linux-kernel - Re: [RFC PATCH 4/6] Make DRM use the tasklet is-sched API

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Message-Id: <1182496085.3228.26.camel@dhcp193.mvista.com>
Date:	Fri, 22 Jun 2007 00:08:04 -0700
From:	Daniel Walker <dwalker@...sta.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Hellwig <hch@...radead.org>,
	john stultz <johnstul@...ibm.com>,
	Oleg Nesterov <oleg@...sign.ru>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Dipankar Sarma <dipankar@...ibm.com>,
	"David S. Miller" <davem@...emloft.net>, matthew.wilcox@...com,
	kuznet@....inr.ac.ru
Subject: Re: [RFC PATCH 4/6] Make DRM use the tasklet is-sched API

On Fri, 2007-06-22 at 08:49 +0200, Thomas Gleixner wrote:
> On Thu, 2007-06-21 at 23:36 -0700, Daniel Walker wrote:
> > On Fri, 2007-06-22 at 00:00 -0400, Steven Rostedt wrote:
> > > plain text document attachment (tasklet-driver-hacks.patch)
> > > Update the DRM driver to use the new tasklet API, which does not rely
> > > on the tasklet implementation details.
> > > 
> > > Signed-off-by: Steven Rostedt <rostedt@...dmis.org>
> > > 
> > > 
> > > Index: linux-2.6.21-rt9/drivers/char/drm/drm_irq.c
> > > ===================================================================
> > > --- linux-2.6.21-rt9.orig/drivers/char/drm/drm_irq.c
> > > +++ linux-2.6.21-rt9/drivers/char/drm/drm_irq.c
> > > @@ -461,7 +461,7 @@ void drm_locked_tasklet(drm_device_t *de
> > >  	static DECLARE_TASKLET(drm_tasklet, drm_locked_tasklet_func, 0);
> > >  
> > >  	if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ) ||
> > > -	    test_bit(TASKLET_STATE_SCHED, &drm_tasklet.state))
> > > +	    tasklet_is_scheduled(&drm_tasklet))
> > >  		return;
> > >  
> > >  	spin_lock_irqsave(&dev->tasklet_lock, irqflags);
> > > 
> > 
> > 
> > No sense in having a patch just for this, may as well merge this with
> > patch 3 ..
> 
> Wrong. patch 3 adds the API and this one makes use of it. Stevens split
> makes perfectly sense.

Clearly it doesn't make sense to me ;) .. The patches are too small to
split them up that way ..

Daniel

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