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Re: [PATCH] Avoid unnecessary busy loop in __lll_timedlock_wait on ARM.
On Sat, Feb 9, 2013 at 11:56 PM, David Miller <email@example.com> wrote:
> From: "Carlos O'Donell" <firstname.lastname@example.org>
> Date: Sat, 09 Feb 2013 09:55:43 -0500
>> I'd seen the *other* sparc pre-v9 implementation that used 64 global
>> locks per-library and that seemed signal unsafe and prone to deadlocks.
> All of these pre-v9 things are signal unsafe and deadlock.
> I thought about doing the kernel atomic emulation other platforms have
> adopted, but frankly these cpus are so old and deprecated that they're
> not worth doing the work for.
> And by the time we'd propagate all of this infrastructure necessary to
> support this kind of scheme, those cpus would be even more outdated.
> Even debian does v9-only build on 32-bit.
Eminently practical. Just curious. Thanks for verifying what I suspected.