linux-kernel - Re: [PATCH] recalc_sigpending

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Message-Id: <20070517031450.24E3E1F8509@magilla.localdomain>
Date:	Wed, 16 May 2007 20:14:50 -0700 (PDT)
From:	Roland McGrath <roland@...hat.com>
To:	Oleg Nesterov <oleg@...sign.ru>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Steve.Hawkes@...orola.com
Subject: Re: [PATCH] recalc_sigpending_tsk fixes

> We already discussed this, this is not so important, but how about
> 
> 	void recalc_sigpending_and_wake(struct task_struct *t)
> 	{
> 		int was_pending = signal_pending(t);
> 
> 		if (recalc_sigpending_tsk(t) && !was_pending)
> 			signal_wake_up(t, 0);
> 	}
> 
> ?
> 
> This "was_pending" is more a documenation than a optimization.

I don't object, but I think another comment about the wakeup being
sometimes superfluous is enough, if anything.  


Thanks,
Roland
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