Commit 6589c93f authored by Sven Schnelle's avatar Sven Schnelle Committed by Heiko Carstens

s390: add trace events for idle enter/exit

Helpful for debugging.
Signed-off-by: default avatarSven Schnelle <svens@linux.ibm.com>
Reviewed-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
parent 7b7735c5
...@@ -14,6 +14,7 @@ ...@@ -14,6 +14,7 @@
#include <linux/init.h> #include <linux/init.h>
#include <linux/cpu.h> #include <linux/cpu.h>
#include <linux/sched/cputime.h> #include <linux/sched/cputime.h>
#include <trace/events/power.h>
#include <asm/nmi.h> #include <asm/nmi.h>
#include <asm/smp.h> #include <asm/smp.h>
#include "entry.h" #include "entry.h"
...@@ -32,11 +33,12 @@ void enabled_wait(void) ...@@ -32,11 +33,12 @@ void enabled_wait(void)
PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK; PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK;
clear_cpu_flag(CIF_NOHZ_DELAY); clear_cpu_flag(CIF_NOHZ_DELAY);
trace_cpu_idle_rcuidle(1, smp_processor_id());
local_irq_save(flags); local_irq_save(flags);
/* Call the assembler magic in entry.S */ /* Call the assembler magic in entry.S */
psw_idle(idle, psw_mask); psw_idle(idle, psw_mask);
local_irq_restore(flags); local_irq_restore(flags);
trace_cpu_idle_rcuidle(PWR_EVENT_EXIT, smp_processor_id());
/* Account time spent with enabled wait psw loaded as idle time. */ /* Account time spent with enabled wait psw loaded as idle time. */
write_seqcount_begin(&idle->seqcount); write_seqcount_begin(&idle->seqcount);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment