netsniff-ng.git - A high-performance Linux networking toolkit

Age	Commit message (Expand)	Author	Files	Lines
2013-06-04	ioops: Add {read,write}_blob_or_die for reading/writing binary blobs	Daniel Borkmann	1	-0/+2
2013-06-04	xio: rename xio to ioops and reduce its includes	Daniel Borkmann	1	-0/+12

t;Gaurav.Jindal@spreadtrum.com>2016-07-14 12:04:20 +0000 committerThomas Gleixner <tglx@linutronix.de>2016-07-19 13:48:24 +0200 commit1f3b0f8243cb934307f59bd4d8e43b868e61d4d9 (patch) treed90d8e192e06c3f7de17bfb7e74a32269b05c910 parent775be506266a860f141f6b848c92c316c602a94f (diff)

tick/nohz: Optimize nohz idle enter

tick_nohz_start_idle is called before checking whether the idle tick can be stopped. If the tick cannot be stopped, calling tick_nohz_start_idle() is pointless and just wasting CPU cycles. Only invoke tick_nohz_start_idle() when can_stop_idle_tick() returns true. A short one minute observation of the effect on ARM64 shows a reduction of calls by 1.5% thus optimizing the idle entry sequence. [tglx: Massaged changelog ] Co-developed-by: Sanjeev Yadav<sanjeev.yadav@spreadtrum.com> Signed-off-by: Gaurav Jindal<gaurav.jindal@spreadtrum.com> Link: http://lkml.kernel.org/r/20160714120416.GB21099@gaurav.jindal@spreadtrum.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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