Commit 9ff2a647 authored Mar 30, 2018 by Jin Yao Committed by Arnaldo Carvalho de Melo Apr 02, 2018

perf version: Print the compiled-in status of libraries



This patch checks the values passed by CFLAGS (-DHAVE_XXX) and then
print the status of libraries.

For example, if HAVE_DWARF_SUPPORT is defined, that means the library
"dwarf" is compiled-in. The patch will print the status "on" for this
library otherwise it print the status "OFF".

A new option '--build-options' created for 'perf version' supports the
printing of library status.

For example:

$ ./perf version --build-options
    or
  ./perf --version --build-options
    or
  ./perf -v --build-options

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

v4:

1. Also print the macro name. That would make it easier
   to grep around in the source looking for where code
   related a particular features is located.

2. Update since HAVE_DWARF_GETLOCATIONS is renamed to
   HAVE_DWARF_GETLOCATIONS_SUPPORT

v3:

Remove following unnecessary help message.

1. [ on  ]: library is compiled-in
   [ OFF ]: library is disabled in make configuration
            OR library is not installed in build environment

2. Create '--build-options' option.

3. Use standard option parsing API 'parse_options'.

v2:

1. Use IS_BUILTIN macro to replace #ifdef/#endif block.

2. Print color for on/OFF.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Suggested-by: Ingo Molnar <mingo@kernel.org>
Suggested-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1522402036-22915-5-git-send-email-yao.jin@linux.intel.com


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent a36ebe4e

tools/perf/builtin-version.c

+81 −1

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0
		#include "builtin.h"
		#include "perf.h"
		#include "color.h"
		#include <linux/compiler.h>
		#include <tools/config.h>
		#include <stdio.h>
		#include <string.h>
		#include <subcmd/parse-options.h>

		int cmd_version(int argc __maybe_unused, const char **argv __maybe_unused)
		int version_verbose;

		struct version {
		bool build_options;
		};

		static struct version version;

		static struct option version_options[] = {
		OPT_BOOLEAN(0, "build-options", &version.build_options,
		"display the build options"),
		};

		static const char * const version_usage[] = {
		"perf version [<options>]",
		NULL
		};

		static void on_off_print(const char *status)
		{
		printf("[ ");

		if (!strcmp(status, "OFF"))
		color_fprintf(stdout, PERF_COLOR_RED, "%-3s", status);
		else
		color_fprintf(stdout, PERF_COLOR_GREEN, "%-3s", status);

		printf(" ]");
		}

		static void status_print(const char name, const char macro,
		const char *status)
		{
		printf("%22s: ", name);
		on_off_print(status);
		printf(" # %s\n", macro);
		}

		#define STATUS(__d, __m) \
		do { \
		if (IS_BUILTIN(__d)) \
		status_print(#__m, #__d, "on"); \
		else \
		status_print(#__m, #__d, "OFF"); \
		} while (0)

		static void library_status(void)
		{
		STATUS(HAVE_DWARF_SUPPORT, dwarf);
		STATUS(HAVE_DWARF_GETLOCATIONS_SUPPORT, dwarf_getlocations);
		STATUS(HAVE_GLIBC_SUPPORT, glibc);
		STATUS(HAVE_GTK2_SUPPORT, gtk2);
		STATUS(HAVE_LIBAUDIT_SUPPORT, libaudit);
		STATUS(HAVE_LIBBFD_SUPPORT, libbfd);
		STATUS(HAVE_LIBELF_SUPPORT, libelf);
		STATUS(HAVE_LIBNUMA_SUPPORT, libnuma);
		STATUS(HAVE_LIBNUMA_SUPPORT, numa_num_possible_cpus);
		STATUS(HAVE_LIBPERL_SUPPORT, libperl);
		STATUS(HAVE_LIBPYTHON_SUPPORT, libpython);
		STATUS(HAVE_SLANG_SUPPORT, libslang);
		STATUS(HAVE_LIBCRYPTO_SUPPORT, libcrypto);
		STATUS(HAVE_LIBUNWIND_SUPPORT, libunwind);
		STATUS(HAVE_DWARF_SUPPORT, libdw-dwarf-unwind);
		STATUS(HAVE_ZLIB_SUPPORT, zlib);
		STATUS(HAVE_LZMA_SUPPORT, lzma);
		STATUS(HAVE_AUXTRACE_SUPPORT, get_cpuid);
		STATUS(HAVE_LIBBPF_SUPPORT, bpf);
		}

		int cmd_version(int argc, const char **argv)
		{
		argc = parse_options(argc, argv, version_options, version_usage,
		PARSE_OPT_STOP_AT_NON_OPTION);

		printf("perf version %s\n", perf_version_string);

		if (version.build_options \|\| version_verbose == 1)
		library_status();

		return 0;
		}