Date: Tue, 26 Aug 2003 14:56:36 -0300
From: Werner Almesberger <wa@almesberger.net>
To: Juergen Quade <quade@hsnr.de>, kuznet@ms2.inr.ac.ru
Cc: Nagendra Singh Tomar <nagendra_tomar@adaptec.com>,
       linux-kernel@vger.kernel.org
Subject: Re: tasklet_kill will always hang for recursive tasklets on a UP
Message-ID: <20030826145636.E1212@almesberger.net>
References: <20030826024808.B3448@almesberger.net> <Pine.LNX.4.44.0308260010480.31955-100000@localhost.localdomain> <20030826043802.D1212@almesberger.net> <20030826083200.GB13812@hsnr.de>
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Juergen Quade wrote:
> Can this work reliable?

Hmm, actually, no. On UP, yes. But on SMP, you might tasklet_kill
while the tasklet is running, but before it has had a chance to
tasklet_schedule itself. tasklet_schedule will have no effect in
this case.

Alexey, if my observation is correct, the property

| * If tasklet_schedule() is called, then tasklet is guaranteed
|   to be executed on some cpu at least once after this.

does not hold if using tasklet_kill on SMP.

- Werner

-- 
  _________________________________________________________________________
 / Werner Almesberger, Buenos Aires, Argentina         wa@almesberger.net /
/_http://www.almesberger.net/____________________________________________/
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