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Revert "sched, x86: Optimize branch hint in __switch_to()" 

This reverts commit a3a1de0c34.

Commit 8ec6993d9f cleared the es
and ds selectors, so the original branch hints are correct now.
Therefore the branch hint doesn't need to be removed.

Signed-off-by: Tim Blechmann <tim@klingt.org>
LKML-Reference: <4B16503A.8030508@klingt.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Tim Blechmann 2009-12-02 12:32:10 +01:00 committed by Ingo Molnar
parent bdddd2963c
commit be8147e686
1 changed files with 3 additions and 2 deletions
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5
arch/x86/kernel/process_64.c
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@ -406,10 +406,11 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
* This won't pick up thread selector changes, but I guess that is ok.
*/
savesegment(es, prev->es);
if (next->es | prev->es)
if (unlikely(next->es | prev->es))
loadsegment(es, next->es);
savesegment(ds, prev->ds);
if (next->ds | prev->ds)
if (unlikely(next->ds | prev->ds))
loadsegment(ds, next->ds);