linux-kernel - Re: [PATCH 1/2] HAVE_SET_RESTORE

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Date:	Fri, 11 Apr 2008 14:40:34 +0100
From:	David Woodhouse <dwmw2@...radead.org>
To:	Russell King <rmk+lkml@....linux.org.uk>
Cc:	Roland McGrath <roland@...hat.com>,
	"Linus Torvalds <torvalds@...ux-foundation.org>Andrew Morton" 
	<akpm@...ux-foundation.org>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	linux-s390@...r.kernel.org, tony.luck@...el.com,
	linux-ia64@...r.kernel.org, linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org, miles@....org, geert@...ux-m68k.org,
	zippel@...ux-m68k.org
Subject: Re: [PATCH 1/2] HAVE_SET_RESTORE_SIGMASK

On Thu, 2008-04-10 at 21:32 +0100, Russell King wrote: 
> On Wed, Apr 09, 2008 at 12:45:32PM +0100, David Woodhouse wrote:
> > On Fri, 2008-03-28 at 20:11 -0700, Roland McGrath wrote:
> > > Change all the #ifdef TIF_RESTORE_SIGMASK conditionals in non-arch
> > > code to #ifdef HAVE_SET_RESTORE_SIGMASK.
> > 
> > That ifdef was only supposed to be a temporary thing until all
> > architectures had implemented TIF_RESTORE_SIGMASK anyway.
> > 
> > It looks like only ARM, v850 and m68k which are still missing it; if
> > those three architectures can catch up, then hopefully it can die off
> > completely quite soon.
> 
> Well, we don't have the pselect/ppoll/epoll_wait syscalls and there's
> been no demand for them, so I don't particularly see the point of
> going to the trouble of adding support for something no one's
> interested in using.

You're not likely to see demand for it from users. I believe glibc will
emulate it as best it can (which is not very well), and things will
appear to work.... most of the time.

-- 
dwmw2

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