mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 10:49:33 +00:00
![Christoph Hellwig](/assets/img/avatar_default.png)
hch originally submitted this for paravirt ops work, airlied took it and cleaned up a lot of unused code caused by using this. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Airlie <airlied@linux.ie>
309 lines
8.2 KiB
C
309 lines
8.2 KiB
C
/**
|
|
* \file drm_memory_debug.h
|
|
* Memory management wrappers for DRM.
|
|
*
|
|
* \author Rickard E. (Rik) Faith <faith@valinux.com>
|
|
* \author Gareth Hughes <gareth@valinux.com>
|
|
*/
|
|
|
|
/*
|
|
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
|
|
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
|
|
* All Rights Reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
|
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#include "drmP.h"
|
|
|
|
typedef struct drm_mem_stats {
|
|
const char *name;
|
|
int succeed_count;
|
|
int free_count;
|
|
int fail_count;
|
|
unsigned long bytes_allocated;
|
|
unsigned long bytes_freed;
|
|
} drm_mem_stats_t;
|
|
|
|
static DEFINE_SPINLOCK(drm_mem_lock);
|
|
static unsigned long drm_ram_available = 0; /* In pages */
|
|
static unsigned long drm_ram_used = 0;
|
|
static drm_mem_stats_t drm_mem_stats[] =
|
|
{
|
|
[DRM_MEM_DMA] = {"dmabufs"},
|
|
[DRM_MEM_SAREA] = {"sareas"},
|
|
[DRM_MEM_DRIVER] = {"driver"},
|
|
[DRM_MEM_MAGIC] = {"magic"},
|
|
[DRM_MEM_IOCTLS] = {"ioctltab"},
|
|
[DRM_MEM_MAPS] = {"maplist"},
|
|
[DRM_MEM_VMAS] = {"vmalist"},
|
|
[DRM_MEM_BUFS] = {"buflist"},
|
|
[DRM_MEM_SEGS] = {"seglist"},
|
|
[DRM_MEM_PAGES] = {"pagelist"},
|
|
[DRM_MEM_FILES] = {"files"},
|
|
[DRM_MEM_QUEUES] = {"queues"},
|
|
[DRM_MEM_CMDS] = {"commands"},
|
|
[DRM_MEM_MAPPINGS] = {"mappings"},
|
|
[DRM_MEM_BUFLISTS] = {"buflists"},
|
|
[DRM_MEM_AGPLISTS] = {"agplist"},
|
|
[DRM_MEM_SGLISTS] = {"sglist"},
|
|
[DRM_MEM_TOTALAGP] = {"totalagp"},
|
|
[DRM_MEM_BOUNDAGP] = {"boundagp"},
|
|
[DRM_MEM_CTXBITMAP] = {"ctxbitmap"},
|
|
[DRM_MEM_CTXLIST] = {"ctxlist"},
|
|
[DRM_MEM_STUB] = {"stub"},
|
|
{NULL, 0,} /* Last entry must be null */
|
|
};
|
|
|
|
void drm_mem_init (void) {
|
|
drm_mem_stats_t *mem;
|
|
struct sysinfo si;
|
|
|
|
for (mem = drm_mem_stats; mem->name; ++mem) {
|
|
mem->succeed_count = 0;
|
|
mem->free_count = 0;
|
|
mem->fail_count = 0;
|
|
mem->bytes_allocated = 0;
|
|
mem->bytes_freed = 0;
|
|
}
|
|
|
|
si_meminfo(&si);
|
|
drm_ram_available = si.totalram;
|
|
drm_ram_used = 0;
|
|
}
|
|
|
|
/* drm_mem_info is called whenever a process reads /dev/drm/mem. */
|
|
|
|
static int drm__mem_info (char *buf, char **start, off_t offset,
|
|
int request, int *eof, void *data) {
|
|
drm_mem_stats_t *pt;
|
|
int len = 0;
|
|
|
|
if (offset > DRM_PROC_LIMIT) {
|
|
*eof = 1;
|
|
return 0;
|
|
}
|
|
|
|
*eof = 0;
|
|
*start = &buf[offset];
|
|
|
|
DRM_PROC_PRINT(" total counts "
|
|
" | outstanding \n");
|
|
DRM_PROC_PRINT("type alloc freed fail bytes freed"
|
|
" | allocs bytes\n\n");
|
|
DRM_PROC_PRINT("%-9.9s %5d %5d %4d %10lu kB |\n",
|
|
"system", 0, 0, 0,
|
|
drm_ram_available << (PAGE_SHIFT - 10));
|
|
DRM_PROC_PRINT("%-9.9s %5d %5d %4d %10lu kB |\n",
|
|
"locked", 0, 0, 0, drm_ram_used >> 10);
|
|
DRM_PROC_PRINT("\n");
|
|
for (pt = drm_mem_stats; pt->name; pt++) {
|
|
DRM_PROC_PRINT("%-9.9s %5d %5d %4d %10lu %10lu | %6d %10ld\n",
|
|
pt->name,
|
|
pt->succeed_count,
|
|
pt->free_count,
|
|
pt->fail_count,
|
|
pt->bytes_allocated,
|
|
pt->bytes_freed,
|
|
pt->succeed_count - pt->free_count,
|
|
(long)pt->bytes_allocated
|
|
- (long)pt->bytes_freed);
|
|
}
|
|
|
|
if (len > request + offset)
|
|
return request;
|
|
*eof = 1;
|
|
return len - offset;
|
|
}
|
|
|
|
int drm_mem_info (char *buf, char **start, off_t offset,
|
|
int len, int *eof, void *data) {
|
|
int ret;
|
|
|
|
spin_lock(&drm_mem_lock);
|
|
ret = drm__mem_info (buf, start, offset, len, eof, data);
|
|
spin_unlock(&drm_mem_lock);
|
|
return ret;
|
|
}
|
|
|
|
void *drm_alloc (size_t size, int area) {
|
|
void *pt;
|
|
|
|
if (!size) {
|
|
DRM_MEM_ERROR(area, "Allocating 0 bytes\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (!(pt = kmalloc(size, GFP_KERNEL))) {
|
|
spin_lock(&drm_mem_lock);
|
|
++drm_mem_stats[area].fail_count;
|
|
spin_unlock(&drm_mem_lock);
|
|
return NULL;
|
|
}
|
|
spin_lock(&drm_mem_lock);
|
|
++drm_mem_stats[area].succeed_count;
|
|
drm_mem_stats[area].bytes_allocated += size;
|
|
spin_unlock(&drm_mem_lock);
|
|
return pt;
|
|
}
|
|
|
|
void *drm_calloc (size_t nmemb, size_t size, int area) {
|
|
void *addr;
|
|
|
|
addr = drm_alloc (nmemb * size, area);
|
|
if (addr != NULL)
|
|
memset((void *)addr, 0, size * nmemb);
|
|
|
|
return addr;
|
|
}
|
|
|
|
void *drm_realloc (void *oldpt, size_t oldsize, size_t size, int area) {
|
|
void *pt;
|
|
|
|
if (!(pt = drm_alloc (size, area)))
|
|
return NULL;
|
|
if (oldpt && oldsize) {
|
|
memcpy(pt, oldpt, oldsize);
|
|
drm_free (oldpt, oldsize, area);
|
|
}
|
|
return pt;
|
|
}
|
|
|
|
void drm_free (void *pt, size_t size, int area) {
|
|
int alloc_count;
|
|
int free_count;
|
|
|
|
if (!pt)
|
|
DRM_MEM_ERROR(area, "Attempt to free NULL pointer\n");
|
|
else
|
|
kfree(pt);
|
|
spin_lock(&drm_mem_lock);
|
|
drm_mem_stats[area].bytes_freed += size;
|
|
free_count = ++drm_mem_stats[area].free_count;
|
|
alloc_count = drm_mem_stats[area].succeed_count;
|
|
spin_unlock(&drm_mem_lock);
|
|
if (free_count > alloc_count) {
|
|
DRM_MEM_ERROR(area, "Excess frees: %d frees, %d allocs\n",
|
|
free_count, alloc_count);
|
|
}
|
|
}
|
|
|
|
#if __OS_HAS_AGP
|
|
|
|
DRM_AGP_MEM *drm_alloc_agp (drm_device_t *dev, int pages, u32 type) {
|
|
DRM_AGP_MEM *handle;
|
|
|
|
if (!pages) {
|
|
DRM_MEM_ERROR(DRM_MEM_TOTALAGP, "Allocating 0 pages\n");
|
|
return NULL;
|
|
}
|
|
|
|
if ((handle = drm_agp_allocate_memory (pages, type))) {
|
|
spin_lock(&drm_mem_lock);
|
|
++drm_mem_stats[DRM_MEM_TOTALAGP].succeed_count;
|
|
drm_mem_stats[DRM_MEM_TOTALAGP].bytes_allocated
|
|
+= pages << PAGE_SHIFT;
|
|
spin_unlock(&drm_mem_lock);
|
|
return handle;
|
|
}
|
|
spin_lock(&drm_mem_lock);
|
|
++drm_mem_stats[DRM_MEM_TOTALAGP].fail_count;
|
|
spin_unlock(&drm_mem_lock);
|
|
return NULL;
|
|
}
|
|
|
|
int drm_free_agp (DRM_AGP_MEM * handle, int pages) {
|
|
int alloc_count;
|
|
int free_count;
|
|
int retval = -EINVAL;
|
|
|
|
if (!handle) {
|
|
DRM_MEM_ERROR(DRM_MEM_TOTALAGP,
|
|
"Attempt to free NULL AGP handle\n");
|
|
return retval;
|
|
}
|
|
|
|
if (drm_agp_free_memory (handle)) {
|
|
spin_lock(&drm_mem_lock);
|
|
free_count = ++drm_mem_stats[DRM_MEM_TOTALAGP].free_count;
|
|
alloc_count = drm_mem_stats[DRM_MEM_TOTALAGP].succeed_count;
|
|
drm_mem_stats[DRM_MEM_TOTALAGP].bytes_freed
|
|
+= pages << PAGE_SHIFT;
|
|
spin_unlock(&drm_mem_lock);
|
|
if (free_count > alloc_count) {
|
|
DRM_MEM_ERROR(DRM_MEM_TOTALAGP,
|
|
"Excess frees: %d frees, %d allocs\n",
|
|
free_count, alloc_count);
|
|
}
|
|
return 0;
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
int drm_bind_agp (DRM_AGP_MEM * handle, unsigned int start) {
|
|
int retcode = -EINVAL;
|
|
|
|
if (!handle) {
|
|
DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
|
|
"Attempt to bind NULL AGP handle\n");
|
|
return retcode;
|
|
}
|
|
|
|
if (!(retcode = drm_agp_bind_memory (handle, start))) {
|
|
spin_lock(&drm_mem_lock);
|
|
++drm_mem_stats[DRM_MEM_BOUNDAGP].succeed_count;
|
|
drm_mem_stats[DRM_MEM_BOUNDAGP].bytes_allocated
|
|
+= handle->page_count << PAGE_SHIFT;
|
|
spin_unlock(&drm_mem_lock);
|
|
return retcode;
|
|
}
|
|
spin_lock(&drm_mem_lock);
|
|
++drm_mem_stats[DRM_MEM_BOUNDAGP].fail_count;
|
|
spin_unlock(&drm_mem_lock);
|
|
return retcode;
|
|
}
|
|
|
|
int drm_unbind_agp (DRM_AGP_MEM * handle) {
|
|
int alloc_count;
|
|
int free_count;
|
|
int retcode = -EINVAL;
|
|
|
|
if (!handle) {
|
|
DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
|
|
"Attempt to unbind NULL AGP handle\n");
|
|
return retcode;
|
|
}
|
|
|
|
if ((retcode = drm_agp_unbind_memory (handle)))
|
|
return retcode;
|
|
spin_lock(&drm_mem_lock);
|
|
free_count = ++drm_mem_stats[DRM_MEM_BOUNDAGP].free_count;
|
|
alloc_count = drm_mem_stats[DRM_MEM_BOUNDAGP].succeed_count;
|
|
drm_mem_stats[DRM_MEM_BOUNDAGP].bytes_freed
|
|
+= handle->page_count << PAGE_SHIFT;
|
|
spin_unlock(&drm_mem_lock);
|
|
if (free_count > alloc_count) {
|
|
DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
|
|
"Excess frees: %d frees, %d allocs\n",
|
|
free_count, alloc_count);
|
|
}
|
|
return retcode;
|
|
}
|
|
#endif
|