Linux kernel version support policy

[Joseph S. Myers]

On Wed, 29 Jan 2014, Torvald Riegel wrote:

> On Tue, 2014-01-28 at 02:15 +0000, Joseph S. Myers wrote:
> > __ASSUME_FUTEX_LOCK_PI, __ASSUME_PRIVATE_FUTEX, 
> > __ASSUME_FUTEX_CLOCK_REALTIME, __ASSUME_REQUEUE_PI, 
> 
> Being able to assume these would simplify the lock/condvar/semaphore
> implementations somewhat.

I don't know if we'll be able to assume those for all architectures.  At 
least __ASSUME_FUTEX_LOCK_PI is covered by Aurelien's bug 9894, indicating 
that at least as of the patches there it wasn't supported by all 
architectures, and I don't know if __ASSUME_REQUEUE_PI has the same 
requirements but based on 
ports/sysdeps/unix/sysv/linux/m68k/kernel-features.h I assume it does.

-- 
Joseph S. Myers
joseph@codesourcery.com