From: Quentin Monnet Date: Tue, 25 Oct 2022 15:03:29 +0000 (+0100) Subject: bpftool: Add llvm feature to "bpftool version" X-Git-Tag: v6.6.7~3913^2~309^2~11^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=08b8191ba7f99cd1444001e9f4800ff27607d054;p=platform%2Fkernel%2Flinux-starfive.git bpftool: Add llvm feature to "bpftool version" Similarly to "libbfd", add a "llvm" feature to the output of command "bpftool version" to indicate that LLVM is used for disassembling JIT-ed programs. This feature is mutually exclusive (from Makefile definitions) with "libbfd". Signed-off-by: Quentin Monnet Tested-by: Niklas Söderlund Acked-by: Yonghong Song Link: https://lore.kernel.org/r/20221025150329.97371-9-quentin@isovalent.com Signed-off-by: Alexei Starovoitov --- diff --git a/tools/bpf/bpftool/Documentation/common_options.rst b/tools/bpf/bpftool/Documentation/common_options.rst index 4107a58..05350a1 100644 --- a/tools/bpf/bpftool/Documentation/common_options.rst +++ b/tools/bpf/bpftool/Documentation/common_options.rst @@ -7,10 +7,10 @@ Print bpftool's version number (similar to **bpftool version**), the number of the libbpf version in use, and optional features that were included when bpftool was compiled. Optional features include linking - against libbfd to provide the disassembler for JIT-ted programs - (**bpftool prog dump jited**) and usage of BPF skeletons (some - features like **bpftool prog profile** or showing pids associated to - BPF objects may rely on it). + against LLVM or libbfd to provide the disassembler for JIT-ted + programs (**bpftool prog dump jited**) and usage of BPF skeletons + (some features like **bpftool prog profile** or showing pids + associated to BPF objects may rely on it). -j, --json Generate JSON output. For commands that cannot produce JSON, this diff --git a/tools/bpf/bpftool/main.c b/tools/bpf/bpftool/main.c index b22223d..741e50e 100644 --- a/tools/bpf/bpftool/main.c +++ b/tools/bpf/bpftool/main.c @@ -119,6 +119,11 @@ static int do_version(int argc, char **argv) #else const bool has_libbfd = false; #endif +#ifdef HAVE_LLVM_SUPPORT + const bool has_llvm = true; +#else + const bool has_llvm = false; +#endif #ifdef BPFTOOL_WITHOUT_SKELETONS const bool has_skeletons = false; #else @@ -154,6 +159,7 @@ static int do_version(int argc, char **argv) jsonw_name(json_wtr, "features"); jsonw_start_object(json_wtr); /* features */ jsonw_bool_field(json_wtr, "libbfd", has_libbfd); + jsonw_bool_field(json_wtr, "llvm", has_llvm); jsonw_bool_field(json_wtr, "libbpf_strict", !legacy_libbpf); jsonw_bool_field(json_wtr, "skeletons", has_skeletons); jsonw_bool_field(json_wtr, "bootstrap", bootstrap); @@ -172,6 +178,7 @@ static int do_version(int argc, char **argv) printf("using libbpf %s\n", libbpf_version_string()); printf("features:"); print_feature("libbfd", has_libbfd, &nb_features); + print_feature("llvm", has_llvm, &nb_features); print_feature("libbpf_strict", !legacy_libbpf, &nb_features); print_feature("skeletons", has_skeletons, &nb_features); print_feature("bootstrap", bootstrap, &nb_features);