Rework the known rwlock to benefit about staying on their own

cache line in order to avoid manual frobbing but using
struct rwlock_padalign.

Reviewed by:	alc, jimharris

1 files changed, 1 insertions, 10 deletions

diff --git a/sys/mips/mips/pmap.c b/sys/mips/mips/pmap.c
index 7737757..608546e 100644
--- a/sys/mips/mips/pmap.c
+++ b/sys/mips/mips/pmap.c
@@ -148,16 +148,7 @@ vm_offset_t kernel_vm_end = VM_MIN_KERNEL_ADDRESS;
 
 static void pmap_asid_alloc(pmap_t pmap);
 
-/*
- * Isolate the global pv list lock from data and other locks to prevent false
- * sharing within the cache.
- */
-static struct {
-	struct rwlock	lock;
-	char		padding[CACHE_LINE_SIZE - sizeof(struct rwlock)];
-} pvh_global __aligned(CACHE_LINE_SIZE);
-
-#define	pvh_global_lock	pvh_global.lock
+static struct rwlock_padalign pvh_global_lock;
 
 /*
  * Data for the pv entry allocation mechanism