tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
ia64: define __smp_xxx
This defines __smp_xxx barriers for ia64,
for use by virtualization.
smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
This reduces the amount of arch-specific boiler-plate code.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
+5
-9
+5
-9
arch/ia64/include/asm/barrier.h
+5
-9
arch/ia64/include/asm/barrier.h
···
42
42
#define dma_rmb() mb()
43
43
#define dma_wmb() mb()
44
44
45
-
#ifdef CONFIG_SMP
46
-
# define smp_mb() mb()
47
-
#else
48
-
# define smp_mb() barrier()
49
-
#endif
45
+
# define __smp_mb() mb()
50
46
51
-
#define smp_mb__before_atomic() barrier()
52
-
#define smp_mb__after_atomic() barrier()
47
+
#define __smp_mb__before_atomic() barrier()
48
+
#define __smp_mb__after_atomic() barrier()
53
49
54
50
/*
55
51
* IA64 GCC turns volatile stores into st.rel and volatile loads into ld.acq no
56
52
* need for asm trickery!
57
53
*/
58
54
59
-
#define smp_store_release(p, v) \
55
+
#define __smp_store_release(p, v) \
60
56
do { \
61
57
compiletime_assert_atomic_type(*p); \
62
58
barrier(); \
63
59
WRITE_ONCE(*p, v); \
64
60
} while (0)
65
61
66
-
#define smp_load_acquire(p) \
62
+
#define __smp_load_acquire(p) \
67
63
({ \
68
64
typeof(*p) ___p1 = READ_ONCE(*p); \
69
65
compiletime_assert_atomic_type(*p); \