Commit 1cfc05cb authored by Vineet Gupta's avatar Vineet Gupta
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ARC: cpu_relax() to be compiler barrier even for UP

cpu_relax() on ARC has been barrier only for SMP (and no-op for UP). Per
recent discussions, it is safer to make it a compiler barrier


Acked-by: default avatarPeter Zijlstra <>
Signed-off-by: default avatarVineet Gupta <>
parent a6416f57
......@@ -57,11 +57,7 @@ struct task_struct;
* A lot of busy-wait loops in SMP are based off of non-volatile data otherwise
* get optimised away by gcc
#define cpu_relax() __asm__ __volatile__ ("" : : : "memory")
#define cpu_relax() do { } while (0)
#define cpu_relax_lowlatency() cpu_relax()
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