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s390: replace ACCESS_ONCE with READ_ONCE 

Remove the last places of ACCESS_ONCE in s390 code.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
hifive-unleashed-5.1
Christian Borntraeger 2017-02-10 12:34:49 +01:00 committed by Martin Schwidefsky
parent d321796753
commit 187b5f41b4
3 changed files with 9 additions and 9 deletions
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2
arch/s390/include/asm/spinlock.h
View File

@ -63,7 +63,7 @@ static inline int arch_spin_value_unlocked(arch_spinlock_t lock)
static inline int arch_spin_is_locked(arch_spinlock_t *lp)
{
return ACCESS_ONCE(lp->lock) != 0;
return READ_ONCE(lp->lock) != 0;
}
static inline int arch_spin_trylock_once(arch_spinlock_t *lp)

14
arch/s390/kernel/idle.c
View File

@ -57,8 +57,8 @@ static ssize_t show_idle_count(struct device *dev,
do {
seq = read_seqcount_begin(&idle->seqcount);
idle_count = ACCESS_ONCE(idle->idle_count);
if (ACCESS_ONCE(idle->clock_idle_enter))
idle_count = READ_ONCE(idle->idle_count);
if (READ_ONCE(idle->clock_idle_enter))
idle_count++;
} while (read_seqcount_retry(&idle->seqcount, seq));
return sprintf(buf, "%llu\n", idle_count);
@ -75,9 +75,9 @@ static ssize_t show_idle_time(struct device *dev,
do {
now = get_tod_clock();
seq = read_seqcount_begin(&idle->seqcount);
idle_time = ACCESS_ONCE(idle->idle_time);
idle_enter = ACCESS_ONCE(idle->clock_idle_enter);
idle_exit = ACCESS_ONCE(idle->clock_idle_exit);
idle_time = READ_ONCE(idle->idle_time);
idle_enter = READ_ONCE(idle->clock_idle_enter);
idle_exit = READ_ONCE(idle->clock_idle_exit);
} while (read_seqcount_retry(&idle->seqcount, seq));
idle_time += idle_enter ? ((idle_exit ? : now) - idle_enter) : 0;
return sprintf(buf, "%llu\n", idle_time >> 12);
@ -93,8 +93,8 @@ cputime64_t arch_cpu_idle_time(int cpu)
do {
now = get_tod_clock();
seq = read_seqcount_begin(&idle->seqcount);
idle_enter = ACCESS_ONCE(idle->clock_idle_enter);
idle_exit = ACCESS_ONCE(idle->clock_idle_exit);
idle_enter = READ_ONCE(idle->clock_idle_enter);
idle_exit = READ_ONCE(idle->clock_idle_exit);
} while (read_seqcount_retry(&idle->seqcount, seq));
return idle_enter ? ((idle_exit ?: now) - idle_enter) : 0;
}

2
arch/s390/lib/spinlock.c
View File

@ -133,7 +133,7 @@ int arch_spin_trylock_retry(arch_spinlock_t *lp)
int count;
for (count = spin_retry; count > 0; count--) {
owner = ACCESS_ONCE(lp->lock);
owner = READ_ONCE(lp->lock);
/* Try to get the lock if it is free. */
if (!owner) {
if (_raw_compare_and_swap(&lp->lock, 0, cpu))