函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\trace\trace_syscalls.c Create Date:2022-07-27 13:29:39
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：init_ftrace_syscalls

函数原型：void __init init_ftrace_syscalls(void)

返回类型：void

参数：无

546  如果非IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',* 0 otherwise.(CONFIG_HAVE_SPARSE_SYSCALL_NR)则
547  syscalls_metadata等于分配数组内存并置零
550  如果非syscalls_metadata则
551  WARN_ON(1)
552  返回
556  以i小于NR_syscalls循环
557  addr等于arch_syscall_addr(i)
558  meta等于find_syscall_meta(addr)
559  如果非meta则继续下一循环
562  syscall_nr等于i
564  如果非IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',* 0 otherwise.(CONFIG_HAVE_SPARSE_SYSCALL_NR)则
565  syscalls_metadata[i]等于meta
566  否则
567  ret等于xa_store() - Store this entry in the XArray.*@xa: XArray.*@index: Index into array.*@entry: New entry.*@gfp: Memory allocation flags.* After this function returns, loads from this index will return @entry.
569  WARN(xa_is_err() - Report whether an XArray operation returned an error*@entry: Result from calling an XArray function* If an XArray operation cannot complete an operation, it will return* a special value indicating an error. This function tells you, "Syscall memory allocation failed\n")