path: root/Documentation/perf_counter/builtin-report.c

/*
 * builtin-report.c
 *
 * Builtin report command: Analyze the perf.data input file,
 * look up and read DSOs and symbol information and display
 * a histogram of results, along various sorting keys.
 */
#include "builtin.h"

#include "util/util.h"

#include "util/list.h"
#include "util/cache.h"
#include "util/rbtree.h"
#include "util/symbol.h"
#include "util/string.h"

#include "perf.h"

#include "util/parse-options.h"
#include "util/parse-events.h"

#define SHOW_KERNEL	1
#define SHOW_USER	2
#define SHOW_HV		4

static char		const *input_name = "perf.data";
static char		*vmlinux = NULL;
static char		*sort_order = "comm,dso";
static int		input;
static int		show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;

static int		dump_trace = 0;
#define dprintf(x...)	do { if (dump_trace) printf(x); } while (0)

static int		verbose;
static int		full_paths;

static unsigned long	page_size;
static unsigned long	mmap_window = 32;

const char *perf_event_names[] = {
	[PERF_EVENT_MMAP]   = " PERF_EVENT_MMAP",
	[PERF_EVENT_MUNMAP] = " PERF_EVENT_MUNMAP",
	[PERF_EVENT_COMM]   = " PERF_EVENT_COMM",
};

struct ip_event {
	struct perf_event_header header;
	__u64 ip;
	__u32 pid, tid;
};

struct mmap_event {
	struct perf_event_header header;
	__u32 pid, tid;
	__u64 start;
	__u64 len;
	__u64 pgoff;
	char filename[PATH_MAX];
};

struct comm_event {
	struct perf_event_header header;
	__u32 pid, tid;
	char comm[16];
};

typedef union event_union {
	struct perf_event_header header;
	struct ip_event ip;
	struct mmap_event mmap;
	struct comm_event comm;
} event_t;

static LIST_HEAD(dsos);
static struct dso *kernel_dso;

static void dsos__add(struct dso *dso)
{
	list_add_tail(&dso->node, &dsos);
}

static struct dso *dsos__find(const char *name)
{
	struct dso *pos;

	list_for_each_entry(pos, &dsos, node)
		if (strcmp(pos->name, name) == 0)
			return pos;
	return NULL;
}

static struct dso *dsos__findnew(const char *name)
{
	struct dso *dso = dsos__find(name);
	int nr;

	if (dso)
		return dso;

	dso = dso__new(name, 0);
	if (!dso)
		goto out_delete_dso;

	nr = dso__load(dso, NULL);
	if (nr < 0) {
		fprintf(stderr, "Failed to open: %s\n", name);
		goto out_delete_dso;
	}
	if (!nr && verbose) {
		fprintf(stderr,
		"No symbols found in: %s, maybe install a debug package?\n",
				name);
	}

	dsos__add(dso);

	return dso;

out_delete_dso:
	dso__delete(dso);
	return NULL;
}

static void dsos__fprintf(FILE *fp)
{
	struct dso *pos;

	list_for_each_entry(pos, &dsos, node)
		dso__fprintf(pos, fp);
}

static int load_kernel(void)
{
	int err;

	kernel_dso = dso__new("[kernel]", 0);
	if (!kernel_dso)
		return -1;

	err = dso__load_kernel(kernel_dso, vmlinux, NULL);
	if (err) {
		dso__delete(kernel_dso);
		kernel_dso = NULL;
	} else
		dsos__add(kernel_dso);

	return err;
}

static char __cwd[PATH_MAX];
static char *c