[patch 0/7] tick: Cleanups and reduce jiffies_seq held times

[Thomas Gleixner]

Yunfeng proposed a change to tick_do_update_jiffies64() to reduce the
contention on jiffies_seq sequence counter:

  https://lore.kernel.org/r/ac822c72-673e-73e1-9622-c5f12591b373@xxxxxxxxxx

This made me look deeper and there are lots of other things to optimize,
but also things to document which are completely undocumented today.

The lot is based on 

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers/core

and also available via git from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git tick

Thanks,

	tglx