tools/perf/builtin-buildid-list.c

Source file repositories/reference/linux-study-clean/tools/perf/builtin-buildid-list.c

File Facts

System
Linux kernel
Corpus path
tools/perf/builtin-buildid-list.c
Extension
.c
Size
5053 bytes
Lines
177
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

#include "builtin.h"
#include "util/build-id.h"
#include "util/debug.h"
#include "util/dso.h"
#include "util/map.h"
#include <subcmd/pager.h>
#include <subcmd/parse-options.h>
#include "util/session.h"
#include "util/symbol.h"
#include "util/data.h"
#include "util/util.h"
#include <errno.h>
#include <inttypes.h>
#include <linux/err.h>

static int buildid__map_cb(struct map *map, void *arg __maybe_unused)
{
	const struct dso *dso = map__dso(map);
	char bid_buf[SBUILD_ID_SIZE];
	const char *dso_long_name = dso__long_name(dso);
	const char *dso_short_name = dso__short_name(dso);

	memset(bid_buf, 0, sizeof(bid_buf));
	if (dso__has_build_id(dso))
		build_id__snprintf(dso__bid(dso), bid_buf, sizeof(bid_buf));
	printf("%s %16" PRIx64 " %16" PRIx64, bid_buf, map__start(map), map__end(map));
	if (dso_long_name != NULL)
		printf(" %s", dso_long_name);
	else if (dso_short_name != NULL)
		printf(" %s", dso_short_name);

	printf("\n");

	return 0;
}

static void buildid__show_kernel_maps(void)
{
	struct perf_env host_env;
	struct machine *machine;

	perf_env__init(&host_env);
	machine = machine__new_host(&host_env);
	machine__for_each_kernel_map(machine, buildid__map_cb, NULL);
	machine__delete(machine);
	perf_env__exit(&host_env);
}

static int sysfs__fprintf_build_id(FILE *fp)
{
	char sbuild_id[SBUILD_ID_SIZE];
	int ret;

	ret = sysfs__snprintf_build_id("/", sbuild_id, sizeof(sbuild_id));
	if (ret != sizeof(sbuild_id))
		return ret < 0 ? ret : -EINVAL;

	return fprintf(fp, "%s\n", sbuild_id);
}

static int filename__fprintf_build_id(const char *name, FILE *fp)
{
	char sbuild_id[SBUILD_ID_SIZE];
	int ret;

	ret = filename__snprintf_build_id(name, sbuild_id, sizeof(sbuild_id));
	if (ret != sizeof(sbuild_id))
		return ret < 0 ? ret : -EINVAL;

	return fprintf(fp, "%s\n", sbuild_id);
}

static bool dso__skip_buildid(struct dso *dso, int with_hits)
{
	return with_hits && !dso__hit(dso);
}

static int perf_session__list_build_ids(bool force, bool with_hits)
{
	struct perf_session *session;
	struct perf_data data = {
		.path  = input_name,
		.mode  = PERF_DATA_MODE_READ,
		.force = force,
	};
	struct perf_tool build_id__mark_dso_hit_ops;

	symbol__elf_init();
	/*
	 * See if this is an ELF file first:

Annotation

Implementation Notes