From: Sergei Organov <osv@javad.com>
To: ecos-discuss@sources.redhat.com
Subject: [ECOS] Re: DSR stops running after heavy interrupts. Spurious Interrupt!
Date: Tue, 11 Apr 2006 04:15:00 -0000 [thread overview]
Message-ID: <e1faam$omn$2@sea.gmane.org> (raw)
In-Reply-To: <m33bgl8i0v.fsf@xl5.calivar.com>
Nick Garnett <nickg@ecoscentric.com> writes:
> "Joe Porthouse" <jporthouse@toptech.com> writes:
[...]
>> Was there a reason why interrupt_end() should not be
>> called on spurious interrupts?
>
> I guess it was an attempt to avoid doing more than the absolute
> minimum on spurious interrupts. It looks like there is a bug in there,
> since the scheduler lock doesn't get decremented. In general, spurious
> interrupts shouldn't happen, which is why it has managed to lurk here
> for so long.
Well, I think the right question here is why scheduler lock is
incremented at all? I mean if SMP implementations happen to increment it
inside the interrupt_end(), then it should be safe for ARM HAL to
increment it just before calling interrupt_end(), isn't it? This way
spurious interrupt handling code will avoid both scheduler lock
increment and interrupt_end() call. Makes sense?
-- Sergei.
--
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next prev parent reply other threads:[~2006-04-11 4:15 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-05 21:09 [ECOS] DSR stops running after heavy interrupts Joe Porthouse
2006-04-06 6:49 ` Andrew Lunn
2006-04-06 9:02 ` Stefan Sommerfeld
2006-04-06 21:09 ` Joe Porthouse
2006-04-06 21:19 ` Andrew Lunn
2006-04-08 4:18 ` [ECOS] DSR stops running after heavy interrupts. Bug found? Joe Porthouse
2006-04-09 12:33 ` Andrew Lunn
2006-04-10 4:50 ` [ECOS] " Sergei Organov
2006-04-10 9:36 ` Nick Garnett
2006-04-10 10:44 ` Sergei Organov
2006-04-10 10:59 ` Nick Garnett
2006-04-10 11:15 ` Sergei Organov
2006-04-10 13:20 ` Joe Porthouse
2006-04-10 16:41 ` [ECOS] Re: DSR stops running after heavy interrupts. Spurious Interrupt! Joe Porthouse
2006-04-10 17:20 ` Nick Garnett
2006-04-10 17:44 ` Andrew Lunn
2006-04-10 20:49 ` Joe Porthouse
2006-04-11 4:07 ` Sergei Organov
2006-04-11 8:31 ` Nick Garnett
2006-04-11 4:15 ` Sergei Organov [this message]
2006-04-11 8:43 ` Nick Garnett
2006-04-13 7:58 ` [ECOS] How to use the ARM directive DCB in Vectors.S Birahim Larou Fall
2006-04-13 13:28 ` Andrew Lunn
2006-04-13 13:32 ` Birahim Larou Fall
2006-04-21 7:40 ` [ECOS] " Daniel Néri
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