Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\trace\trace_events.c Create Date:2022-07-28 12:19:41
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:event_id_read

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

Type:ssize_t

Parameter:

TypeParameterName
struct file *filp
char __user *ubuf
size_tcnt
loff_t *ppos
1340  id = event_file_data(filp)
1344  If Value for the false possibility is greater at compile time(!id) Then Return -ENODEV
1347  len = sprintf(buf, "%d\n", id)
1349  Return simple_read_from_buffer(ubuf, cnt, ppos, buf, len)