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| author |   Benjamin LaHaise <bcrl@kvack.org> | 2009-01-10 23:00:22 -0500 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2009-01-11 05:05:33 +0100 |
| commit | 7106a5ab89c50c6b5aadea0850b40323804a922d (patch) | |
| tree | d4ce5df5ff89da035b6dd092bbe089757def7c34 /arch/x86/kernel/cpu/proc.c | |
| parent | Linux 2.6.29-rc1 (diff) | |
| download | wireguard-linux-7106a5ab89c50c6b5aadea0850b40323804a922d.tar.xz wireguard-linux-7106a5ab89c50c6b5aadea0850b40323804a922d.zip | |
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>
Diffstat (limited to 'arch/x86/kernel/cpu/proc.c')
0 files changed, 0 insertions, 0 deletions