2021-09-17 06:53:00

by Fernando Ramos

Subject: [PATCH 04/15] drm: cleanup: drm_modeset_lock_all() --> DRM_MODESET_LOCK_ALL_BEGIN()

As requested in Documentation/gpu/todo.rst, replace driver calls to
drm_modeset_lock_all() with DRM_MODESET_LOCK_ALL_BEGIN() and
DRM_MODESET_LOCK_ALL_END()

Signed-off-by: Fernando Ramos <[email protected]>
---
drivers/gpu/drm/drm_client_modeset.c | 5 +++--
drivers/gpu/drm/drm_crtc_helper.c | 18 ++++++++++++------
drivers/gpu/drm/drm_fb_helper.c | 10 ++++++----
drivers/gpu/drm/drm_framebuffer.c | 6 ++++--
4 files changed, 25 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/drm_client_modeset.c b/drivers/gpu/drm/drm_client_modeset.c
index 5f5184f071ed..43f772543d2a 100644
--- a/drivers/gpu/drm/drm_client_modeset.c
+++ b/drivers/gpu/drm/drm_client_modeset.c
@@ -1062,9 +1062,10 @@ static int drm_client_modeset_commit_legacy(struct drm_client_dev *client)
struct drm_device *dev = client->dev;
struct drm_mode_set *mode_set;
struct drm_plane *plane;
+ struct drm_modeset_acquire_ctx ctx;
int ret = 0;

- drm_modeset_lock_all(dev);
+ DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
drm_for_each_plane(plane, dev) {
if (plane->type != DRM_PLANE_TYPE_PRIMARY)
drm_plane_force_disable(plane);
@@ -1093,7 +1094,7 @@ static int drm_client_modeset_commit_legacy(struct drm_client_dev *client)
goto out;
}
out:
- drm_modeset_unlock_all(dev);
+ DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);

return ret;
}
diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c
index bff917531f33..f3ce073dff79 100644
--- a/drivers/gpu/drm/drm_crtc_helper.c
+++ b/drivers/gpu/drm/drm_crtc_helper.c
@@ -218,11 +218,14 @@ static void __drm_helper_disable_unused_functions(struct drm_device *dev)
*/
void drm_helper_disable_unused_functions(struct drm_device *dev)
{
+ struct drm_modeset_acquire_ctx ctx;
+ int ret;
+
WARN_ON(drm_drv_uses_atomic_modeset(dev));

- drm_modeset_lock_all(dev);
+ DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
__drm_helper_disable_unused_functions(dev);
- drm_modeset_unlock_all(dev);
+ DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
}
EXPORT_SYMBOL(drm_helper_disable_unused_functions);

@@ -942,12 +945,14 @@ void drm_helper_resume_force_mode(struct drm_device *dev)
struct drm_crtc *crtc;
struct drm_encoder *encoder;
const struct drm_crtc_helper_funcs *crtc_funcs;
+ struct drm_modeset_acquire_ctx ctx;
int encoder_dpms;
bool ret;
+ int err;

WARN_ON(drm_drv_uses_atomic_modeset(dev));

- drm_modeset_lock_all(dev);
+ DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, err);
drm_for_each_crtc(crtc, dev) {

if (!crtc->enabled)
@@ -982,7 +987,7 @@ void drm_helper_resume_force_mode(struct drm_device *dev)

/* disable the unused connectors while restoring the modesetting */
__drm_helper_disable_unused_functions(dev);
- drm_modeset_unlock_all(dev);
+ DRM_MODESET_LOCK_ALL_END(dev, ctx, err);
}
EXPORT_SYMBOL(drm_helper_resume_force_mode);

@@ -1002,9 +1007,10 @@ EXPORT_SYMBOL(drm_helper_resume_force_mode);
int drm_helper_force_disable_all(struct drm_device *dev)
{
struct drm_crtc *crtc;
+ struct drm_modeset_acquire_ctx ctx;
int ret = 0;

- drm_modeset_lock_all(dev);
+ DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
drm_for_each_crtc(crtc, dev)
if (crtc->enabled) {
struct drm_mode_set set = {
@@ -1016,7 +1022,7 @@ int drm_helper_force_disable_all(struct drm_device *dev)
goto out;
}
out:
- drm_modeset_unlock_all(dev);
+ DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
return ret;
}
EXPORT_SYMBOL(drm_helper_force_disable_all);
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 3ab078321045..6860223f0068 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -940,10 +940,11 @@ static int setcmap_legacy(struct fb_cmap *cmap, struct fb_info *info)
struct drm_fb_helper *fb_helper = info->par;
struct drm_mode_set *modeset;
struct drm_crtc *crtc;
+ struct drm_modeset_acquire_ctx ctx;
u16 *r, *g, *b;
int ret = 0;

- drm_modeset_lock_all(fb_helper->dev);
+ DRM_MODESET_LOCK_ALL_BEGIN(fb_helper->dev, ctx, 0, ret);
drm_client_for_each_modeset(modeset, &fb_helper->client) {
crtc = modeset->crtc;
if (!crtc->funcs->gamma_set || !crtc->gamma_size) {
@@ -970,7 +971,7 @@ static int setcmap_legacy(struct fb_cmap *cmap, struct fb_info *info)
goto out;
}
out:
- drm_modeset_unlock_all(fb_helper->dev);
+ DRM_MODESET_LOCK_ALL_END(fb_helper->dev, ctx, ret);

return ret;
}
@@ -1441,10 +1442,11 @@ static int pan_display_legacy(struct fb_var_screeninfo *var,
struct drm_fb_helper *fb_helper = info->par;
struct drm_client_dev *client = &fb_helper->client;
struct drm_mode_set *modeset;
+ struct drm_modeset_acquire_ctx ctx;
int ret = 0;

mutex_lock(&client->modeset_mutex);
- drm_modeset_lock_all(fb_helper->dev);
+ DRM_MODESET_LOCK_ALL_BEGIN(fb_helper->dev, ctx, 0, ret);
drm_client_for_each_modeset(modeset, client) {
modeset->x = var->xoffset;
modeset->y = var->yoffset;
@@ -1457,7 +1459,7 @@ static int pan_display_legacy(struct fb_var_screeninfo *var,
}
}
}
- drm_modeset_unlock_all(fb_helper->dev);
+ DRM_MODESET_LOCK_ALL_END(fb_helper->dev, ctx, ret);
mutex_unlock(&client->modeset_mutex);

return ret;
diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c
index 07f5abc875e9..205e9aa9a409 100644
--- a/drivers/gpu/drm/drm_framebuffer.c
+++ b/drivers/gpu/drm/drm_framebuffer.c
@@ -1059,8 +1059,10 @@ static void legacy_remove_fb(struct drm_framebuffer *fb)
struct drm_device *dev = fb->dev;
struct drm_crtc *crtc;
struct drm_plane *plane;
+ struct drm_modeset_acquire_ctx ctx;
+ int ret;

- drm_modeset_lock_all(dev);
+ DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
/* remove from any CRTC */
drm_for_each_crtc(crtc, dev) {
if (crtc->primary->fb == fb) {
@@ -1082,7 +1084,7 @@ static void legacy_remove_fb(struct drm_framebuffer *fb)
drm_plane_force_disable(plane);
}
}
- drm_modeset_unlock_all(dev);
+ DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
}

/**
--
2.33.0

2021-09-17 23:37:13

by Sean Paul

Subject: Re: [PATCH 04/15] drm: cleanup: drm_modeset_lock_all() --> DRM_MODESET_LOCK_ALL_BEGIN()

On Thu, Sep 16, 2021 at 11:15:41PM +0200, Fernando Ramos wrote:
> As requested in Documentation/gpu/todo.rst, replace driver calls to
> drm_modeset_lock_all() with DRM_MODESET_LOCK_ALL_BEGIN() and
> DRM_MODESET_LOCK_ALL_END()
>
> Signed-off-by: Fernando Ramos <[email protected]>

Reviewed-by: Sean Paul <[email protected]>

> ---
> drivers/gpu/drm/drm_client_modeset.c | 5 +++--
> drivers/gpu/drm/drm_crtc_helper.c | 18 ++++++++++++------
> drivers/gpu/drm/drm_fb_helper.c | 10 ++++++----
> drivers/gpu/drm/drm_framebuffer.c | 6 ++++--
> 4 files changed, 25 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_client_modeset.c b/drivers/gpu/drm/drm_client_modeset.c
> index 5f5184f071ed..43f772543d2a 100644
> --- a/drivers/gpu/drm/drm_client_modeset.c
> +++ b/drivers/gpu/drm/drm_client_modeset.c
> @@ -1062,9 +1062,10 @@ static int drm_client_modeset_commit_legacy(struct drm_client_dev *client)
> struct drm_device *dev = client->dev;
> struct drm_mode_set *mode_set;
> struct drm_plane *plane;
> + struct drm_modeset_acquire_ctx ctx;
> int ret = 0;
>
> - drm_modeset_lock_all(dev);
> + DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
> drm_for_each_plane(plane, dev) {
> if (plane->type != DRM_PLANE_TYPE_PRIMARY)
> drm_plane_force_disable(plane);
> @@ -1093,7 +1094,7 @@ static int drm_client_modeset_commit_legacy(struct drm_client_dev *client)
> goto out;
> }
> out:
> - drm_modeset_unlock_all(dev);
> + DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
>
> return ret;
> }
> diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c
> index bff917531f33..f3ce073dff79 100644
> --- a/drivers/gpu/drm/drm_crtc_helper.c
> +++ b/drivers/gpu/drm/drm_crtc_helper.c
> @@ -218,11 +218,14 @@ static void __drm_helper_disable_unused_functions(struct drm_device *dev)
> */
> void drm_helper_disable_unused_functions(struct drm_device *dev)
> {
> + struct drm_modeset_acquire_ctx ctx;
> + int ret;
> +
> WARN_ON(drm_drv_uses_atomic_modeset(dev));
>
> - drm_modeset_lock_all(dev);
> + DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
> __drm_helper_disable_unused_functions(dev);
> - drm_modeset_unlock_all(dev);
> + DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
> }
> EXPORT_SYMBOL(drm_helper_disable_unused_functions);
>
> @@ -942,12 +945,14 @@ void drm_helper_resume_force_mode(struct drm_device *dev)
> struct drm_crtc *crtc;
> struct drm_encoder *encoder;
> const struct drm_crtc_helper_funcs *crtc_funcs;
> + struct drm_modeset_acquire_ctx ctx;
> int encoder_dpms;
> bool ret;
> + int err;
>
> WARN_ON(drm_drv_uses_atomic_modeset(dev));
>
> - drm_modeset_lock_all(dev);
> + DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, err);
> drm_for_each_crtc(crtc, dev) {
>
> if (!crtc->enabled)
> @@ -982,7 +987,7 @@ void drm_helper_resume_force_mode(struct drm_device *dev)
>
> /* disable the unused connectors while restoring the modesetting */
> __drm_helper_disable_unused_functions(dev);
> - drm_modeset_unlock_all(dev);
> + DRM_MODESET_LOCK_ALL_END(dev, ctx, err);
> }
> EXPORT_SYMBOL(drm_helper_resume_force_mode);
>
> @@ -1002,9 +1007,10 @@ EXPORT_SYMBOL(drm_helper_resume_force_mode);
> int drm_helper_force_disable_all(struct drm_device *dev)
> {
> struct drm_crtc *crtc;
> + struct drm_modeset_acquire_ctx ctx;
> int ret = 0;
>
> - drm_modeset_lock_all(dev);
> + DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
> drm_for_each_crtc(crtc, dev)
> if (crtc->enabled) {
> struct drm_mode_set set = {
> @@ -1016,7 +1022,7 @@ int drm_helper_force_disable_all(struct drm_device *dev)
> goto out;
> }
> out:
> - drm_modeset_unlock_all(dev);
> + DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
> return ret;
> }
> EXPORT_SYMBOL(drm_helper_force_disable_all);
> diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
> index 3ab078321045..6860223f0068 100644
> --- a/drivers/gpu/drm/drm_fb_helper.c
> +++ b/drivers/gpu/drm/drm_fb_helper.c
> @@ -940,10 +940,11 @@ static int setcmap_legacy(struct fb_cmap *cmap, struct fb_info *info)
> struct drm_fb_helper *fb_helper = info->par;
> struct drm_mode_set *modeset;
> struct drm_crtc *crtc;
> + struct drm_modeset_acquire_ctx ctx;
> u16 *r, *g, *b;
> int ret = 0;
>
> - drm_modeset_lock_all(fb_helper->dev);
> + DRM_MODESET_LOCK_ALL_BEGIN(fb_helper->dev, ctx, 0, ret);
> drm_client_for_each_modeset(modeset, &fb_helper->client) {
> crtc = modeset->crtc;
> if (!crtc->funcs->gamma_set || !crtc->gamma_size) {
> @@ -970,7 +971,7 @@ static int setcmap_legacy(struct fb_cmap *cmap, struct fb_info *info)
> goto out;
> }
> out:
> - drm_modeset_unlock_all(fb_helper->dev);
> + DRM_MODESET_LOCK_ALL_END(fb_helper->dev, ctx, ret);
>
> return ret;
> }
> @@ -1441,10 +1442,11 @@ static int pan_display_legacy(struct fb_var_screeninfo *var,
> struct drm_fb_helper *fb_helper = info->par;
> struct drm_client_dev *client = &fb_helper->client;
> struct drm_mode_set *modeset;
> + struct drm_modeset_acquire_ctx ctx;
> int ret = 0;
>
> mutex_lock(&client->modeset_mutex);
> - drm_modeset_lock_all(fb_helper->dev);
> + DRM_MODESET_LOCK_ALL_BEGIN(fb_helper->dev, ctx, 0, ret);
> drm_client_for_each_modeset(modeset, client) {
> modeset->x = var->xoffset;
> modeset->y = var->yoffset;
> @@ -1457,7 +1459,7 @@ static int pan_display_legacy(struct fb_var_screeninfo *var,
> }
> }
> }
> - drm_modeset_unlock_all(fb_helper->dev);
> + DRM_MODESET_LOCK_ALL_END(fb_helper->dev, ctx, ret);
> mutex_unlock(&client->modeset_mutex);
>
> return ret;
> diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c
> index 07f5abc875e9..205e9aa9a409 100644
> --- a/drivers/gpu/drm/drm_framebuffer.c
> +++ b/drivers/gpu/drm/drm_framebuffer.c
> @@ -1059,8 +1059,10 @@ static void legacy_remove_fb(struct drm_framebuffer *fb)
> struct drm_device *dev = fb->dev;
> struct drm_crtc *crtc;
> struct drm_plane *plane;
> + struct drm_modeset_acquire_ctx ctx;
> + int ret;
>
> - drm_modeset_lock_all(dev);
> + DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
> /* remove from any CRTC */
> drm_for_each_crtc(crtc, dev) {
> if (crtc->primary->fb == fb) {
> @@ -1082,7 +1084,7 @@ static void legacy_remove_fb(struct drm_framebuffer *fb)
> drm_plane_force_disable(plane);
> }
> }
> - drm_modeset_unlock_all(dev);
> + DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
> }
>
> /**
> --
> 2.33.0
>

--
Sean Paul, Software Engineer, Google / Chromium OS