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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2012-03-30 12:23:08 +0200
committerThomas Gleixner <tglx@linutronix.de>2012-03-30 15:43:33 +0200
commitcb85a6ed67e979c59a29b7b4e8217e755b951cf4 (patch)
tree512614bafe8d0038f38c30282fcf505906ff146d /kernel/printk.c
parentaa2bf9bc6414b6972b9e51903c1ce7b1f057aee2 (diff)
downloadlinux-cb85a6ed67e979c59a29b7b4e8217e755b951cf4.tar.bz2
proc: stats: Use arch_idle_time for idle and iowait times if available
Git commit a25cac5198d4ff28 "proc: Consider NO_HZ when printing idle and iowait times" changes the code for /proc/stat to use get_cpu_idle_time_us and get_cpu_iowait_time_us if the system is running with nohz enabled. For architectures which define arch_idle_time (currently s390 only) this is a change for the worse. The result of arch_idle_time is supposed to be the exact sleep time of the target cpu and should be used instead of the value kept by the scheduler. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Reviewed-by: Michal Hocko <mhocko@suse.cz> Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/20120330122308.18720283@de.ibm.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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