181 lines · c
1// SPDX-License-Identifier: GPL-2.02#include "builtin.h"3#include "color.h"4#include "util/debug.h"5#include "util/header.h"6#include <tools/config.h>7#include <stdbool.h>8#include <stdio.h>9#include <string.h>10#include <subcmd/parse-options.h>11 12static const char * const check_subcommands[] = { "feature", NULL };13static struct option check_options[] = {14 OPT_BOOLEAN('q', "quiet", &quiet, "do not show any warnings or messages"),15 OPT_END()16};17static struct option check_feature_options[] = { OPT_PARENT(check_options) };18 19static const char *check_usage[] = { NULL, NULL };20static const char *check_feature_usage[] = {21 "perf check feature <feature_list>",22 NULL23};24 25struct feature_status supported_features[] = {26 FEATURE_STATUS("aio", HAVE_AIO_SUPPORT),27 FEATURE_STATUS("bpf", HAVE_LIBBPF_SUPPORT),28 FEATURE_STATUS("bpf_skeletons", HAVE_BPF_SKEL),29 FEATURE_STATUS("debuginfod", HAVE_DEBUGINFOD_SUPPORT),30 FEATURE_STATUS("dwarf", HAVE_DWARF_SUPPORT),31 FEATURE_STATUS("dwarf_getlocations", HAVE_DWARF_GETLOCATIONS_SUPPORT),32 FEATURE_STATUS("dwarf-unwind", HAVE_DWARF_UNWIND_SUPPORT),33 FEATURE_STATUS("auxtrace", HAVE_AUXTRACE_SUPPORT),34 FEATURE_STATUS("libaudit", HAVE_LIBAUDIT_SUPPORT),35 FEATURE_STATUS("libbfd", HAVE_LIBBFD_SUPPORT),36 FEATURE_STATUS("libcapstone", HAVE_LIBCAPSTONE_SUPPORT),37 FEATURE_STATUS("libcrypto", HAVE_LIBCRYPTO_SUPPORT),38 FEATURE_STATUS("libdw-dwarf-unwind", HAVE_DWARF_SUPPORT),39 FEATURE_STATUS("libelf", HAVE_LIBELF_SUPPORT),40 FEATURE_STATUS("libnuma", HAVE_LIBNUMA_SUPPORT),41 FEATURE_STATUS("libopencsd", HAVE_CSTRACE_SUPPORT),42 FEATURE_STATUS("libperl", HAVE_LIBPERL_SUPPORT),43 FEATURE_STATUS("libpfm4", HAVE_LIBPFM),44 FEATURE_STATUS("libpython", HAVE_LIBPYTHON_SUPPORT),45 FEATURE_STATUS("libslang", HAVE_SLANG_SUPPORT),46 FEATURE_STATUS("libtraceevent", HAVE_LIBTRACEEVENT),47 FEATURE_STATUS("libunwind", HAVE_LIBUNWIND_SUPPORT),48 FEATURE_STATUS("lzma", HAVE_LZMA_SUPPORT),49 FEATURE_STATUS("numa_num_possible_cpus", HAVE_LIBNUMA_SUPPORT),50 FEATURE_STATUS("syscall_table", HAVE_SYSCALL_TABLE_SUPPORT),51 FEATURE_STATUS("zlib", HAVE_ZLIB_SUPPORT),52 FEATURE_STATUS("zstd", HAVE_ZSTD_SUPPORT),53 54 /* this should remain at end, to know the array end */55 FEATURE_STATUS(NULL, _)56};57 58static void on_off_print(const char *status)59{60 printf("[ ");61 62 if (!strcmp(status, "OFF"))63 color_fprintf(stdout, PERF_COLOR_RED, "%-3s", status);64 else65 color_fprintf(stdout, PERF_COLOR_GREEN, "%-3s", status);66 67 printf(" ]");68}69 70/* Helper function to print status of a feature along with name/macro */71static void status_print(const char *name, const char *macro,72 const char *status)73{74 printf("%22s: ", name);75 on_off_print(status);76 printf(" # %s\n", macro);77}78 79#define STATUS(feature) \80do { \81 if (feature.is_builtin) \82 status_print(feature.name, feature.macro, "on"); \83 else \84 status_print(feature.name, feature.macro, "OFF"); \85} while (0)86 87/**88 * check whether "feature" is built-in with perf89 *90 * returns:91 * 0: NOT built-in or Feature not known92 * 1: Built-in93 */94static int has_support(const char *feature)95{96 for (int i = 0; supported_features[i].name; ++i) {97 if ((strcasecmp(feature, supported_features[i].name) == 0) ||98 (strcasecmp(feature, supported_features[i].macro) == 0)) {99 if (!quiet)100 STATUS(supported_features[i]);101 return supported_features[i].is_builtin;102 }103 }104 105 if (!quiet)106 pr_err("Unknown feature '%s', please use 'perf version --build-options' to see which ones are available.\n", feature);107 108 return 0;109}110 111 112/**113 * Usage: 'perf check feature <feature_list>'114 *115 * <feature_list> can be a single feature name/macro, or a comma-separated list116 * of feature names/macros117 * eg. argument can be "libtraceevent" or "libtraceevent,bpf" etc118 *119 * In case of a comma-separated list, feature_enabled will be 1, only if120 * all features passed in the string are supported121 *122 * Note that argv will get modified123 */124static int subcommand_feature(int argc, const char **argv)125{126 char *feature_list;127 char *feature_name;128 int feature_enabled;129 130 argc = parse_options(argc, argv, check_feature_options,131 check_feature_usage, 0);132 133 if (!argc)134 usage_with_options(check_feature_usage, check_feature_options);135 136 if (argc > 1) {137 pr_err("Too many arguments passed to 'perf check feature'\n");138 return -1;139 }140 141 feature_enabled = 1;142 /* feature_list is a non-const copy of 'argv[0]' */143 feature_list = strdup(argv[0]);144 if (!feature_list) {145 pr_err("ERROR: failed to allocate memory for feature list\n");146 return -1;147 }148 149 feature_name = strtok(feature_list, ",");150 151 while (feature_name) {152 feature_enabled &= has_support(feature_name);153 feature_name = strtok(NULL, ",");154 }155 156 free(feature_list);157 158 return !feature_enabled;159}160 161int cmd_check(int argc, const char **argv)162{163 argc = parse_options_subcommand(argc, argv, check_options,164 check_subcommands, check_usage, 0);165 166 if (!argc)167 usage_with_options(check_usage, check_options);168 169 if (strcmp(argv[0], "feature") == 0)170 return subcommand_feature(argc, argv);171 172 /* If no subcommand matched above, print usage help */173 pr_err("Unknown subcommand: %s\n", argv[0]);174 usage_with_options(check_usage, check_options);175 176 /* free usage string allocated by parse_options_subcommand */177 free((void *)check_usage[0]);178 179 return 0;180}181