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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2008-12-31 15:11:40 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2008-12-31 15:11:47 +0100
commit6f43092441bda528dd38f2dc6c1e2522c5079fb7 (patch)
treee8bba1cf80b19be3e3658b9351b32469ba8c6bac /arch/s390/include/asm/cpu.h
parentaa5e97ce4bbc9d5daeec16b1d15bb3f6b7b4f4d4 (diff)
[PATCH] improve precision of idle time detection.
Increase the precision of the idle time calculation that is exported to user space via /sys/devices/system/cpu/cpu<x>/idle_time_us Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/cpu.h')
-rw-r--r--arch/s390/include/asm/cpu.h3
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/s390/include/asm/cpu.h b/arch/s390/include/asm/cpu.h
index e5a6a9ba3adf..89456df43c4a 100644
--- a/arch/s390/include/asm/cpu.h
+++ b/arch/s390/include/asm/cpu.h
@@ -14,7 +14,6 @@
struct s390_idle_data {
spinlock_t lock;
- unsigned int in_idle;
unsigned long long idle_count;
unsigned long long idle_enter;
unsigned long long idle_time;
@@ -26,7 +25,7 @@ void s390_idle_leave(void);
static inline void s390_idle_check(void)
{
- if ((&__get_cpu_var(s390_idle))->in_idle)
+ if ((&__get_cpu_var(s390_idle))->idle_enter != 0ULL)
s390_idle_leave();
}

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