On Fri, 19 Jun 2015 14:17:03 +0200 Torsten Duwe <d...@lst.de> wrote: > On Fri, Jun 19, 2015 at 10:15:44AM +0300, Denis Kirjanov wrote: > > > > Hi Torsten, > > > > could you provide a description how you did test that. > > Vanilla kernel, those patches on top, built as described to > Steven in the previous mail (.config attached there, built > natively on ppc64le ABIv2, mentioned tool versions) >
Great that you got it working on your machine. But you need to do it in a way that you don't break builds of existing machines, with existing (still supported) compilers. -- Steve > make vmlinux, make modules, build initrd > qemu-system-ppc64 -no-reboot -enable-kvm -m 20480 -kernel vmlinux > -initrd initrd.gz -append console=hvc0 -nographic -vga none > inside: > cd /sys/kernel/debug/tracing > mkdir instances/Foo > cd instances/Foo > echo function > current_tracer > > current_tracer holds "nop" or "function"; the transition is accompanied > by heavy binary patching. When the function tracer is active, almost all > calls go through ftrace_caller. This should be enough for a start; the > proper stack frame layout details for the tracer functions still remain > to be checked... > > Torsten _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
