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From: Amol Lad <dal_loma@yahoo.com>
To: linux-kernel@vger.kernel.org
Subject: wake_up from interrupt handler
Date: Mon, 7 Oct 2002 05:41:21 -0700 (PDT)	[thread overview]
Message-ID: <20021007124121.37417.qmail@web12407.mail.yahoo.com> (raw)

Hi,
 I have a kernel thread which did add_to_wait_queue()
to wait for an event. 
The event for which above thread is waiting occurs in
an interrupt handler that calls wake_up() to wake the
above thread. 
Now I am faced with a 'lost wakeup' problem, in which
the    
kernel thread checks whether event occured, he finds
it to be 'not-occured' but before calling
add_to_wait_queue(), interrupt handler detects that
the event has occured and calls wake_up().
My thread sleeps forever.

I know some new APIs are provided in recent 2.5
kernel, but how to avoid this in 2.4.18

please CC me 

Thanks
Amol


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             reply	other threads:[~2002-10-07 12:35 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-10-07 12:41 Amol Lad [this message]
2002-10-07 13:04 ` wake_up from interrupt handler Arjan van de Ven
2002-10-07 14:25   ` Amol Lad
2002-10-07 15:36     ` Arjan van de Ven
2002-10-07 17:44     ` Mike Galbraith
2002-10-07 22:52 ` Rui Sousa

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