Messages in this thread | | | Date | Fri, 20 Sep 2002 13:15:25 +0100 | From | Russell King <> | Subject | Re: [patch] generic-pidhash-2.5.36-D4, BK-curr |
| |
On Fri, Sep 20, 2002 at 03:43:47PM +0400, Oleg Drokin wrote: > On Fri, Sep 20, 2002 at 11:40:16AM +0200, Ingo Molnar wrote: > > we need a cmpxchg() function in the generic library, using a spinlock. > > But this is not safe for arches that provides SMP but does not provide > cmpxchg in hadware, right? > I mean it is only safe to use such spinlock-based function if > all other places read and write this value via special functions that are > also taking this spinlock.
Correct.
> Do you think we can count on this?
I don't think so.
-- Russell King (rmk@arm.linux.org.uk) The developer of ARM Linux http://www.arm.linux.org.uk/personal/aboutme.html
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |