Commit [68d3f1] Maximize Restore History

lockup_detector: Sync touch_*_watchdog back to old semantics

During my rewrite, the semantics of touch_nmi_watchdog and
touch_softlockup_watchdog changed enough to break some drivers
(mostly over preemptable regions).

These are cases where long delays on one CPU (due to
print_delay for example) can cause long delays on other
CPUs - so we must 'touch' the nmi_watchdog flag of those
other CPUs as well.

This change brings those touch_*_watchdog() functions back in line
with to how they used to work.

Signed-off-by: Don Zickus <>
Acked-by: Cyrill Gorcunov <>
LKML-Reference: <>
Signed-off-by: Ingo Molnar <>

Don Zickus Don Zickus 2010-09-01

Ingo Molnar Ingo Molnar 2010-09-01

changed kernel
changed kernel/watchdog.c
kernel/watchdog.c Diff Switch to side-by-side view