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| author | Markus Metzger <markus.t.metzger@intel.com> | 2009-04-03 16:43:34 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-07 13:36:12 +0200 |
| commit | a26b89f05d194413c7238e0bea071054f6b5d3c8 (patch) | |
| tree | 8a2efbabce49ed747fe9b54e282e04b82d1b9982 /include/linux | |
| parent | cac94f979326212831c0ea44ed9ea1622b4f4e93 (diff) | |
| download | op-kernel-dev-a26b89f05d194413c7238e0bea071054f6b5d3c8.zip op-kernel-dev-a26b89f05d194413c7238e0bea071054f6b5d3c8.tar.gz | |
sched, hw-branch-tracer: add wait_task_context_switch() function to sched.h
Add a function to wait until some other task has been
switched out at least once.
This differs from wait_task_inactive() subtly, in that the
latter will wait until the task has left the CPU.
Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Cc: markus.t.metzger@gmail.com
Cc: roland@redhat.com
Cc: eranian@googlemail.com
Cc: oleg@redhat.com
Cc: juan.villacis@intel.com
Cc: ak@linux.jf.intel.com
LKML-Reference: <20090403144549.794157000@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/sched.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index b94f354..a5b9a83 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1993,8 +1993,10 @@ extern void set_task_comm(struct task_struct *tsk, char *from); extern char *get_task_comm(char *to, struct task_struct *tsk); #ifdef CONFIG_SMP +extern void wait_task_context_switch(struct task_struct *p); extern unsigned long wait_task_inactive(struct task_struct *, long match_state); #else +static inline void wait_task_context_switch(struct task_struct *p) {} static inline unsigned long wait_task_inactive(struct task_struct *p, long match_state) { |
