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authorLinus Torvalds <torvalds@linux-foundation.org>2009-09-23 09:46:15 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-23 09:46:15 -0700
commit31bbb9b58d1e8ebcf2b28c95c2250a9f8e31e397 (patch)
tree6bb0c0490d66d32eca43e73abb28d8b3ab0e7b91 /arch/powerpc/kernel/time.c
parentff830b8e5f999d1ccbd0282a666520f0b557daa4 (diff)
parent3f0a525ebf4b8ef041a332bbe4a73aee94bb064b (diff)
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Merge branch 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: itimers: Add tracepoints for itimer hrtimer: Add tracepoint for hrtimers timers: Add tracepoints for timer_list timers cputime: Optimize jiffies_to_cputime(1) itimers: Simplify arm_timer() code a bit itimers: Fix periodic tics precision itimers: Merge ITIMER_VIRT and ITIMER_PROF Trivial header file include conflicts in kernel/fork.c
Diffstat (limited to 'arch/powerpc/kernel/time.c')
-rw-r--r--arch/powerpc/kernel/time.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index df45a74..92dc844 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -193,6 +193,8 @@ EXPORT_SYMBOL(__cputime_clockt_factor);
DEFINE_PER_CPU(unsigned long, cputime_last_delta);
DEFINE_PER_CPU(unsigned long, cputime_scaled_last_delta);
+cputime_t cputime_one_jiffy;
+
static void calc_cputime_factors(void)
{
struct div_result res;
@@ -501,6 +503,7 @@ static int __init iSeries_tb_recal(void)
tb_to_xs = divres.result_low;
vdso_data->tb_ticks_per_sec = tb_ticks_per_sec;
vdso_data->tb_to_xs = tb_to_xs;
+ setup_cputime_one_jiffy();
}
else {
printk( "Titan recalibrate: FAILED (difference > 4 percent)\n"
@@ -960,6 +963,7 @@ void __init time_init(void)
tb_ticks_per_usec = ppc_tb_freq / 1000000;
tb_to_us = mulhwu_scale_factor(ppc_tb_freq, 1000000);
calc_cputime_factors();
+ setup_cputime_one_jiffy();
/*
* Calculate the length of each tick in ns. It will not be