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Thomas Gleixner eaad084bb0 NOHZ: prevent multiplication overflow - stop timer for huge timeouts ... get_next_timer_interrupt() returns a delta of (LONG_MAX > 1) in case there is no timer pending. On 64 bit machines this results in a multiplication overflow in tick_nohz_stop_sched_tick(). Reported by: Dave Miller <davem@davemloft.net> Make the return value a constant and limit the return value to a 32 bit value. When the max timeout value is returned, we can safely stop the tick timer device. The max jiffies delta results in a 12 days timeout for HZ=1000. In the long term the get_next_timer_interrupt() code needs to be reworked to return ktime instead of jiffies, but we have to wait until the last users of the original NO_IDLE_HZ code are converted. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		18 years ago
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Kconfig	…
Makefile	…
clockevents.c	…
clocksource.c	…
jiffies.c	…
ntp.c	Detach sched.h from mm.h	18 years ago
tick-broadcast.c	Ignore bogus ACPI info for offline CPUs	18 years ago
tick-common.c	…
tick-internal.h	…
tick-oneshot.c	…
tick-sched.c	NOHZ: prevent multiplication overflow - stop timer for huge timeouts	18 years ago
timekeeping.c	…
timer_list.c	…
timer_stats.c	…