From 1b7ab1a1c3807523417fe4c20876546caf936242 Mon Sep 17 00:00:00 2001 From: Karol Herbst Date: Wed, 29 Jul 2015 13:44:21 +0200 Subject: [PATCH] drm/nouveau/debugfs: add infrastructure to add files with other fops than only read v2: use the same object for private data as with the drm debugfs functions Signed-off-by: Karol Herbst Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nouveau_debugfs.c | 56 +++++++++++++++++++++++++++++-- 1 file changed, 53 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_debugfs.c b/drivers/gpu/drm/nouveau/nouveau_debugfs.c index 5392e07..598c722 100644 --- a/drivers/gpu/drm/nouveau/nouveau_debugfs.c +++ b/drivers/gpu/drm/nouveau/nouveau_debugfs.c @@ -28,6 +28,7 @@ * Ben Skeggs */ +#include #include "nouveau_debugfs.h" #include "nouveau_drm.h" @@ -48,17 +49,66 @@ static struct drm_info_list nouveau_debugfs_list[] = { }; #define NOUVEAU_DEBUGFS_ENTRIES ARRAY_SIZE(nouveau_debugfs_list) +static const struct nouveau_debugfs_files { + const char *name; + const struct file_operations *fops; +} nouveau_debugfs_files[] = {}; + + +static int +nouveau_debugfs_create_file(struct drm_minor *minor, + const struct nouveau_debugfs_files *ndf) +{ + struct drm_info_node *node; + + node = kmalloc(sizeof(*node), GFP_KERNEL); + if (node == NULL) + return -ENOMEM; + + node->minor = minor; + node->info_ent = (const void *)ndf->fops; + node->dent = debugfs_create_file(ndf->name, S_IRUGO | S_IWUSR, + minor->debugfs_root, node, ndf->fops); + if (!node->dent) { + kfree(node); + return -ENOMEM; + } + + mutex_lock(&minor->debugfs_lock); + list_add(&node->list, &minor->debugfs_list); + mutex_unlock(&minor->debugfs_lock); + return 0; +} + int nouveau_debugfs_init(struct drm_minor *minor) { - drm_debugfs_create_files(nouveau_debugfs_list, NOUVEAU_DEBUGFS_ENTRIES, - minor->debugfs_root, minor); - return 0; + int i, ret; + + for (i = 0; i < ARRAY_SIZE(nouveau_debugfs_files); i++) { + ret = nouveau_debugfs_create_file(minor, + &nouveau_debugfs_files[i]); + + if (ret) + return ret; + } + + return drm_debugfs_create_files(nouveau_debugfs_list, + NOUVEAU_DEBUGFS_ENTRIES, + minor->debugfs_root, minor); } void nouveau_debugfs_takedown(struct drm_minor *minor) { + int i; + drm_debugfs_remove_files(nouveau_debugfs_list, NOUVEAU_DEBUGFS_ENTRIES, minor); + + for (i = 0; i < ARRAY_SIZE(nouveau_debugfs_files); i++) { + drm_debugfs_remove_files((struct drm_info_list *) + nouveau_debugfs_files[i].fops, + 1, minor); + } } -- 2.7.4