linux/arch/x86/include
Benjamin LaHaise 7106a5ab89 x86-64: remove locked instruction from switch_to()
Impact: micro-optimization

The patch below removes an unnecessary locked instruction from
switch_to().  TIF_FORK is only ever set in copy_thread() on initial
process creation, and gets cleared during the first scheduling of the
process.  As such, it is safe to use an unlocked test for the flag
within switch_to().

Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-11 05:05:33 +01:00
..
asm x86-64: remove locked instruction from switch_to() 2009-01-11 05:05:33 +01:00