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authorLinus Torvalds <torvalds@linux-foundation.org>2020-03-29 10:36:29 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-03-29 10:36:29 -0700
commitab93e984dbb41578b41208cee52ce4e709951eb2 (patch)
tree6918a08be161018d6207acf2e31aa97169b2a2b4
parent01af08bd24edf50b2d9e06f18df13cb8d0d645b7 (diff)
parent749da8ca978f19710aba496208c480ad42d37f79 (diff)
downloadlinux-sh-ab93e984dbb41578b41208cee52ce4e709951eb2.tar.gz
Merge tag 'timers-urgent-2020-03-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Thomas Gleixner: "A single fix for the Hyper-V clocksource driver to make sched clock actually return nanoseconds and not the virtual clock value which increments at 10e7 HZ (100ns)" * tag 'timers-urgent-2020-03-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: clocksource/drivers/hyper-v: Make sched clock return nanoseconds correctly
-rw-r--r--drivers/clocksource/hyperv_timer.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/clocksource/hyperv_timer.c b/drivers/clocksource/hyperv_timer.c
index 9d808d595ca8..eb0ba7818eb0 100644
--- a/drivers/clocksource/hyperv_timer.c
+++ b/drivers/clocksource/hyperv_timer.c
@@ -343,7 +343,8 @@ static u64 notrace read_hv_clock_tsc_cs(struct clocksource *arg)
static u64 read_hv_sched_clock_tsc(void)
{
- return read_hv_clock_tsc() - hv_sched_clock_offset;
+ return (read_hv_clock_tsc() - hv_sched_clock_offset) *
+ (NSEC_PER_SEC / HV_CLOCK_HZ);
}
static void suspend_hv_clock_tsc(struct clocksource *arg)
@@ -398,7 +399,8 @@ static u64 notrace read_hv_clock_msr_cs(struct clocksource *arg)
static u64 read_hv_sched_clock_msr(void)
{
- return read_hv_clock_msr() - hv_sched_clock_offset;
+ return (read_hv_clock_msr() - hv_sched_clock_offset) *
+ (NSEC_PER_SEC / HV_CLOCK_HZ);
}
static struct clocksource hyperv_cs_msr = {