pr_info not printing message in /var/log/messages

I was looking at http://stackoverflow.com/questions/8090944/printk-not-working-for-kernel-deb... Initially it was - # cat /proc/sys/kernel/printk 7 4 1 7 Then i did - # echo "7 7" > /proc/sys/kernel/printk # cat /proc/sys/kernel/printk 7 7 1 7 # sysctl -a | grep printk kernel.printk = 7 7 1 7 kernel.printk_delay = 0 kernel.printk_ratelimit = 5 kernel.printk_ratelimit_burst = 10 still I the pr_info ("hello, world"); message doesn't get printed to /var/log/messages. please give me some hints as to resolve this issue. -- Shraddha