Messages in this thread Patch in this message | | | Date | Tue, 17 Nov 2015 09:33:40 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH] perf record: Support custom vmlinux path |
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Em Tue, Nov 17, 2015 at 09:44:44AM +0000, Wang Nan escreveu: > 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@kernel.org> > Cc: Arnaldo Carvalho de Melo <acme@redhat.com> > Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> > Cc: Namhyung Kim <namhyung@kernel.org> > Cc: Zefan Li <lizefan@huawei.com> > Cc: pi3orama@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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