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Commit 262f1c92 authored by Deng-Cheng Zhu's avatar Deng-Cheng Zhu Committed by Ralf Baechle
Browse files

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: default avatarDeng-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: default avatarRalf Baechle <ralf@linux-mips.org>
parent 0dc886ab

arch/mips/kernel/csrc-sb1250.c

+8 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 
 * GNU General Public License for more details.

 */

#include <linux/clocksource.h>

#include <linux/sched_clock.h>



#include <asm/addrspace.h>

#include <asm/io.h>
@@ -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);

}