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[PATCH 05/16] perf bpf: Compile dwarf-regs.c if CONFIG_BPF_PROLOGUE is on

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From: Wang Nan <wangnan0@huawei.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@huawei.com>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: He Kuang <hekuang@huawei.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1447675815-166222-10-git-send-email-wangnan0@huawei.com
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.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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[GIT PULL 00/16] perf/ebpf improvements and fixes Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 16:40 +0100
  [PATCH 08/16] perf bpf: Allow BPF program config probing options Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 16:40 +0100
  [PATCH 16/16] perf test: Mute test cases error messages if verbose == 0 Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 16:40 +0100
  [PATCH 03/16] bpf tools: Load a program with different instances using preprocessor Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 16:40 +0100
  [PATCH 01/16] tools: Adopt memdup() from tools/perf, moving it to tools/lib/string.c Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 16:40 +0100
  [PATCH 10/16] perf bpf: Generate prologue for BPF programs Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 16:40 +0100
  [PATCH 04/16] perf bpf: Add BPF_PROLOGUE config options for further patches Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 16:40 +0100
  [PATCH 05/16] perf bpf: Compile dwarf-regs.c if CONFIG_BPF_PROLOGUE is on Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 16:40 +0100
  [PATCH 02/16] tools: Clone the kernel's strtobool function Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 16:40 +0100
  [PATCH 13/16] perf bpf: Use same BPF program if arguments are identical Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 16:40 +0100
  [PATCH 11/16] perf test: Test the BPF prologue adding infrastructure Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 16:40 +0100
  [PATCH 15/16] perf test: Print result for each BPF subtest Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 16:40 +0100
  [PATCH 09/16] perf bpf: Add prologue for BPF programs for fetching arguments Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 16:40 +0100
  Re: [GIT PULL 00/16] perf/ebpf improvements and fixes Ingo Molnar <mingo@kernel.org> - 2015-11-18 07:40 +0100
    Re: [GIT PULL 00/16] perf/ebpf improvements and fixes Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-18 13:50 +0100
      Re: [GIT PULL 00/16] perf/ebpf improvements and fixes pi3orama <pi3orama@163.com> - 2015-11-18 14:10 +0100
        Re: [GIT PULL 00/16] perf/ebpf improvements and fixes Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-18 14:30 +0100

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