lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

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

Browse Source 
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: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2009-08-26 13:13:37 +10:00
parent 3420e74262
commit fa8a123855
3 changed files with 81 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/gpu/drm/drm_mm.c
View File

@ -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