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    Subject[PATCH 23/27] perf record: Support custom vmlinux path
    Date
    From: He Kuang <hekuang@huawei.com>

    Make perf-record command support --vmlinux option if BPF_PROLOGUE is on.

    'perf record' needs vmlinux as the source of DWARF info to generate
    prologue for BPF programs, so path of vmlinux should be specified.

    Short name 'k' has been taken by 'clockid'. This patch skips the short
    option name and use '--vmlinux' for vmlinux path.

    Signed-off-by: He Kuang <hekuang@huawei.com>
    Signed-off-by: Wang Nan <wangnan0@huawei.com>
    Cc: Alexei Starovoitov <ast@plumgrid.com>
    Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
    Cc: Daniel Borkmann <daniel@iogearbox.net>
    Cc: David Ahern <dsahern@gmail.com>
    Cc: He Kuang <hekuang@huawei.com>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Cc: Kaixu Xia <xiakaixu@huawei.com>
    Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Paul Mackerras <paulus@samba.org>
    Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
    Cc: Zefan Li <lizefan@huawei.com>
    Cc: pi3orama@163.com
    Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
    Link: http://lkml.kernel.org/n/1436445342-1402-38-git-send-email-wangnan0@huawei.com
    ---
    tools/perf/builtin-record.c | 4 ++++
    1 file changed, 4 insertions(+)

    diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
    index 11e7d63..43ff231 100644
    --- a/tools/perf/builtin-record.c
    +++ b/tools/perf/builtin-record.c
    @@ -1103,6 +1103,10 @@ struct option __record_options[] = {
    "clang binary to use for compiling BPF scriptlets"),
    OPT_STRING(0, "clang-opt", &llvm_param.clang_opt, "clang options",
    "options passed to clang when compiling BPF scriptlets"),
    +#ifdef HAVE_BPF_PROLOGUE
    + OPT_STRING(0, "vmlinux", &symbol_conf.vmlinux_name,
    + "file", "vmlinux pathname"),
    +#endif
    #endif
    OPT_END()
    };
    --
    2.1.0


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