On Sun, Jan 22, 2017 at 07:11:10PM +0100, Noralf Trønnes wrote:
> Instead of having the drivers call drm_debugfs_remove_files() in
> their drm_driver->debugfs_cleanup hook, do it automatically by
> traversing minor->debugfs_list.
> Also use debugfs_remove_recursive() so drivers who add their own
> debugfs files don't have to keep track of them for removal.
>
> Signed-off-by: Noralf Trønnes <noralf@xxxxxxxxxxx>
Makes sense, but that leaves us with a pile of dead code in drivers? Can
you pls go through them and remove this all (including the debugfs_cleanup
hook), and then removing the remaining (now dead) code in the core?
Thanks, Daniel
> ---
> drivers/gpu/drm/drm_debugfs.c | 17 +++++++++++++++--
> 1 file changed, 15 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
> index 37fd612..0510ce2 100644
> --- a/drivers/gpu/drm/drm_debugfs.c
> +++ b/drivers/gpu/drm/drm_debugfs.c
> @@ -218,6 +218,19 @@ int drm_debugfs_remove_files(const struct drm_info_list *files, int count,
> }
> EXPORT_SYMBOL(drm_debugfs_remove_files);
>
> +static void drm_debugfs_remove_all_files(struct drm_minor *minor)
> +{
> + struct drm_info_node *node, *tmp;
> +
> + mutex_lock(&minor->debugfs_lock);
> + list_for_each_entry_safe(node, tmp, &minor->debugfs_list, list) {
> + debugfs_remove(node->dent);
> + list_del(&node->list);
> + kfree(node);
> + }
> + mutex_unlock(&minor->debugfs_lock);
> +}
> +
> /**
> * Cleanup the debugfs filesystem resources.
> *
> @@ -245,9 +258,9 @@ int drm_debugfs_cleanup(struct drm_minor *minor)
> }
> }
>
> - drm_debugfs_remove_files(drm_debugfs_list, DRM_DEBUGFS_ENTRIES, minor);
> + drm_debugfs_remove_all_files(minor);
>
> - debugfs_remove(minor->debugfs_root);
> + debugfs_remove_recursive(minor->debugfs_root);
> minor->debugfs_root = NULL;
>
> return 0;
> --
> 2.10.2
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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