diff options
| author | Avi Kivity <avi@qumranet.com> | 2007-07-26 13:40:43 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2007-07-26 13:40:43 +0200 |
| commit | e107be36efb2a233833e8c9899039a370e4b2318 (patch) | |
| tree | 655955aa81aefeff441c412adaafe9b51a00ff56 /include/linux/sched.h | |
| parent | b47e8608a08766ef8121cd747d3aaf6c3dc22649 (diff) | |
[PATCH] sched: arch preempt notifier mechanism
This adds a general mechanism whereby a task can request the scheduler to
notify it whenever it is preempted or scheduled back in. This allows the
task to swap any special-purpose registers like the fpu or Intel's VT
registers.
Signed-off-by: Avi Kivity <avi@qumranet.com>
[ mingo@elte.hu: fixes, cleanups ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 7c61b50823fa..7a4de8768748 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -935,6 +935,11 @@ struct task_struct { struct sched_class *sched_class; struct sched_entity se; +#ifdef CONFIG_PREEMPT_NOTIFIERS + /* list of struct preempt_notifier: */ + struct hlist_head preempt_notifiers; +#endif + unsigned short ioprio; #ifdef CONFIG_BLK_DEV_IO_TRACE unsigned int btrace_seq; |