[RFC PATCH 0/2] Introduce cpumask_first_but() and use cases

[I Hsin Cheng <richard120310@gmail.com>]

This series introduce cpumask_first_but() and make cpumask_any_but()
a wrapper around it, just like other cpumask_any*() helpers, they're
some wrappers around cpumask_first*(), except some special cases.

The patches are scheduled as the following:
1. The implementation of cpumask_first_but() and some
positive results of making cpumask_any_but() a wrapper around
it are attached there, including performance and code size.

2. Use cpumask_first_but() in clocksource


I Hsin Cheng (2):
  cpumask: Introduce cpumask_first_but()
  clocksource: Use cpumask_first_but() in
    clocksource_verify_choose_cpus()

 include/linux/cpumask.h   | 22 ++++++++++++++++------
 kernel/time/clocksource.c |  4 +---
 2 files changed, 17 insertions(+), 9 deletions(-)

-- 
2.43.0