diff options
| author |   Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-05-15 15:37:47 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2009-05-15 15:40:25 +0200 |
| commit | 2e569d36729c8105ae066a9b105068305442cc77 (patch) | |
| tree | ce18dba8c5635693cdeb4af3652ba77c4e98abde /kernel/perf_counter.c | |
| parent | perf top: update to use the new freq interface (diff) | |
| download | linux-dev-2e569d36729c8105ae066a9b105068305442cc77.tar.xz linux-dev-2e569d36729c8105ae066a9b105068305442cc77.zip | |
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@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
LKML-Reference: <1242394667.6642.1887.camel@laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/perf_counter.c')
| -rw-r--r-- | 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 0ad1db4f3d65..728a595399b0 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; |