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Message-Id: <1360610648-6952-1-git-send-email-artem.savkov@gmail.com>
Date: Mon, 11 Feb 2013 23:24:08 +0400
From: Artem Savkov <artem.savkov@...il.com>
To: "Rafael J. Wysocki" <rjw@...k.pl>,
Dirk Brandewie <dirk.brandewie@...il.com>
Cc: Viresh Kumar <viresh.kumar@...aro.org>, linux-pm@...r.kernel.org,
linux-kernel@...r.kernel.org, Artem Savkov <artem.savkov@...il.com>
Subject: [PATCH] cpufreq: 64bit divide in intel_pstate_calc_busy()
intel_pstate.c won't compile on i686 because of a linking error:
drivers/cpufreq/intel_pstate.c:459: undefined reference to `__udivdi3'
Signed-off-by: Artem Savkov <artem.savkov@...il.com>
---
drivers/cpufreq/intel_pstate.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 86ad482..dc43208 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -456,7 +456,9 @@ static inline void intel_pstate_calc_busy(struct cpudata *cpu,
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 = div64_u64(
+ sample->pstate_pct_busy * core_pct,
+ 100);
}
static inline void intel_pstate_sample(struct cpudata *cpu)
--
1.8.1.1
--
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