linux-kernel - Re: [RFC] TIF_NOTIFY_RESUME, arch/*/*/*signal*.c and all such

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Message-ID: <20120429225100.GB6871@ZenIV.linux.org.uk>
Date:	Sun, 29 Apr 2012 23:51:00 +0100
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	Oleg Nesterov <oleg@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
	Roland McGrath <roland@...k.frob.com>,
	Greg Ungerer <gerg@...inux.org>
Subject: Re: [RFC] TIF_NOTIFY_RESUME, arch/*/*/*signal*.c and all such

On Fri, Apr 27, 2012 at 08:34:13PM +0100, Al Viro wrote:
> On Fri, Apr 27, 2012 at 09:14:53PM +0200, Geert Uytterhoeven wrote:
> > On Fri, Apr 27, 2012 at 20:45, Al Viro <viro@...iv.linux.org.uk> wrote:
> > >> The only comment I have,
> > >> 38671a3e831ed7327affb24d715f98bb99c80e56 m68k: add TIF_NOTIFY_RESUME and handle it
> > >> forgets to unexport do_signal().
> > >
> > > Meh... ??The thing is, there are _two_ of them. ??signal_mm.c and signal_no.c
> > > badly need merging, with common stuff moved to signal.c. ??I really hate
> > 
> > Greg recently posted a patch to merge them:
> > http://www.spinics.net/lists/linux-m68k/msg04995.html
> 
> Nice...  BTW, could you comment on
>     m68k: don't open-code block_sigmask()
>     m68k: use set_current_blocked in sigreturn/rt_sigreturn
>     m68k-nommu: do_signal() is only called when returning to user mode
>     m68k: add TIF_NOTIFY_RESUME and handle it.
> in signal.git tree?  The last one is really interesting...
> 
> Just pick the current tree - one that was there yesterday had a dumb typo
> in thread_info.h part, so it wouldn't even compile (TIF_NOTIFE_RESUME
> defined instead of TIF_NOTIFY_RESUME ;-/)

BTW, Greg's patch put into the queue in the very beginning, everything rebased
on top of it.
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