Messages in this thread Patch in this message | | | From | Jin Yao <> | Subject | [PATCH v4 5/6] perf: Support perf -vv | Date | Fri, 30 Mar 2018 17:27:15 +0800 |
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We keep having bug reports that when users build perf on their own, but they don't install some needed libraries such as libelf, libbfd/libibery.
The perf can build, but it is missing important functionality.
This patch provides a new option '-vv' for perf which will print the compiled-in status of libraries.
The 'perf -vv' is mapped to 'perf version --build-options'.
For example:
$ ./perf -vv
perf version 4.13.rc5.g6727c5 dwarf: [ on ] # HAVE_DWARF_SUPPORT dwarf_getlocations: [ on ] # HAVE_DWARF_GETLOCATIONS_SUPPORT glibc: [ on ] # HAVE_GLIBC_SUPPORT gtk2: [ on ] # HAVE_GTK2_SUPPORT libaudit: [ OFF ] # HAVE_LIBAUDIT_SUPPORT libbfd: [ on ] # HAVE_LIBBFD_SUPPORT libelf: [ on ] # HAVE_LIBELF_SUPPORT libnuma: [ on ] # HAVE_LIBNUMA_SUPPORT numa_num_possible_cpus: [ on ] # HAVE_LIBNUMA_SUPPORT libperl: [ on ] # HAVE_LIBPERL_SUPPORT libpython: [ on ] # HAVE_LIBPYTHON_SUPPORT libslang: [ on ] # HAVE_SLANG_SUPPORT libcrypto: [ on ] # HAVE_LIBCRYPTO_SUPPORT libunwind: [ on ] # HAVE_LIBUNWIND_SUPPORT libdw-dwarf-unwind: [ on ] # HAVE_DWARF_SUPPORT zlib: [ on ] # HAVE_ZLIB_SUPPORT lzma: [ on ] # HAVE_LZMA_SUPPORT get_cpuid: [ on ] # HAVE_AUXTRACE_SUPPORT bpf: [ on ] # HAVE_LIBBPF_SUPPORT
v3: --- One bug is found in v2. It didn't process the option like '-vabc' correctly. Fix this bug.
v2: --- Use a global variable version_verbose to record the number of 'v'.
Signed-off-by: Jin Yao <yao.jin@linux.intel.com> --- tools/perf/perf.c | 6 ++++++ tools/perf/perf.h | 1 + 2 files changed, 7 insertions(+)
diff --git a/tools/perf/perf.c b/tools/perf/perf.c index 1b3fc8e..1659029 100644 --- a/tools/perf/perf.c +++ b/tools/perf/perf.c @@ -190,6 +190,12 @@ static int handle_options(const char ***argv, int *argc, int *envchanged) break; } + if (!strcmp(cmd, "-vv")) { + (*argv)[0] = "version"; + version_verbose = 1; + break; + } + /* * Check remaining flags. */ diff --git a/tools/perf/perf.h b/tools/perf/perf.h index 8fec1ab..a1a9795 100644 --- a/tools/perf/perf.h +++ b/tools/perf/perf.h @@ -84,6 +84,7 @@ struct record_opts { struct option; extern const char * const *record_usage; extern struct option *record_options; +extern int version_verbose; int record__parse_freq(const struct option *opt, const char *str, int unset); #endif -- 2.7.4
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