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| author | jhb <jhb@FreeBSD.org> | 2004-11-12 18:40:22 +0000 |
|---|---|---|
| committer | jhb <jhb@FreeBSD.org> | 2004-11-12 18:40:22 +0000 |
| commit | ba0a3a16d668889c5d91cda6494213380d2564ae (patch) | |
| tree | c2e076ee5bf81cf214facbf0c3921bc7b6b4d339 /sys/i386/include | |
| parent | dcb9e1376165c69a2ace175067eab35c0a335d9f (diff) | |
| download | FreeBSD-src-ba0a3a16d668889c5d91cda6494213380d2564ae.zip FreeBSD-src-ba0a3a16d668889c5d91cda6494213380d2564ae.tar.gz | |
- Use the SMP style ops for atomic_load/store() in userland so that
libraries and binaries will work on both UP and SMP machines.
- Remove unnecessary gcc memory barrier from the UP atomic_store() op.
Submitted by: bde
Diffstat (limited to 'sys/i386/include')
| -rw-r--r-- | sys/i386/include/atomic.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/sys/i386/include/atomic.h b/sys/i386/include/atomic.h index 5f5f197..4d21b38 100644 --- a/sys/i386/include/atomic.h +++ b/sys/i386/include/atomic.h @@ -172,7 +172,7 @@ atomic_cmpset_int(volatile u_int *dst, u_int exp, u_int src) #if defined(__GNUC__) || defined(__INTEL_COMPILER) -#if !defined(SMP) +#if defined(KERNEL) && !defined(SMP) /* * We assume that a = b will do atomic loads and stores. However, on a @@ -191,7 +191,6 @@ atomic_load_acq_##TYPE(volatile u_##TYPE *p) \ static __inline void \ atomic_store_rel_##TYPE(volatile u_##TYPE *p, u_##TYPE v)\ { \ - __asm __volatile("" : : : "memory"); \ *p = v; \ } \ struct __hack |
