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author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-10-26 15:15:03 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-10-26 15:15:03 (GMT) |
commit | 39adff5f69d6849ca22353a88058c9f8630528c0 (patch) | |
tree | b0c2d2de77ebc5c97fd19c29b81eeb03549553f8 /arch/s390 | |
parent | 8a4a8918ed6e4a361f4df19f199bbc2d0a89a46c (diff) | |
parent | e35f95b36e43f67a6f806172555a152c11ea0a78 (diff) | |
download | linux-fsl-qoriq-39adff5f69d6849ca22353a88058c9f8630528c0.tar.xz |
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
time, s390: Get rid of compile warning
dw_apb_timer: constify clocksource name
time: Cleanup old CONFIG_GENERIC_TIME references that snuck in
time: Change jiffies_to_clock_t() argument type to unsigned long
alarmtimers: Fix error handling
clocksource: Make watchdog reset lockless
posix-cpu-timers: Cure SMP accounting oddities
s390: Use direct ktime path for s390 clockevent device
clockevents: Add direct ktime programming function
clockevents: Make minimum delay adjustments configurable
nohz: Remove "Switched to NOHz mode" debugging messages
proc: Consider NO_HZ when printing idle and iowait times
nohz: Make idle/iowait counter update conditional
nohz: Fix update_ts_time_stat idle accounting
cputime: Clean up cputime_to_usecs and usecs_to_cputime macros
alarmtimers: Rework RTC device selection using class interface
alarmtimers: Add try_to_cancel functionality
alarmtimers: Add more refined alarm state tracking
alarmtimers: Remove period from alarm structure
alarmtimers: Remove interval cap limit hack
...
Diffstat (limited to 'arch/s390')
-rw-r--r-- | arch/s390/kernel/time.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c index dff9330..8d65bd0 100644 --- a/arch/s390/kernel/time.c +++ b/arch/s390/kernel/time.c @@ -109,10 +109,14 @@ static void fixup_clock_comparator(unsigned long long delta) set_clock_comparator(S390_lowcore.clock_comparator); } -static int s390_next_event(unsigned long delta, +static int s390_next_ktime(ktime_t expires, struct clock_event_device *evt) { - S390_lowcore.clock_comparator = get_clock() + delta; + u64 nsecs; + + nsecs = ktime_to_ns(ktime_sub(expires, ktime_get_monotonic_offset())); + do_div(nsecs, 125); + S390_lowcore.clock_comparator = TOD_UNIX_EPOCH + (nsecs << 9); set_clock_comparator(S390_lowcore.clock_comparator); return 0; } @@ -137,14 +141,15 @@ void init_cpu_timer(void) cpu = smp_processor_id(); cd = &per_cpu(comparators, cpu); cd->name = "comparator"; - cd->features = CLOCK_EVT_FEAT_ONESHOT; + cd->features = CLOCK_EVT_FEAT_ONESHOT | + CLOCK_EVT_FEAT_KTIME; cd->mult = 16777; cd->shift = 12; cd->min_delta_ns = 1; cd->max_delta_ns = LONG_MAX; cd->rating = 400; cd->cpumask = cpumask_of(cpu); - cd->set_next_event = s390_next_event; + cd->set_next_ktime = s390_next_ktime; cd->set_mode = s390_set_mode; clockevents_register_device(cd); |