linux-kernel - [PATCH 14/22] perf tools: Compile dwarf-regs.c if CONFIG_BPF

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Date:	Wed, 23 Sep 2015 11:22:35 +0000
From:	Wang Nan <wangnan0@...wei.com>
To:	<acme@...hat.com>
CC:	<linux-kernel@...r.kernel.org>, <pi3orama@....com>,
	Wang Nan <wangnan0@...wei.com>, He Kuang <hekuang@...wei.com>,
	Alexei Starovoitov <ast@...mgrid.com>,
	Brendan Gregg <brendan.d.gregg@...il.com>,
	"Daniel Borkmann" <daniel@...earbox.net>,
	David Ahern <dsahern@...il.com>, Jiri Olsa <jolsa@...nel.org>,
	Kaixu Xia <xiakaixu@...wei.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Zefan Li <lizefan@...wei.com>
Subject: [PATCH 14/22] perf tools: Compile dwarf-regs.c if CONFIG_BPF_PROLOGUE is on

regs_query_register_offset() in dwarf-regs.c is required by BPF prologue.
Make it be compiled if CONFIG_BPF_PROLOGUE is on to avoid building failure
when CONFIG_BPF_PROLOGUE is on but CONFIG_DWARF is not set.

Signed-off-by: Wang Nan <wangnan0@...wei.com>
Signed-off-by: He Kuang <hekuang@...wei.com>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Cc: Alexei Starovoitov <ast@...mgrid.com>
Cc: Brendan Gregg <brendan.d.gregg@...il.com>
Cc: Daniel Borkmann <daniel@...earbox.net>
Cc: David Ahern <dsahern@...il.com>
Cc: He Kuang <hekuang@...wei.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Kaixu Xia <xiakaixu@...wei.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Zefan Li <lizefan@...wei.com>
Cc: pi3orama@....com
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Link: http://lkml.kernel.org/n/ebpf-6yw9eg0ej3l4jnqhinngkw86@git.kernel.org
---
 tools/perf/arch/x86/util/Build | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/arch/x86/util/Build b/tools/perf/arch/x86/util/Build
index ff63649..4659703 100644
--- a/tools/perf/arch/x86/util/Build
+++ b/tools/perf/arch/x86/util/Build
@@ -5,6 +5,7 @@ libperf-y += kvm-stat.o
 libperf-y += perf_regs.o
 
 libperf-$(CONFIG_DWARF) += dwarf-regs.o
+libperf-$(CONFIG_BPF_PROLOGUE) += dwarf-regs.o
 
 libperf-$(CONFIG_LIBUNWIND)          += unwind-libunwind.o
 libperf-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o
-- 
1.8.3.4

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