* [PATCH v3 1/6] drm/debugfs: create device-centered debugfs functions
2022-12-07 13:23 [PATCH v3 0/6] Introduce debugfs device-centered functions Maíra Canal
@ 2022-12-07 13:23 ` Maíra Canal
2022-12-08 12:12 ` Maxime Ripard
2022-12-07 13:23 ` [PATCH v3 2/6] drm: use new debugfs device-centered functions on DRM core files Maíra Canal
` (4 subsequent siblings)
5 siblings, 1 reply; 10+ messages in thread
From: Maíra Canal @ 2022-12-07 13:23 UTC (permalink / raw)
To: Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann,
David Airlie, Daniel Vetter, Oded Gabbay, Jani Nikula
Cc: Melissa Wen, André Almeida, Emma Anholt, Rodrigo Siqueira,
Wambui Karuga, dri-devel, linux-kernel, Maíra Canal,
Wambui Karuga
Introduce the ability to track requests for the addition of DRM debugfs
files at any time and have them added all at once during
drm_dev_register().
Drivers can add DRM debugfs files to a device-managed list and, during
drm_dev_register(), all added files will be created at once.
Now, the drivers can use the functions drm_debugfs_add_file() and
drm_debugfs_add_files() to create DRM debugfs files instead of using the
drm_debugfs_create_files() function.
Co-developed-by: Wambui Karuga <wambui.karugax@gmail.com>
Signed-off-by: Wambui Karuga <wambui.karugax@gmail.com>
Signed-off-by: Maíra Canal <mcanal@igalia.com>
---
drivers/gpu/drm/drm_debugfs.c | 70 +++++++++++++++++++++++++++++++++++
drivers/gpu/drm/drm_drv.c | 3 ++
include/drm/drm_debugfs.h | 41 ++++++++++++++++++++
include/drm/drm_device.h | 15 ++++++++
4 files changed, 129 insertions(+)
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index ee445f4605ba..988fc07b94b4 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -38,6 +38,7 @@
#include <drm/drm_edid.h>
#include <drm/drm_file.h>
#include <drm/drm_gem.h>
+#include <drm/drm_managed.h>
#include "drm_crtc_internal.h"
#include "drm_internal.h"
@@ -151,6 +152,21 @@ static int drm_debugfs_open(struct inode *inode, struct file *file)
return single_open(file, node->info_ent->show, node);
}
+static int drm_debugfs_entry_open(struct inode *inode, struct file *file)
+{
+ struct drm_debugfs_entry *entry = inode->i_private;
+ struct drm_debugfs_info *node = &entry->file;
+
+ return single_open(file, node->show, entry);
+}
+
+static const struct file_operations drm_debugfs_entry_fops = {
+ .owner = THIS_MODULE,
+ .open = drm_debugfs_entry_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
static const struct file_operations drm_debugfs_fops = {
.owner = THIS_MODULE,
@@ -207,6 +223,7 @@ int drm_debugfs_init(struct drm_minor *minor, int minor_id,
struct dentry *root)
{
struct drm_device *dev = minor->dev;
+ struct drm_debugfs_entry *entry, *tmp;
char name[64];
INIT_LIST_HEAD(&minor->debugfs_list);
@@ -230,6 +247,12 @@ int drm_debugfs_init(struct drm_minor *minor, int minor_id,
if (dev->driver->debugfs_init)
dev->driver->debugfs_init(minor);
+ list_for_each_entry_safe(entry, tmp, &dev->debugfs_list, list) {
+ debugfs_create_file(entry->file.name, S_IFREG | S_IRUGO,
+ minor->debugfs_root, entry, &drm_debugfs_entry_fops);
+ list_del(&entry->list);
+ }
+
return 0;
}
@@ -281,6 +304,53 @@ void drm_debugfs_cleanup(struct drm_minor *minor)
minor->debugfs_root = NULL;
}
+/**
+ * drm_debugfs_add_file - Add a given file to the DRM device debugfs file list
+ * @dev: drm device for the ioctl
+ * @name: debugfs file name
+ * @show: show callback
+ * @data: driver-private data, should not be device-specific
+ *
+ * Add a given file entry to the DRM device debugfs file list to be created on
+ * drm_debugfs_init.
+ */
+void drm_debugfs_add_file(struct drm_device *dev, const char *name,
+ int (*show)(struct seq_file*, void*), void *data)
+{
+ struct drm_debugfs_entry *entry = drmm_kzalloc(dev, sizeof(*entry), GFP_KERNEL);
+
+ 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);
+}
+EXPORT_SYMBOL(drm_debugfs_add_file);
+
+/**
+ * drm_debugfs_add_files - Add an array of files to the DRM device debugfs file list
+ * @dev: drm device for the ioctl
+ * @files: The array of files to create
+ * @count: The number of files given
+ *
+ * Add a given set of debugfs files represented by an array of
+ * &struct drm_debugfs_info in the DRM device debugfs file list.
+ */
+void drm_debugfs_add_files(struct drm_device *dev, const struct drm_debugfs_info *files, int count)
+{
+ int i;
+
+ for (i = 0; i < count; i++)
+ drm_debugfs_add_file(dev, files[i].name, files[i].show, files[i].data);
+}
+EXPORT_SYMBOL(drm_debugfs_add_files);
+
static int connector_show(struct seq_file *m, void *data)
{
struct drm_connector *connector = m->private;
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 203bf8d6c34c..c287488c776f 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -575,6 +575,7 @@ static void drm_dev_init_release(struct drm_device *dev, void *res)
mutex_destroy(&dev->clientlist_mutex);
mutex_destroy(&dev->filelist_mutex);
mutex_destroy(&dev->struct_mutex);
+ mutex_destroy(&dev->debugfs_mutex);
drm_legacy_destroy_members(dev);
}
@@ -608,12 +609,14 @@ static int drm_dev_init(struct drm_device *dev,
INIT_LIST_HEAD(&dev->filelist_internal);
INIT_LIST_HEAD(&dev->clientlist);
INIT_LIST_HEAD(&dev->vblank_event_list);
+ INIT_LIST_HEAD(&dev->debugfs_list);
spin_lock_init(&dev->event_lock);
mutex_init(&dev->struct_mutex);
mutex_init(&dev->filelist_mutex);
mutex_init(&dev->clientlist_mutex);
mutex_init(&dev->master_mutex);
+ mutex_init(&dev->debugfs_mutex);
ret = drmm_add_action_or_reset(dev, drm_dev_init_release, NULL);
if (ret)
diff --git a/include/drm/drm_debugfs.h b/include/drm/drm_debugfs.h
index 2188dc83957f..53b7297260a5 100644
--- a/include/drm/drm_debugfs.h
+++ b/include/drm/drm_debugfs.h
@@ -79,12 +79,43 @@ struct drm_info_node {
struct dentry *dent;
};
+/**
+ * struct drm_debugfs_info - debugfs info list entry
+ *
+ * This structure represents a debugfs file to be created by the drm
+ * core.
+ */
+struct drm_debugfs_info {
+ const char *name;
+ int (*show)(struct seq_file*, void*);
+ u32 driver_features;
+ void *data;
+};
+
+/**
+ * struct drm_debugfs_entry - Per-device debugfs node structure
+ *
+ * This structure represents a debugfs file, as an instantiation of a &struct
+ * drm_debugfs_info on a &struct drm_device.
+ */
+struct drm_debugfs_entry {
+ struct drm_device *dev;
+ struct drm_debugfs_info file;
+ struct list_head list;
+};
+
#if defined(CONFIG_DEBUG_FS)
void drm_debugfs_create_files(const struct drm_info_list *files,
int count, struct dentry *root,
struct drm_minor *minor);
int drm_debugfs_remove_files(const struct drm_info_list *files,
int count, struct drm_minor *minor);
+
+void drm_debugfs_add_file(struct drm_device *dev, const char *name,
+ int (*show)(struct seq_file*, void*), void *data);
+
+void drm_debugfs_add_files(struct drm_device *dev,
+ const struct drm_debugfs_info *files, int count);
#else
static inline void drm_debugfs_create_files(const struct drm_info_list *files,
int count, struct dentry *root,
@@ -96,6 +127,16 @@ static inline int drm_debugfs_remove_files(const struct drm_info_list *files,
{
return 0;
}
+
+static inline void drm_debugfs_add_file(struct drm_device *dev, const char *name,
+ int (*show)(struct seq_file*, void*),
+ void *data)
+{}
+
+static inline void drm_debugfs_add_files(struct drm_device *dev,
+ const struct drm_debugfs_info *files,
+ int count)
+{}
#endif
#endif /* _DRM_DEBUGFS_H_ */
diff --git a/include/drm/drm_device.h b/include/drm/drm_device.h
index 9923c7a6885e..fa6af1d57929 100644
--- a/include/drm/drm_device.h
+++ b/include/drm/drm_device.h
@@ -295,6 +295,21 @@ struct drm_device {
*/
struct drm_fb_helper *fb_helper;
+ /**
+ * @debugfs_mutex:
+ *
+ * Protects &debugfs_list access.
+ */
+ struct mutex debugfs_mutex;
+
+ /**
+ * @debugfs_list:
+ *
+ * List of debugfs files to be created by the DRM device. The files
+ * must be added during drm_dev_register().
+ */
+ struct list_head debugfs_list;
+
/* Everything below here is for legacy driver, never use! */
/* private: */
#if IS_ENABLED(CONFIG_DRM_LEGACY)
--
2.38.1
^ permalink raw reply related [flat|nested] 10+ messages in thread
* Re: [PATCH v3 1/6] drm/debugfs: create device-centered debugfs functions
2022-12-07 13:23 ` [PATCH v3 1/6] drm/debugfs: create device-centered debugfs functions Maíra Canal
@ 2022-12-08 12:12 ` Maxime Ripard
0 siblings, 0 replies; 10+ messages in thread
From: Maxime Ripard @ 2022-12-08 12:12 UTC (permalink / raw)
To: Maíra Canal
Cc: Maarten Lankhorst, Thomas Zimmermann, David Airlie,
Daniel Vetter, Oded Gabbay, Jani Nikula, Melissa Wen,
André Almeida, Emma Anholt, Rodrigo Siqueira, Wambui Karuga,
dri-devel, linux-kernel, Wambui Karuga
[-- Attachment #1: Type: text/plain, Size: 785 bytes --]
On Wed, Dec 07, 2022 at 10:23:20AM -0300, Maíra Canal wrote:
> Introduce the ability to track requests for the addition of DRM debugfs
> files at any time and have them added all at once during
> drm_dev_register().
>
> Drivers can add DRM debugfs files to a device-managed list and, during
> drm_dev_register(), all added files will be created at once.
>
> Now, the drivers can use the functions drm_debugfs_add_file() and
> drm_debugfs_add_files() to create DRM debugfs files instead of using the
> drm_debugfs_create_files() function.
>
> Co-developed-by: Wambui Karuga <wambui.karugax@gmail.com>
> Signed-off-by: Wambui Karuga <wambui.karugax@gmail.com>
> Signed-off-by: Maíra Canal <mcanal@igalia.com>
Reviewed-by: Maxime Ripard <maxime@cerno.tech>
Maxime
[-- Attachment #2: signature.asc --]
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^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH v3 2/6] drm: use new debugfs device-centered functions on DRM core files
2022-12-07 13:23 [PATCH v3 0/6] Introduce debugfs device-centered functions Maíra Canal
2022-12-07 13:23 ` [PATCH v3 1/6] drm/debugfs: create device-centered debugfs functions Maíra Canal
@ 2022-12-07 13:23 ` Maíra Canal
2022-12-08 12:12 ` Maxime Ripard
2022-12-07 13:23 ` [PATCH v3 3/6] drm/vc4: use new debugfs device-centered functions Maíra Canal
` (3 subsequent siblings)
5 siblings, 1 reply; 10+ messages in thread
From: Maíra Canal @ 2022-12-07 13:23 UTC (permalink / raw)
To: Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann,
David Airlie, Daniel Vetter, Oded Gabbay, Jani Nikula
Cc: Melissa Wen, André Almeida, Emma Anholt, Rodrigo Siqueira,
Wambui Karuga, dri-devel, linux-kernel, Maíra Canal
Replace the use of drm_debugfs_create_files() with the new
drm_debugfs_add_files() function in all DRM core files, centering the
debugfs files management on the drm_device instead of drm_minor.
Signed-off-by: Maíra Canal <mcanal@igalia.com>
---
drivers/gpu/drm/drm_atomic.c | 11 +++++------
drivers/gpu/drm/drm_client.c | 11 +++++------
drivers/gpu/drm/drm_debugfs.c | 18 ++++++++----------
drivers/gpu/drm/drm_framebuffer.c | 11 +++++------
drivers/gpu/drm/drm_gem_vram_helper.c | 11 +++++------
5 files changed, 28 insertions(+), 34 deletions(-)
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index e666799a46d5..5457c02ca1ab 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -1756,8 +1756,8 @@ EXPORT_SYMBOL(drm_state_dump);
#ifdef CONFIG_DEBUG_FS
static int drm_state_info(struct seq_file *m, void *data)
{
- struct drm_info_node *node = (struct drm_info_node *) m->private;
- struct drm_device *dev = node->minor->dev;
+ struct drm_debugfs_entry *entry = m->private;
+ struct drm_device *dev = entry->dev;
struct drm_printer p = drm_seq_file_printer(m);
__drm_state_dump(dev, &p, true);
@@ -1766,14 +1766,13 @@ static int drm_state_info(struct seq_file *m, void *data)
}
/* any use in debugfs files to dump individual planes/crtc/etc? */
-static const struct drm_info_list drm_atomic_debugfs_list[] = {
+static const struct drm_debugfs_info drm_atomic_debugfs_list[] = {
{"state", drm_state_info, 0},
};
void drm_atomic_debugfs_init(struct drm_minor *minor)
{
- drm_debugfs_create_files(drm_atomic_debugfs_list,
- ARRAY_SIZE(drm_atomic_debugfs_list),
- minor->debugfs_root, minor);
+ drm_debugfs_add_files(minor->dev, drm_atomic_debugfs_list,
+ ARRAY_SIZE(drm_atomic_debugfs_list));
}
#endif
diff --git a/drivers/gpu/drm/drm_client.c b/drivers/gpu/drm/drm_client.c
index fd67efe37c63..262ec64d4397 100644
--- a/drivers/gpu/drm/drm_client.c
+++ b/drivers/gpu/drm/drm_client.c
@@ -480,8 +480,8 @@ EXPORT_SYMBOL(drm_client_framebuffer_flush);
#ifdef CONFIG_DEBUG_FS
static int drm_client_debugfs_internal_clients(struct seq_file *m, void *data)
{
- struct drm_info_node *node = m->private;
- struct drm_device *dev = node->minor->dev;
+ struct drm_debugfs_entry *entry = m->private;
+ struct drm_device *dev = entry->dev;
struct drm_printer p = drm_seq_file_printer(m);
struct drm_client_dev *client;
@@ -493,14 +493,13 @@ static int drm_client_debugfs_internal_clients(struct seq_file *m, void *data)
return 0;
}
-static const struct drm_info_list drm_client_debugfs_list[] = {
+static const struct drm_debugfs_info drm_client_debugfs_list[] = {
{ "internal_clients", drm_client_debugfs_internal_clients, 0 },
};
void drm_client_debugfs_init(struct drm_minor *minor)
{
- drm_debugfs_create_files(drm_client_debugfs_list,
- ARRAY_SIZE(drm_client_debugfs_list),
- minor->debugfs_root, minor);
+ drm_debugfs_add_files(minor->dev, drm_client_debugfs_list,
+ ARRAY_SIZE(drm_client_debugfs_list));
}
#endif
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index 988fc07b94b4..d9d3ed7acc80 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -51,9 +51,8 @@
static int drm_name_info(struct seq_file *m, void *data)
{
- struct drm_info_node *node = (struct drm_info_node *) m->private;
- struct drm_minor *minor = node->minor;
- struct drm_device *dev = minor->dev;
+ struct drm_debugfs_entry *entry = m->private;
+ struct drm_device *dev = entry->dev;
struct drm_master *master;
mutex_lock(&dev->master_mutex);
@@ -73,8 +72,8 @@ static int drm_name_info(struct seq_file *m, void *data)
static int drm_clients_info(struct seq_file *m, void *data)
{
- struct drm_info_node *node = (struct drm_info_node *) m->private;
- struct drm_device *dev = node->minor->dev;
+ struct drm_debugfs_entry *entry = m->private;
+ struct drm_device *dev = entry->dev;
struct drm_file *priv;
kuid_t uid;
@@ -125,8 +124,8 @@ static int drm_gem_one_name_info(int id, void *ptr, void *data)
static int drm_gem_name_info(struct seq_file *m, void *data)
{
- struct drm_info_node *node = (struct drm_info_node *) m->private;
- struct drm_device *dev = node->minor->dev;
+ struct drm_debugfs_entry *entry = m->private;
+ struct drm_device *dev = entry->dev;
seq_printf(m, " name size handles refcount\n");
@@ -137,7 +136,7 @@ static int drm_gem_name_info(struct seq_file *m, void *data)
return 0;
}
-static const struct drm_info_list drm_debugfs_list[] = {
+static const struct drm_debugfs_info drm_debugfs_list[] = {
{"name", drm_name_info, 0},
{"clients", drm_clients_info, 0},
{"gem_names", drm_gem_name_info, DRIVER_GEM},
@@ -231,8 +230,7 @@ int drm_debugfs_init(struct drm_minor *minor, int minor_id,
sprintf(name, "%d", minor_id);
minor->debugfs_root = debugfs_create_dir(name, root);
- drm_debugfs_create_files(drm_debugfs_list, DRM_DEBUGFS_ENTRIES,
- minor->debugfs_root, minor);
+ drm_debugfs_add_files(minor->dev, drm_debugfs_list, DRM_DEBUGFS_ENTRIES);
if (drm_drv_uses_atomic_modeset(dev)) {
drm_atomic_debugfs_init(minor);
diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c
index 2dd97473ca10..aff3746dedfb 100644
--- a/drivers/gpu/drm/drm_framebuffer.c
+++ b/drivers/gpu/drm/drm_framebuffer.c
@@ -1203,8 +1203,8 @@ void drm_framebuffer_print_info(struct drm_printer *p, unsigned int indent,
#ifdef CONFIG_DEBUG_FS
static int drm_framebuffer_info(struct seq_file *m, void *data)
{
- struct drm_info_node *node = m->private;
- struct drm_device *dev = node->minor->dev;
+ struct drm_debugfs_entry *entry = m->private;
+ struct drm_device *dev = entry->dev;
struct drm_printer p = drm_seq_file_printer(m);
struct drm_framebuffer *fb;
@@ -1218,14 +1218,13 @@ static int drm_framebuffer_info(struct seq_file *m, void *data)
return 0;
}
-static const struct drm_info_list drm_framebuffer_debugfs_list[] = {
+static const struct drm_debugfs_info drm_framebuffer_debugfs_list[] = {
{ "framebuffer", drm_framebuffer_info, 0 },
};
void drm_framebuffer_debugfs_init(struct drm_minor *minor)
{
- drm_debugfs_create_files(drm_framebuffer_debugfs_list,
- ARRAY_SIZE(drm_framebuffer_debugfs_list),
- minor->debugfs_root, minor);
+ drm_debugfs_add_files(minor->dev, drm_framebuffer_debugfs_list,
+ ARRAY_SIZE(drm_framebuffer_debugfs_list));
}
#endif
diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c
index f59adffd938a..d40b3edb52d0 100644
--- a/drivers/gpu/drm/drm_gem_vram_helper.c
+++ b/drivers/gpu/drm/drm_gem_vram_helper.c
@@ -957,8 +957,8 @@ static struct ttm_device_funcs bo_driver = {
static int drm_vram_mm_debugfs(struct seq_file *m, void *data)
{
- struct drm_info_node *node = (struct drm_info_node *) m->private;
- struct drm_vram_mm *vmm = node->minor->dev->vram_mm;
+ struct drm_debugfs_entry *entry = m->private;
+ struct drm_vram_mm *vmm = entry->dev->vram_mm;
struct ttm_resource_manager *man = ttm_manager_type(&vmm->bdev, TTM_PL_VRAM);
struct drm_printer p = drm_seq_file_printer(m);
@@ -966,7 +966,7 @@ static int drm_vram_mm_debugfs(struct seq_file *m, void *data)
return 0;
}
-static const struct drm_info_list drm_vram_mm_debugfs_list[] = {
+static const struct drm_debugfs_info drm_vram_mm_debugfs_list[] = {
{ "vram-mm", drm_vram_mm_debugfs, 0, NULL },
};
@@ -978,9 +978,8 @@ static const struct drm_info_list drm_vram_mm_debugfs_list[] = {
*/
void drm_vram_mm_debugfs_init(struct drm_minor *minor)
{
- drm_debugfs_create_files(drm_vram_mm_debugfs_list,
- ARRAY_SIZE(drm_vram_mm_debugfs_list),
- minor->debugfs_root, minor);
+ drm_debugfs_add_files(minor->dev, drm_vram_mm_debugfs_list,
+ ARRAY_SIZE(drm_vram_mm_debugfs_list));
}
EXPORT_SYMBOL(drm_vram_mm_debugfs_init);
--
2.38.1
^ permalink raw reply related [flat|nested] 10+ messages in thread
* Re: [PATCH v3 2/6] drm: use new debugfs device-centered functions on DRM core files
2022-12-07 13:23 ` [PATCH v3 2/6] drm: use new debugfs device-centered functions on DRM core files Maíra Canal
@ 2022-12-08 12:12 ` Maxime Ripard
0 siblings, 0 replies; 10+ messages in thread
From: Maxime Ripard @ 2022-12-08 12:12 UTC (permalink / raw)
To: Maíra Canal
Cc: Maarten Lankhorst, Thomas Zimmermann, David Airlie,
Daniel Vetter, Oded Gabbay, Jani Nikula, Melissa Wen,
André Almeida, Emma Anholt, Rodrigo Siqueira, Wambui Karuga,
dri-devel, linux-kernel
[-- Attachment #1: Type: text/plain, Size: 367 bytes --]
On Wed, Dec 07, 2022 at 10:23:21AM -0300, Maíra Canal wrote:
> Replace the use of drm_debugfs_create_files() with the new
> drm_debugfs_add_files() function in all DRM core files, centering the
> debugfs files management on the drm_device instead of drm_minor.
>
> Signed-off-by: Maíra Canal <mcanal@igalia.com>
Reviewed-by: Maxime Ripard <maxime@cerno.tech>
[-- Attachment #2: signature.asc --]
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^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH v3 3/6] drm/vc4: use new debugfs device-centered functions
2022-12-07 13:23 [PATCH v3 0/6] Introduce debugfs device-centered functions Maíra Canal
2022-12-07 13:23 ` [PATCH v3 1/6] drm/debugfs: create device-centered debugfs functions Maíra Canal
2022-12-07 13:23 ` [PATCH v3 2/6] drm: use new debugfs device-centered functions on DRM core files Maíra Canal
@ 2022-12-07 13:23 ` Maíra Canal
2022-12-08 12:11 ` Maxime Ripard
2022-12-07 13:23 ` [PATCH v3 4/6] drm/v3d: " Maíra Canal
` (2 subsequent siblings)
5 siblings, 1 reply; 10+ messages in thread
From: Maíra Canal @ 2022-12-07 13:23 UTC (permalink / raw)
To: Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann,
David Airlie, Daniel Vetter, Oded Gabbay, Jani Nikula
Cc: Melissa Wen, André Almeida, Emma Anholt, Rodrigo Siqueira,
Wambui Karuga, dri-devel, linux-kernel, Maíra Canal
Currently, vc4 has its own debugfs infrastructure that adds the debugfs
files on drm_dev_register(). With the introduction of the new debugfs,
functions, replace the vc4 debugfs structure with the DRM debugfs
device-centered function, drm_debugfs_add_file().
Moreover, remove the explicit error handling of debugfs related functions,
considering that the only failure mode is -ENOMEM and also that error
handling is not recommended for debugfs functions, as pointed out in [1].
[1] https://lore.kernel.org/all/YWAmZdRwnAt6wh9B@kroah.com/
Signed-off-by: Maíra Canal <mcanal@igalia.com>
---
drivers/gpu/drm/vc4/vc4_bo.c | 10 +++------
drivers/gpu/drm/vc4/vc4_crtc.c | 7 ++----
drivers/gpu/drm/vc4/vc4_debugfs.c | 36 ++++++-------------------------
drivers/gpu/drm/vc4/vc4_dpi.c | 5 +----
drivers/gpu/drm/vc4/vc4_drv.c | 1 -
drivers/gpu/drm/vc4/vc4_drv.h | 32 ++++++---------------------
drivers/gpu/drm/vc4/vc4_dsi.c | 6 +-----
drivers/gpu/drm/vc4/vc4_hdmi.c | 12 ++++-------
drivers/gpu/drm/vc4/vc4_hvs.c | 24 ++++++---------------
drivers/gpu/drm/vc4/vc4_v3d.c | 14 ++++--------
drivers/gpu/drm/vc4/vc4_vec.c | 6 +-----
11 files changed, 37 insertions(+), 116 deletions(-)
diff --git a/drivers/gpu/drm/vc4/vc4_bo.c b/drivers/gpu/drm/vc4/vc4_bo.c
index 43d9b3a6a352..c2b7573bd92b 100644
--- a/drivers/gpu/drm/vc4/vc4_bo.c
+++ b/drivers/gpu/drm/vc4/vc4_bo.c
@@ -69,8 +69,8 @@ static void vc4_bo_stats_print(struct drm_printer *p, struct vc4_dev *vc4)
static int vc4_bo_stats_debugfs(struct seq_file *m, void *unused)
{
- struct drm_info_node *node = (struct drm_info_node *)m->private;
- struct drm_device *dev = node->minor->dev;
+ struct drm_debugfs_entry *entry = m->private;
+ struct drm_device *dev = entry->dev;
struct vc4_dev *vc4 = to_vc4_dev(dev);
struct drm_printer p = drm_seq_file_printer(m);
@@ -993,15 +993,11 @@ int vc4_bo_debugfs_init(struct drm_minor *minor)
{
struct drm_device *drm = minor->dev;
struct vc4_dev *vc4 = to_vc4_dev(drm);
- int ret;
if (!vc4->v3d)
return -ENODEV;
- ret = vc4_debugfs_add_file(minor, "bo_stats",
- vc4_bo_stats_debugfs, NULL);
- if (ret)
- return ret;
+ drm_debugfs_add_file(drm, "bo_stats", vc4_bo_stats_debugfs, NULL);
return 0;
}
diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
index 333529ed3a0d..4f8544ac040a 100644
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
@@ -1096,12 +1096,9 @@ int vc4_crtc_late_register(struct drm_crtc *crtc)
struct drm_device *drm = crtc->dev;
struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
const struct vc4_crtc_data *crtc_data = vc4_crtc_to_vc4_crtc_data(vc4_crtc);
- int ret;
- ret = vc4_debugfs_add_regset32(drm->primary, crtc_data->debugfs_name,
- &vc4_crtc->regset);
- if (ret)
- return ret;
+ vc4_debugfs_add_regset32(drm, crtc_data->debugfs_name,
+ &vc4_crtc->regset);
return 0;
}
diff --git a/drivers/gpu/drm/vc4/vc4_debugfs.c b/drivers/gpu/drm/vc4/vc4_debugfs.c
index 19cda4f91a82..fac624a663ea 100644
--- a/drivers/gpu/drm/vc4/vc4_debugfs.c
+++ b/drivers/gpu/drm/vc4/vc4_debugfs.c
@@ -34,9 +34,9 @@ vc4_debugfs_init(struct drm_minor *minor)
static int vc4_debugfs_regset32(struct seq_file *m, void *unused)
{
- struct drm_info_node *node = (struct drm_info_node *)m->private;
- struct drm_device *drm = node->minor->dev;
- struct debugfs_regset32 *regset = node->info_ent->data;
+ struct drm_debugfs_entry *entry = m->private;
+ struct drm_device *drm = entry->dev;
+ struct debugfs_regset32 *regset = entry->file.data;
struct drm_printer p = drm_seq_file_printer(m);
int idx;
@@ -50,31 +50,9 @@ static int vc4_debugfs_regset32(struct seq_file *m, void *unused)
return 0;
}
-int vc4_debugfs_add_file(struct drm_minor *minor,
- const char *name,
- int (*show)(struct seq_file*, void*),
- void *data)
+void vc4_debugfs_add_regset32(struct drm_device *drm,
+ const char *name,
+ struct debugfs_regset32 *regset)
{
- struct drm_device *dev = minor->dev;
- struct dentry *root = minor->debugfs_root;
- struct drm_info_list *file;
-
- file = drmm_kzalloc(dev, sizeof(*file), GFP_KERNEL);
- if (!file)
- return -ENOMEM;
-
- file->name = name;
- file->show = show;
- file->data = data;
-
- drm_debugfs_create_files(file, 1, root, minor);
-
- return 0;
-}
-
-int vc4_debugfs_add_regset32(struct drm_minor *minor,
- const char *name,
- struct debugfs_regset32 *regset)
-{
- return vc4_debugfs_add_file(minor, name, vc4_debugfs_regset32, regset);
+ drm_debugfs_add_file(drm, name, vc4_debugfs_regset32, regset);
}
diff --git a/drivers/gpu/drm/vc4/vc4_dpi.c b/drivers/gpu/drm/vc4/vc4_dpi.c
index a7bebfa5d5b0..ca97a5702dc0 100644
--- a/drivers/gpu/drm/vc4/vc4_dpi.c
+++ b/drivers/gpu/drm/vc4/vc4_dpi.c
@@ -258,11 +258,8 @@ static int vc4_dpi_late_register(struct drm_encoder *encoder)
{
struct drm_device *drm = encoder->dev;
struct vc4_dpi *dpi = to_vc4_dpi(encoder);
- int ret;
- ret = vc4_debugfs_add_regset32(drm->primary, "dpi_regs", &dpi->regset);
- if (ret)
- return ret;
+ vc4_debugfs_add_regset32(drm, "dpi_regs", &dpi->regset);
return 0;
}
diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c
index 5990d8f8c363..c6ca41f0572d 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.c
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
@@ -320,7 +320,6 @@ static int vc4_drm_bind(struct device *dev)
drm = &vc4->base;
platform_set_drvdata(pdev, drm);
- INIT_LIST_HEAD(&vc4->debugfs_list);
if (!is_vc5) {
ret = drmm_mutex_init(drm, &vc4->bin_bo_lock);
diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h
index 6af615c2eb65..66520d987b16 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.h
+++ b/drivers/gpu/drm/vc4/vc4_drv.h
@@ -221,11 +221,6 @@ struct vc4_dev {
struct drm_private_obj hvs_channels;
struct drm_private_obj load_tracker;
- /* List of vc4_debugfs_info_entry for adding to debugfs once
- * the minor is available (after drm_dev_register()).
- */
- struct list_head debugfs_list;
-
/* Mutex for binner bo allocation. */
struct mutex bin_bo_lock;
/* Reference count for our binner bo. */
@@ -889,28 +884,15 @@ void vc4_crtc_get_margins(struct drm_crtc_state *state,
/* vc4_debugfs.c */
void vc4_debugfs_init(struct drm_minor *minor);
#ifdef CONFIG_DEBUG_FS
-int vc4_debugfs_add_file(struct drm_minor *minor,
- const char *filename,
- int (*show)(struct seq_file*, void*),
- void *data);
-int vc4_debugfs_add_regset32(struct drm_minor *minor,
- const char *filename,
- struct debugfs_regset32 *regset);
+void vc4_debugfs_add_regset32(struct drm_device *drm,
+ const char *filename,
+ struct debugfs_regset32 *regset);
#else
-static inline int vc4_debugfs_add_file(struct drm_minor *minor,
- const char *filename,
- int (*show)(struct seq_file*, void*),
- void *data)
-{
- return 0;
-}
-static inline int vc4_debugfs_add_regset32(struct drm_minor *minor,
- const char *filename,
- struct debugfs_regset32 *regset)
-{
- return 0;
-}
+static inline void vc4_debugfs_add_regset32(struct drm_device *drm,
+ const char *filename,
+ struct debugfs_regset32 *regset)
+{}
#endif
/* vc4_drv.c */
diff --git a/drivers/gpu/drm/vc4/vc4_dsi.c b/drivers/gpu/drm/vc4/vc4_dsi.c
index 878e05d79e81..1a3f4306d51e 100644
--- a/drivers/gpu/drm/vc4/vc4_dsi.c
+++ b/drivers/gpu/drm/vc4/vc4_dsi.c
@@ -1376,12 +1376,8 @@ static int vc4_dsi_late_register(struct drm_encoder *encoder)
{
struct drm_device *drm = encoder->dev;
struct vc4_dsi *dsi = to_vc4_dsi(encoder);
- int ret;
- ret = vc4_debugfs_add_regset32(drm->primary, dsi->variant->debugfs_name,
- &dsi->regset);
- if (ret)
- return ret;
+ vc4_debugfs_add_regset32(drm, dsi->variant->debugfs_name, &dsi->regset);
return 0;
}
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 12a00d644b61..0d3313c71f2f 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -160,8 +160,8 @@ static bool vc4_hdmi_is_full_range_rgb(struct vc4_hdmi *vc4_hdmi,
static int vc4_hdmi_debugfs_regs(struct seq_file *m, void *unused)
{
- struct drm_info_node *node = (struct drm_info_node *)m->private;
- struct vc4_hdmi *vc4_hdmi = node->info_ent->data;
+ struct drm_debugfs_entry *entry = m->private;
+ struct vc4_hdmi *vc4_hdmi = entry->file.data;
struct drm_device *drm = vc4_hdmi->connector.dev;
struct drm_printer p = drm_seq_file_printer(m);
int idx;
@@ -1995,13 +1995,9 @@ static int vc4_hdmi_late_register(struct drm_encoder *encoder)
struct drm_device *drm = encoder->dev;
struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
const struct vc4_hdmi_variant *variant = vc4_hdmi->variant;
- int ret;
- ret = vc4_debugfs_add_file(drm->primary, variant->debugfs_name,
- vc4_hdmi_debugfs_regs,
- vc4_hdmi);
- if (ret)
- return ret;
+ drm_debugfs_add_file(drm, variant->debugfs_name,
+ vc4_hdmi_debugfs_regs, vc4_hdmi);
return 0;
}
diff --git a/drivers/gpu/drm/vc4/vc4_hvs.c b/drivers/gpu/drm/vc4/vc4_hvs.c
index c4453a5ae163..c5c4236ead51 100644
--- a/drivers/gpu/drm/vc4/vc4_hvs.c
+++ b/drivers/gpu/drm/vc4/vc4_hvs.c
@@ -93,8 +93,8 @@ void vc4_hvs_dump_state(struct vc4_hvs *hvs)
static int vc4_hvs_debugfs_underrun(struct seq_file *m, void *data)
{
- struct drm_info_node *node = m->private;
- struct drm_device *dev = node->minor->dev;
+ struct drm_debugfs_entry *entry = m->private;
+ struct drm_device *dev = entry->dev;
struct vc4_dev *vc4 = to_vc4_dev(dev);
struct drm_printer p = drm_seq_file_printer(m);
@@ -105,8 +105,8 @@ static int vc4_hvs_debugfs_underrun(struct seq_file *m, void *data)
static int vc4_hvs_debugfs_dlist(struct seq_file *m, void *data)
{
- struct drm_info_node *node = m->private;
- struct drm_device *dev = node->minor->dev;
+ struct drm_debugfs_entry *entry = m->private;
+ struct drm_device *dev = entry->dev;
struct vc4_dev *vc4 = to_vc4_dev(dev);
struct vc4_hvs *hvs = vc4->hvs;
struct drm_printer p = drm_seq_file_printer(m);
@@ -740,7 +740,6 @@ int vc4_hvs_debugfs_init(struct drm_minor *minor)
struct drm_device *drm = minor->dev;
struct vc4_dev *vc4 = to_vc4_dev(drm);
struct vc4_hvs *hvs = vc4->hvs;
- int ret;
if (!vc4->hvs)
return -ENODEV;
@@ -750,20 +749,11 @@ int vc4_hvs_debugfs_init(struct drm_minor *minor)
minor->debugfs_root,
&vc4->load_tracker_enabled);
- ret = vc4_debugfs_add_file(minor, "hvs_dlists",
- vc4_hvs_debugfs_dlist, NULL);
- if (ret)
- return ret;
+ drm_debugfs_add_file(drm, "hvs_dlists", vc4_hvs_debugfs_dlist, NULL);
- ret = vc4_debugfs_add_file(minor, "hvs_underrun",
- vc4_hvs_debugfs_underrun, NULL);
- if (ret)
- return ret;
+ drm_debugfs_add_file(drm, "hvs_underrun", vc4_hvs_debugfs_underrun, NULL);
- ret = vc4_debugfs_add_regset32(minor, "hvs_regs",
- &hvs->regset);
- if (ret)
- return ret;
+ vc4_debugfs_add_regset32(drm, "hvs_regs", &hvs->regset);
return 0;
}
diff --git a/drivers/gpu/drm/vc4/vc4_v3d.c b/drivers/gpu/drm/vc4/vc4_v3d.c
index 56abb0d6bc39..29a664c8bf44 100644
--- a/drivers/gpu/drm/vc4/vc4_v3d.c
+++ b/drivers/gpu/drm/vc4/vc4_v3d.c
@@ -96,8 +96,8 @@ static const struct debugfs_reg32 v3d_regs[] = {
static int vc4_v3d_debugfs_ident(struct seq_file *m, void *unused)
{
- struct drm_info_node *node = (struct drm_info_node *)m->private;
- struct drm_device *dev = node->minor->dev;
+ struct drm_debugfs_entry *entry = m->private;
+ struct drm_device *dev = entry->dev;
struct vc4_dev *vc4 = to_vc4_dev(dev);
int ret = vc4_v3d_pm_get(vc4);
@@ -404,19 +404,13 @@ int vc4_v3d_debugfs_init(struct drm_minor *minor)
struct drm_device *drm = minor->dev;
struct vc4_dev *vc4 = to_vc4_dev(drm);
struct vc4_v3d *v3d = vc4->v3d;
- int ret;
if (!vc4->v3d)
return -ENODEV;
- ret = vc4_debugfs_add_file(minor, "v3d_ident",
- vc4_v3d_debugfs_ident, NULL);
- if (ret)
- return ret;
+ drm_debugfs_add_file(drm, "v3d_ident", vc4_v3d_debugfs_ident, NULL);
- ret = vc4_debugfs_add_regset32(minor, "v3d_regs", &v3d->regset);
- if (ret)
- return ret;
+ vc4_debugfs_add_regset32(drm, "v3d_regs", &v3d->regset);
return 0;
}
diff --git a/drivers/gpu/drm/vc4/vc4_vec.c b/drivers/gpu/drm/vc4/vc4_vec.c
index e270a4099be3..727cc75ae2c7 100644
--- a/drivers/gpu/drm/vc4/vc4_vec.c
+++ b/drivers/gpu/drm/vc4/vc4_vec.c
@@ -707,12 +707,8 @@ static int vc4_vec_late_register(struct drm_encoder *encoder)
{
struct drm_device *drm = encoder->dev;
struct vc4_vec *vec = encoder_to_vc4_vec(encoder);
- int ret;
- ret = vc4_debugfs_add_regset32(drm->primary, "vec_regs",
- &vec->regset);
- if (ret)
- return ret;
+ vc4_debugfs_add_regset32(drm, "vec_regs", &vec->regset);
return 0;
}
--
2.38.1
^ permalink raw reply related [flat|nested] 10+ messages in thread
* Re: [PATCH v3 3/6] drm/vc4: use new debugfs device-centered functions
2022-12-07 13:23 ` [PATCH v3 3/6] drm/vc4: use new debugfs device-centered functions Maíra Canal
@ 2022-12-08 12:11 ` Maxime Ripard
0 siblings, 0 replies; 10+ messages in thread
From: Maxime Ripard @ 2022-12-08 12:11 UTC (permalink / raw)
To: Maíra Canal
Cc: Maarten Lankhorst, Thomas Zimmermann, David Airlie,
Daniel Vetter, Oded Gabbay, Jani Nikula, Melissa Wen,
André Almeida, Emma Anholt, Rodrigo Siqueira, Wambui Karuga,
dri-devel, linux-kernel
[-- Attachment #1: Type: text/plain, Size: 746 bytes --]
On Wed, Dec 07, 2022 at 10:23:22AM -0300, Maíra Canal wrote:
> Currently, vc4 has its own debugfs infrastructure that adds the debugfs
> files on drm_dev_register(). With the introduction of the new debugfs,
> functions, replace the vc4 debugfs structure with the DRM debugfs
> device-centered function, drm_debugfs_add_file().
>
> Moreover, remove the explicit error handling of debugfs related functions,
> considering that the only failure mode is -ENOMEM and also that error
> handling is not recommended for debugfs functions, as pointed out in [1].
>
> [1] https://lore.kernel.org/all/YWAmZdRwnAt6wh9B@kroah.com/
>
> Signed-off-by: Maíra Canal <mcanal@igalia.com>
Reviewed-by: Maxime Ripard <maxime@cerno.tech>
Maxime
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 228 bytes --]
^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH v3 4/6] drm/v3d: use new debugfs device-centered functions
2022-12-07 13:23 [PATCH v3 0/6] Introduce debugfs device-centered functions Maíra Canal
` (2 preceding siblings ...)
2022-12-07 13:23 ` [PATCH v3 3/6] drm/vc4: use new debugfs device-centered functions Maíra Canal
@ 2022-12-07 13:23 ` Maíra Canal
2022-12-07 13:23 ` [PATCH v3 5/6] drm/vkms: " Maíra Canal
2022-12-07 13:23 ` [PATCH v3 6/6] drm/todo: update the debugfs clean up task Maíra Canal
5 siblings, 0 replies; 10+ messages in thread
From: Maíra Canal @ 2022-12-07 13:23 UTC (permalink / raw)
To: Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann,
David Airlie, Daniel Vetter, Oded Gabbay, Jani Nikula
Cc: Melissa Wen, André Almeida, Emma Anholt, Rodrigo Siqueira,
Wambui Karuga, dri-devel, linux-kernel, Maíra Canal
Replace the use of drm_debugfs_create_files() with the new
drm_debugfs_add_files() function, which centers the debugfs files
management on the drm_device instead of drm_minor.
Signed-off-by: Maíra Canal <mcanal@igalia.com>
---
drivers/gpu/drm/v3d/v3d_debugfs.c | 22 ++++++++++------------
1 file changed, 10 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/v3d/v3d_debugfs.c b/drivers/gpu/drm/v3d/v3d_debugfs.c
index efbde124c296..330669f51fa7 100644
--- a/drivers/gpu/drm/v3d/v3d_debugfs.c
+++ b/drivers/gpu/drm/v3d/v3d_debugfs.c
@@ -79,8 +79,8 @@ static const struct v3d_reg_def v3d_csd_reg_defs[] = {
static int v3d_v3d_debugfs_regs(struct seq_file *m, void *unused)
{
- struct drm_info_node *node = (struct drm_info_node *)m->private;
- struct drm_device *dev = node->minor->dev;
+ struct drm_debugfs_entry *entry = m->private;
+ struct drm_device *dev = entry->dev;
struct v3d_dev *v3d = to_v3d_dev(dev);
int i, core;
@@ -126,8 +126,8 @@ static int v3d_v3d_debugfs_regs(struct seq_file *m, void *unused)
static int v3d_v3d_debugfs_ident(struct seq_file *m, void *unused)
{
- struct drm_info_node *node = (struct drm_info_node *)m->private;
- struct drm_device *dev = node->minor->dev;
+ struct drm_debugfs_entry *entry = m->private;
+ struct drm_device *dev = entry->dev;
struct v3d_dev *v3d = to_v3d_dev(dev);
u32 ident0, ident1, ident2, ident3, cores;
int core;
@@ -188,8 +188,8 @@ static int v3d_v3d_debugfs_ident(struct seq_file *m, void *unused)
static int v3d_debugfs_bo_stats(struct seq_file *m, void *unused)
{
- struct drm_info_node *node = (struct drm_info_node *)m->private;
- struct drm_device *dev = node->minor->dev;
+ struct drm_debugfs_entry *entry = m->private;
+ struct drm_device *dev = entry->dev;
struct v3d_dev *v3d = to_v3d_dev(dev);
mutex_lock(&v3d->bo_lock);
@@ -204,8 +204,8 @@ static int v3d_debugfs_bo_stats(struct seq_file *m, void *unused)
static int v3d_measure_clock(struct seq_file *m, void *unused)
{
- struct drm_info_node *node = (struct drm_info_node *)m->private;
- struct drm_device *dev = node->minor->dev;
+ struct drm_debugfs_entry *entry = m->private;
+ struct drm_device *dev = entry->dev;
struct v3d_dev *v3d = to_v3d_dev(dev);
uint32_t cycles;
int core = 0;
@@ -236,7 +236,7 @@ static int v3d_measure_clock(struct seq_file *m, void *unused)
return 0;
}
-static const struct drm_info_list v3d_debugfs_list[] = {
+static const struct drm_debugfs_info v3d_debugfs_list[] = {
{"v3d_ident", v3d_v3d_debugfs_ident, 0},
{"v3d_regs", v3d_v3d_debugfs_regs, 0},
{"measure_clock", v3d_measure_clock, 0},
@@ -246,7 +246,5 @@ static const struct drm_info_list v3d_debugfs_list[] = {
void
v3d_debugfs_init(struct drm_minor *minor)
{
- drm_debugfs_create_files(v3d_debugfs_list,
- ARRAY_SIZE(v3d_debugfs_list),
- minor->debugfs_root, minor);
+ drm_debugfs_add_files(minor->dev, v3d_debugfs_list, ARRAY_SIZE(v3d_debugfs_list));
}
--
2.38.1
^ permalink raw reply related [flat|nested] 10+ messages in thread
* [PATCH v3 5/6] drm/vkms: use new debugfs device-centered functions
2022-12-07 13:23 [PATCH v3 0/6] Introduce debugfs device-centered functions Maíra Canal
` (3 preceding siblings ...)
2022-12-07 13:23 ` [PATCH v3 4/6] drm/v3d: " Maíra Canal
@ 2022-12-07 13:23 ` Maíra Canal
2022-12-07 13:23 ` [PATCH v3 6/6] drm/todo: update the debugfs clean up task Maíra Canal
5 siblings, 0 replies; 10+ messages in thread
From: Maíra Canal @ 2022-12-07 13:23 UTC (permalink / raw)
To: Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann,
David Airlie, Daniel Vetter, Oded Gabbay, Jani Nikula
Cc: Melissa Wen, André Almeida, Emma Anholt, Rodrigo Siqueira,
Wambui Karuga, dri-devel, linux-kernel, Maíra Canal
Replace the use of drm_debugfs_create_files() with the new
drm_debugfs_add_files() function, which centers the debugfs files
management on the drm_device instead of drm_minor. Moreover, remove the
debugfs_init hook and add the debugfs files directly on vkms_create(),
before drm_dev_register().
Signed-off-by: Maíra Canal <mcanal@igalia.com>
---
drivers/gpu/drm/vkms/vkms_drv.c | 17 ++++++-----------
1 file changed, 6 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/vkms/vkms_drv.c b/drivers/gpu/drm/vkms/vkms_drv.c
index 69346906ec81..6d3a2d57d992 100644
--- a/drivers/gpu/drm/vkms/vkms_drv.c
+++ b/drivers/gpu/drm/vkms/vkms_drv.c
@@ -92,8 +92,8 @@ static void vkms_atomic_commit_tail(struct drm_atomic_state *old_state)
static int vkms_config_show(struct seq_file *m, void *data)
{
- struct drm_info_node *node = (struct drm_info_node *)m->private;
- struct drm_device *dev = node->minor->dev;
+ struct drm_debugfs_entry *entry = m->private;
+ struct drm_device *dev = entry->dev;
struct vkms_device *vkmsdev = drm_device_to_vkms_device(dev);
seq_printf(m, "writeback=%d\n", vkmsdev->config->writeback);
@@ -103,24 +103,16 @@ static int vkms_config_show(struct seq_file *m, void *data)
return 0;
}
-static const struct drm_info_list vkms_config_debugfs_list[] = {
+static const struct drm_debugfs_info vkms_config_debugfs_list[] = {
{ "vkms_config", vkms_config_show, 0 },
};
-static void vkms_config_debugfs_init(struct drm_minor *minor)
-{
- drm_debugfs_create_files(vkms_config_debugfs_list, ARRAY_SIZE(vkms_config_debugfs_list),
- minor->debugfs_root, minor);
-}
-
static const struct drm_driver vkms_driver = {
.driver_features = DRIVER_MODESET | DRIVER_ATOMIC | DRIVER_GEM,
.release = vkms_release,
.fops = &vkms_driver_fops,
DRM_GEM_SHMEM_DRIVER_OPS,
- .debugfs_init = vkms_config_debugfs_init,
-
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
.date = DRIVER_DATE,
@@ -202,6 +194,9 @@ static int vkms_create(struct vkms_config *config)
if (ret)
goto out_devres;
+ drm_debugfs_add_files(&vkms_device->drm, vkms_config_debugfs_list,
+ ARRAY_SIZE(vkms_config_debugfs_list));
+
ret = drm_dev_register(&vkms_device->drm, 0);
if (ret)
goto out_devres;
--
2.38.1
^ permalink raw reply related [flat|nested] 10+ messages in thread
* [PATCH v3 6/6] drm/todo: update the debugfs clean up task
2022-12-07 13:23 [PATCH v3 0/6] Introduce debugfs device-centered functions Maíra Canal
` (4 preceding siblings ...)
2022-12-07 13:23 ` [PATCH v3 5/6] drm/vkms: " Maíra Canal
@ 2022-12-07 13:23 ` Maíra Canal
5 siblings, 0 replies; 10+ messages in thread
From: Maíra Canal @ 2022-12-07 13:23 UTC (permalink / raw)
To: Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann,
David Airlie, Daniel Vetter, Oded Gabbay, Jani Nikula
Cc: Melissa Wen, André Almeida, Emma Anholt, Rodrigo Siqueira,
Wambui Karuga, dri-devel, linux-kernel, Maíra Canal
The structs drm_debugfs_info and drm_debugfs_entry introduced a new
debugfs structure to DRM, centered on drm_device instead of drm_minor.
Therefore, remove the tasks related to create a new device-centered
debugfs structure and add a new task to replace the use of
drm_debugfs_create_files() for the use of drm_debugfs_add_file() and
drm_debugfs_add_files().
Signed-off-by: Maíra Canal <mcanal@igalia.com>
---
Documentation/gpu/todo.rst | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst
index b2c6aaf1edf2..f64abf69f341 100644
--- a/Documentation/gpu/todo.rst
+++ b/Documentation/gpu/todo.rst
@@ -508,17 +508,14 @@ Clean up the debugfs support
There's a bunch of issues with it:
-- The drm_info_list ->show() function doesn't even bother to cast to the drm
- structure for you. This is lazy.
+- Convert drivers to support the drm_debugfs_add_files() function instead of
+ the drm_debugfs_create_files() function.
- We probably want to have some support for debugfs files on crtc/connectors and
maybe other kms objects directly in core. There's even drm_print support in
the funcs for these objects to dump kms state, so it's all there. And then the
->show() functions should obviously give you a pointer to the right object.
-- The drm_info_list stuff is centered on drm_minor instead of drm_device. For
- anything we want to print drm_device (or maybe drm_file) is the right thing.
-
- The drm_driver->debugfs_init hooks we have is just an artifact of the old
midlayered load sequence. DRM debugfs should work more like sysfs, where you
can create properties/files for an object anytime you want, and the core
@@ -527,8 +524,6 @@ There's a bunch of issues with it:
this (together with the drm_minor->drm_device move) would allow us to remove
debugfs_init.
-Previous RFC that hasn't landed yet: https://lore.kernel.org/dri-devel/20200513114130.28641-2-wambui.karugax@gmail.com/
-
Contact: Daniel Vetter
Level: Intermediate
--
2.38.1
^ permalink raw reply related [flat|nested] 10+ messages in thread