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authorChristoph Lameter <clameter@engr.sgi.com>2006-03-02 02:54:35 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-02 08:33:07 -0800
commit685db65e422bfa523b8a9dacb5a658b42b254f05 (patch)
tree0d7eba52e7c9584a2e3b4f2cd1842bf55e67c2d0 /kernel/time.c
parent7f99f06f01aa9460b5a18f1b0e0900c90d0a84fc (diff)
[PATCH] time_interpolator: Use readq_relaxed() instead of readq().
On some platforms readq performs additional work to make sure I/O is done in a coherent way. This is not needed for time retrieval as done by the time interpolator. So we can use readq_relaxed instead which will improve performance. It affects sparc64 and ia64 only. Apparently it makes a significant difference on ia64. Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: john stultz <johnstul@us.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/time.c')
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