On Wed, 11 Jan 2023, Maíra Canal <[email protected]> wrote: > Create a helper to encapsulate the code that adds a new debugfs file to > a linked list related to a object. Moreover, the helper also provides > more flexibily on the type of the object, allowing to use the helper for > other types of drm_debugfs_entry. > > Signed-off-by: Maíra Canal <[email protected]> > --- > drivers/gpu/drm/drm_debugfs.c | 20 ++++++++++++-------- > 1 file changed, 12 insertions(+), 8 deletions(-) > > diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c > index 4f643a490dc3..255d2068ac16 100644 > --- a/drivers/gpu/drm/drm_debugfs.c > +++ b/drivers/gpu/drm/drm_debugfs.c > @@ -316,6 +316,17 @@ void drm_debugfs_cleanup(struct drm_minor *minor) > minor->debugfs_root = NULL; > } > > +#define drm_debugfs_add_file_to_list(component) do { \ > + entry->file.name = name; \ > + entry->file.show = show; \ > + entry->file.data = data; \ > + entry->component = (component); \ > + \ > + mutex_lock(&(component)->debugfs_mutex); \ > + list_add(&entry->list, &(component)->debugfs_list); \ > + mutex_unlock(&(component)->debugfs_mutex); \ > + } while (0)
In general, please don't add macros that implicitly depend on certain local variable names. In this case, "entry". But I'm also not convinced about the usefulness of adding this kind of "generics". Sure, it'll save you a few lines here and there, but I think overall it's just confusing more than it's useful. BR, Jani. > + > /** > * drm_debugfs_add_file - Add a given file to the DRM device debugfs file > list > * @dev: drm device for the ioctl > @@ -334,14 +345,7 @@ void drm_debugfs_add_file(struct drm_device *dev, const > char *name, > if (!entry) > return; > > - entry->file.name = name; > - entry->file.show = show; > - entry->file.data = data; > - entry->dev = dev; > - > - mutex_lock(&dev->debugfs_mutex); > - list_add(&entry->list, &dev->debugfs_list); > - mutex_unlock(&dev->debugfs_mutex); > + drm_debugfs_add_file_to_list(dev); > } > EXPORT_SYMBOL(drm_debugfs_add_file); -- Jani Nikula, Intel Open Source Graphics Center
