Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\trace\trace_syscalls.c Create Date:2022-07-28 12:22:24
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:init_ftrace_syscalls

Proto:void __init init_ftrace_syscalls(void)

Type:void

Parameter:Nothing

546  If Not IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',* 0 otherwise.(CONFIG_HAVE_SPARSE_SYSCALL_NR) Then
547  syscalls_metadata = kcalloc - allocate memory for an array. The memory is set to zero.*@n: number of elements.*@size: element size.*@flags: the type of memory to allocate (see kmalloc).
550  If Not syscalls_metadata Then
551  WARN_ON(1)
552  Return
556  When i < NR_syscalls cycle
557  addr = arch_syscall_addr(i)
558  meta = find_syscall_meta(addr)
559  If Not meta Then Continue
562  syscall_nr = i
564  If Not IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',* 0 otherwise.(CONFIG_HAVE_SPARSE_SYSCALL_NR) Then
565  syscalls_metadata[i] = meta
566  Else
567  ret = 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")