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authorRichard Weinberger <richard@nod.at>2015-03-18 21:42:54 +0100
committerRichard Weinberger <richard@nod.at>2015-04-13 21:00:58 +0200
commit28fa468f53163bc0b867b4cc75a9e36e7ed4dbbd (patch)
tree5421b0046c8143797630da85db9a9b72c488f9f2 /arch/x86/um
parentd0b5e15f0c0fdd759dd3dd48dc2dc2e7199e0da0 (diff)
um: Remove broken SMP support
At times where UML used the TT mode to operate it had kind of SMP support. It never got finished nor was stable. Let's rip out that cruft and stop confusing developers which do tree-wide SMP cleanups. If someone wants SMP support UML it has do be done from scratch. Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/x86/um')
-rw-r--r--arch/x86/um/asm/barrier.h11
1 files changed, 0 insertions, 11 deletions
diff --git a/arch/x86/um/asm/barrier.h b/arch/x86/um/asm/barrier.h
index 2d7d9a1f5b53..aec75a5d8722 100644
--- a/arch/x86/um/asm/barrier.h
+++ b/arch/x86/um/asm/barrier.h
@@ -36,22 +36,11 @@
#endif /* CONFIG_X86_PPRO_FENCE */
#define dma_wmb() barrier()
-#ifdef CONFIG_SMP
-
-#define smp_mb() mb()
-#define smp_rmb() dma_rmb()
-#define smp_wmb() barrier()
-#define set_mb(var, value) do { (void)xchg(&var, value); } while (0)
-
-#else /* CONFIG_SMP */
-
#define smp_mb() barrier()
#define smp_rmb() barrier()
#define smp_wmb() barrier()
#define set_mb(var, value) do { var = value; barrier(); } while (0)
-#endif /* CONFIG_SMP */
-
#define read_barrier_depends() do { } while (0)
#define smp_read_barrier_depends() do { } while (0)