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From: Al Viro <viro@ZenIV.linux.org.uk>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	linux-kernel@vger.kernel.org, Jeff Garzik <jeff@garzik.org>
Subject: Re: [PATCH 5/5] typesafe: TIMER_INITIALIZER and setup_timer
Date: Mon, 10 Mar 2008 02:03:14 +0000	[thread overview]
Message-ID: <20080310020314.GG27894@ZenIV.linux.org.uk> (raw)
In-Reply-To: <200803101207.20151.rusty@rustcorp.com.au>

On Mon, Mar 10, 2008 at 12:07:19PM +1100, Rusty Russell wrote:

>    Worst, I can't see a way to apply your technique in general, for 
> non-void-returning functions (eg. interrupt handlers).

Interrupt handlers are easy.  Just switch irqreturn_t from into to
struct {int x;}, adjust the rest of irqreturn.h accordingly, add
extern void want_irqreturn_t(irqreturn_t);
then replace 0 ? (f)(x) : (void)0 with want_irqreturn_t((f)(x)) in the
expression under sizeof and we are all set (assuming Jeff's elimination
of irq number in place by then or done in parallel).

  reply	other threads:[~2008-03-10  2:03 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-04 12:11 [PATCH 0/5] typesafe callbacks Rusty Russell
2008-02-04 12:14 ` [PATCH 1/5] cast_if_type: allow macros functions which take more than one type Rusty Russell
2008-02-04 12:16   ` [PATCH 2/5] typesafe: Convert stop_machine Rusty Russell
2008-02-04 12:17     ` [PATCH 3/5] typesafe: kthread_create and kthread_run Rusty Russell
2008-02-04 12:18       ` [PATCH 4/5] typesafe: request_irq and devm_request_irq Rusty Russell
2008-02-04 12:19         ` [PATCH 5/5] typesafe: TIMER_INITIALIZER and setup_timer Rusty Russell
2008-02-04 14:57           ` Al Viro
2008-02-05  3:41             ` Rusty Russell
2008-03-05  2:55               ` Rusty Russell
2008-03-06 10:40                 ` Al Viro
2008-03-10  1:07                   ` Rusty Russell
2008-03-10  2:03                     ` Al Viro [this message]
2008-03-10  3:42                       ` Rusty Russell

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