[tip:perf/urgent] perf tools: Add 'perf -vv' as an alias to 'perf version --build-options'

[tip-bot for Jin Yao]

Commit-ID:  3aa94b10ab0a818ed9fa2dc06c40812c136f9a5a
Gitweb: https://git.kernel.org/tip/3aa94b10ab0a818ed9fa2dc06c40812c136f9a5a
Author: Jin Yao 
AuthorDate: Fri, 30 Mar 2018 17:27:15 +0800
Committer:  Arnaldo Carvalho de Melo 
CommitDate: Mon, 2 Apr 2018 13:50:35 -0300

perf tools: Add 'perf -vv' as an alias to 'perf version --build-options'

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 
Tested-by: Arnaldo Carvalho de Melo 
Acked-by: Jiri Olsa 
Cc: Alexander Shishkin 
Cc: Andi Kleen 
Cc: Jin Yao 
Cc: Kan Liang 
Cc: Peter Zijlstra 
Link: 
http://lkml.kernel.org/r/1522402036-22915-6-git-send-email-yao@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo 
---
 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 1b3fc8ec0fa2..1659029d03fc 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 8fec1abd0f1f..a1a97956136f 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

[tip:perf/urgent] perf tools: Add 'perf -vv' as an alias to 'perf version --build-options'

[tip-bot for Jin Yao]

Commit-ID:  3aa94b10ab0a818ed9fa2dc06c40812c136f9a5a
Gitweb: https://git.kernel.org/tip/3aa94b10ab0a818ed9fa2dc06c40812c136f9a5a
Author: Jin Yao 
AuthorDate: Fri, 30 Mar 2018 17:27:15 +0800
Committer:  Arnaldo Carvalho de Melo 
CommitDate: Mon, 2 Apr 2018 13:50:35 -0300

perf tools: Add 'perf -vv' as an alias to 'perf version --build-options'

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 
Tested-by: Arnaldo Carvalho de Melo 
Acked-by: Jiri Olsa 
Cc: Alexander Shishkin 
Cc: Andi Kleen 
Cc: Jin Yao 
Cc: Kan Liang 
Cc: Peter Zijlstra 
Link: 
http://lkml.kernel.org/r/1522402036-22915-6-git-send-email-yao@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo 
---
 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 1b3fc8ec0fa2..1659029d03fc 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 8fec1abd0f1f..a1a97956136f 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