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 <dengcheng.zhu@imgtec.com> Cc: linux-mips@linux-mips.org Cc: macro@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/9488/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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@ -12,6 +12,7 @@
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* GNU General Public License for more details.
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* GNU General Public License for more details.
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*/
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*/
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#include <linux/clocksource.h>
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#include <linux/clocksource.h>
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#include <linux/sched_clock.h>
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#include <asm/addrspace.h>
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#include <asm/addrspace.h>
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#include <asm/io.h>
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#include <asm/io.h>
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@ -53,6 +54,11 @@ struct clocksource bcm1250_clocksource = {
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.flags = CLOCK_SOURCE_IS_CONTINUOUS,
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.flags = CLOCK_SOURCE_IS_CONTINUOUS,
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};
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};
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static u64 notrace sb1250_read_sched_clock(void)
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{
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return sb1250_hpt_get_cycles();
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}
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void __init sb1250_clocksource_init(void)
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void __init sb1250_clocksource_init(void)
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{
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{
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struct clocksource *cs = &bcm1250_clocksource;
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struct clocksource *cs = &bcm1250_clocksource;
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@ -69,4 +75,6 @@ void __init sb1250_clocksource_init(void)
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R_SCD_TIMER_CFG)));
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R_SCD_TIMER_CFG)));
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clocksource_register_hz(cs, V_SCD_TIMER_FREQ);
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clocksource_register_hz(cs, V_SCD_TIMER_FREQ);
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sched_clock_register(sb1250_read_sched_clock, 23, V_SCD_TIMER_FREQ);
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}
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}
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