Commit-ID: 031a7f456adecaff692bc040b31a7d2262b4ee56
Gitweb: http://git.kernel.org/tip/031a7f456adecaff692bc040b31a7d2262b4ee56
Author: Frederic Weisbecker <fweisbec@xxxxxxxxx>
AuthorDate: Mon, 27 Oct 2014 17:16:04 +0100
Committer: Frederic Weisbecker <fweisbec@xxxxxxxxx>
CommitDate: Wed, 29 Jul 2015 15:44:58 +0200
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@xxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc; John Stultz <john.stultz@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Preeti U Murthy <preeti@xxxxxxxxxxxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
Signed-off-by: Frederic Weisbecker <fweisbec@xxxxxxxxx>
---
arch/x86/kernel/apm_32.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/apm_32.c b/arch/x86/kernel/apm_32.c
index 927ec92..052c9c3 100644
--- a/arch/x86/kernel/apm_32.c
+++ b/arch/x86/kernel/apm_32.c
@@ -919,7 +919,7 @@ recalc:
} 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);
--
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