From: Nick Piggin <nickpiggin@yahoo.com.au>
Now that init_idle does not remove tasks from the runqueue, those
architectures that use kernel_thread instead of copy_process for the idle
task will break. To fix, ensure that CLONE_IDLETASK tasks are not put on
the runqueue in the first place.
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
25-akpm/kernel/fork.c | 12 +++++++-----
1 files changed, 7 insertions(+), 5 deletions(-)
diff -puN kernel/fork.c~kernelthread-idle-fix-2 kernel/fork.c
--- 25/kernel/fork.c~kernelthread-idle-fix-2 2004-07-28 22:08:38.756139160 -0700
+++ 25-akpm/kernel/fork.c 2004-07-28 22:08:38.760138552 -0700
@@ -1214,11 +1214,13 @@ long do_fork(unsigned long clone_flags,
set_tsk_thread_flag(p, TIF_SIGPENDING);
}
- if (!(clone_flags & CLONE_STOPPED))
- wake_up_new_task(p, clone_flags);
- else
- p->state = TASK_STOPPED;
- ++total_forks;
+ if (likely(!(clone_flags & CLONE_IDLETASK))) {
+ if (!(clone_flags & CLONE_STOPPED))
+ wake_up_new_task(p, clone_flags);
+ else
+ p->state = TASK_STOPPED;
+ ++total_forks;
+ }
if (unlikely (trace)) {
current->ptrace_message = pid;
_