linux-kernel - Re: [PATCH 1/2] powerpc/xive: Use GFP_KERNEL instead of GFP_ATOMIC in 'xive_irq_bitmap

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Message-ID: <20190801112348.2d1760f3@bahia.lan>
Date:   Thu, 1 Aug 2019 11:23:48 +0200
From:   Greg Kurz <groug@...d.org>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     benh@...nel.crashing.org, paulus@...ba.org, mpe@...erman.id.au,
        allison@...utok.net, tglx@...utronix.de, clg@...d.org,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 1/2] powerpc/xive: Use GFP_KERNEL instead of GFP_ATOMIC
 in 'xive_irq_bitmap_add()'

On Thu,  1 Aug 2019 10:32:31 +0200
Christophe JAILLET <christophe.jaillet@...adoo.fr> wrote:

> There is no need to use GFP_ATOMIC here. GFP_KERNEL should be enough.
> GFP_KERNEL is also already used for another allocation just a few lines
> below.
> 
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> ---

Good catch.

Reviewed-by: Greg Kurz <groug@...d.org>

>  arch/powerpc/sysdev/xive/spapr.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/powerpc/sysdev/xive/spapr.c b/arch/powerpc/sysdev/xive/spapr.c
> index 8ef9cf4ebb1c..b4f5eb9e0f82 100644
> --- a/arch/powerpc/sysdev/xive/spapr.c
> +++ b/arch/powerpc/sysdev/xive/spapr.c
> @@ -45,7 +45,7 @@ static int xive_irq_bitmap_add(int base, int count)
>  {
>  	struct xive_irq_bitmap *xibm;
>  
> -	xibm = kzalloc(sizeof(*xibm), GFP_ATOMIC);
> +	xibm = kzalloc(sizeof(*xibm), GFP_KERNEL);
>  	if (!xibm)
>  		return -ENOMEM;
>