pr_cont("\n") tests

gistfile1.txt

[dima@Mindolluin linux-loglevel]$ cat lib/test_pr_cont.c
// SPDX-License-Identifier: GPL-2.0-only
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/printk.h>

static int __init pr_cont_tests(void)
{
	pr_info("pr_cont() tests:\n");

	pr_info("1 hello");
	pr_cont("\n");
	pr_cont(" world\n");

	pr_info("2 hel");
	pr_cont("lo");
	pr_cont("\n");
	pr_cont(" world\n");

	pr_info("3 hello");
	pr_cont(" world\n");

	pr_info("4 hello");
	pr_cont("\n");
	pr_info(" world\n");

	pr_info("5 hello");
	pr_info(" world\n");

	return -EAGAIN;
}

module_init(pr_cont_tests);
MODULE_LICENSE("GPL");
[root@localhost ~]# dmesg | grep 'pr_cont() tests' -A 10
[    0.801262] pr_cont() tests:
[    0.801642] 1 hello
[    0.801926]  world
[    0.802212] 2 hello
[    0.802529]  world
[    0.802805] 3 hello world
[    0.803178] 4 hello
[    0.803466]  world
[    0.803742] 5 hello
[    0.803742]  world
[    0.806767] pcieport 0000:00:02.0: PME: Signaling with IRQ 24