WSL2-Linux-Kernel/tools/perf/builtin-report.c

1727 строки
37 KiB
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/color.h"
#include <linux/list.h>
#include "util/cache.h"
#include <linux/rbtree.h>
#include "util/symbol.h"
#include "util/string.h"
#include "util/callchain.h"
#include "util/strlist.h"
#include "util/values.h"
#include "perf.h"
#include "util/debug.h"
#include "util/header.h"
#include "util/parse-options.h"
#include "util/parse-events.h"
#include "util/thread.h"
static char const *input_name = "perf.data";
static char default_sort_order[] = "comm,dso,symbol";
static char *sort_order = default_sort_order;
static char *dso_list_str, *comm_list_str, *sym_list_str,
*col_width_list_str;
static struct strlist *dso_list, *comm_list, *sym_list;
static char *field_sep;
static int force;
static int input;
static int show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;
static int full_paths;
static int show_nr_samples;
static int show_threads;
static struct perf_read_values show_threads_values;
static char default_pretty_printing_style[] = "normal";
static char *pretty_printing_style = default_pretty_printing_style;
static unsigned long page_size;
static unsigned long mmap_window = 32;
static char default_parent_pattern[] = "^sys_|^do_page_fault";
static char *parent_pattern = default_parent_pattern;
static regex_t parent_regex;
static int exclude_other = 1;
static char callchain_default_opt[] = "fractal,0.5";
static int callchain;
static char __cwd[PATH_MAX];
static char *cwd = __cwd;
static int cwdlen;
static struct rb_root threads;
static struct thread *last_match;
static struct perf_header *header;
static
struct callchain_param callchain_param = {
.mode = CHAIN_GRAPH_REL,
.min_percent = 0.5
};
static u64 sample_type;
static int repsep_fprintf(FILE *fp, const char *fmt, ...)
{
int n;
va_list ap;
va_start(ap, fmt);
if (!field_sep)
n = vfprintf(fp, fmt, ap);
else {
char *bf = NULL;
n = vasprintf(&bf, fmt, ap);
if (n > 0) {
char *sep = bf;
while (1) {
sep = strchr(sep, *field_sep);
if (sep == NULL)
break;
*sep = '.';
}
}
fputs(bf, fp);
free(bf);
}
va_end(ap);
return n;
}
static unsigned int dsos__col_width,
comms__col_width,
threads__col_width;
/*
* histogram, sorted on item, collects counts
*/
static struct rb_root hist;
struct hist_entry {
struct rb_node rb_node;
struct thread *thread;
struct map *map;
struct dso *dso;
struct symbol *sym;
struct symbol *parent;
u64 ip;
char level;
struct callchain_node callchain;
struct rb_root sorted_chain;
u64 count;
};
/*
* configurable sorting bits
*/
struct sort_entry {
struct list_head list;
const char *header;
int64_t (*cmp)(struct hist_entry *, struct hist_entry *);
int64_t (*collapse)(struct hist_entry *, struct hist_entry *);
size_t (*print)(FILE *fp, struct hist_entry *, unsigned int width);
unsigned int *width;
bool elide;
};
static int64_t cmp_null(void *l, void *r)
{
if (!l && !r)
return 0;
else if (!l)
return -1;
else
return 1;
}
/* --sort pid */
static int64_t
sort__thread_cmp(struct hist_entry *left, struct hist_entry *right)
{
return right->thread->pid - left->thread->pid;
}
static size_t
sort__thread_print(FILE *fp, struct hist_entry *self, unsigned int width)
{
return repsep_fprintf(fp, "%*s:%5d", width - 6,
self->thread->comm ?: "", self->thread->pid);
}
static struct sort_entry sort_thread = {
.header = "Command: Pid",
.cmp = sort__thread_cmp,
.print = sort__thread_print,
.width = &threads__col_width,
};
/* --sort comm */
static int64_t
sort__comm_cmp(struct hist_entry *left, struct hist_entry *right)
{
return right->thread->pid - left->thread->pid;
}
static int64_t
sort__comm_collapse(struct hist_entry *left, struct hist_entry *right)
{
char *comm_l = left->thread->comm;
char *comm_r = right->thread->comm;
if (!comm_l || !comm_r)
return cmp_null(comm_l, comm_r);
return strcmp(comm_l, comm_r);
}
static size_t
sort__comm_print(FILE *fp, struct hist_entry *self, unsigned int width)
{
return repsep_fprintf(fp, "%*s", width, self->thread->comm);
}
static struct sort_entry sort_comm = {
.header = "Command",
.cmp = sort__comm_cmp,
.collapse = sort__comm_collapse,
.print = sort__comm_print,
.width = &comms__col_width,
};
/* --sort dso */
static int64_t
sort__dso_cmp(struct hist_entry *left, struct hist_entry *right)
{
struct dso *dso_l = left->dso;
struct dso *dso_r = right->dso;
if (!dso_l || !dso_r)
return cmp_null(dso_l, dso_r);
return strcmp(dso_l->name, dso_r->name);
}
static size_t
sort__dso_print(FILE *fp, struct hist_entry *self, unsigned int width)
{
if (self->dso)
return repsep_fprintf(fp, "%-*s", width, self->dso->name);
return repsep_fprintf(fp, "%*llx", width, (u64)self->ip);
}
static struct sort_entry sort_dso = {
.header = "Shared Object",
.cmp = sort__dso_cmp,
.print = sort__dso_print,
.width = &dsos__col_width,
};
/* --sort symbol */
static int64_t
sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
{
u64 ip_l, ip_r;
if (left->sym == right->sym)
return 0;
ip_l = left->sym ? left->sym->start : left->ip;
ip_r = right->sym ? right->sym->start : right->ip;
return (int64_t)(ip_r - ip_l);
}
static size_t
sort__sym_print(FILE *fp, struct hist_entry *self, unsigned int width __used)
{
size_t ret = 0;
if (verbose)
ret += repsep_fprintf(fp, "%#018llx %c ", (u64)self->ip,
dso__symtab_origin(self->dso));
ret += repsep_fprintf(fp, "[%c] ", self->level);
if (self->sym) {
ret += repsep_fprintf(fp, "%s", self->sym->name);
if (self->sym->module)
ret += repsep_fprintf(fp, "\t[%s]",
self->sym->module->name);
} else {
ret += repsep_fprintf(fp, "%#016llx", (u64)self->ip);
}
return ret;
}
static struct sort_entry sort_sym = {
.header = "Symbol",
.cmp = sort__sym_cmp,
.print = sort__sym_print,
};
/* --sort parent */
static int64_t
sort__parent_cmp(struct hist_entry *left, struct hist_entry *right)
{
struct symbol *sym_l = left->parent;
struct symbol *sym_r = right->parent;
if (!sym_l || !sym_r)
return cmp_null(sym_l, sym_r);
return strcmp(sym_l->name, sym_r->name);
}
static size_t
sort__parent_print(FILE *fp, struct hist_entry *self, unsigned int width)
{
return repsep_fprintf(fp, "%-*s", width,
self->parent ? self->parent->name : "[other]");
}
static unsigned int parent_symbol__col_width;
static struct sort_entry sort_parent = {
.header = "Parent symbol",
.cmp = sort__parent_cmp,
.print = sort__parent_print,
.width = &parent_symbol__col_width,
};
static int sort__need_collapse = 0;
static int sort__has_parent = 0;
struct sort_dimension {
const char *name;
struct sort_entry *entry;
int taken;
};
static struct sort_dimension sort_dimensions[] = {
{ .name = "pid", .entry = &sort_thread, },
{ .name = "comm", .entry = &sort_comm, },
{ .name = "dso", .entry = &sort_dso, },
{ .name = "symbol", .entry = &sort_sym, },
{ .name = "parent", .entry = &sort_parent, },
};
static LIST_HEAD(hist_entry__sort_list);
static int sort_dimension__add(const char *tok)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(sort_dimensions); i++) {
struct sort_dimension *sd = &sort_dimensions[i];
if (sd->taken)
continue;
if (strncasecmp(tok, sd->name, strlen(tok)))
continue;
if (sd->entry->collapse)
sort__need_collapse = 1;
if (sd->entry == &sort_parent) {
int ret = regcomp(&parent_regex, parent_pattern, REG_EXTENDED);
if (ret) {
char err[BUFSIZ];
regerror(ret, &parent_regex, err, sizeof(err));
fprintf(stderr, "Invalid regex: %s\n%s",
parent_pattern, err);
exit(-1);
}
sort__has_parent = 1;
}
list_add_tail(&sd->entry->list, &hist_entry__sort_list);
sd->taken = 1;
return 0;
}
return -ESRCH;
}
static int64_t
hist_entry__cmp(struct hist_entry *left, struct hist_entry *right)
{
struct sort_entry *se;
int64_t cmp = 0;
list_for_each_entry(se, &hist_entry__sort_list, list) {
cmp = se->cmp(left, right);
if (cmp)
break;
}
return cmp;
}
static int64_t
hist_entry__collapse(struct hist_entry *left, struct hist_entry *right)
{
struct sort_entry *se;
int64_t cmp = 0;
list_for_each_entry(se, &hist_entry__sort_list, list) {
int64_t (*f)(struct hist_entry *, struct hist_entry *);
f = se->collapse ?: se->cmp;
cmp = f(left, right);
if (cmp)
break;
}
return cmp;
}
static size_t ipchain__fprintf_graph_line(FILE *fp, int depth, int depth_mask)
{
int i;
size_t ret = 0;
ret += fprintf(fp, "%s", " ");
for (i = 0; i < depth; i++)
if (depth_mask & (1 << i))
ret += fprintf(fp, "| ");
else
ret += fprintf(fp, " ");
ret += fprintf(fp, "\n");
return ret;
}
static size_t
ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain, int depth,
int depth_mask, int count, u64 total_samples,
int hits)
{
int i;
size_t ret = 0;
ret += fprintf(fp, "%s", " ");
for (i = 0; i < depth; i++) {
if (depth_mask & (1 << i))
ret += fprintf(fp, "|");
else
ret += fprintf(fp, " ");
if (!count && i == depth - 1) {
double percent;
percent = hits * 100.0 / total_samples;
ret += percent_color_fprintf(fp, "--%2.2f%%-- ", percent);
} else
ret += fprintf(fp, "%s", " ");
}
if (chain->sym)
ret += fprintf(fp, "%s\n", chain->sym->name);
else
ret += fprintf(fp, "%p\n", (void *)(long)chain->ip);
return ret;
}
static struct symbol *rem_sq_bracket;
static struct callchain_list rem_hits;
static void init_rem_hits(void)
{
rem_sq_bracket = malloc(sizeof(*rem_sq_bracket) + 6);
if (!rem_sq_bracket) {
fprintf(stderr, "Not enough memory to display remaining hits\n");
return;
}
strcpy(rem_sq_bracket->name, "[...]");
rem_hits.sym = rem_sq_bracket;
}
static size_t
callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
u64 total_samples, int depth, int depth_mask)
{
struct rb_node *node, *next;
struct callchain_node *child;
struct callchain_list *chain;
int new_depth_mask = depth_mask;
u64 new_total;
u64 remaining;
size_t ret = 0;
int i;
if (callchain_param.mode == CHAIN_GRAPH_REL)
new_total = self->children_hit;
else
new_total = total_samples;
remaining = new_total;
node = rb_first(&self->rb_root);
while (node) {
u64 cumul;
child = rb_entry(node, struct callchain_node, rb_node);
cumul = cumul_hits(child);
remaining -= cumul;
/*
* The depth mask manages the output of pipes that show
* the depth. We don't want to keep the pipes of the current
* level for the last child of this depth.
* Except if we have remaining filtered hits. They will
* supersede the last child
*/
next = rb_next(node);
if (!next && (callchain_param.mode != CHAIN_GRAPH_REL || !remaining))
new_depth_mask &= ~(1 << (depth - 1));
/*
* But we keep the older depth mask for the line seperator
* to keep the level link until we reach the last child
*/
ret += ipchain__fprintf_graph_line(fp, depth, depth_mask);
i = 0;
list_for_each_entry(chain, &child->val, list) {
if (chain->ip >= PERF_CONTEXT_MAX)
continue;
ret += ipchain__fprintf_graph(fp, chain, depth,
new_depth_mask, i++,
new_total,
cumul);
}
ret += callchain__fprintf_graph(fp, child, new_total,
depth + 1,
new_depth_mask | (1 << depth));
node = next;
}
if (callchain_param.mode == CHAIN_GRAPH_REL &&
remaining && remaining != new_total) {
if (!rem_sq_bracket)
return ret;
new_depth_mask &= ~(1 << (depth - 1));
ret += ipchain__fprintf_graph(fp, &rem_hits, depth,
new_depth_mask, 0, new_total,
remaining);
}
return ret;
}
static size_t
callchain__fprintf_flat(FILE *fp, struct callchain_node *self,
u64 total_samples)
{
struct callchain_list *chain;
size_t ret = 0;
if (!self)
return 0;
ret += callchain__fprintf_flat(fp, self->parent, total_samples);
list_for_each_entry(chain, &self->val, list) {
if (chain->ip >= PERF_CONTEXT_MAX)
continue;
if (chain->sym)
ret += fprintf(fp, " %s\n", chain->sym->name);
else
ret += fprintf(fp, " %p\n",
(void *)(long)chain->ip);
}
return ret;
}
static size_t
hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self,
u64 total_samples)
{
struct rb_node *rb_node;
struct callchain_node *chain;
size_t ret = 0;
rb_node = rb_first(&self->sorted_chain);
while (rb_node) {
double percent;
chain = rb_entry(rb_node, struct callchain_node, rb_node);
percent = chain->hit * 100.0 / total_samples;
switch (callchain_param.mode) {
case CHAIN_FLAT:
ret += percent_color_fprintf(fp, " %6.2f%%\n",
percent);
ret += callchain__fprintf_flat(fp, chain, total_samples);
break;
case CHAIN_GRAPH_ABS: /* Falldown */
case CHAIN_GRAPH_REL:
ret += callchain__fprintf_graph(fp, chain,
total_samples, 1, 1);
case CHAIN_NONE:
default:
break;
}
ret += fprintf(fp, "\n");
rb_node = rb_next(rb_node);
}
return ret;
}
static size_t
hist_entry__fprintf(FILE *fp, struct hist_entry *self, u64 total_samples)
{
struct sort_entry *se;
size_t ret;
if (exclude_other && !self->parent)
return 0;
if (total_samples)
ret = percent_color_fprintf(fp,
field_sep ? "%.2f" : " %6.2f%%",
(self->count * 100.0) / total_samples);
else
ret = fprintf(fp, field_sep ? "%lld" : "%12lld ", self->count);
if (show_nr_samples) {
if (field_sep)
fprintf(fp, "%c%lld", *field_sep, self->count);
else
fprintf(fp, "%11lld", self->count);
}
list_for_each_entry(se, &hist_entry__sort_list, list) {
if (se->elide)
continue;
fprintf(fp, "%s", field_sep ?: " ");
ret += se->print(fp, self, se->width ? *se->width : 0);
}
ret += fprintf(fp, "\n");
if (callchain)
hist_entry_callchain__fprintf(fp, self, total_samples);
return ret;
}
/*
*
*/
static void dso__calc_col_width(struct dso *self)
{
if (!col_width_list_str && !field_sep &&
(!dso_list || strlist__has_entry(dso_list, self->name))) {
unsigned int slen = strlen(self->name);
if (slen > dsos__col_width)
dsos__col_width = slen;
}
self->slen_calculated = 1;
}
static void thread__comm_adjust(struct thread *self)
{
char *comm = self->comm;
if (!col_width_list_str && !field_sep &&
(!comm_list || strlist__has_entry(comm_list, comm))) {
unsigned int slen = strlen(comm);
if (slen > comms__col_width) {
comms__col_width = slen;
threads__col_width = slen + 6;
}
}
}
static int thread__set_comm_adjust(struct thread *self, const char *comm)
{
int ret = thread__set_comm(self, comm);
if (ret)
return ret;
thread__comm_adjust(self);
return 0;
}
static struct symbol *
resolve_symbol(struct thread *thread, struct map **mapp,
struct dso **dsop, u64 *ipp)
{
struct dso *dso = dsop ? *dsop : NULL;
struct map *map = mapp ? *mapp : NULL;
u64 ip = *ipp;
if (!thread)
return NULL;
if (dso)
goto got_dso;
if (map)
goto got_map;
map = thread__find_map(thread, ip);
if (map != NULL) {
/*
* We have to do this here as we may have a dso
* with no symbol hit that has a name longer than
* the ones with symbols sampled.
*/
if (!sort_dso.elide && !map->dso->slen_calculated)
dso__calc_col_width(map->dso);
if (mapp)
*mapp = map;
got_map:
ip = map->map_ip(map, ip);
dso = map->dso;
} else {
/*
* If this is outside of all known maps,
* and is a negative address, try to look it
* up in the kernel dso, as it might be a
* vsyscall (which executes in user-mode):
*/
if ((long long)ip < 0)
dso = kernel_dso;
}
dump_printf(" ...... dso: %s\n", dso ? dso->name : "<not found>");
dump_printf(" ...... map: %Lx -> %Lx\n", *ipp, ip);
*ipp = ip;
if (dsop)
*dsop = dso;
if (!dso)
return NULL;
got_dso:
return dso->find_symbol(dso, ip);
}
static int call__match(struct symbol *sym)
{
if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0))
return 1;
return 0;
}
static struct symbol **
resolve_callchain(struct thread *thread, struct map *map __used,
struct ip_callchain *chain, struct hist_entry *entry)
{
u64 context = PERF_CONTEXT_MAX;
struct symbol **syms = NULL;
unsigned int i;
if (callchain) {
syms = calloc(chain->nr, sizeof(*syms));
if (!syms) {
fprintf(stderr, "Can't allocate memory for symbols\n");
exit(-1);
}
}
for (i = 0; i < chain->nr; i++) {
u64 ip = chain->ips[i];
struct dso *dso = NULL;
struct symbol *sym;
if (ip >= PERF_CONTEXT_MAX) {
context = ip;
continue;
}
switch (context) {
case PERF_CONTEXT_HV:
dso = hypervisor_dso;
break;
case PERF_CONTEXT_KERNEL:
dso = kernel_dso;
break;
default:
break;
}
sym = resolve_symbol(thread, NULL, &dso, &ip);
if (sym) {
if (sort__has_parent && call__match(sym) &&
!entry->parent)
entry->parent = sym;
if (!callchain)
break;
syms[i] = sym;
}
}
return syms;
}
/*
* collect histogram counts
*/
static int
hist_entry__add(struct thread *thread, struct map *map, struct dso *dso,
struct symbol *sym, u64 ip, struct ip_callchain *chain,
char level, u64 count)
{
struct rb_node **p = &hist.rb_node;
struct rb_node *parent = NULL;
struct hist_entry *he;
struct symbol **syms = NULL;
struct hist_entry entry = {
.thread = thread,
.map = map,
.dso = dso,
.sym = sym,
.ip = ip,
.level = level,
.count = count,
.parent = NULL,
.sorted_chain = RB_ROOT
};
int cmp;
if ((sort__has_parent || callchain) && chain)
syms = resolve_callchain(thread, map, chain, &entry);
while (*p != NULL) {
parent = *p;
he = rb_entry(parent, struct hist_entry, rb_node);
cmp = hist_entry__cmp(&entry, he);
if (!cmp) {
he->count += count;
if (callchain) {
append_chain(&he->callchain, chain, syms);
free(syms);
}
return 0;
}
if (cmp < 0)
p = &(*p)->rb_left;
else
p = &(*p)->rb_right;
}
he = malloc(sizeof(*he));
if (!he)
return -ENOMEM;
*he = entry;
if (callchain) {
callchain_init(&he->callchain);
append_chain(&he->callchain, chain, syms);
free(syms);
}
rb_link_node(&he->rb_node, parent, p);
rb_insert_color(&he->rb_node, &hist);
return 0;
}
static void hist_entry__free(struct hist_entry *he)
{
free(he);
}
/*
* collapse the histogram
*/
static struct rb_root collapse_hists;
static void collapse__insert_entry(struct hist_entry *he)
{
struct rb_node **p = &collapse_hists.rb_node;
struct rb_node *parent = NULL;
struct hist_entry *iter;
int64_t cmp;
while (*p != NULL) {
parent = *p;
iter = rb_entry(parent, struct hist_entry, rb_node);
cmp = hist_entry__collapse(iter, he);
if (!cmp) {
iter->count += he->count;
hist_entry__free(he);
return;
}
if (cmp < 0)
p = &(*p)->rb_left;
else
p = &(*p)->rb_right;
}
rb_link_node(&he->rb_node, parent, p);
rb_insert_color(&he->rb_node, &collapse_hists);
}
static void collapse__resort(void)
{
struct rb_node *next;
struct hist_entry *n;
if (!sort__need_collapse)
return;
next = rb_first(&hist);
while (next) {
n = rb_entry(next, struct hist_entry, rb_node);
next = rb_next(&n->rb_node);
rb_erase(&n->rb_node, &hist);
collapse__insert_entry(n);
}
}
/*
* reverse the map, sort on count.
*/
static struct rb_root output_hists;
static void output__insert_entry(struct hist_entry *he, u64 min_callchain_hits)
{
struct rb_node **p = &output_hists.rb_node;
struct rb_node *parent = NULL;
struct hist_entry *iter;
if (callchain)
callchain_param.sort(&he->sorted_chain, &he->callchain,
min_callchain_hits, &callchain_param);
while (*p != NULL) {
parent = *p;
iter = rb_entry(parent, struct hist_entry, rb_node);
if (he->count > iter->count)
p = &(*p)->rb_left;
else
p = &(*p)->rb_right;
}
rb_link_node(&he->rb_node, parent, p);
rb_insert_color(&he->rb_node, &output_hists);
}
static void output__resort(u64 total_samples)
{
struct rb_node *next;
struct hist_entry *n;
struct rb_root *tree = &hist;
u64 min_callchain_hits;
min_callchain_hits = total_samples * (callchain_param.min_percent / 100);
if (sort__need_collapse)
tree = &collapse_hists;
next = rb_first(tree);
while (next) {
n = rb_entry(next, struct hist_entry, rb_node);
next = rb_next(&n->rb_node);
rb_erase(&n->rb_node, tree);
output__insert_entry(n, min_callchain_hits);
}
}
static size_t output__fprintf(FILE *fp, u64 total_samples)
{
struct hist_entry *pos;
struct sort_entry *se;
struct rb_node *nd;
size_t ret = 0;
unsigned int width;
char *col_width = col_width_list_str;
int raw_printing_style;
raw_printing_style = !strcmp(pretty_printing_style, "raw");
init_rem_hits();
fprintf(fp, "# Samples: %Ld\n", (u64)total_samples);
fprintf(fp, "#\n");
fprintf(fp, "# Overhead");
if (show_nr_samples) {
if (field_sep)
fprintf(fp, "%cSamples", *field_sep);
else
fputs(" Samples ", fp);
}
list_for_each_entry(se, &hist_entry__sort_list, list) {
if (se->elide)
continue;
if (field_sep) {
fprintf(fp, "%c%s", *field_sep, se->header);
continue;
}
width = strlen(se->header);
if (se->width) {
if (col_width_list_str) {
if (col_width) {
*se->width = atoi(col_width);
col_width = strchr(col_width, ',');
if (col_width)
++col_width;
}
}
width = *se->width = max(*se->width, width);
}
fprintf(fp, " %*s", width, se->header);
}
fprintf(fp, "\n");
if (field_sep)
goto print_entries;
fprintf(fp, "# ........");
if (show_nr_samples)
fprintf(fp, " ..........");
list_for_each_entry(se, &hist_entry__sort_list, list) {
unsigned int i;
if (se->elide)
continue;
fprintf(fp, " ");
if (se->width)
width = *se->width;
else
width = strlen(se->header);
for (i = 0; i < width; i++)
fprintf(fp, ".");
}
fprintf(fp, "\n");
fprintf(fp, "#\n");
print_entries:
for (nd = rb_first(&output_hists); nd; nd = rb_next(nd)) {
pos = rb_entry(nd, struct hist_entry, rb_node);
ret += hist_entry__fprintf(fp, pos, total_samples);
}
if (sort_order == default_sort_order &&
parent_pattern == default_parent_pattern) {
fprintf(fp, "#\n");
fprintf(fp, "# (For a higher level overview, try: perf report --sort comm,dso)\n");
fprintf(fp, "#\n");
}
fprintf(fp, "\n");
free(rem_sq_bracket);
if (show_threads)
perf_read_values_display(fp, &show_threads_values,
raw_printing_style);
return ret;
}
static unsigned long total = 0,
total_mmap = 0,
total_comm = 0,
total_fork = 0,
total_unknown = 0,
total_lost = 0;
static int validate_chain(struct ip_callchain *chain, event_t *event)
{
unsigned int chain_size;
chain_size = event->header.size;
chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
if (chain->nr*sizeof(u64) > chain_size)
return -1;
return 0;
}
static int
process_sample_event(event_t *event, unsigned long offset, unsigned long head)
{
char level;
int show = 0;
struct dso *dso = NULL;
struct thread *thread;
u64 ip = event->ip.ip;
u64 period = 1;
struct map *map = NULL;
void *more_data = event->ip.__more_data;
struct ip_callchain *chain = NULL;
int cpumode;
thread = threads__findnew(event->ip.pid, &threads, &last_match);
if (sample_type & PERF_SAMPLE_PERIOD) {
period = *(u64 *)more_data;
more_data += sizeof(u64);
}
dump_printf("%p [%p]: PERF_EVENT_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n",
(void *)(offset + head),
(void *)(long)(event->header.size),
event->header.misc,
event->ip.pid, event->ip.tid,
(void *)(long)ip,
(long long)period);
if (sample_type & PERF_SAMPLE_CALLCHAIN) {
unsigned int i;
chain = (void *)more_data;
dump_printf("... chain: nr:%Lu\n", chain->nr);
if (validate_chain(chain, event) < 0) {
eprintf("call-chain problem with event, skipping it.\n");
return 0;
}
if (dump_trace) {
for (i = 0; i < chain->nr; i++)
dump_printf("..... %2d: %016Lx\n", i, chain->ips[i]);
}
}
dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
if (thread == NULL) {
eprintf("problem processing %d event, skipping it.\n",
event->header.type);
return -1;
}
if (comm_list && !strlist__has_entry(comm_list, thread->comm))
return 0;
cpumode = event->header.misc & PERF_EVENT_MISC_CPUMODE_MASK;
if (cpumode == PERF_EVENT_MISC_KERNEL) {
show = SHOW_KERNEL;
level = 'k';
dso = kernel_dso;
dump_printf(" ...... dso: %s\n", dso->name);
} else if (cpumode == PERF_EVENT_MISC_USER) {
show = SHOW_USER;
level = '.';
} else {
show = SHOW_HV;
level = 'H';
dso = hypervisor_dso;
dump_printf(" ...... dso: [hypervisor]\n");
}
if (show & show_mask) {
struct symbol *sym = resolve_symbol(thread, &map, &dso, &ip);
if (dso_list && (!dso || !dso->name ||
!strlist__has_entry(dso_list, dso->name)))
return 0;
if (sym_list && (!sym || !strlist__has_entry(sym_list, sym->name)))
return 0;
if (hist_entry__add(thread, map, dso, sym, ip, chain, level, period)) {
eprintf("problem incrementing symbol count, skipping event\n");
return -1;
}
}
total += period;
return 0;
}
static int
process_mmap_event(event_t *event, unsigned long offset, unsigned long head)
{
struct thread *thread;
struct map *map = map__new(&event->mmap, cwd, cwdlen);
thread = threads__findnew(event->mmap.pid, &threads, &last_match);
dump_printf("%p [%p]: PERF_EVENT_MMAP %d/%d: [%p(%p) @ %p]: %s\n",
(void *)(offset + head),
(void *)(long)(event->header.size),
event->mmap.pid,
event->mmap.tid,
(void *)(long)event->mmap.start,
(void *)(long)event->mmap.len,
(void *)(long)event->mmap.pgoff,
event->mmap.filename);
if (thread == NULL || map == NULL) {
dump_printf("problem processing PERF_EVENT_MMAP, skipping event.\n");
return 0;
}
thread__insert_map(thread, map);
total_mmap++;
return 0;
}
static int
process_comm_event(event_t *event, unsigned long offset, unsigned long head)
{
struct thread *thread;
thread = threads__findnew(event->comm.pid, &threads, &last_match);
dump_printf("%p [%p]: PERF_EVENT_COMM: %s:%d\n",
(void *)(offset + head),
(void *)(long)(event->header.size),
event->comm.comm, event->comm.pid);
if (thread == NULL ||
thread__set_comm_adjust(thread, event->comm.comm)) {
dump_printf("problem processing PERF_EVENT_COMM, skipping event.\n");
return -1;
}
total_comm++;
return 0;
}
static int
process_task_event(event_t *event, unsigned long offset, unsigned long head)
{
struct thread *thread;
struct thread *parent;
thread = threads__findnew(event->fork.pid, &threads, &last_match);
parent = threads__findnew(event->fork.ppid, &threads, &last_match);
dump_printf("%p [%p]: PERF_EVENT_%s: (%d:%d):(%d:%d)\n",
(void *)(offset + head),
(void *)(long)(event->header.size),
event->header.type == PERF_EVENT_FORK ? "FORK" : "EXIT",
event->fork.pid, event->fork.tid,
event->fork.ppid, event->fork.ptid);
/*
* A thread clone will have the same PID for both
* parent and child.
*/
if (thread == parent)
return 0;
if (event->header.type == PERF_EVENT_EXIT)
return 0;
if (!thread || !parent || thread__fork(thread, parent)) {
dump_printf("problem processing PERF_EVENT_FORK, skipping event.\n");
return -1;
}
total_fork++;
return 0;
}
static int
process_lost_event(event_t *event, unsigned long offset, unsigned long head)
{
dump_printf("%p [%p]: PERF_EVENT_LOST: id:%Ld: lost:%Ld\n",
(void *)(offset + head),
(void *)(long)(event->header.size),
event->lost.id,
event->lost.lost);
total_lost += event->lost.lost;
return 0;
}
static int
process_read_event(event_t *event, unsigned long offset, unsigned long head)
{
struct perf_counter_attr *attr;
attr = perf_header__find_attr(event->read.id, header);
if (show_threads) {
const char *name = attr ? __event_name(attr->type, attr->config)
: "unknown";
perf_read_values_add_value(&show_threads_values,
event->read.pid, event->read.tid,
event->read.id,
name,
event->read.value);
}
dump_printf("%p [%p]: PERF_EVENT_READ: %d %d %s %Lu\n",
(void *)(offset + head),
(void *)(long)(event->header.size),
event->read.pid,
event->read.tid,
attr ? __event_name(attr->type, attr->config)
: "FAIL",
event->read.value);
return 0;
}
static int
process_event(event_t *event, unsigned long offset, unsigned long head)
{
trace_event(event);
switch (event->header.type) {
case PERF_EVENT_SAMPLE:
return process_sample_event(event, offset, head);
case PERF_EVENT_MMAP:
return process_mmap_event(event, offset, head);
case PERF_EVENT_COMM:
return process_comm_event(event, offset, head);
case PERF_EVENT_FORK:
case PERF_EVENT_EXIT:
return process_task_event(event, offset, head);
case PERF_EVENT_LOST:
return process_lost_event(event, offset, head);
case PERF_EVENT_READ:
return process_read_event(event, offset, head);
/*
* We dont process them right now but they are fine:
*/
case PERF_EVENT_THROTTLE:
case PERF_EVENT_UNTHROTTLE:
return 0;
default:
return -1;
}
return 0;
}
static int __cmd_report(void)
{
int ret, rc = EXIT_FAILURE;
unsigned long offset = 0;
unsigned long head, shift;
struct stat input_stat;
struct thread *idle;
event_t *event;
uint32_t size;
char *buf;
idle = register_idle_thread(&threads, &last_match);
thread__comm_adjust(idle);
if (show_threads)
perf_read_values_init(&show_threads_values);
input = open(input_name, O_RDONLY);
if (input < 0) {
fprintf(stderr, " failed to open file: %s", input_name);
if (!strcmp(input_name, "perf.data"))
fprintf(stderr, " (try 'perf record' first)");
fprintf(stderr, "\n");
exit(-1);
}
ret = fstat(input, &input_stat);
if (ret < 0) {
perror("failed to stat file");
exit(-1);
}
if (!force && input_stat.st_uid && (input_stat.st_uid != geteuid())) {
fprintf(stderr, "file: %s not owned by current user or root\n", input_name);
exit(-1);
}
if (!input_stat.st_size) {
fprintf(stderr, "zero-sized file, nothing to do!\n");
exit(0);
}
header = perf_header__read(input);
head = header->data_offset;
sample_type = perf_header__sample_type(header);
if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
if (sort__has_parent) {
fprintf(stderr, "selected --sort parent, but no"
" callchain data. Did you call"
" perf record without -g?\n");
exit(-1);
}
if (callchain) {
fprintf(stderr, "selected -g but no callchain data."
" Did you call perf record without"
" -g?\n");
exit(-1);
}
} else if (callchain_param.mode != CHAIN_NONE && !callchain) {
callchain = 1;
if (register_callchain_param(&callchain_param) < 0) {
fprintf(stderr, "Can't register callchain"
" params\n");
exit(-1);
}
}
if (load_kernel() < 0) {
perror("failed to load kernel symbols");
return EXIT_FAILURE;
}
if (!full_paths) {
if (getcwd(__cwd, sizeof(__cwd)) == NULL) {
perror("failed to get the current directory");
return EXIT_FAILURE;
}
cwdlen = strlen(cwd);
} else {
cwd = NULL;
cwdlen = 0;
}
shift = page_size * (head / page_size);
offset += shift;
head -= shift;
remap:
buf = (char *)mmap(NULL, page_size * mmap_window, PROT_READ,
MAP_SHARED, input, offset);
if (buf == MAP_FAILED) {
perror("failed to mmap file");
exit(-1);
}
more:
event = (event_t *)(buf + head);
size = event->header.size;
if (!size)
size = 8;
if (head + event->header.size >= page_size * mmap_window) {
int munmap_ret;
shift = page_size * (head / page_size);
munmap_ret = munmap(buf, page_size * mmap_window);
assert(munmap_ret == 0);
offset += shift;
head -= shift;
goto remap;
}
size = event->header.size;
dump_printf("\n%p [%p]: event: %d\n",
(void *)(offset + head),
(void *)(long)event->header.size,
event->header.type);
if (!size || process_event(event, offset, head) < 0) {
dump_printf("%p [%p]: skipping unknown header type: %d\n",
(void *)(offset + head),
(void *)(long)(event->header.size),
event->header.type);
total_unknown++;
/*
* assume we lost track of the stream, check alignment, and
* increment a single u64 in the hope to catch on again 'soon'.
*/
if (unlikely(head & 7))
head &= ~7ULL;
size = 8;
}
head += size;
if (offset + head >= header->data_offset + header->data_size)
goto done;
if (offset + head < (unsigned long)input_stat.st_size)
goto more;
done:
rc = EXIT_SUCCESS;
close(input);
dump_printf(" IP events: %10ld\n", total);
dump_printf(" mmap events: %10ld\n", total_mmap);
dump_printf(" comm events: %10ld\n", total_comm);
dump_printf(" fork events: %10ld\n", total_fork);
dump_printf(" lost events: %10ld\n", total_lost);
dump_printf(" unknown events: %10ld\n", total_unknown);
if (dump_trace)
return 0;
if (verbose >= 3)
threads__fprintf(stdout, &threads);
if (verbose >= 2)
dsos__fprintf(stdout);
collapse__resort();
output__resort(total);
output__fprintf(stdout, total);
if (show_threads)
perf_read_values_destroy(&show_threads_values);
return rc;
}
static int
parse_callchain_opt(const struct option *opt __used, const char *arg,
int unset __used)
{
char *tok;
char *endptr;
callchain = 1;
if (!arg)
return 0;
tok = strtok((char *)arg, ",");
if (!tok)
return -1;
/* get the output mode */
if (!strncmp(tok, "graph", strlen(arg)))
callchain_param.mode = CHAIN_GRAPH_ABS;
else if (!strncmp(tok, "flat", strlen(arg)))
callchain_param.mode = CHAIN_FLAT;
else if (!strncmp(tok, "fractal", strlen(arg)))
callchain_param.mode = CHAIN_GRAPH_REL;
else if (!strncmp(tok, "none", strlen(arg))) {
callchain_param.mode = CHAIN_NONE;
callchain = 0;
return 0;
}
else
return -1;
/* get the min percentage */
tok = strtok(NULL, ",");
if (!tok)
goto setup;
callchain_param.min_percent = strtod(tok, &endptr);
if (tok == endptr)
return -1;
setup:
if (register_callchain_param(&callchain_param) < 0) {
fprintf(stderr, "Can't register callchain params\n");
return -1;
}
return 0;
}
static const char * const report_usage[] = {
"perf report [<options>] <command>",
NULL
};
static const struct option options[] = {
OPT_STRING('i', "input", &input_name, "file",
"input file name"),
OPT_BOOLEAN('v', "verbose", &verbose,
"be more verbose (show symbol address, etc)"),
OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
"dump raw trace in ASCII"),
OPT_STRING('k', "vmlinux", &vmlinux_name, "file", "vmlinux pathname"),
OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
OPT_BOOLEAN('m', "modules", &modules,
"load module symbols - WARNING: use only with -k and LIVE kernel"),
OPT_BOOLEAN('n', "show-nr-samples", &show_nr_samples,
"Show a column with the number of samples"),
OPT_BOOLEAN('T', "threads", &show_threads,
"Show per-thread event counters"),
OPT_STRING(0, "pretty", &pretty_printing_style, "key",
"pretty printing style key: normal raw"),
OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
"sort by key(s): pid, comm, dso, symbol, parent"),
OPT_BOOLEAN('P', "full-paths", &full_paths,
"Don't shorten the pathnames taking into account the cwd"),
OPT_STRING('p', "parent", &parent_pattern, "regex",
"regex filter to identify parent, see: '--sort parent'"),
OPT_BOOLEAN('x', "exclude-other", &exclude_other,
"Only display entries with parent-match"),
OPT_CALLBACK_DEFAULT('g', "call-graph", NULL, "output_type,min_percent",
"Display callchains using output_type and min percent threshold. "
"Default: fractal,0.5", &parse_callchain_opt, callchain_default_opt),
OPT_STRING('d', "dsos", &dso_list_str, "dso[,dso...]",
"only consider symbols in these dsos"),
OPT_STRING('C', "comms", &comm_list_str, "comm[,comm...]",
"only consider symbols in these comms"),
OPT_STRING('S', "symbols", &sym_list_str, "symbol[,symbol...]",
"only consider these symbols"),
OPT_STRING('w', "column-widths", &col_width_list_str,
"width[,width...]",
"don't try to adjust column width, use these fixed values"),
OPT_STRING('t', "field-separator", &field_sep, "separator",
"separator for columns, no spaces will be added between "
"columns '.' is reserved."),
OPT_END()
};
static void setup_sorting(void)
{
char *tmp, *tok, *str = strdup(sort_order);
for (tok = strtok_r(str, ", ", &tmp);
tok; tok = strtok_r(NULL, ", ", &tmp)) {
if (sort_dimension__add(tok) < 0) {
error("Unknown --sort key: `%s'", tok);
usage_with_options(report_usage, options);
}
}
free(str);
}
static void setup_list(struct strlist **list, const char *list_str,
struct sort_entry *se, const char *list_name,
FILE *fp)
{
if (list_str) {
*list = strlist__new(true, list_str);
if (!*list) {
fprintf(stderr, "problems parsing %s list\n",
list_name);
exit(129);
}
if (strlist__nr_entries(*list) == 1) {
fprintf(fp, "# %s: %s\n", list_name,
strlist__entry(*list, 0)->s);
se->elide = true;
}
}
}
int cmd_report(int argc, const char **argv, const char *prefix __used)
{
symbol__init();
page_size = getpagesize();
argc = parse_options(argc, argv, options, report_usage, 0);
setup_sorting();
if (parent_pattern != default_parent_pattern) {
sort_dimension__add("parent");
sort_parent.elide = 1;
} else
exclude_other = 0;
/*
* Any (unrecognized) arguments left?
*/
if (argc)
usage_with_options(report_usage, options);
setup_pager();
setup_list(&dso_list, dso_list_str, &sort_dso, "dso", stdout);
setup_list(&comm_list, comm_list_str, &sort_comm, "comm", stdout);
setup_list(&sym_list, sym_list_str, &sort_sym, "symbol", stdout);
if (field_sep && *field_sep == '.') {
fputs("'.' is the only non valid --field-separator argument\n",
stderr);
exit(129);
}
return __cmd_report();
}