git.ipfire.org Git - thirdparty/openwrt.git/blob

   1 From 53aa50017a2d7f730d4aae4bea41619d7a92bb03 Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Ma=C3=ADra=20Canal?= <mcanal@igalia.com>
   3 Date: Mon, 23 Sep 2024 10:55:14 -0300
   4 Subject: [PATCH] drm/v3d: Add modparam for turning off Big/Super Pages
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 Commit 0df4a13ca8bed29cbc362c99b958fbb8b27b1675 upstream
  10
  11 Add a modparam for turning off Big/Super Pages to make sure that if an
  12 user doesn't want Big/Super Pages enabled, it can disabled it by setting
  13 the modparam to false.
  14
  15 Signed-off-by: Maíra Canal <mcanal@igalia.com>
  16 Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
  17 Link: https://patchwork.freedesktop.org/patch/msgid/20240923141348.2422499-11-mcanal@igalia.com
  18 ---
  19  drivers/gpu/drm/v3d/v3d_drv.c   | 7 +++++++
  20  drivers/gpu/drm/v3d/v3d_drv.h   | 1 +
  21  drivers/gpu/drm/v3d/v3d_gemfs.c | 4 ++++
  22  3 files changed, 12 insertions(+)
  23
  24 --- a/drivers/gpu/drm/v3d/v3d_drv.c
  25 +++ b/drivers/gpu/drm/v3d/v3d_drv.c
  26 @@ -40,6 +40,13 @@
  27  #define DRIVER_MINOR 0
  28  #define DRIVER_PATCHLEVEL 0
  29
  30 +/* Only expose the `super_pages` modparam if THP is enabled. */
  31 +#ifdef CONFIG_TRANSPARENT_HUGEPAGE
  32 +bool super_pages = true;
  33 +module_param_named(super_pages, super_pages, bool, 0400);
  34 +MODULE_PARM_DESC(super_pages, "Enable/Disable Super Pages support.");
  35 +#endif
  36 +
  37  static int v3d_get_param_ioctl(struct drm_device *dev, void *data,
  38                                struct drm_file *file_priv)
  39  {
  40 --- a/drivers/gpu/drm/v3d/v3d_drv.h
  41 +++ b/drivers/gpu/drm/v3d/v3d_drv.h
  42 @@ -545,6 +545,7 @@ void v3d_invalidate_caches(struct v3d_de
  43  void v3d_clean_caches(struct v3d_dev *v3d);
  44
  45  /* v3d_gemfs.c */
  46 +extern bool super_pages;
  47  void v3d_gemfs_init(struct v3d_dev *v3d);
  48  void v3d_gemfs_fini(struct v3d_dev *v3d);
  49
  50 --- a/drivers/gpu/drm/v3d/v3d_gemfs.c
  51 +++ b/drivers/gpu/drm/v3d/v3d_gemfs.c
  52 @@ -20,6 +20,10 @@ void v3d_gemfs_init(struct v3d_dev *v3d)
  53         if (!IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE))
  54                 goto err;
  55
  56 +       /* The user doesn't want to enable Super Pages */
  57 +       if (!super_pages)
  58 +               goto err;
  59 +
  60         type = get_fs_type("tmpfs");
  61         if (!type)
  62                 goto err;