tree 44b0da428fccaea1ad83c537bcc99a80b9251227
parent 98962465ed9e6ea99c38e0af63fe1dcb5a79dc25
author Thomas Gleixner <tglx@linutronix.de> 1258060326 +0100
committer Thomas Gleixner <tglx@linutronix.de> 1258141584 +0100

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>