From: Andrew Morton <akpm@osdl.org>
To: Anton Blanchard <anton@samba.org>
Cc: torvalds@osdl.org, pj@sgi.com, ak@muc.de, linux-arch@vger.kernel.org
Subject: Re: [PATCH] [ppc64] Fix compat cpu affinity on big endian 64bit
Date: Tue, 7 Sep 2004 22:22:50 -0700 [thread overview]
Message-ID: <20040907222250.62bc6ff9.akpm@osdl.org> (raw)
In-Reply-To: <20040908004040.GD25278@krispykreme>
Anton Blanchard <anton@samba.org> wrote:
>
> Add compat sched affinity code. We can argue about how
> USE_COMPAT_ULONG_CPUMASK works now that the non compat interface has changed.
>
> The old non compat behaviour was to require a bitmap long enough in both
> setaffinity and getaffinity, now its only required in getaffinity. I
> could do the same for the 32bit interfaces.
>
> Signed-off-by: Anton Blanchard <anton@samba.org>
>
> diff -puN kernel/compat.c~compat_sys_sched_affinity kernel/compat.c
> --- gr_work/kernel/compat.c~compat_sys_sched_affinity 2004-09-06 04:19:06.327399153 -0500
> +++ gr_work-anton/kernel/compat.c 2004-09-07 19:36:09.127584076 -0500
> @@ -412,16 +412,43 @@ compat_sys_wait4(compat_pid_t pid, compa
> }
> }
>
> +/*
> + * for maximum compatability, we allow programs to use a single (compat)
> + * unsigned long bitmask if all cpus will fit. If not, you have to have
> + * at least the kernel size available.
> + */
> +#define USE_COMPAT_ULONG_CPUMASK (NR_CPUS <= BITS_PER_COMPAT_LONG)
umm, wanna send along a patch which defines BITS_PER_COMPAT_LONG?
next prev parent reply other threads:[~2004-09-08 5:24 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-31 14:30 [PATCH] Fix argument checking in sched_setaffinity Andi Kleen
2004-09-01 1:36 ` Paul Jackson
2004-09-01 1:59 ` Anton Blanchard
2004-09-02 9:33 ` Paul Jackson
2004-09-04 13:40 ` Andi Kleen
2004-09-05 14:27 ` Anton Blanchard
2004-09-04 13:37 ` Andi Kleen
[not found] ` <20040904171417.67649169.pj@sgi.com>
2004-09-05 0:18 ` Linus Torvalds
2004-09-05 1:05 ` Paul Jackson
2004-09-05 1:38 ` Linus Torvalds
2004-09-05 3:48 ` Paul Jackson
2004-09-05 3:57 ` Linus Torvalds
2004-09-05 4:17 ` Paul Jackson
2004-09-05 4:52 ` Paul Jackson
2004-09-06 18:23 ` Andi Kleen
2004-09-06 18:48 ` Linus Torvalds
2004-09-06 21:11 ` Paul Jackson
2004-09-07 14:40 ` Linus Torvalds
2004-09-07 14:48 ` Geert Uytterhoeven
2004-09-07 14:49 ` Andi Kleen
2004-09-07 21:44 ` Ralf Baechle
2004-09-07 22:55 ` Paul Jackson
2004-09-08 6:58 ` Andi Kleen
2004-09-08 7:26 ` Paul Jackson
2004-09-08 0:26 ` Anton Blanchard
2004-09-07 14:50 ` Matthew Wilcox
2004-09-08 0:24 ` Anton Blanchard
2004-09-08 0:33 ` [PATCH] [ppc64] compat_get_bitmap/compat_put_bitmap Anton Blanchard
2004-09-08 0:40 ` [PATCH] [ppc64] Fix compat cpu affinity on big endian 64bit Anton Blanchard
2004-09-08 0:43 ` [PATCH] [ppc64] Fix compat NUMA API " Anton Blanchard
2004-09-08 5:22 ` Andrew Morton [this message]
2004-09-08 5:34 ` [PATCH] [ppc64] Fix compat cpu affinity " Anton Blanchard
2004-09-08 5:43 ` Andrew Morton
2004-09-07 8:07 ` [PATCH] Fix argument checking in sched_setaffinity Andi Kleen
2004-09-06 13:16 ` Andi Kleen
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