Messages in this thread | | | Date | Mon, 22 Sep 2008 11:11:13 -0400 | From | George Nychis <> | Subject | Re: printing current system time from kernel space |
| |
Sitsofe Wheeler wrote: > George Nychis wrote: >> I spent some time googling, but could not find out how or if it is >> possible to read the current system time in kernel space. I could >> insert a printk() somewhere in usbdev_read() then. > > If that's what you want to do could you not turn on timestamps on printk > (CONFIG_PRINTK_TIME in the kernel hacking menu)? >
Thanks for the response!
You might be misunderstanding my goal. I need a common clock between kernel and user space, so that I can say:
Event1 happened at time X in the kernel Event2 happened at time X+Y in user space The time between Event1 and Event2 was Y-X
So, turning off timestamps does not help anything here :)
What might be useful is if user space can read the current timestamp value that printk uses, that way I can just do a printk in the kernel and then read the value and print in user space.
Is this possible?
Thanks! George
| |