From: Peter Zijlstra <peterz@infradead.org>
To: Remy Bohmer <linux@bohmer.net>
Cc: Thomas Gleixner <tglx@linutronix.de>,
linux-rt-users <linux-rt-users@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Jason Wessel <jason.wessel@windriver.com>
Subject: Re: threaded interrupt handlers: what if hardirq part not disables device interrupt?
Date: Mon, 01 Aug 2011 14:44:38 +0200 [thread overview]
Message-ID: <1312202678.2617.460.camel@laptop> (raw)
In-Reply-To: <CANqCtQ+9ab1qt0WzuC6n6gX9Y8XNcDxaTosUBc94eecj0umuiQ@mail.gmail.com>
On Sun, 2011-07-31 at 16:15 +0200, Remy Bohmer wrote:
> As alternative solution I can do the following as well:
> The driver now has a tasklet used for processing the queue. If I add
> IRQF_NO_THREAD as irq-flag, the thread is not created and the handler
> runs completely in hard-irq context. This seems to work okay, but it
> does not feel as the right solution.
>
> How is this supposed to work? Do you have better ideas how to solve
> situations like this?
This sounds like the total trainwreck known as tty/console, I believe
jwessel and tglx had some ideas on that. Maybe Jason can share what he
knows, I'm not up to speed on that issue.
next prev parent reply other threads:[~2011-08-01 12:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-31 14:15 threaded interrupt handlers: what if hardirq part not disables device interrupt? Remy Bohmer
2011-08-01 12:44 ` Peter Zijlstra [this message]
2011-08-01 17:25 ` Jason Wessel
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