linux-imx

/* binder_alloc.c

 *

 * Android IPC Subsystem

 *

 * Copyright (C) 2007-2017 Google, Inc.

 *

 * This software is licensed under the terms of the GNU General Public

 * License version 2, as published by the Free Software Foundation, and

 * may be copied, distributed, and modified under those terms.

 *

 * 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.

 *

 */

​

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

​

#include <linux/list.h>

#include <linux/sched/mm.h>

#include <linux/module.h>

#include <linux/rtmutex.h>

#include <linux/rbtree.h>

#include <linux/seq_file.h>

#include <linux/vmalloc.h>

#include <linux/slab.h>

#include <linux/sched.h>

#include <linux/list_lru.h>

#include <linux/ratelimit.h>

#include <asm/cacheflush.h>

#include <linux/uaccess.h>

#include <linux/highmem.h>

#include "binder_alloc.h"

#include "binder_trace.h"

​

struct list_lru binder_alloc_lru;

​

static DEFINE_MUTEX(binder_alloc_mmap_lock);

​

enum {

    BINDER_DEBUG_USER_ERROR             = 1U << 0,

    BINDER_DEBUG_OPEN_CLOSE             = 1U << 1,

    BINDER_DEBUG_BUFFER_ALLOC           = 1U << 2,

    BINDER_DEBUG_BUFFER_ALLOC_ASYNC     = 1U << 3,

};

static uint32_t binder_alloc_debug_mask = BINDER_DEBUG_USER_ERROR;

​

module_param_named(debug_mask, binder_alloc_debug_mask,

           uint, 0644);

​

#define binder_alloc_debug(mask, x...) \

    do { \

        if (binder_alloc_debug_mask & mask) \

            pr_info_ratelimited(x); \

    } while (0)

​

static struct binder_buffer *binder_buffer_next(struct binder_buffer *buffer)

{

    return list_entry(buffer->entry.next, struct binder_buffer, entry);

}

​

static struct binder_buffer *binder_buffer_prev(struct binder_buffer *buffer)