[RFC][PATCH 1/5] x86: Remove const_udelay() caring about which cpu var it uses

[Steven Rostedt]

From: Steven Rostedt <srostedt@xxxxxxxxxx>

The __const_udelay() code originally used raw_smp_processor_id()
in its calculations for a delaying. Probably because if it were
to migrate, it would take much longer to do so than the requested
delay.

Switch from this_cpu_read() to __this_cpu_read() to document that
the read is racy and we do not care.

Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
 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 fc45ba8..1b9bde5 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"
-		(this_cpu_read(cpu_info.loops_per_jiffy) * (HZ/4)));
+		(__this_cpu_read(cpu_info.loops_per_jiffy) * (HZ/4)));
 
 	__delay(++xloops);
 }
-- 
1.7.5.4


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