From: Jerome Glisse jglisse@redhat.com
This is to allow debugging of userspace program not freeing buffer after, which is basicly a memory leak. This print the list of all gem object along with their size and placement (VRAM,GTT,CPU) and with the pid of the task that created them.
Signed-off-by: Jerome Glisse jglisse@redhat.com --- drivers/gpu/drm/radeon/radeon.h | 5 +++- drivers/gpu/drm/radeon/radeon_device.c | 5 ++++ drivers/gpu/drm/radeon/radeon_gem.c | 50 ++++++++++++++++++++++++++++++++++ 3 files changed, 59 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index 18904fb..bd28ee6 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -358,7 +358,8 @@ struct radeon_bo { struct radeon_device *rdev; struct drm_gem_object gem_base;
- struct ttm_bo_kmap_obj dma_buf_vmap; + struct ttm_bo_kmap_obj dma_buf_vmap; + pid_t pid; }; #define gem_to_radeon_bo(gobj) container_of((gobj), struct radeon_bo, gem_base)
@@ -372,6 +373,8 @@ struct radeon_bo_list { u32 tiling_flags; };
+int radeon_gem_debugfs_init(struct radeon_device *rdev); + /* sub-allocation manager, it has to be protected by another lock. * By conception this is an helper for other part of the driver * like the indirect buffer or semaphore, which both have their diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index 62d0ba3..76166ae 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -1142,6 +1142,11 @@ int radeon_device_init(struct radeon_device *rdev, if (r) DRM_ERROR("ib ring test failed (%d).\n", r);
+ r = radeon_gem_debugfs_init(rdev); + if (r) { + DRM_ERROR("registering gem debugfs failed (%d).\n", r); + } + if (rdev->flags & RADEON_IS_AGP && !rdev->accel_working) { /* Acceleration not working on AGP card try again * with fallback to PCI or PCIE GART diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c index fe5c1f6..87f8c52 100644 --- a/drivers/gpu/drm/radeon/radeon_gem.c +++ b/drivers/gpu/drm/radeon/radeon_gem.c @@ -84,6 +84,7 @@ retry: return r; } *obj = &robj->gem_base; + robj->pid = task_pid_nr(current);
mutex_lock(&rdev->gem.mutex); list_add_tail(&robj->list, &rdev->gem.objects); @@ -575,3 +576,52 @@ int radeon_mode_dumb_destroy(struct drm_file *file_priv, { return drm_gem_handle_delete(file_priv, handle); } + +#if defined(CONFIG_DEBUG_FS) +static int radeon_debugfs_gem_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 radeon_device *rdev = dev->dev_private; + struct radeon_bo *rbo; + unsigned i = 0; + + mutex_lock(&rdev->gem.mutex); + list_for_each_entry(rbo, &rdev->gem.objects, list) { + unsigned domain; + const char *placement; + + domain = radeon_mem_type_to_domain(rbo->tbo.mem.mem_type); + switch (domain) { + case RADEON_GEM_DOMAIN_VRAM: + placement = "VRAM"; + break; + case RADEON_GEM_DOMAIN_GTT: + placement = " GTT"; + break; + case RADEON_GEM_DOMAIN_CPU: + default: + placement = " CPU"; + break; + } + seq_printf(m, "bo[0x%08x] %8dkB %8dMB %s pid %8ld\n", + i, radeon_bo_size(rbo) >> 10, radeon_bo_size(rbo) >> 20, + placement, (unsigned long)rbo->pid); + i++; + } + mutex_unlock(&rdev->gem.mutex); + return 0; +} + +static struct drm_info_list radeon_debugfs_gem_list[] = { + {"radeon_gem_info", &radeon_debugfs_gem_info, 0, NULL}, +}; +#endif + +int radeon_gem_debugfs_init(struct radeon_device *rdev) +{ +#if defined(CONFIG_DEBUG_FS) + return radeon_debugfs_add_files(rdev, radeon_debugfs_gem_list, 1); +#endif + return 0; +}