linux-kernel - [PATCH V2 0/2] hrtimer: Iterate only over active clock-bases

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Date:	Tue,  7 Apr 2015 07:40:51 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>
Cc:	linaro-kernel@...ts.linaro.org, linux-kernel@...r.kernel.org,
	Preeti U Murthy <preeti@...ux.vnet.ibm.com>,
	Viresh Kumar <viresh.kumar@...aro.org>
Subject: [PATCH V2 0/2] hrtimer: Iterate only over active clock-bases

Hi,

'active_bases' indicates which clock-base have active timers. While it
is updated (almost) correctly, it is hardly used.

And so this is an attempt to improve the code that iterates over all
clock-bases.

The first patch fixes a issue that will result in a bug after the second commit,
and the second commit creates a macro for_each_active_base() and uses it at
multiple places.

V1->V2:
- Dropped ffs() and wrote own routine __next_bit().

Viresh Kumar (2):
  hrtimer: update '->active_bases' before calling
    hrtimer_force_reprogram()
  hrtimer: create for_each_active_base() to iterate over active
    clock-bases

 kernel/time/hrtimer.c | 70 ++++++++++++++++++++++++++++++++-------------------
 1 file changed, 44 insertions(+), 26 deletions(-)

-- 
2.3.0.rc0.44.ga94655d

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