how to test kernel modules using gprof

laginagesh · 06-10-2010, 01:04 AM

hi,

how to use gprof to generate report on kernel module.
i did using gcov and it is giving % of line executed and now i want to know time ticks taken by each individual function in kernel modules.
Please explain the steps, how to use gprof for kernel modules.

cheers
Nagesh

paulsm4 · 06-10-2010, 06:26 PM

Hi -

AFAIK, "gprof" can only be used with user-space processes - *not* kernel-space modules.

Try Googling for "linux profile kernel module". You should find several hits, including some good "howto's" on kernel profiling.

'Hope that helps .. PSM