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From: Artem Savkov <artem.savkov@gmail.com>
To: "Rafael J. Wysocki" <rjw@sisk.pl>,
	Dirk Brandewie <dirk.brandewie@gmail.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>,
	linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
	Artem Savkov <artem.savkov@gmail.com>
Subject: [PATCH] cpufreq: 64bit divide in intel_pstate_calc_busy()
Date: Mon, 11 Feb 2013 23:24:08 +0400	[thread overview]
Message-ID: <1360610648-6952-1-git-send-email-artem.savkov@gmail.com> (raw)

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@gmail.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


             reply	other threads:[~2013-02-11 19:24 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-11 19:24 Artem Savkov [this message]
2013-02-11 19:42 ` [PATCH] cpufreq: 64bit divide in intel_pstate_calc_busy() Rafael J. Wysocki

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