linux-kernel - Re: [PATCH] drm/i915: Make kobj

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Message-ID: <87sff5293w.fsf@intel.com>
Date:   Thu, 16 Feb 2023 12:33:07 +0200
From:   Jani Nikula <jani.nikula@...ux.intel.com>
To:     Thomas Weißschuh <linux@...ssschuh.net>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org,
        Thomas Weißschuh <linux@...ssschuh.net>
Subject: Re: [PATCH] drm/i915: Make kobj_type structures constant

On Thu, 16 Feb 2023, Thomas Weißschuh <linux@...ssschuh.net> wrote:
> 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: Jani Nikula <jani.nikula@...el.com>

> ---
>  drivers/gpu/drm/i915/gt/intel_gt_sysfs.c | 2 +-
>  drivers/gpu/drm/i915/gt/sysfs_engines.c  | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_gt_sysfs.c b/drivers/gpu/drm/i915/gt/intel_gt_sysfs.c
> index 9486dd3bed99..df15b17caf89 100644
> --- a/drivers/gpu/drm/i915/gt/intel_gt_sysfs.c
> +++ b/drivers/gpu/drm/i915/gt/intel_gt_sysfs.c
> @@ -71,7 +71,7 @@ static void kobj_gt_release(struct kobject *kobj)
>  {
>  }
>  
> -static struct kobj_type kobj_gt_type = {
> +static const struct kobj_type kobj_gt_type = {
>  	.release = kobj_gt_release,
>  	.sysfs_ops = &kobj_sysfs_ops,
>  	.default_groups = id_groups,
> diff --git a/drivers/gpu/drm/i915/gt/sysfs_engines.c b/drivers/gpu/drm/i915/gt/sysfs_engines.c
> index f2d9858d827c..b5e0fe5dbf6c 100644
> --- a/drivers/gpu/drm/i915/gt/sysfs_engines.c
> +++ b/drivers/gpu/drm/i915/gt/sysfs_engines.c
> @@ -421,7 +421,7 @@ static void kobj_engine_release(struct kobject *kobj)
>  	kfree(kobj);
>  }
>  
> -static struct kobj_type kobj_engine_type = {
> +static const struct kobj_type kobj_engine_type = {
>  	.release = kobj_engine_release,
>  	.sysfs_ops = &kobj_sysfs_ops
>  };
>
> ---
> base-commit: 033c40a89f55525139fd5b6342281b09b97d05bf
> change-id: 20230216-kobj_type-i915-886bebc36129
>
> Best regards,

-- 
Jani Nikula, Intel Open Source Graphics Center