From: Thomas Gleixner <tglx@linutronix•de>
To: David Miller <davem@davemloft•net>
Cc: perex@perex•cz, dhowells@redhat•com, prakity@marvell•com,
netdev@vger•kernel.org, chunkeey@googlemail•com,
sonic.zhang@analog•com, klaus.kudielka@ieee•org,
t.sailer@alumni•ethz.ch, khilman@ti•com, eric.dumazet@gmail•com,
jhovold@gmail•com, cyril@ti•com, rmk+kernel@arm•linux.org.uk,
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tklauser@distanz•ch, lucas.demarchi@profusion•mobi,
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geoff@infradead•org, jkosina@suse•cz,
linux-wireless@vger•kernel.org, linux-kernel@vger•kernel.org,
ralf@linux-mips•org, ralph.
Subject: Re: [PATCH 45/62] net: irq: Remove IRQF_DISABLED
Date: Wed, 7 Sep 2011 20:03:14 +0200 (CEST) [thread overview]
Message-ID: <alpine.LFD.2.02.1109072000290.2723@ionos> (raw)
In-Reply-To: <20110907.135234.17759197083710999.davem@davemloft.net>
On Wed, 7 Sep 2011, David Miller wrote:
> From: Thomas Gleixner <tglx@linutronix•de>
> Date: Wed, 7 Sep 2011 19:32:39 +0200 (CEST)
>
> > On Wed, 7 Sep 2011, David Miller wrote:
> >
> >> From: Yong Zhang <yong.zhang0@gmail•com>
> >> Date: Wed, 7 Sep 2011 16:10:42 +0800
> >>
> >> > This flag is a NOOP and can be removed now.
> >> >
> >> > Signed-off-by: Yong Zhang <yong.zhang0@gmail•com>
> >>
> >> I have the same concerns here as I had for the sparc case.
> >>
> >> Some of these drivers might be using IRQF_DISABLED to make sure the
> >> IRQ cannot be delivered until it is explicitly enabled via an
> >> enable_irq() call.
> >>
> >> How is that being accomodated now?
> >
> > Again IRQF_DISABLED never ever had that functionality.
>
> My bad.
>
> But what if these interrupts want interrupts disabled during their
> interrupt handler, for other reasons?
We run ALL interrupt handlers with irqs disabled always.
> This has the potential to break tons of stuff, especially on the
> really old chips which almost no developers have any more but some
> user might try to use.
It won't. We removed IRQF_DISABLED from kernel/irq/* long ago
Thanks,
tglx
next prev parent reply other threads:[~2011-09-07 18:03 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1315383059-3673-1-git-send-email-yong.zhang0@gmail.com>
2011-09-07 8:10 ` [PATCH 39/62] ISDN: irq: Remove IRQF_DISABLED Yong Zhang
2011-09-07 8:10 ` [PATCH 45/62] net: " Yong Zhang
2011-09-07 17:13 ` David Miller
2011-09-07 17:32 ` Thomas Gleixner
2011-09-07 17:52 ` David Miller
2011-09-07 18:03 ` Thomas Gleixner [this message]
2011-09-08 13:41 ` Yong Zhang
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