What Kernel Ring Buffer Contains?

[Nishant Desai]

Dear All,
Currently I am studying about Kernel Space drivers and there i have came across the term Kernel Ring Buffer, 'dmesg' command either control or print the Kernel Ring Buffer, so i want to know that what exactly the Kernel Ring Buffer contains? what are the contents inside the Kernel Ring Buffer?

Thanks,
Nishant

[fernape]

what are the contents inside the Kernel Ring Buffer?

AFAIK It is a log buffer. It contains messages from the kernel, from modules, etc.

Best Regards

[Nishant Desai]

AFAIK It is a log buffer. It contains messages from the kernel, from modules, etc.

Best Regards

Dear fernape,
Thanks for the info dude, i want to know that this messaes are of which type? are they about the devices or notifications or modules of the kernel?, basically which kind of messages are they?

Thanks,
Nishant

[fernape]

Basically they are debuggin messages. For example when a new filesystem is registered in the kernel due to a module loading. Sometimes it provides non-severe errors messages like an Oops. That kind of things.

Also if you write a kernel module and use the printk function your message will be displayed with dmesg.

Best Regards

[Nishant Desai]

Basically they are debuggin messages. For example when a new filesystem is registered in the kernel due to a module loading. Sometimes it provides non-severe errors messages like an Oops. That kind of things.

Also if you write a kernel module and use the printk function your message will be displayed with dmesg.

Best Regards

Hey Dude,

Thanks for the info man, that is what i was looking for that which kind of messages this command generates...

Thanks,
Nishant