linux-kernel - Re: RT scheduling and a way to make a process hang, unkillable

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Message-ID: <874oyj4yiz.fsf@basil.nowhere.org>
Date:	Tue, 24 Feb 2009 16:58:44 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Dhaval Giani <dhaval@...ux.vnet.ibm.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Corey Hickey <bugfood-ml@...ooh.org>,
	linux-kernel@...r.kernel.org,
	Bharata B Rao <bharata@...ux.vnet.ibm.com>,
	Balbir Singh <balbir@...ibm.com>,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...e.hu>, mtk.manpages@...il.com,
	Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: RT scheduling and a way to make a process hang, unkillable

Dhaval Giani <dhaval@...ux.vnet.ibm.com> writes:
>  		new->euid = euid;
> Index: linux-2.6/include/asm-generic/errno.h
> ===================================================================
> --- linux-2.6.orig/include/asm-generic/errno.h
> +++ linux-2.6/include/asm-generic/errno.h
> @@ -106,4 +106,6 @@
>  #define	EOWNERDEAD	130	/* Owner died */
>  #define	ENOTRECOVERABLE	131	/* State not recoverable */
>  
> +#define ENOTIME		132	/* No time available to run process */

It's normally not a good idea to add new errnos, because old glibc's
strerror()s won't know about it.

There are also so many around that you surely will find an existing
one which sounds appropiate.
-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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