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Subject: Re: wake_up from interrupt handler
From: Arjan van de Ven <arjanv@redhat.com>
To: Amol Lad <dal_loma@yahoo.com>
Cc: linux-kernel@vger.kernel.org
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On Mon, 2002-10-07 at 16:25, Amol Lad wrote:
> In this code too.. lost-wakeup problem is not solved
>=20
> if (event_occured)
>   else=20
>     schedule();
>=20
> what if in check ' if(event_occured) ' goes to 'else'
> and before calling schedule() my ISR interrupted this
> thread and set the event..

that's fine; the wake_up() will mark your process as TASK_RUNNING at
which point the schedule() is effectively a NOP, at which point your
event loop just loops immediatly again ->  no problem

always keep interrupts enabled during this, no need to block them ;)

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