/* SPDX-License-Identifier: GPL-2.0 OR MIT */
/*
* Copyright 2020 Advanced Micro Devices , Inc .
*
* 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 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
* THE COPYRIGHT HOLDER ( S ) OR AUTHOR ( S ) 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 .
*
* Authors : Christian K ö nig
*/
#ifndef _TTM_PAGE_POOL_H_
#define _TTM_PAGE_POOL_H_
#include <linux/mmzone.h>
#include <linux/llist.h>
#include <linux/spinlock.h>
#include <drm/ttm/ttm_caching.h>
struct device;
struct seq_file;
struct ttm_backup_flags;
struct ttm_operation_ctx;
struct ttm_pool;
struct ttm_tt;
/**
* struct ttm_pool_type - Pool for a certain memory type
*
* @ pool : the pool we belong to , might be NULL for the global ones
* @ order : the allocation order our pages have
* @ caching : the caching type our pages have
* @ shrinker_list : our place on the global shrinker list
* @ lock : protection of the page list
* @ pages : the list of pages in the pool
*/
struct ttm_pool_type {
struct ttm_pool *pool;
unsigned int order;
enum ttm_caching caching;
struct list_head shrinker_list;
spinlock_t lock;
struct list_head pages;
};
/**
* struct ttm_pool - Pool for all caching and orders
*
* @ dev : the device we allocate pages for
* @ nid : which numa node to use
* @ use_dma_alloc : if coherent DMA allocations should be used
* @ use_dma32 : if GFP_DMA32 should be used
* @ caching : pools for each caching / order
*/
struct ttm_pool {
struct device *dev;
int nid;
bool use_dma_alloc;
bool use_dma32;
struct {
struct ttm_pool_type orders[NR_PAGE_ORDERS];
} caching[TTM_NUM_CACHING_TYPES];
};
int ttm_pool_alloc(struct ttm_pool *pool, struct ttm_tt *tt,
struct ttm_operation_ctx *ctx);
void ttm_pool_free(struct ttm_pool *pool, struct ttm_tt *tt);
void ttm_pool_init(struct ttm_pool *pool, struct device *dev,
int nid, bool use_dma_alloc, bool use_dma32);
void ttm_pool_fini(struct ttm_pool *pool);
int ttm_pool_debugfs(struct ttm_pool *pool, struct seq_file *m);
void ttm_pool_drop_backed_up(struct ttm_tt *tt);
long ttm_pool_backup(struct ttm_pool *pool, struct ttm_tt *ttm,
const struct ttm_backup_flags *flags);
int ttm_pool_restore_and_alloc(struct ttm_pool *pool, struct ttm_tt *tt,
const struct ttm_operation_ctx *ctx);
int ttm_pool_mgr_init(unsigned long num_pages);
void ttm_pool_mgr_fini(void );
#endif
Messung V0.5 in Prozent C=97 H=100 G=98
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-09-28)
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