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[PATCH] m68k: introduce setup_thread_stack() and end_of_stack()

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encapsulates the rest of arch-dependent operations with thread_info access.
Two new helpers - setup_thread_stack() and end_of_stack().  For normal case
the former consists of copying thread_info of parent to new thread_info and
the latter returns pointer immediately past the end of thread_info.

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Al Viro
2005-11-13 16:06:56 -08:00
committed by Linus Torvalds
parent a1261f5461
commit 10ebffde3d
3 changed files with 14 additions and 4 deletions
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3
kernel/fork.c
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@ -171,10 +171,9 @@ static struct task_struct *dup_task_struct(struct task_struct *orig)
return NULL;
}
*ti = *orig->thread_info;
*tsk = *orig;
tsk->thread_info = ti;
ti->task = tsk;
setup_thread_stack(tsk, orig);
/* One for us, one for whoever does the "release_task()" (usually parent) */
atomic_set(&tsk->usage,2);