percpu: Remove irqsafe_cpu_xxx variants

We simply say that regular this_cpu use must be safe regardless of
preemption and interrupt state.  That has no material change for x86
and s390 implementations of this_cpu operations.  However, arches that
do not provide their own implementation for this_cpu operations will
now get code generated that disables interrupts instead of preemption.

-tj: This is part of on-going percpu API cleanup.  For detailed
     discussion of the subject, please refer to the following thread.

     http://thread.gmane.org/gmane.linux.kernel/1222078

Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
LKML-Reference: <alpine.DEB.2.00.1112221154380.11787@router.home>

1 files changed, 3 insertions, 3 deletions

diff --git a/mm/slub.c b/mm/slub.c
index ed3334d9b6da..0011489c28ac 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1978,7 +1978,7 @@ int put_cpu_partial(struct kmem_cache *s, struct page *page, int drain)
                 page->pobjects = pobjects;
                 page->next = oldpage;
 
-        } while (irqsafe_cpu_cmpxchg(s->cpu_slab->partial, oldpage, page) != oldpage);
+        } while (this_cpu_cmpxchg(s->cpu_slab->partial, oldpage, page) != oldpage);
         stat(s, CPU_PARTIAL_FREE);
         return pobjects;
 }
@@ -2304,7 +2304,7 @@ redo:
                  * Since this is without lock semantics the protection is only against
                  * code executing on this cpu *not* from access by other cpus.
                  */
-                if (unlikely(!irqsafe_cpu_cmpxchg_double(
+                if (unlikely(!this_cpu_cmpxchg_double(
                                 s->cpu_slab->freelist, s->cpu_slab->tid,
                                 object, tid,
                                 get_freepointer_safe(s, object), next_tid(tid)))) {
@@ -2534,7 +2534,7 @@ redo:
         if (likely(page == c->page)) {
                 set_freepointer(s, object, c->freelist);
 
-                if (unlikely(!irqsafe_cpu_cmpxchg_double(
+                if (unlikely(!this_cpu_cmpxchg_double(
                                 s->cpu_slab->freelist, s->cpu_slab->tid,
                                 c->freelist, tid,
                                 object, next_tid(tid)))) {