diff options
| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2006-12-06 20:14:03 -0500 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2006-12-06 20:14:03 -0500 |
| commit | ec7fcaabbfb3c5bd5189f857b6ac7bb9745ef291 (patch) | |
| tree | 9730e2849a9943e26f8d32f394296fd685b85e39 /arch/i386/kernel/process.c | |
| parent | b2938f880890ebfcccad356275e0000193153623 (diff) | |
[PATCH] i386: Implement "current" with the PDA
Use the pcurrent field in the PDA to implement the "current" macro. This ends
up compiling down to a single instruction to get the current task.
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Chuck Ebbert <76306.1226@compuserve.com>
Cc: Zachary Amsden <zach@vmware.com>
Cc: Jan Beulich <jbeulich@novell.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Diffstat (limited to 'arch/i386/kernel/process.c')
| -rw-r--r-- | arch/i386/kernel/process.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/i386/kernel/process.c b/arch/i386/kernel/process.c index dc4272545179..8749b10d3805 100644 --- a/arch/i386/kernel/process.c +++ b/arch/i386/kernel/process.c | |||
| @@ -684,6 +684,7 @@ struct task_struct fastcall * __switch_to(struct task_struct *prev_p, struct tas | |||
| 684 | if (unlikely(prev->fs | next->fs)) | 684 | if (unlikely(prev->fs | next->fs)) |
| 685 | loadsegment(fs, next->fs); | 685 | loadsegment(fs, next->fs); |
| 686 | 686 | ||
| 687 | write_pda(pcurrent, next_p); | ||
| 687 | 688 | ||
| 688 | /* | 689 | /* |
| 689 | * Restore IOPL if needed. | 690 | * Restore IOPL if needed. |