Hi J, J wrote: > Does anyone know of a way, or have a recipe, to do a linux printk > equivalent in Python? > > I've been googling for a while and not finding anything useful. > > The nutshell version of this is that I need to write a routine for a > test tool I'm working on that will time the amount of time used to > take a system and go from Live to Suspended and then from Suspended to > Live. > > I can get all the times I need from the kernel message buffer (via > dmesg) but one of the test cases involves doing 30 suspend/resume > cycles, so I'll end up having to parse and weed out a lot of redundant > data. > > One idea I had was to just flush the buffer (calling dmesg -c) but > that's not the nicest way of doing things on an end user's system. > > SO, the thought I had was to just inject a marker like "START SUSPEND > TEST hash" where hash is a unique identifier for that test run, either > the number of the run (1 - 30) or a timestamp or whatever... it just > has to be unique > and then inject a "FINISHED SUSPEND TEST has" marker after the system > is fully live.
I'm rephrasing your question: You would like to perform printk from user space. I think this is not really intended. You could write a small linux kernel module relaying user space messages to the dmesg buffer. Just look at http://serverfault.com/questions/140354/how-to-add-message-that-will-be-read-with-dmesg to get some ideas and continue googling for |"printk" and "user space". -- http://mail.python.org/mailman/listinfo/python-list
