linux-kernel - Re: [RFC PATCH 8/8] Revert "percpu: free percpu allocation info for uniprocessor system"

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Message-ID: <1C04F98F-4DA4-4038-B1D1-930BBC592147@axis.com>
Date:	Sun, 21 Sep 2014 19:23:26 +0200
From:	Mikael Starvik <mikael.starvik@...s.com>
To:	Guenter Roeck <linux@...ck-us.net>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Waldemar Brodkorb <mail@...demar-brodkorb.de>,
	Jesper Nilsson <jespern@...s.com>,
	Mikael Starvik <starvik@...s.com>,
	linux-cris-kernel <linux-cris-kernel@...s.com>,
	Guenter Roeck <linux@...ck-us.net>
Subject: Re: [RFC PATCH 8/8] Revert "percpu: free percpu allocation info for
 uniprocessor system"

Thanks for all your work with CRIS! CRISv10 is alive but is currently used as small helper CPUs close to hardware blocks.

Jesper will review and ack.

> 21 sep 2014 kl. 18:27 skrev "Guenter Roeck" <linux@...ck-us.net>:
> 
> This reverts commit 3189eddbcafcc4d827f7f19facbeddec4424eba8.
> 
> The commit causes a hang with a crisv32 image. This may be an architecture
> problem, but at least for now the revert is necessary to be able to boot a
> crisv32 image.
> 
> Signed-off-by: Guenter Roeck <linux@...ck-us.net>
> ---
> mm/percpu.c | 2 --
> 1 file changed, 2 deletions(-)
> 
> diff --git a/mm/percpu.c b/mm/percpu.c
> index da997f9..2139e30 100644
> --- a/mm/percpu.c
> +++ b/mm/percpu.c
> @@ -1932,8 +1932,6 @@ void __init setup_per_cpu_areas(void)
> 
>    if (pcpu_setup_first_chunk(ai, fc) < 0)
>        panic("Failed to initialize percpu areas.");
> -
> -    pcpu_free_alloc_info(ai);
> }
> 
> #endif    /* CONFIG_SMP */
> -- 
> 1.9.1
> 
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