[S390] lockless idle time accounting

Replace the spinlock used in the idle time accounting with a sequence
counter mechanism analog to seqlock.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/s390/include/asm/cputime.h b/arch/s390/include/asm/cputime.h
index ec917d42ee6d..7a3817a656df 100644
--- a/arch/s390/include/asm/cputime.h
+++ b/arch/s390/include/asm/cputime.h
@@ -178,7 +178,7 @@ cputime64_to_clock_t(cputime64_t cputime)
 }
 
 struct s390_idle_data {
-        spinlock_t lock;
+        unsigned int sequence;
         unsigned long long idle_count;
         unsigned long long idle_enter;
         unsigned long long idle_time;