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Re: [PATCH] Avoid unnecessary busy loop in __lll_timedlock_wait on ARM.
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support this kind of scheme, those cpus would be even more outdated.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.