Re: linux-next: Tree for Feb 11 (intel_pstate.c)

[Dirk Brandewie]

On 02/11/2013 08:18 AM, Randy Dunlap wrote:
> On 02/10/13 23:47, Stephen Rothwell wrote:
> > Hi all,
> >
> > Changes since 20130208:
>
> on i386:
>
> drivers/built-in.o: In function `intel_pstate_timer_func':
> intel_pstate.c:(.text+0x4ce97e): undefined reference to `__udivdi3'
> drivers/built-in.o: In function `intel_pstate_cpu_init':
> intel_pstate.c:(.cpuinit.text+0x974): undefined reference to `__udivdi3'
DOOH :-(  This patch fixes the issue.  I will work with Rafael to get it into
his next branch.

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 86ad482..e879963 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -456,7 +456,8 @@ static inline void intel_pstate_calc_busy(struct cpudata *cp
        core_pct = div64_u64(sample->aperf * 100, sample->mperf);
        sample->freq = cpu->pstate.turbo_pstate * core_pct * 1000;

-       sample->core_pct_busy = sample->pstate_pct_busy * core_pct / 100;
+       sample->core_pct_busy = div_s64((sample->pstate_pct_busy * core_pct),
+                                       100);
 }

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