[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Message-ID: <tip-2e569d36729c8105ae066a9b105068305442cc77@git.kernel.org>
Date: Fri, 15 May 2009 14:43:57 GMT
From: tip-bot for Peter Zijlstra <a.p.zijlstra@...llo.nl>
To: linux-tip-commits@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, acme@...hat.com, paulus@...ba.org,
hpa@...or.com, mingo@...hat.com, a.p.zijlstra@...llo.nl,
tglx@...utronix.de, cjashfor@...ux.vnet.ibm.com, mingo@...e.hu
Subject: [tip:perfcounters/core] perf_counter: frequency based adaptive irq_period, 32-bit fix
Commit-ID: 2e569d36729c8105ae066a9b105068305442cc77
Gitweb: http://git.kernel.org/tip/2e569d36729c8105ae066a9b105068305442cc77
Author: Peter Zijlstra <a.p.zijlstra@...llo.nl>
AuthorDate: Fri, 15 May 2009 15:37:47 +0200
Committer: Ingo Molnar <mingo@...e.hu>
CommitDate: Fri, 15 May 2009 15:40:25 +0200
perf_counter: frequency based adaptive irq_period, 32-bit fix
fix:
kernel/built-in.o: In function `perf_counter_alloc':
perf_counter.c:(.text+0x7ddc7): undefined reference to `__udivdi3'
[ Impact: build fix on 32-bit systems ]
Reported-by: Ingo Molnar <mingo@...e.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Corey Ashford <cjashfor@...ux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
LKML-Reference: <1242394667.6642.1887.camel@...top>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
kernel/perf_counter.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c
index 0ad1db4..728a595 100644
--- a/kernel/perf_counter.c
+++ b/kernel/perf_counter.c
@@ -2942,7 +2942,7 @@ perf_counter_alloc(struct perf_counter_hw_event *hw_event,
hwc = &counter->hw;
if (hw_event->freq && hw_event->irq_freq)
- hwc->irq_period = TICK_NSEC / hw_event->irq_freq;
+ hwc->irq_period = div64_u64(TICK_NSEC, hw_event->irq_freq);
else
hwc->irq_period = hw_event->irq_period;
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists