Em Tue, Nov 17, 2015 at 09:44:44AM +0000, Wang Nan escreveu:
> From: He Kuang <heku...@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 <heku...@huawei.com>
> Signed-off-by: Wang Nan <wangn...@huawei.com>
> Cc: Alexei Starovoitov <a...@kernel.org>
> Cc: Arnaldo Carvalho de Melo <a...@redhat.com>
> Cc: Masami Hiramatsu <masami.hiramatsu...@hitachi.com>
> Cc: Namhyung Kim <namhy...@kernel.org>
> Cc: Zefan Li <lize...@huawei.com>
> Cc: pi3or...@163.com
> ---
>
> Hi Arnaldo,
>
> This patch is a standalone improvement to support BPF argument fetching
> better. Without this patch vmlinux must be reside in standard path
> for BPF loader finding it. I think you can review this patch with other
> patch I send today. Other patch on my local tree is not belong to this
> topic.
Thanks, applying.
> Thank you.
>
> ---
> 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 199fc31..cfd0e14 100644
> --- a/tools/perf/builtin-record.c
> +++ b/tools/perf/builtin-record.c
> @@ -1118,6 +1118,10 @@ 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()
> };
> --
> 1.8.3.4
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