diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-07-10 14:57:56 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-07-10 14:24:05 -0700 |
| commit | c99e6efe1ba04561e7d93a81f0be07e37427e835 (patch) | |
| tree | 8a1743463ef9676e68b9c3971f0bbeea04111bdd /include/linux/sched.h | |
| parent | 2a6f86bc5ed4af2ff04bc927eb77789c70e53a1e (diff) | |
| download | lwn-c99e6efe1ba04561e7d93a81f0be07e37427e835.tar.gz lwn-c99e6efe1ba04561e7d93a81f0be07e37427e835.zip | |
sched: INIT_PREEMPT_COUNT
Pull the initial preempt_count value into a single
definition site.
Maintainers for: alpha, ia64 and m68k, please have a look,
your arch code is funny.
The header magic is a bit odd, but similar to the KERNEL_DS
one, CPP waits with expanding these macros until the
INIT_THREAD_INFO macro itself is expanded, which is in
arch/*/kernel/init_task.c where we've already included
sched.h so we're good.
Cc: tony.luck@intel.com
Cc: rth@twiddle.net
Cc: geert@linux-m68k.org
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 0085d758d645..2a99f1c15cf8 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -498,6 +498,12 @@ struct task_cputime { .sum_exec_runtime = 0, \ } +/* + * Disable preemption until the scheduler is running. + * Reset by start_kernel()->sched_init()->init_idle(). + */ +#define INIT_PREEMPT_COUNT (1) + /** * struct thread_group_cputimer - thread group interval timer counts * @cputime: thread group interval timers. |