Messages in this thread | | | Date | Tue, 19 Aug 2008 16:58:46 -0700 | From | Jeremy Fitzhardinge <> | Subject | Re: ftrace introduces instability into kernel 2.6.27(-rc2,-rc3) |
| |
Benjamin Herrenschmidt wrote: >> Ok, there are two cases where it's ok : >> >> 1 - in stop_machine, considering we are not touching code executed in >> NMI handlers. >> 2 - when using my replace_instruction_safe() which uses a temporary >> breakpoint when doing the instruction replacement. >> >> In those cases you could use text_poke_early(). >> > > Note that vmap/vunmap will be very slow. >
Don't we have Nick's speedups now?
J
| |