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