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// SPDX-License-Identifier: GPL-2.0
#include "builtin.h"
#include "color.h"
#include "util/debug.h"
#include "util/header.h"
#include <tools/config.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <subcmd/parse-options.h>
static const char * const check_subcommands[] = { "feature", NULL };
static struct option check_options[] = {
OPT_BOOLEAN('q', "quiet", &quiet, "do not show any warnings or messages"),
OPT_END()
};
static struct option check_feature_options[] = { OPT_PARENT(check_options) };
static const char *check_usage[] = { NULL, NULL };
static const char *check_feature_usage[] = {
"perf check feature <feature_list>",
NULL
};
#define FEATURE_STATUS(name_, macro_) { \
.name = name_, \
.macro = #macro_, \
.is_builtin = IS_BUILTIN(macro_) }
#define FEATURE_STATUS_TIP(name_, macro_, tip_) { \
.name = name_, \
.macro = #macro_, \
.tip = tip_, \
.is_builtin = IS_BUILTIN(macro_) }
struct feature_status supported_features[] = {
FEATURE_STATUS("aio", HAVE_AIO_SUPPORT),
FEATURE_STATUS("bpf", HAVE_LIBBPF_SUPPORT),
FEATURE_STATUS("bpf_skeletons", HAVE_BPF_SKEL),
FEATURE_STATUS("debuginfod", HAVE_DEBUGINFOD_SUPPORT),
FEATURE_STATUS("dwarf", HAVE_LIBDW_SUPPORT),
FEATURE_STATUS("dwarf_getlocations", HAVE_LIBDW_SUPPORT),
FEATURE_STATUS("dwarf-unwind", HAVE_DWARF_UNWIND_SUPPORT),
FEATURE_STATUS("auxtrace", HAVE_AUXTRACE_SUPPORT),
FEATURE_STATUS_TIP("libbfd", HAVE_LIBBFD_SUPPORT, "Deprecated, license incompatibility, use BUILD_NONDISTRO=1 and install binutils-dev[el]"),
FEATURE_STATUS("libcapstone", HAVE_LIBCAPSTONE_SUPPORT),
FEATURE_STATUS("libcrypto", HAVE_LIBCRYPTO_SUPPORT),
FEATURE_STATUS("libdw-dwarf-unwind", HAVE_LIBDW_SUPPORT),
FEATURE_STATUS("libelf", HAVE_LIBELF_SUPPORT),
FEATURE_STATUS("libnuma", HAVE_LIBNUMA_SUPPORT),
FEATURE_STATUS("libopencsd", HAVE_CSTRACE_SUPPORT),
FEATURE_STATUS("libperl", HAVE_LIBPERL_SUPPORT),
FEATURE_STATUS("libpfm4", HAVE_LIBPFM),
FEATURE_STATUS("libpython", HAVE_LIBPYTHON_SUPPORT),
FEATURE_STATUS("libslang", HAVE_SLANG_SUPPORT),
FEATURE_STATUS("libtraceevent", HAVE_LIBTRACEEVENT),
FEATURE_STATUS_TIP("libunwind", HAVE_LIBUNWIND_SUPPORT, "Deprecated, use LIBUNWIND=1 and install libunwind-dev[el] to build with it"),
FEATURE_STATUS("lzma", HAVE_LZMA_SUPPORT),
FEATURE_STATUS("numa_num_possible_cpus", HAVE_LIBNUMA_SUPPORT),
FEATURE_STATUS("zlib", HAVE_ZLIB_SUPPORT),
FEATURE_STATUS("zstd", HAVE_ZSTD_SUPPORT),
/* this should remain at end, to know the array end */
FEATURE_STATUS(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(" ]");
}
/* Helper function to print status of a feature along with name/macro */
void feature_status__printf(const struct feature_status *feature)
{
const char *name = feature->name, *macro = feature->macro,
*status = feature->is_builtin ? "on" : "OFF";
printf("%22s: ", name);
on_off_print(status);
printf(" # %s", macro);
if (!feature->is_builtin && feature->tip)
printf(" ( tip: %s )", feature->tip);
putchar('\n');
}
/**
* check whether "feature" is built-in with perf
*
* returns:
* 0: NOT built-in or Feature not known
* 1: Built-in
*/
static int has_support(const char *feature)
{
for (int i = 0; supported_features[i].name; ++i) {
if ((strcasecmp(feature, supported_features[i].name) == 0) ||
(strcasecmp(feature, supported_features[i].macro) == 0)) {
if (!quiet)
feature_status__printf(&supported_features[i]);
return supported_features[i].is_builtin;
}
}
if (!quiet)
pr_err("Unknown feature '%s', please use 'perf version --build-options' to see which ones are available.\n", feature);
return 0;
}
/**
* Usage: 'perf check feature <feature_list>'
*
* <feature_list> can be a single feature name/macro, or a comma-separated list
* of feature names/macros
* eg. argument can be "libtraceevent" or "libtraceevent,bpf" etc
*
* In case of a comma-separated list, feature_enabled will be 1, only if
* all features passed in the string are supported
*
* Note that argv will get modified
*/
static int subcommand_feature(int argc, const char **argv)
{
char *feature_list;
char *feature_name;
int feature_enabled;
argc = parse_options(argc, argv, check_feature_options,
check_feature_usage, 0);
if (!argc)
usage_with_options(check_feature_usage, check_feature_options);
if (argc > 1) {
pr_err("Too many arguments passed to 'perf check feature'\n");
return -1;
}
feature_enabled = 1;
/* feature_list is a non-const copy of 'argv[0]' */
feature_list = strdup(argv[0]);
if (!feature_list) {
pr_err("ERROR: failed to allocate memory for feature list\n");
return -1;
}
feature_name = strtok(feature_list, ",");
while (feature_name) {
feature_enabled &= has_support(feature_name);
feature_name = strtok(NULL, ",");
}
free(feature_list);
return !feature_enabled;
}
int cmd_check(int argc, const char **argv)
{
argc = parse_options_subcommand(argc, argv, check_options,
check_subcommands, check_usage, 0);
if (!argc)
usage_with_options(check_usage, check_options);
if (strcmp(argv[0], "feature") == 0)
return subcommand_feature(argc, argv);
/* If no subcommand matched above, print usage help */
pr_err("Unknown subcommand: %s\n", argv[0]);
usage_with_options(check_usage, check_options);
/* free usage string allocated by parse_options_subcommand */
free((void *)check_usage[0]);
return 0;
}
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