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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2013-12-16 02:04:49 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2013-12-16 02:04:49 -0800
commit348324c5b10bcba8d9daabdfb85a6927311be34f (patch)
treed06ca3a264407a14a1f36c1b798d6dc0dc1582d8 /arch/x86/kernel/pvclock.c
parent1e63bd9cc43db5400a1423a7ec8266b4e7c54bd0 (diff)
parent319e2e3f63c348a9b66db4667efa73178e18b17d (diff)
Merge tag 'v3.13-rc4' into next
Synchronize with mainline to bring in the new keycode definitions and new hwmon API.
Diffstat (limited to 'arch/x86/kernel/pvclock.c')
-rw-r--r--arch/x86/kernel/pvclock.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/x86/kernel/pvclock.c b/arch/x86/kernel/pvclock.c
index a16bae3f83b..2f355d229a5 100644
--- a/arch/x86/kernel/pvclock.c
+++ b/arch/x86/kernel/pvclock.c
@@ -43,6 +43,14 @@ unsigned long pvclock_tsc_khz(struct pvclock_vcpu_time_info *src)
return pv_tsc_khz;
}
+void pvclock_touch_watchdogs(void)
+{
+ touch_softlockup_watchdog_sync();
+ clocksource_touch_watchdog();
+ rcu_cpu_stall_reset();
+ reset_hung_task_detector();
+}
+
static atomic64_t last_value = ATOMIC64_INIT(0);
void pvclock_resume(void)
@@ -74,6 +82,11 @@ cycle_t pvclock_clocksource_read(struct pvclock_vcpu_time_info *src)
version = __pvclock_read_cycles(src, &ret, &flags);
} while ((src->version & 1) || version != src->version);
+ if (unlikely((flags & PVCLOCK_GUEST_STOPPED) != 0)) {
+ src->flags &= ~PVCLOCK_GUEST_STOPPED;
+ pvclock_touch_watchdogs();
+ }
+
if ((valid_flags & PVCLOCK_TSC_STABLE_BIT) &&
(flags & PVCLOCK_TSC_STABLE_BIT))
return ret;