[RFC][PATCH 01/31] locking: Flip arguments to atomic_fetch_or

[Peter Zijlstra]

All the atomic operations have their arguments the wrong way around;
make atomic_fetch_or() consistent and flip them.

Signed-off-by: Peter Zijlstra (Intel) <pet...@infradead.org>
---
 include/linux/atomic.h   |    4 ++--
 kernel/time/tick-sched.c |    4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

--- a/include/linux/atomic.h
+++ b/include/linux/atomic.h
@@ -560,11 +560,11 @@ static inline int atomic_dec_if_positive
 
 /**
  * atomic_fetch_or - perform *p |= mask and return old value of *p
- * @p: pointer to atomic_t
  * @mask: mask to OR on the atomic_t
+ * @p: pointer to atomic_t
  */
 #ifndef atomic_fetch_or
-static inline int atomic_fetch_or(atomic_t *p, int mask)
+static inline int atomic_fetch_or(int mask, atomic_t *p)
 {
        int old, val = atomic_read(p);
 
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -262,7 +262,7 @@ static void tick_nohz_dep_set_all(atomic
 {
        int prev;
 
-       prev = atomic_fetch_or(dep, BIT(bit));
+       prev = atomic_fetch_or(BIT(bit), dep);
        if (!prev)
                tick_nohz_full_kick_all();
 }
@@ -292,7 +292,7 @@ void tick_nohz_dep_set_cpu(int cpu, enum
 
        ts = per_cpu_ptr(&tick_cpu_sched, cpu);
 
-       prev = atomic_fetch_or(&ts->tick_dep_mask, BIT(bit));
+       prev = atomic_fetch_or(BIT(bit), &ts->tick_dep_mask);
        if (!prev) {
                preempt_disable();
                /* Perf needs local kick that is NMI safe */