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| author |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2009-04-14 15:36:29 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2009-04-14 15:37:27 +0200 |
| commit | ab96e798cbd562a53edd802272e49a5100b29efb (patch) | |
| tree | 4b3558bc97f5c2fc5c63789431deef79534e3bd3 /arch/s390/kernel/vtime.c | |
| parent | [S390] add read_persistent_clock (diff) | |
| download | linux-dev-ab96e798cbd562a53edd802272e49a5100b29efb.tar.xz linux-dev-ab96e798cbd562a53edd802272e49a5100b29efb.zip | |
[S390] boot cputime accounting
Start the cpu time accounting very early to catch the cpu time spent
for the initial kernel setup. To make the output of /proc/uptime
match the sum of all cpu accounting values of the boot cpu reset
xtime and wall_to_monotonic to sane values based on the TOD clock.
The values set by timekeeping_init are off by up to a second.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/vtime.c')
| -rw-r--r-- | arch/s390/kernel/vtime.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c index c0870a61f90f..38ea92ff04f9 100644 --- a/arch/s390/kernel/vtime.c +++ b/arch/s390/kernel/vtime.c @@ -527,16 +527,8 @@ EXPORT_SYMBOL(del_virt_timer); */ void init_cpu_vtimer(void) { - struct thread_info *ti = current_thread_info(); struct vtimer_queue *vq; - S390_lowcore.user_timer = ti->user_timer; - S390_lowcore.system_timer = ti->system_timer; - - /* kick the virtual timer */ - asm volatile ("STCK %0" : "=m" (S390_lowcore.last_update_clock)); - asm volatile ("STPT %0" : "=m" (S390_lowcore.last_update_timer)); - /* initialize per cpu vtimer structure */ vq = &__get_cpu_var(virt_cpu_timer); INIT_LIST_HEAD(&vq->list); |