perf tools: add support for generating bpf prologue on powerpc

[Michael Ellerman]

On Thu, 2016-05-05 at 15:23:19 UTC, "Naveen N. Rao" wrote:
> Generalize existing macros to serve the purpose.
> 
> Cc: Wang Nan <wangnan0 at huawei.com>
> Cc: Arnaldo Carvalho de Melo <acme at redhat.com>
> Cc: Masami Hiramatsu <mhiramat at kernel.org>
> Cc: Ian Munsie <imunsie at au1.ibm.com>
> Cc: Michael Ellerman <mpe at ellerman.id.au>
> Signed-off-by: Naveen N. Rao <naveen.n.rao at linux.vnet.ibm.com>
> ---
> With this patch:
>     # ./perf test 37
>     37: Test BPF filter                                          :
>     37.1: Test basic BPF filtering                               : Ok
>     37.2: Test BPF prologue generation                           : Ok
>     37.3: Test BPF relocation checker                            : Ok
> 
>  tools/perf/arch/powerpc/Makefile          |  1 +
>  tools/perf/arch/powerpc/util/dwarf-regs.c | 40 +++++++++++++++++++++----------
>  2 files changed, 29 insertions(+), 12 deletions(-)

Looks feasible, and is in powerpc only code, should I take this or acme?

cheers