83 lines
1.9 KiB
C
83 lines
1.9 KiB
C
/*
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* Copyright (c) Hisilicon Technologies Co., Ltd. 2020-2020. All rights reserved.
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* Description: oal_mm.h 的头文件
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* Author: Hisilicon
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* Create: 2020-09-03
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*/
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#ifndef __OAL_MM_H__
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#define __OAL_MM_H__
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/* 头文件包含 */
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#include <linux/slab.h>
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#include <linux/hardirq.h>
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#include <linux/vmalloc.h>
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#include "hi_types_base.h"
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#ifdef __cplusplus
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#if __cplusplus
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extern "C" {
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#endif
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#endif
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/* 宏定义 */
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#define OAL_GFP_KERNEL GFP_KERNEL
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#define OAL_GFP_ATOMIC GFP_ATOMIC
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/* inline 函数声明 */
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/*****************************************************************************
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功能描述 : 申请核心态的内存空间，并填充0。对于Linux操作系统而言，
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需要考虑中断上下文和内核上下文的不同情况(GFP_KERNEL和GFP_ATOMIC)。
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输入参数 : ul_size: alloc mem size
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返 回 值 : alloc mem addr
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*****************************************************************************/
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static inline hi_void* oal_memalloc(hi_u32 ul_size)
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{
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hi_s32 l_flags = GFP_KERNEL;
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hi_void *puc_mem_space = HI_NULL;
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/* 不睡眠或在中断程序中标志置为GFP_ATOMIC */
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if (in_interrupt() || irqs_disabled()) {
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l_flags = GFP_ATOMIC;
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}
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puc_mem_space = kmalloc(ul_size, l_flags);
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if (puc_mem_space == HI_NULL) {
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return HI_NULL;
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}
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return puc_mem_space;
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}
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static inline hi_void* oal_kzalloc(hi_u32 ul_size, hi_s32 l_flags)
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{
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return kzalloc(ul_size, l_flags);
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}
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static inline hi_void* oal_vmalloc(hi_u32 ul_size)
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{
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return vmalloc(ul_size);
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}
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/*****************************************************************************
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功能描述 : 释放核心态的内存空间。
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*****************************************************************************/
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static inline hi_void oal_free(const hi_void *p_buf)
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{
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kfree(p_buf);
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}
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static inline hi_void oal_vfree(hi_void *p_buf)
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{
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vfree(p_buf);
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}
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#ifdef __cplusplus
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#if __cplusplus
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}
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#endif
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#endif
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#endif /* end of oal_mm.h */
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