| // SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note |
| /* |
| * |
| * (C) COPYRIGHT 2022-2023 ARM Limited. All rights reserved. |
| * |
| * This program is free software and is provided to you under the terms of the |
| * GNU General Public License version 2 as published by the Free Software |
| * Foundation, and any use by you of this program is subject to the terms |
| * of such GNU license. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, you can access it online at |
| * http://www.gnu.org/licenses/gpl-2.0.html. |
| * |
| */ |
| |
| /* |
| * Debugfs interface to dump information about GPU allocations in kctx |
| */ |
| |
| #include "mali_kbase_debug_mem_allocs.h" |
| #include "mali_kbase.h" |
| |
| #include <linux/string.h> |
| #include <linux/list.h> |
| #include <linux/file.h> |
| |
| #if IS_ENABLED(CONFIG_DEBUG_FS) |
| |
| /** |
| * debug_zone_mem_allocs_show - Show information from specific rbtree |
| * @zone: The memory zone to be displayed |
| * @sfile: The debugfs entry |
| * |
| * This function is called to show information about all the GPU allocations of a |
| * a particular zone within GPU virtual memory space of a context. |
| * The information like the start virtual address and size (in bytes) is shown for |
| * every GPU allocation mapped in the zone. |
| */ |
| static void debug_zone_mem_allocs_show(struct kbase_reg_zone *zone, struct seq_file *sfile) |
| { |
| struct rb_node *p; |
| struct rb_root *rbtree = &zone->reg_rbtree; |
| struct kbase_va_region *reg; |
| const char *type_names[5] = { |
| "Native", |
| "Imported UMM", |
| "Imported user buf", |
| "Alias", |
| "Raw" |
| }; |
| |
| #define MEM_ALLOCS_HEADER \ |
| " VA, VA size, Commit size, Flags, Mem type\n" |
| seq_printf(sfile, "Zone name: %s\n:", kbase_reg_zone_get_name(zone->id)); |
| seq_printf(sfile, MEM_ALLOCS_HEADER); |
| for (p = rb_first(rbtree); p; p = rb_next(p)) { |
| reg = rb_entry(p, struct kbase_va_region, rblink); |
| if (!(reg->flags & KBASE_REG_FREE)) { |
| seq_printf(sfile, "%16llx, %16zx, %16zx, %8lx, %s\n", |
| reg->start_pfn << PAGE_SHIFT, reg->nr_pages << PAGE_SHIFT, |
| kbase_reg_current_backed_size(reg) << PAGE_SHIFT, |
| reg->flags, type_names[reg->gpu_alloc->type]); |
| } |
| } |
| } |
| |
| /** |
| * debug_ctx_mem_allocs_show - Show information about GPU allocations in a kctx |
| * @sfile: The debugfs entry |
| * @data: Data associated with the entry |
| * |
| * Return: |
| * 0 if successfully prints data in debugfs entry file |
| * -1 if it encountered an error |
| */ |
| static int debug_ctx_mem_allocs_show(struct seq_file *sfile, void *data) |
| { |
| struct kbase_context *const kctx = sfile->private; |
| enum kbase_memory_zone zone_idx; |
| |
| kbase_gpu_vm_lock(kctx); |
| for (zone_idx = 0; zone_idx < CONTEXT_ZONE_MAX; zone_idx++) { |
| struct kbase_reg_zone *zone; |
| |
| zone = &kctx->reg_zone[zone_idx]; |
| debug_zone_mem_allocs_show(zone, sfile); |
| } |
| kbase_gpu_vm_unlock(kctx); |
| return 0; |
| } |
| |
| /* |
| * File operations related to debugfs entry for mem_zones |
| */ |
| static int debug_mem_allocs_open(struct inode *in, struct file *file) |
| { |
| return single_open(file, debug_ctx_mem_allocs_show, in->i_private); |
| } |
| |
| static const struct file_operations kbase_debug_mem_allocs_fops = { |
| .owner = THIS_MODULE, |
| .open = debug_mem_allocs_open, |
| .read = seq_read, |
| .llseek = seq_lseek, |
| .release = single_release, |
| }; |
| |
| /* |
| * Initialize debugfs entry for mem_allocs |
| */ |
| void kbase_debug_mem_allocs_init(struct kbase_context *const kctx) |
| { |
| /* Caller already ensures this, but we keep the pattern for |
| * maintenance safety. |
| */ |
| if (WARN_ON(!kctx) || WARN_ON(IS_ERR_OR_NULL(kctx->kctx_dentry))) |
| return; |
| |
| debugfs_create_file("mem_allocs", 0400, kctx->kctx_dentry, kctx, |
| &kbase_debug_mem_allocs_fops); |
| } |
| #else |
| /* |
| * Stub functions for when debugfs is disabled |
| */ |
| void kbase_debug_mem_allocs_init(struct kbase_context *const kctx) |
| { |
| } |
| #endif |