linux-kernel - Re: [patch 0/3] add rt_tgsigqueueinfo syscall -V2

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Message-ID: <20090331152610.GC4792@redhat.com>
Date:	Tue, 31 Mar 2009 17:26:10 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Roland McGrath <roland@...hat.com>,
	Michael Kerrisk <mtk.manpages@...glemail.com>,
	Ulrich Drepper <drepper@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [patch 0/3] add rt_tgsigqueueinfo syscall -V2

On 03/24, Thomas Gleixner wrote:
>
> sys_kill has a counterpart sys_tgkill which allows to send signals to
> a particular thread. sys_rt_sigqueueinfo is lacking such a counterpart.
>
> Aside of the asymetry it is a show stopper for migrating applications
> from other unix-alike RTOSes.
>
> The following patch series implements rt_tgsigqueueinfo and hooks it
> up for x86.
>
> Changes since V1:
>     - match rt_siqqueueinfo and rt_tgsigqueueinfo handling of
>       info.si_pid/si_uid

I think this all is correct. And I think "Changes since V1" are good,
rt_tgsigqueueinfo() should not play with si_pid/si_uid.

Reviewed-by: Oleg Nesterov <oleg@...hat.com>

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