diff options
| author | Christoph Lameter <cl@linux.com> | 2010-12-16 21:14:43 +0300 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2011-01-04 08:08:55 +0300 |
| commit | 357089fca91f639dd005ae0721f5f932b4f276ab (patch) | |
| tree | 0af40092c4589d7732d10b8da2d4fb52531f504a | |
| parent | c1955b5f3a95717ce1f5235f6e9968da068e3183 (diff) | |
| download | linux-357089fca91f639dd005ae0721f5f932b4f276ab.tar.xz | |
x86: udelay: Use this_cpu_read to avoid address calculation
The code will use a segment prefix instead of doing the lookup and
calculation.
Signed-off-by: Christoph Lameter <cl@linux.com>
Acked-by: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
| -rw-r--r-- | arch/x86/lib/delay.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/lib/delay.c b/arch/x86/lib/delay.c index ff485d361182..fc45ba887d05 100644 --- a/arch/x86/lib/delay.c +++ b/arch/x86/lib/delay.c @@ -121,7 +121,7 @@ inline void __const_udelay(unsigned long xloops) asm("mull %%edx" :"=d" (xloops), "=&a" (d0) :"1" (xloops), "0" - (cpu_data(raw_smp_processor_id()).loops_per_jiffy * (HZ/4))); + (this_cpu_read(cpu_info.loops_per_jiffy) * (HZ/4))); __delay(++xloops); } |