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authorThomas Gleixner <tglx@linutronix.de>2009-11-12 22:12:06 +0100
committerThomas Gleixner <tglx@linutronix.de>2009-11-13 20:46:24 +0100
commit27185016b806d5a1181ff501cae120582b2b27dd (patch)
tree44b0da428fccaea1ad83c537bcc99a80b9251227 /kernel/time/timer_list.c
parent98962465ed9e6ea99c38e0af63fe1dcb5a79dc25 (diff)
downloadlinaro-lsk-27185016b806d5a1181ff501cae120582b2b27dd.tar.gz
nohz: Track last do_timer() cpu
The previous patch which limits the sleep time to the maximum deferment time of the time keeping clocksource has some limitations on SMP machines: if all CPUs are idle then for all CPUs the maximum sleep time is limited. Solve this by keeping track of which cpu had the do_timer() duty assigned last and limit the sleep time only for this cpu. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> LKML-Reference: <new-submission> Cc: Jon Hunter <jon-hunter@ti.com> Cc: John Stultz <johnstul@us.ibm.com>
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