Hi Noralf,
Thank you for the patch.
On Monday, 30 October 2017 18:29:38 EET Noralf Trønnes wrote:
> Add debugfs file that dumps info about the framebuffers and its planes.
> Also dump info about any connected gem object(s).
>
> Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
> Signed-off-by: Noralf Trønnes <noralf@xxxxxxxxxxx>
> ---
> drivers/gpu/drm/drm_debugfs.c | 6 ++++
> drivers/gpu/drm/drm_framebuffer.c | 59 ++++++++++++++++++++++++++++++++++++
> drivers/gpu/drm/drm_gem.c | 17 +++++++++++
> drivers/gpu/drm/drm_internal.h | 7 +++++
> include/drm/drm_drv.h | 11 ++++++++
> 5 files changed, 100 insertions(+)
>
> diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
> index c1807d5754b2..550f29de6c1f 100644
> --- a/drivers/gpu/drm/drm_debugfs.c
> +++ b/drivers/gpu/drm/drm_debugfs.c
> @@ -158,6 +158,12 @@ int drm_debugfs_init(struct drm_minor *minor, int
> minor_id, }
> }
>
> + ret = drm_framebuffer_debugfs_init(minor);
> + if (ret) {
> + DRM_ERROR("Failed to create framebuffer debugfs file\n");
> + return ret;
> + }
> +
> if (dev->driver->debugfs_init) {
> ret = dev->driver->debugfs_init(minor);
> if (ret) {
> diff --git a/drivers/gpu/drm/drm_framebuffer.c
> b/drivers/gpu/drm/drm_framebuffer.c index af279844d7ce..4f7873a1b922 100644
> --- a/drivers/gpu/drm/drm_framebuffer.c
> +++ b/drivers/gpu/drm/drm_framebuffer.c
> @@ -25,7 +25,9 @@
> #include <drm/drm_auth.h>
> #include <drm/drm_framebuffer.h>
> #include <drm/drm_atomic.h>
> +#include <drm/drm_print.h>
>
> +#include "drm_internal.h"
> #include "drm_crtc_internal.h"
>
> /**
> @@ -955,3 +957,60 @@ int drm_framebuffer_plane_height(int height,
> return fb_plane_height(height, fb->format, plane);
> }
> EXPORT_SYMBOL(drm_framebuffer_plane_height);
> +
> +void drm_framebuffer_print_info(struct drm_printer *p, unsigned int indent,
> + const struct drm_framebuffer *fb)
> +{
> + struct drm_format_name_buf format_name;
> + int i;
i is never negative, you can make it an unsigned int.
> + drm_printf_indent(p, indent, "refcount=%d\n",
> + drm_framebuffer_read_refcount(fb));
drm_framebuffer_read_refcount() returns an unsigned int, the printk format
should be %u.
> + drm_printf_indent(p, indent, "format=%s\n",
> + drm_get_format_name(fb->format->format, &format_name));
> + drm_printf_indent(p, indent, "modifier=0x%llx\n", fb->modifier);
> + drm_printf_indent(p, indent, "size=%dx%d\n", fb->width, fb->height);
Ditto here, %ux%u.
> + drm_printf_indent(p, indent, "layers:\n");
> +
> + for (i = 0; i < fb->format->num_planes; i++) {
> + drm_printf_indent(p, indent + 1, "size[%d]=%dx%d\n", i,
> + drm_framebuffer_plane_width(fb->width, fb, i),
> + drm_framebuffer_plane_height(fb->height, fb, i));
> + drm_printf_indent(p, indent + 1, "pitch[%d]=%u\n", i, fb->pitches[i]);
> + drm_printf_indent(p, indent + 1, "offset[%d]=%u\n", i, fb->offsets[i]);
> + drm_printf_indent(p, indent + 1, "obj[%d]:%s\n", i,
> + fb->obj[i] ? "" : "(null)");
And in various places here too.
> + if (fb->obj[i])
> + drm_gem_print_info(p, indent + 2, fb->obj[i]);
> + }
> +}
> +
> +#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_printer p = drm_seq_file_printer(m);
> + struct drm_framebuffer *fb;
> +
> + mutex_lock(&dev->mode_config.fb_lock);
> + drm_for_each_fb(fb, dev) {
> + drm_printf(&p, "framebuffer[%d]:\n", fb->base.id);
fb->base.id is an unsigned int, the printk format should be %u.
> + drm_framebuffer_print_info(&p, 1, fb);
> + }
> + mutex_unlock(&dev->mode_config.fb_lock);
> +
> + return 0;
> +}
> +
> +static const struct drm_info_list drm_framebuffer_debugfs_list[] = {
> + { "framebuffer", drm_framebuffer_info, 0 },
> +};
> +
> +int drm_framebuffer_debugfs_init(struct drm_minor *minor)
> +{
> + return drm_debugfs_create_files(drm_framebuffer_debugfs_list,
> + ARRAY_SIZE(drm_framebuffer_debugfs_list),
> + minor->debugfs_root, minor);
> +}
> +#endif
> diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
> index 4c84b23d37cc..152bd6210dde 100644
> --- a/drivers/gpu/drm/drm_gem.c
> +++ b/drivers/gpu/drm/drm_gem.c
> @@ -40,6 +40,7 @@
> #include <drm/drmP.h>
> #include <drm/drm_vma_manager.h>
> #include <drm/drm_gem.h>
> +#include <drm/drm_print.h>
> #include "drm_internal.h"
>
> /** @file drm_gem.c
> @@ -1040,3 +1041,19 @@ int drm_gem_mmap(struct file *filp, struct
> vm_area_struct *vma) return ret;
> }
> EXPORT_SYMBOL(drm_gem_mmap);
> +
> +void drm_gem_print_info(struct drm_printer *p, unsigned int indent,
> + const struct drm_gem_object *obj)
> +{
> + drm_printf_indent(p, indent, "name=%d\n", obj->name);
> + drm_printf_indent(p, indent, "refcount=%d\n",
> + kref_read(&obj->refcount));
kref_read() returns an unsigned int, the printk format should be %u.
> + drm_printf_indent(p, indent, "start=%08lx\n",
> + drm_vma_node_start(&obj->vma_node));
> + drm_printf_indent(p, indent, "size=%zu\n", obj->size);
> + drm_printf_indent(p, indent, "imported=%s\n",
> + obj->import_attach ? "yes" : "no");
> +
> + if (obj->dev->driver->gem_print_info)
> + obj->dev->driver->gem_print_info(p, indent, obj);
> +}
> diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h
> index fbc3f308fa19..430ce3fe4f3b 100644
> --- a/drivers/gpu/drm/drm_internal.h
> +++ b/drivers/gpu/drm/drm_internal.h
> @@ -106,6 +106,8 @@ int drm_gem_open_ioctl(struct drm_device *dev, void
> *data, struct drm_file *file_priv);
> void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
> void drm_gem_release(struct drm_device *dev, struct drm_file
> *file_private);
> +void drm_gem_print_info(struct drm_printer *p, unsigned int indent,
> + const struct drm_gem_object *obj);
>
> /* drm_debugfs.c drm_debugfs_crc.c */
> #if defined(CONFIG_DEBUG_FS)
> @@ -173,3 +175,8 @@ int drm_syncobj_reset_ioctl(struct drm_device *dev, void
> *data, struct drm_file *file_private);
> int drm_syncobj_signal_ioctl(struct drm_device *dev, void *data,
> struct drm_file *file_private);
> +
> +/* drm_framebuffer.c */
> +void drm_framebuffer_print_info(struct drm_printer *p, unsigned int indent,
> + const struct drm_framebuffer *fb);
> +int drm_framebuffer_debugfs_init(struct drm_minor *minor);
> diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h
> index 0e90ef24214b..434de999c3ba 100644
> --- a/include/drm/drm_drv.h
> +++ b/include/drm/drm_drv.h
> @@ -39,6 +39,7 @@ struct drm_minor;
> struct dma_buf_attachment;
> struct drm_display_mode;
> struct drm_mode_create_dumb;
> +struct drm_printer;
>
> /* driver capabilities and requirements mask */
> #define DRIVER_USE_AGP 0x1
> @@ -428,6 +429,16 @@ struct drm_driver {
> */
> void (*gem_close_object) (struct drm_gem_object *, struct drm_file *);
>
> + /**
> + * @gem_print_info:
> + *
> + * If driver subclasses struct &drm_gem_object, it can implement this
> + * optional hook for printing additional driver specific info.
> + * See drm_gem_print_info().
Should you also document the meaning of the indent argument ?
> + */
> + void (*gem_print_info)(struct drm_printer *p, unsigned int indent,
> + const struct drm_gem_object *obj);
> +
> /**
> * @gem_create_object: constructor for gem objects
> *
With all this fixed,
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
--
Regards,
Laurent Pinchart
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