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From: Ralf Baechle <ralf@linux-mips.org>
To: Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        David Daney <david.daney@cavium.com>,
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        Paul Burton <paul.burton@imgtec.com>,
        James Hogan <james.hogan@imgtec.com>,
        Matt Redfearn <matt.redfearn@imgtec.com>,
        Qais Yousef <qais.yousef@imgtec.com>,
        Ben Hutchings <ben@decadent.org.uk>, Jiri Olsa <jolsa@redhat.com>,
        Wang Nan <wangnan0@huawei.com>,
        Adrian Hunter <adrian.hunter@intel.com>,
        Namhyung Kim <namhyung@kernel.org>,
        Stephane Eranian <eranian@google.com>, linux-mips@linux-mips.org,
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Date: Fri, 1 Apr 2016 10:56:57 +0200
Subject: [PATCH v3 3/3] perf tools: Hook up MIPS unwind and dwarf-regs in the
 Makefile
Sender: linux-kernel-owner@vger.kernel.org
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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>
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
-- 
2.5.5