diff options
Diffstat (limited to 'include/drm/drm_memory_debug.h')
| -rw-r--r-- | include/drm/drm_memory_debug.h | 309 |
1 files changed, 309 insertions, 0 deletions
diff --git a/include/drm/drm_memory_debug.h b/include/drm/drm_memory_debug.h new file mode 100644 index 000000000000..6463271deea8 --- /dev/null +++ b/include/drm/drm_memory_debug.h @@ -0,0 +1,309 @@ +/** + * \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 |