From 262f1c92912fcf4150cafb1b1e78a2e4e646d008 Mon Sep 17 00:00:00 2001 From: Deng-Cheng Zhu Date: Sat, 7 Mar 2015 10:30:34 -0800 Subject: [PATCH] MIPS: csrc-sb1250: Implement read_sched_clock Use sb1250 hpt for sched_clock source. This implementation will give high resolution cputime accounting. Signed-off-by: Deng-Cheng Zhu Cc: linux-mips@linux-mips.org Cc: macro@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/9488/ Signed-off-by: Ralf Baechle --- arch/mips/kernel/csrc-sb1250.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/mips/kernel/csrc-sb1250.c b/arch/mips/kernel/csrc-sb1250.c index 1ecfa4bc842a..d915652b4d56 100644 --- a/arch/mips/kernel/csrc-sb1250.c +++ b/arch/mips/kernel/csrc-sb1250.c @@ -12,6 +12,7 @@ * GNU General Public License for more details. */ #include +#include #include #include @@ -53,6 +54,11 @@ struct clocksource bcm1250_clocksource = { .flags = CLOCK_SOURCE_IS_CONTINUOUS, }; +static u64 notrace sb1250_read_sched_clock(void) +{ + return sb1250_hpt_get_cycles(); +} + void __init sb1250_clocksource_init(void) { struct clocksource *cs = &bcm1250_clocksource; @@ -69,4 +75,6 @@ void __init sb1250_clocksource_init(void) R_SCD_TIMER_CFG))); clocksource_register_hz(cs, V_SCD_TIMER_FREQ); + + sched_clock_register(sb1250_read_sched_clock, 23, V_SCD_TIMER_FREQ); } -- 2.20.1