Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\trace\trace.c Create Date:2022-07-28 12:01:56
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:tracing_entries_write

Proto:static ssize_t tracing_entries_write(struct file *filp, const char __user *ubuf, size_t cnt, loff_t *ppos)

Type:ssize_t

Parameter:

TypeParameterName
struct file *filp
const char __user *ubuf
size_tcnt
loff_t *ppos
6390  inode = file_inode(filp)
6391  tr = s or device private pointer
6395  ret = kstrtoul_from_user(ubuf, cnt, 10, & val)
6396  If ret Then Return ret
6400  If Not val Then Return -EINVAL
6404  val <<= 10
6405  ret = tracing_resize_ring_buffer(tr, val, Should be used after trace_array_get(), trace_types_lock* ensures that i_cdev was already initialized.)
6406  If ret < 0 Then Return ret
6409  ppos += cnt
6411  Return cnt