Author: markj
Date: Tue Nov 20 00:55:51 2018
New Revision: 340658
URL: https://svnweb.freebsd.org/changeset/base/340658
Log:
MFC r340192:
Use plain atomic_{add,subtract} when that's sufficient.
Modified:
stable/12/sys/dev/mrsas/mrsas.h
stable/12/sys/kern/uipc_mqueue.c
stable/12/sys/kern/vfs_bio.c
Directory Properties:
stable/12/ (props changed)
Modified: stable/12/sys/dev/mrsas/mrsas.h
==============================================================================
--- stable/12/sys/dev/mrsas/mrsas.h Tue Nov 20 00:43:14 2018
(r340657)
+++ stable/12/sys/dev/mrsas/mrsas.h Tue Nov 20 00:55:51 2018
(r340658)
@@ -612,8 +612,8 @@ typedef union {
#define mrsas_atomic_read(v) atomic_load_acq_int(&(v)->val)
#define mrsas_atomic_set(v,i) atomic_store_rel_int(&(v)->val, i)
-#define mrsas_atomic_dec(v) atomic_fetchadd_int(&(v)->val, -1)
-#define mrsas_atomic_inc(v) atomic_fetchadd_int(&(v)->val, 1)
+#define mrsas_atomic_dec(v) atomic_subtract_int(&(v)->val, 1)
+#define mrsas_atomic_inc(v) atomic_add_int(&(v)->val, 1)
/* IOCInit Request message */
typedef struct _MPI2_IOC_INIT_REQUEST {
Modified: stable/12/sys/kern/uipc_mqueue.c
==============================================================================
--- stable/12/sys/kern/uipc_mqueue.c Tue Nov 20 00:43:14 2018
(r340657)
+++ stable/12/sys/kern/uipc_mqueue.c Tue Nov 20 00:55:51 2018
(r340658)
@@ -393,7 +393,7 @@ mqnode_free(struct mqfs_node *node)
static __inline void
mqnode_addref(struct mqfs_node *node)
{
- atomic_fetchadd_int(&node->mn_refcount, 1);
+ atomic_add_int(&node->mn_refcount, 1);
}
static __inline void
Modified: stable/12/sys/kern/vfs_bio.c
==============================================================================
--- stable/12/sys/kern/vfs_bio.c Tue Nov 20 00:43:14 2018
(r340657)
+++ stable/12/sys/kern/vfs_bio.c Tue Nov 20 00:55:51 2018
(r340658)
@@ -1656,7 +1656,7 @@ buf_alloc(struct bufdomain *bd)
if (freebufs > 0)
bp = uma_zalloc(buf_zone, M_NOWAIT);
if (bp == NULL) {
- atomic_fetchadd_int(&bd->bd_freebuffers, 1);
+ atomic_add_int(&bd->bd_freebuffers, 1);
bufspace_daemon_wakeup(bd);
counter_u64_add(numbufallocfails, 1);
return (NULL);
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