390/time: adjust last_update_clock at clock synchronization

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The last_update_clock time stamp in the lowcore should be adjusted by
the TOD clock delta that is created by the clock synchronization.
Otherwise the calculation of the steal time will be incorrect.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky 2016-10-10 12:14:32 +02:00
parent b1c0854d16
commit 2ace06ec0d
1 changed files with 2 additions and 0 deletions
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2
arch/s390/kernel/time.c
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@ -401,6 +401,8 @@ static void clock_sync_local(unsigned long long delta)
S390_lowcore.clock_comparator += delta;
set_clock_comparator(S390_lowcore.clock_comparator);
}
/* Adjust the last_update_clock time-stamp. */
S390_lowcore.last_update_clock += delta;
}
/* Single threaded workqueue used for stp sync events */