diff options
| author | Cliff Wickman <cpw@sgi.com> | 2009-01-15 09:51:20 -0600 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-01-15 23:48:20 +0100 |
| commit | 18c07cf530cf4aa8b7551801f68ed40db5ee4e45 (patch) | |
| tree | 0e57822a4d34535a0da87c3e2187b3264c26c856 /arch/x86/include/asm/io.h | |
| parent | 4a13ad0bd8869bb491c67918662f9b1852595af5 (diff) | |
x86, UV: cpu_relax in uv_wait_completion
The function uv_wait_completion() spins on reads of a memory-mapped
register, waiting for completion of BAU hardware replies.
It should call "cpu_relax()" between those reads to improve performance
on hyperthreaded configurations.
Signed-off-by: Cliff Wickman <cpw@sgi.com>
Acked-by: Jack Steiner <steiner@sgi.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/include/asm/io.h')
0 files changed, 0 insertions, 0 deletions