Bigger kernel message buffer

If you wish to increase the size of the buffer displayed by dmesg, then change the LOG_BUF_LEN macro at the top of linux/kernel/printk.c, recompile your kernel, and pass the LOG_BUF_LEN value to dmesg. Sample command line with LOG_BUF_LEN == 32768:

	dmesg -s 32768 > /tmp/dmesg-output.txt