Re: [PATCH v3 3/3] perf tools: Hook up MIPS unwind and dwarf-regs in the Makefile

Sergei Shtylyov
2016-04-01T10:58:42Z

Hello.

On 4/1/2016 11:56 AM, Ralf Baechle wrote:

> From: David Daney <david.daney@cavium.com>
>
> Define a new symbol (ARCH_SUPPORTS_LIBUNWIND) in config/Makefile.

Eh? Where is it?

> Use this from x86 and MIPS to gate testing of libunwind.

x86? Where?

> Signed-off-by: David Daney <david.daney@cavium.com>
> Cc: linux-mips@linux-mips.org
> Cc: Jiri Olsa <jolsa@redhat.com>
> Cc: linux-kernel@vger.kernel.org
> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
> Cc: Paul Mackerras <paulus@samba.org>
> Cc: Ingo Molnar <mingo@redhat.com>
> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
> ---
> tools/perf/config/Makefile | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
> index f7d7f5a..713c69c 100644
> --- a/tools/perf/config/Makefile
> +++ b/tools/perf/config/Makefile
> @@ -51,6 +51,11 @@ ifeq ($(NO_PERF_REGS),0)
> $(call detected,CONFIG_PERF_REGS)
> endif
>
> +ifeq ($(ARCH),mips)
> + NO_PERF_REGS := 0
> + LIBUNWIND_LIBS = -lunwind -lunwind-mips
> +endif
> +
> # So far there's only x86 and arm libdw unwind support merged in perf.
> # Disable it on all other architectures in case libdw unwind
> # support is detected in system. Add supported architectures

MBR, Sergei