Messages in this thread | | | Subject | Re: [PATCH v2 4/4] perf: Support perf -vv | From | "Jin, Yao" <> | Date | Wed, 28 Mar 2018 22:00:32 +0800 |
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On 3/28/2018 9:22 PM, Jiri Olsa wrote: > On Wed, Mar 28, 2018 at 10:57:08PM +0800, Jin Yao wrote: >> 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' which will print the >> compiled-in status of libraries. >> >> The 'perf -vv' is equal to 'perf -version --build-options'. >> >> For example: >> >> $ ./perf -vv or ./perf -version --build-options >> perf version 4.13.rc5.gcb1183 >> dwarf: [ on ] >> dwarf_getlocations: [ on ] >> glibc: [ on ] >> gtk2: [ on ] >> libaudit: [ OFF ] >> libbfd: [ on ] >> libelf: [ on ] >> libnuma: [ on ] >> numa_num_possible_cpus: [ on ] >> libperl: [ on ] >> libpython: [ on ] >> libslang: [ on ] >> libcrypto: [ on ] >> libunwind: [ on ] >> libdw-dwarf-unwind: [ on ] >> zlib: [ on ] >> lzma: [ on ] >> get_cpuid: [ on ] >> bpf: [ on ] >> [ on ]: library is compiled-in >> [ OFF ]: library is disabled in make configuration >> OR library is not installed in build environment >> >> v2: >> --- >> Use a global variable version_verbose to count the number of 'v'. >> >> Signed-off-by: Jin Yao <yao.jin@linux.intel.com> >> --- >> tools/perf/perf.c | 22 ++++++++++++++++++---- >> tools/perf/perf.h | 1 + >> 2 files changed, 19 insertions(+), 4 deletions(-) >> >> diff --git a/tools/perf/perf.c b/tools/perf/perf.c >> index 1b3fc8e..355219e 100644 >> --- a/tools/perf/perf.c >> +++ b/tools/perf/perf.c >> @@ -32,7 +32,7 @@ >> #include <linux/kernel.h> >> >> const char perf_usage_string[] = >> - "perf [--version] [--help] [OPTIONS] COMMAND [ARGS]"; >> + "perf [--version [--build-options]] [--help] [OPTIONS] COMMAND [ARGS]"; > > --build-options is 'perf version' option no? > > jirka >
Yes. Command-line something like:
perf --version --build-options or perf -v --build-options.
Is this usage string not correct? If so, I'd like to fix that.
"perf [--version [--build-options]] [--help] [OPTIONS] COMMAND [ARGS]";
Thanks Jin Yao
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