linux-kernel - Re: [PATCH] drm/amdgpu: make kobj

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Message-ID: <ba5c8e8d-2418-aca0-59b0-721d08af452c@amd.com>
Date:   Thu, 16 Feb 2023 07:58:48 +0100
From:   Christian König <christian.koenig@....com>
To:     Thomas Weißschuh <linux@...ssschuh.net>,
        Alex Deucher <alexander.deucher@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/amdgpu: make kobj_type structures constant

Am 16.02.23 um 02:07 schrieb Thomas Weißschuh:
> Since commit ee6d3dd4ed48 ("driver core: make kobj_type constant.")
> the driver core allows the usage of const struct kobj_type.
>
> Take advantage of this to constify the structure definitions to prevent
> modification at runtime.
>
> Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>

Reviewed-by: Christian König <christian.koenig@....com>

> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c | 10 +++++-----
>   drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c      |  2 +-
>   2 files changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
> index 1bbd56029a4f..8e04952e5144 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
> @@ -704,7 +704,7 @@ static void ip_hw_instance_release(struct kobject *kobj)
>   	kfree(ip_hw_instance);
>   }
>   
> -static struct kobj_type ip_hw_instance_ktype = {
> +static const struct kobj_type ip_hw_instance_ktype = {
>   	.release = ip_hw_instance_release,
>   	.sysfs_ops = &ip_hw_instance_sysfs_ops,
>   	.default_groups = ip_hw_instance_groups,
> @@ -723,7 +723,7 @@ static void ip_hw_id_release(struct kobject *kobj)
>   	kfree(ip_hw_id);
>   }
>   
> -static struct kobj_type ip_hw_id_ktype = {
> +static const struct kobj_type ip_hw_id_ktype = {
>   	.release = ip_hw_id_release,
>   	.sysfs_ops = &kobj_sysfs_ops,
>   };
> @@ -786,18 +786,18 @@ static const struct sysfs_ops ip_die_entry_sysfs_ops = {
>   	.show = ip_die_entry_attr_show,
>   };
>   
> -static struct kobj_type ip_die_entry_ktype = {
> +static const struct kobj_type ip_die_entry_ktype = {
>   	.release = ip_die_entry_release,
>   	.sysfs_ops = &ip_die_entry_sysfs_ops,
>   	.default_groups = ip_die_entry_groups,
>   };
>   
> -static struct kobj_type die_kobj_ktype = {
> +static const struct kobj_type die_kobj_ktype = {
>   	.release = die_kobj_release,
>   	.sysfs_ops = &kobj_sysfs_ops,
>   };
>   
> -static struct kobj_type ip_discovery_ktype = {
> +static const struct kobj_type ip_discovery_ktype = {
>   	.release = ip_disc_release,
>   	.sysfs_ops = &kobj_sysfs_ops,
>   };
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
> index 4b9e7b050ccd..6d13ce6ec9cc 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
> @@ -228,7 +228,7 @@ static const struct sysfs_ops amdgpu_xgmi_hive_ops = {
>   	.show = amdgpu_xgmi_show_attrs,
>   };
>   
> -struct kobj_type amdgpu_xgmi_hive_type = {
> +static const struct kobj_type amdgpu_xgmi_hive_type = {
>   	.release = amdgpu_xgmi_hive_release,
>   	.sysfs_ops = &amdgpu_xgmi_hive_ops,
>   	.default_groups = amdgpu_xgmi_hive_groups,
>
> ---
> base-commit: 033c40a89f55525139fd5b6342281b09b97d05bf
> change-id: 20230216-kobj_type-amdgpu-4d3f0e1e05d4
>
> Best regards,