pseudo_lock_measure_trigger

Name:pseudo_lock_measure_trigger

Proto:static ssize_t pseudo_lock_measure_trigger(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos)

Type:ssize_t

Parameter:

Type	Parameter	Name
struct file *	file
const char __user *	user_buf
size_t	count
loff_t *	ppos

1222

rdtgrp = needed for tty driver, and maybe others

1228

buf_size = min - return minimum of two values of the same or compatible types*@x: first value*@y: second value(count, ( size of buf - 1))

1229

If copy_from_user(buf, user_buf, buf_size) Then Return -EFAULT

1232

buf[buf_size] = '\0'

1233

ret = kstrtoint - convert a string to an int*@s: The start of the string. The string must be null-terminated, and may also* include a single newline before its terminating null. The first character* may also be a plus sign or a minus sign.

1234

If ret == 0 Then

1235

If sel != 1 && sel != 2 && sel != 3 Then Return -EINVAL

1237

ret = debugfs_file_get(dentry)

1238

If ret Then Return ret

1240

ret = pseudo_lock_measure_cycles - Trigger latency measure to pseudo-locked region* The measurement of latency to access a pseudo-locked region should be* done from a cpu that is associated with that pseudo-locked region

1241

If ret == 0 Then ret = count

1243

debugfs_file_put(dentry)

1246

Return ret

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