5045 use atomic_{inc,dec}_* instead of atomic_add_*

@@ -1624,11 +1624,11 @@
         vmem_free(vmp, slab, slabsize);
 
 vmem_alloc_failure:
 
         kmem_log_event(kmem_failure_log, cp, NULL, NULL);
-        atomic_add_64(&cp->cache_alloc_fail, 1);
+        atomic_inc_64(&cp->cache_alloc_fail);
 
         return (NULL);
 }
 
 /*

@@ -1993,11 +1993,11 @@
                 mtbf = 0;
         }
 
         if (mtbf || (construct && cp->cache_constructor != NULL &&
             cp->cache_constructor(buf, cp->cache_private, kmflag) != 0)) {
-                atomic_add_64(&cp->cache_alloc_fail, 1);
+                atomic_inc_64(&cp->cache_alloc_fail);
                 btp->bt_bxstat = (intptr_t)bcp ^ KMEM_BUFTAG_FREE;
                 if (cp->cache_flags & KMF_DEADBEEF)
                         copy_pattern(KMEM_FREE_PATTERN, buf, cp->cache_verify);
                 kmem_slab_free(cp, buf);
                 return (1);

@@ -2601,11 +2601,11 @@
                 return (buf);
         }
 
         if (cp->cache_constructor != NULL &&
             cp->cache_constructor(buf, cp->cache_private, kmflag) != 0) {
-                atomic_add_64(&cp->cache_alloc_fail, 1);
+                atomic_inc_64(&cp->cache_alloc_fail);
                 kmem_slab_free(cp, buf);
                 return (NULL);
         }
 
         return (buf);

@@ -4875,11 +4875,11 @@
                         return;
                 }
         } else if (cp->cache_constructor != NULL &&
             cp->cache_constructor(callback->kmm_to_buf, cp->cache_private,
             KM_NOSLEEP) != 0) {
-                atomic_add_64(&cp->cache_alloc_fail, 1);
+                atomic_inc_64(&cp->cache_alloc_fail);
                 KMEM_STAT_ADD(kmem_move_stats.kms_constructor_fail);
                 kmem_slab_free(cp, callback->kmm_to_buf);
                 kmem_move_end(cp, callback);
                 return;
         }