linux-kernel - Re: [PATCH] amdkfd: actually allocate longs for the pasid bitmask

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Date:	Mon, 29 Dec 2014 10:51:28 +0200
From:	Oded Gabbay <oded.gabbay@....com>
To:	Sasha Levin <sasha.levin@...cle.com>
CC:	<airlied@...ux.ie>, <alexander.deucher@....com>,
	<j.glisse@...il.com>, <linux-kernel@...r.kernel.org>,
	<dri-devel@...ts.freedesktop.org>, <John.Bridgman@....com>,
	<Andrew.Lewycky@....com>, <joro@...tes.org>
Subject: Re: [PATCH] amdkfd: actually allocate longs for the pasid bitmask



On 12/28/2014 06:44 PM, Sasha Levin wrote:
> Commit "amdkfd: use sizeof(long) granularity for the pasid bitmask" calculated
> the number of longs it will need, but ended up allocating that number of
> bytes rather than longs.
>
> Fix that silly error and allocate the amount of data really required.
>
> Signed-off-by: Sasha Levin <sasha.levin@...cle.com>
> ---
>   drivers/gpu/drm/amd/amdkfd/kfd_pasid.c |    2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_pasid.c b/drivers/gpu/drm/amd/amdkfd/kfd_pasid.c
> index 71699ad..4c25ef5 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_pasid.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_pasid.c
> @@ -32,7 +32,7 @@ int kfd_pasid_init(void)
>   {
>   	pasid_limit = max_num_of_processes;
>
> -	pasid_bitmap = kzalloc(BITS_TO_LONGS(pasid_limit), GFP_KERNEL);
> +	pasid_bitmap = kcalloc(BITS_TO_LONGS(pasid_limit), sizeof(long), GFP_KERNEL);
>   	if (!pasid_bitmap)
>   		return -ENOMEM;
>
>
Thanks!
Applied to my amdkfd-fixes tree.

	Oded
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