linux-kernel - Re: [RFC] Introduce __ARCH_WANT_SYS

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Message-ID: <20080422153849.GH19802@phobos.i.cabal.ca>
Date:	Tue, 22 Apr 2008 11:38:49 -0400
From:	Kyle McMartin <kyle@...artin.ca>
To:	Will Newton <will.newton@...il.com>
Cc:	Kyle McMartin <kyle@...artin.ca>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	linux-arch@...r.kernel.org
Subject: Re: [RFC] Introduce __ARCH_WANT_SYS_SYSFS

On Tue, Apr 22, 2008 at 04:34:03PM +0100, Will Newton wrote:
> On Tue, Apr 22, 2008 at 4:24 PM, Kyle McMartin <kyle@...artin.ca> wrote:
> > On Tue, Apr 22, 2008 at 04:16:17PM +0100, Will Newton wrote:
> >  > It can be done with Kconfig. Whether it should be or not depends on
> >  > your point of view, hence RFC. Currently __ARCH_WANT macros is the way
> >  > syscalls are enabled and disabled across architectures. If there's
> >  > consensus that it should be done via Kconfig that could certainly be
> >  > implmented, but that's a different patch.
> >  >
> >
> >  It's currently done in unistd.h for hysterical raisins. All new
> >  conditional syscalls have been done in Kconfig.
> 
> Do you have a syscall in mind that does this in the correct way?
> 

epoll is the most immediate example at hand, since it touches
fs/compat.c similarly to how you would be touching fs/filesystem.c, and
touches kernel/sys_ni.c and init/Kconfig in much the same way.

> BTW, don't blame the blackfin guys for this, I'm thinking about future
> architectures that may be added rather than any existing ones. ;-)
> 

Meh. :)

cheers, Kyle
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