On Mon, 28 Aug 2000, Ingo Molnar wrote:
>
> during 2.3 we got rid of 99% of lock_kernel()s within the core kernel.
> IMHO the time has arrived to get rid of the big kernel spinlock forever -
> by changing it to a ordinary semaphore. Most lock_kernel() code paths are
Umm... I would not do that. Reason: right now BKL can be acquired while we
are holding a spinlock. It's a bad idea, but it's possible. With your
change it becomes deadly. Another reason: currently BKL can be taken in
the middle of operations on per-CPU data. It will not block, so nothing
will get that CPU while we are in lock_kernel(). Not true with your patch.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Thu Aug 31 2000 - 21:00:21 EST