From: Luben Tuikov <luben@splentec.com>
To: linux-kernel@vger.kernel.org
Subject: reschedule twice from wake_up()?
Date: Tue, 12 Feb 2002 14:40:53 -0500 [thread overview]
Message-ID: <3C696FC5.E2DD43D7@splentec.com> (raw)
Scenario:
atomic_t start, end;
current is the only task in wq;
consumer does: wait_even_interruptible(wq, start != end)
producer does: end++; wakeup_interruptible(wq)
Is it possible that the task in wq will be scheduled twice,
once since end >= start (mod something) and again since,
wakeup_interruptible was called?
--
Luben
reply other threads:[~2002-02-12 19:41 UTC|newest]
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