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Subject[PATCH 2/2] perf tools: Hook up MIPS unwind and dwarf-regs in the Makefile
From: David Daney <david.daney@cavium.com>

Define a new symbol (ARCH_SUPPORTS_LIBUNWIND) in config/Makefile.
Use this from x86 and MIPS to gate testing of libunwind.

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>
Patchwork: https://patchwork.linux-mips.org/patch/5250/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
tools/perf/config/Makefile | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index cc22408..0d0595e 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -27,19 +27,29 @@ ifeq ($(ARCH),x86)
else
LIBUNWIND_LIBS = -lunwind -lunwind-x86
endif
+ ARCH_SUPPORTS_LIBUNWIND := 1
NO_PERF_REGS := 0
endif

ifeq ($(ARCH),arm)
NO_PERF_REGS := 0
+ ARCH_SUPPORTS_LIBUNWIND := 1
LIBUNWIND_LIBS = -lunwind -lunwind-arm
endif

ifeq ($(ARCH),arm64)
NO_PERF_REGS := 0
+ ARCH_SUPPORTS_LIBUNWIND := 1
LIBUNWIND_LIBS = -lunwind -lunwind-aarch64
endif

+# Additional ARCH settings for MIPS
+ifeq ($(ARCH),mips)
+ ARCH_SUPPORTS_LIBUNWIND := 1
+ 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
--
1.9.3


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