debug_kmalloc

函数名称：debug_kmalloc

函数原型：void *debug_kmalloc(size_t size, gfp_t flags)

返回类型：void

参数：

类型	参数	名称
size_t	size
gfp_t	flags

749

void * p = NULL

750

如果非get_dap_lock()则

751

__release(Locking is awkward. The debug code is called from all contexts,* including non maskable interrupts. A normal spinlock is not safe* in NMI context. Try to get the debug allocator lock, if it cannot* be obtained after a second then give up)

752

返回:NULL

754

h等于debug_alloc_pool加dah_first

755

如果dah_first_call则

756

size等于debug_alloc_pool_aligned的长度减dah_overhead

757

dah_first_call等于0

759

size等于@a is a power of 2 value (size, The memory returned by this allocator must be aligned, which means* so must the header size)

760

prev = best = bestprev = NULL

761

当1循环

762

如果size大于等于size且非best或size小于size的值则

763

best等于h

764

bestprev等于prev

765

如果size恒等于size则退出

768

如果非ffset of next header from start of pool 则退出

770

prev等于h

771

h等于debug_alloc_pool加ffset of next header from start of pool

773

如果非best则转到:out

775

rem等于size减size

777

如果ffset of next header from start of pool 恒等于0且bestprev恒等于NULL且rem小于dah_overhead则转到:out

779

如果rem大于等于dah_overhead则

780

size等于size

781

h_offset等于best减debug_alloc_pool加dah_overhead加size

783

h等于debug_alloc_pool加h_offset

784

size等于rem减dah_overhead

785

ffset of next header from start of pool 等于ffset of next header from start of pool

786

否则h_offset等于ffset of next header from start of pool

788

caller等于__builtin_return_address(0)

789

dah_used加等于size

790

dah_used_max等于两数取大(dah_used, dah_used_max)

791

如果bestprev则ffset of next header from start of pool 等于h_offset

793

否则dah_first等于h_offset

795

p等于best加dah_overhead

796

memset(p, r use-uninitialised poisoning , size - 1)

797

*p加size减1的差等于d-byte of poisoning

798

out :

799

自旋锁解锁

800

返回:p

**调用者**
名称	描述
kdbnearsym	kdbnearsym - Return the name of the symbol with the nearest address* less than 'addr'

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码

函数逻辑报告