On 2016/06/10 10:36AM, Arnaldo Carvalho de Melo wrote: > Em Fri, Jun 10, 2016 at 06:32:51PM +0530, Naveen N. Rao escreveu: > > Convert ins__find() to a __weak function for generic functionality, > > while adding a powerpc-specific variant. We look at the function name > > for branch instructions and classify the instructions to one among a > > branch, a function call (branch with LR update) or a function return > > (branch to LR). > > How would this allow one to get a perf.data collected on a powerpc > system, transfer it to a x86-64 (or aarch64, to mention another > workstation wannabe chip) system and then try annotating it? > > There was a previous discussion about this, and it involved having all > yout ppc tables available as well as other arches tables, and then > choosing which one to use based on: > > normalize_arch(thread->mg->machine->env->arch) > > just like was done for support cross unwinding, see recent patch kit by > He Kuang, CCed.
Nice. This would be good to have. I will look at adding powerpc support for cross-architecture unwind. However, for cross-architecture annotation, I think there will be a lot more dependencies since perf currently uses objdump to obtain the disassembly. In addition, the actual binaries will also be needed. - Naveen _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
