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author | David S. Miller <davem@davemloft.net> | 2010-01-23 03:31:06 -0500 |
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committer | David S. Miller <davem@davemloft.net> | 2010-01-23 03:31:06 -0500 |
commit | 51c24aaacaea90c8e87f1dec75a2ac7622b593f8 (patch) | |
tree | 9f54936c87764bef75e97395cb56b7d1e0df24c6 /arch/powerpc/kernel/time.c | |
parent | 4276e47e2d1c85a2477caf0d22b91c4f2377fba8 (diff) | |
parent | 6be325719b3e54624397e413efd4b33a997e55a3 (diff) |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Diffstat (limited to 'arch/powerpc/kernel/time.c')
-rw-r--r-- | arch/powerpc/kernel/time.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 9ba2cc88591d..6c6093d67f30 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c | |||
@@ -903,12 +903,21 @@ static void decrementer_set_mode(enum clock_event_mode mode, | |||
903 | decrementer_set_next_event(DECREMENTER_MAX, dev); | 903 | decrementer_set_next_event(DECREMENTER_MAX, dev); |
904 | } | 904 | } |
905 | 905 | ||
906 | static inline uint64_t div_sc64(unsigned long ticks, unsigned long nsec, | ||
907 | int shift) | ||
908 | { | ||
909 | uint64_t tmp = ((uint64_t)ticks) << shift; | ||
910 | |||
911 | do_div(tmp, nsec); | ||
912 | return tmp; | ||
913 | } | ||
914 | |||
906 | static void __init setup_clockevent_multiplier(unsigned long hz) | 915 | static void __init setup_clockevent_multiplier(unsigned long hz) |
907 | { | 916 | { |
908 | u64 mult, shift = 32; | 917 | u64 mult, shift = 32; |
909 | 918 | ||
910 | while (1) { | 919 | while (1) { |
911 | mult = div_sc(hz, NSEC_PER_SEC, shift); | 920 | mult = div_sc64(hz, NSEC_PER_SEC, shift); |
912 | if (mult && (mult >> 32UL) == 0UL) | 921 | if (mult && (mult >> 32UL) == 0UL) |
913 | break; | 922 | break; |
914 | 923 | ||