p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

apm32: Fix cputime == jiffies assumption 

That code wrongly assumes that cputime_t wraps jiffies_t. Lets use
the correct accessors/mutators.

No real harm now as that code can't be used with full dynticks.

Reviewed-by: Rik van Riel <riel@redhat.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc; John Stultz <john.stultz@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
This commit is contained in:
Frederic Weisbecker 2014-10-27 17:16:04 +01:00
parent e075867681
commit 031a7f456a
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/kernel/apm_32.c
View File

@ -919,7 +919,7 @@ static int apm_cpu_idle(struct cpuidle_device *dev,
} else if (jiffies_since_last_check > idle_period) {
unsigned int idle_percentage;
idle_percentage = stime - last_stime;
idle_percentage = cputime_to_jiffies(stime - last_stime);
idle_percentage *= 100;
idle_percentage /= jiffies_since_last_check;
use_apm_idle = (idle_percentage > idle_threshold);