Commit fa8a1238 authored by Dave Airlie's avatar Dave Airlie
Browse files

drm/mm: add ability to dump mm lists via debugfs



This adds code to the drm_mm to talk to debugfs, and adds
support to radeon to add the VRAM and GTT mm lists to debugfs.

I tested with spinlock debugging and it doesn't give out.
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 3420e742
......@@ -44,6 +44,7 @@
#include "drmP.h"
#include "drm_mm.h"
#include <linux/slab.h>
#include <linux/seq_file.h>
#define MM_UNUSED_TARGET 4
......@@ -370,3 +371,23 @@ void drm_mm_takedown(struct drm_mm * mm)
BUG_ON(mm->num_unused != 0);
}
EXPORT_SYMBOL(drm_mm_takedown);
#if defined(CONFIG_DEBUG_FS)
int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm)
{
struct drm_mm_node *entry;
int total_used = 0, total_free = 0, total = 0;
list_for_each_entry(entry, &mm->ml_entry, ml_entry) {
seq_printf(m, "0x%08lx-0x%08lx: 0x%08lx: %s\n", entry->start, entry->start + entry->size, entry->size, entry->free ? "free" : "used");
total += entry->size;
if (entry->free)
total_free += entry->size;
else
total_used += entry->size;
}
seq_printf(m, "total: %d, used %d free %d\n", total, total_free, total_used);
return 0;
}
EXPORT_SYMBOL(drm_mm_dump_table);
#endif
......@@ -35,11 +35,14 @@
#include <ttm/ttm_module.h>
#include <drm/drmP.h>
#include <drm/radeon_drm.h>
#include <linux/seq_file.h>
#include "radeon_reg.h"
#include "radeon.h"
#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
static int radeon_ttm_debugfs_init(struct radeon_device *rdev);
static struct radeon_device *radeon_get_rdev(struct ttm_bo_device *bdev)
{
struct radeon_mman *mman;
......@@ -504,6 +507,12 @@ int radeon_ttm_init(struct radeon_device *rdev)
if (unlikely(rdev->mman.bdev.dev_mapping == NULL)) {
rdev->mman.bdev.dev_mapping = rdev->ddev->dev_mapping;
}
r = radeon_ttm_debugfs_init(rdev);
if (r) {
DRM_ERROR("Failed to init debugfs\n");
return r;
}
return 0;
}
......@@ -678,3 +687,50 @@ struct ttm_backend *radeon_ttm_backend_create(struct radeon_device *rdev)
gtt->bound = false;
return &gtt->backend;
}
#define RADEON_DEBUGFS_MEM_TYPES 2
static struct drm_info_list radeon_mem_types_list[RADEON_DEBUGFS_MEM_TYPES];
static char radeon_mem_types_names[RADEON_DEBUGFS_MEM_TYPES][32];
#if defined(CONFIG_DEBUG_FS)
static int radeon_mm_dump_table(struct seq_file *m, void *data)
{
struct drm_info_node *node = (struct drm_info_node *)m->private;
struct drm_mm *mm = (struct drm_mm *)node->info_ent->data;
struct drm_device *dev = node->minor->dev;
struct radeon_device *rdev = dev->dev_private;
int ret;
struct ttm_bo_global *glob = rdev->mman.bdev.glob;
spin_lock(&glob->lru_lock);
ret = drm_mm_dump_table(m, mm);
spin_unlock(&glob->lru_lock);
return ret;
}
#endif
static int radeon_ttm_debugfs_init(struct radeon_device *rdev)
{
unsigned i;
#if defined(CONFIG_DEBUG_FS)
for (i = 0; i < RADEON_DEBUGFS_MEM_TYPES; i++) {
if (i == 0)
sprintf(radeon_mem_types_names[i], "radeon_vram_mm");
else
sprintf(radeon_mem_types_names[i], "radeon_gtt_mm");
radeon_mem_types_list[i].name = radeon_mem_types_names[i];
radeon_mem_types_list[i].show = &radeon_mm_dump_table;
radeon_mem_types_list[i].driver_features = 0;
if (i == 0)
radeon_mem_types_list[i].data = &rdev->mman.bdev.man[TTM_PL_VRAM].manager;
else
radeon_mem_types_list[i].data = &rdev->mman.bdev.man[TTM_PL_TT].manager;
}
return radeon_debugfs_add_files(rdev, radeon_mem_types_list, RADEON_DEBUGFS_MEM_TYPES);
#endif
return 0;
}
......@@ -96,4 +96,8 @@ static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block)
return block->mm;
}
#ifdef CONFIG_DEBUG_FS
int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm);
#endif
#endif
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