cputime: Optimize jiffies_to_cputime(1)

[mv-sheeva.git] / arch / powerpc / kernel / time.c

diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index eae4511ceeac272947f3e164befc73a3145481dd..211d7b0cd370da5c66d1db3159ad5a91165e7c2b 100644 (file)
--- 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;
@@ -500,6 +502,7 @@ 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"
@@ -945,6 +948,7 @@ 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