| commit | 7106a5ab89c50c6b5aadea0850b40323804a922d | [log] [tgz] |
|---|---|---|
| author | Benjamin LaHaise <bcrl@kvack.org> | Sat Jan 10 23:00:22 2009 -0500 |
| committer | Ingo Molnar <mingo@elte.hu> | Sun Jan 11 05:05:33 2009 +0100 |
| tree | d4ce5df5ff89da035b6dd092bbe089757def7c34 | |
| parent | c59765042f53a79a7a65585042ff463b69cb248c [diff] |
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>