linux-kernel - [PATCH 07/37] perf bpf: Compile dwarf-regs.c if CONFIG_BPF

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Date:	Thu, 19 Nov 2015 14:52:53 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel@...r.kernel.org, Wang Nan <wangnan0@...wei.com>,
	He Kuang <hekuang@...wei.com>,
	Alexei Starovoitov <ast@...nel.org>,
	Zefan Li <lizefan@...wei.com>, pi3orama@....com,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 07/37] perf bpf: Compile dwarf-regs.c if CONFIG_BPF_PROLOGUE is on

From: Wang Nan <wangnan0@...wei.com>

regs_query_register_offset() in dwarf-regs.c is required by BPF
prologue.  This patch compiles it if CONFIG_BPF_PROLOGUE is on to avoid
build failure when CONFIG_BPF_PROLOGUE is on but CONFIG_DWARF is not
set.

Signed-off-by: He Kuang <hekuang@...wei.com>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Cc: Alexei Starovoitov <ast@...nel.org>
Cc: He Kuang <hekuang@...wei.com>
Cc: Zefan Li <lizefan@...wei.com>
Cc: pi3orama@....com
Link: http://lkml.kernel.org/r/1447675815-166222-10-git-send-email-wangnan0@huawei.com
Signed-off-by: Wang Nan <wangnan0@...wei.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 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 ff63649fa9ac..465970370f3e 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
-- 
2.1.0

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