On Mon, 2016-03-28 at 17:29 -0300, Thiago Jung Bauermann wrote: > Am Montag, 28 März 2016, 17:06:32 schrieb Thiago Jung Bauermann:
> > /home/bauermann/src/linux/tools/testing/selftests/ftrace/test.d/kprobe/kp > > robe_ftrace.tc: line 9: echo: write error: Invalid argument > > > > But even without my patch that testcase fails in the same way, so this > > is not a problem introduced by the patch. > > That failure is on this line of kprobe_ftrace.tc: > > echo _do_fork > set_ftrace_filter > > This fails because on powerpc the function symbol has a dot prepended to its > name: Only on big endian powerpc. (Or actually ABI < ELFv2, but in practice that means BE) > # cat available_filter_functions | grep _do_fork > ._do_fork > > If I do s/_do_fork/._do_fork/ in kprobe_ftrace.tc then all ftrace kprobe > tests pass: > > $ sudo ./ftracetest test.d/kprobe/ > === Ftrace unit tests === > [1] Kprobe dynamic event - adding and removing [PASS] > [2] Kprobe dynamic event - busy event check [PASS] > [3] Kprobe dynamic event with arguments [PASS] > [4] Kprobe dynamic event with function tracer [PASS] > [5] Kretprobe dynamic event with arguments [PASS] OK. We fixed that in 'perf probe', but not if you're using the sysfs file directly. Do you want to write a patch for ftracetest to try and handle it? I guess you'd try "_do_fork" and if that fails then try "._do_fork", and maybe only if uname -m says you're running on ppc64? cheers _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
