2011/9/23 Jan Kiszka <jan.kis...@siemens.com> > On 2011-09-23 15:58, Jean-Michel Hautbois wrote: > > 2011/9/23 Gilles Chanteperdrix <gilles.chanteperd...@xenomai.org> > > > >> On 09/23/2011 11:49 AM, Jean-Michel Hautbois wrote: > >>> OK, I have more traces (a few :)) : > >> > >> I meant the I-pipe tracer alone. The I-pipe tracer intead of other > >> ftrace tracers. > >> > >> > > Well, I think it works, I can do a cat /proc/ipipe/trace/max without any > > error in a kernel which doesn't have any other ftrace function. > > Do you have one test in particular in mind ? > > Check > > http://git.kiszka.org/?p=ipipe.git;a=shortlog;h=refs/heads/queues/2.6.35-x86-trace > to get an impression of what is required to get ftrace working on > x86_64. It is not working on x86_32 e.g. as it depends on the arch > providing a NMI-safe, ie. task-stack independent current_thread_info(). > That is also not yet the case on Power. >
Interesting, and impressive. Do you plan supporting it for PowerPC ? Is there a git branch for that too ? I can test on a P2020, if you are interested ;-). JM
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