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builtin-top.c
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/*
* builtin-top.c
*
* Builtin top command: Display a continuously updated profile of
* any workload, CPU or specific PID.
*
* Copyright (C) 2008, Red Hat Inc, Ingo Molnar <[email protected]>
*
* Improvements and fixes by:
*
* Arjan van de Ven <[email protected]>
* Yanmin Zhang <[email protected]>
* Wu Fengguang <[email protected]>
* Mike Galbraith <[email protected]>
* Paul Mackerras <[email protected]>
*
* Released under the GPL v2. (and only v2, not any later version)
*/
#include "builtin.h"
#include "perf.h"
#include "util/color.h"
#include "util/session.h"
#include "util/symbol.h"
#include "util/thread.h"
#include "util/util.h"
#include <linux/rbtree.h>
#include "util/parse-options.h"
#include "util/parse-events.h"
#include "util/cpumap.h"
#include "util/debug.h"
#include <assert.h>
#include <fcntl.h>
#include <stdio.h>
#include <termios.h>
#include <unistd.h>
#include <errno.h>
#include <time.h>
#include <sched.h>
#include <pthread.h>
#include <sys/syscall.h>
#include <sys/ioctl.h>
#include <sys/poll.h>
#include <sys/prctl.h>
#include <sys/wait.h>
#include <sys/uio.h>
#include <sys/mman.h>
#include <linux/unistd.h>
#include <linux/types.h>
static int *fd[MAX_NR_CPUS][MAX_COUNTERS];
static bool system_wide = false;
static int default_interval = 0;
static int count_filter = 5;
static int print_entries;
static int target_pid = -1;
static int target_tid = -1;
static pid_t *all_tids = NULL;
static int thread_num = 0;
static bool inherit = false;
static int profile_cpu = -1;
static int nr_cpus = 0;
static int realtime_prio = 0;
static bool group = false;
static unsigned int page_size;
static unsigned int mmap_pages = 16;
static int freq = 1000; /* 1 KHz */
static int delay_secs = 2;
static bool zero = false;
static bool dump_symtab = false;
static bool hide_kernel_symbols = false;
static bool hide_user_symbols = false;
static struct winsize winsize;
/*
* Source
*/
struct source_line {
u64 eip;
unsigned long count[MAX_COUNTERS];
char *line;
struct source_line *next;
};
static const char *sym_filter = NULL;
struct sym_entry *sym_filter_entry = NULL;
struct sym_entry *sym_filter_entry_sched = NULL;
static int sym_pcnt_filter = 5;
static int sym_counter = 0;
static int display_weighted = -1;
static const char *cpu_list;
/*
* Symbols
*/
struct sym_entry_source {
struct source_line *source;
struct source_line *lines;
struct source_line **lines_tail;
pthread_mutex_t lock;
};
struct sym_entry {
struct rb_node rb_node;
struct list_head node;
unsigned long snap_count;
double weight;
int skip;
u16 name_len;
u8 origin;
struct map *map;
struct sym_entry_source *src;
unsigned long count[0];
};
/*
* Source functions
*/
static inline struct symbol *sym_entry__symbol(struct sym_entry *self)
{
return ((void *)self) + symbol_conf.priv_size;
}
void get_term_dimensions(struct winsize *ws)
{
char *s = getenv("LINES");
if (s != NULL) {
ws->ws_row = atoi(s);
s = getenv("COLUMNS");
if (s != NULL) {
ws->ws_col = atoi(s);
if (ws->ws_row && ws->ws_col)
return;
}
}
#ifdef TIOCGWINSZ
if (ioctl(1, TIOCGWINSZ, ws) == 0 &&
ws->ws_row && ws->ws_col)
return;
#endif
ws->ws_row = 25;
ws->ws_col = 80;
}
static void update_print_entries(struct winsize *ws)
{
print_entries = ws->ws_row;
if (print_entries > 9)
print_entries -= 9;
}
static void sig_winch_handler(int sig __used)
{
get_term_dimensions(&winsize);
update_print_entries(&winsize);
}
static int parse_source(struct sym_entry *syme)
{
struct symbol *sym;
struct sym_entry_source *source;
struct map *map;
FILE *file;
char command[PATH_MAX*2];
const char *path;
u64 len;
if (!syme)
return -1;
sym = sym_entry__symbol(syme);
map = syme->map;
/*
* We can't annotate with just /proc/kallsyms
*/
if (map->dso->origin == DSO__ORIG_KERNEL)
return -1;
if (syme->src == NULL) {
syme->src = zalloc(sizeof(*source));
if (syme->src == NULL)
return -1;
pthread_mutex_init(&syme->src->lock, NULL);
}
source = syme->src;
if (source->lines) {
pthread_mutex_lock(&source->lock);
goto out_assign;
}
path = map->dso->long_name;
len = sym->end - sym->start;
sprintf(command,
"objdump --start-address=%#0*Lx --stop-address=%#0*Lx -dS %s",
BITS_PER_LONG / 4, map__rip_2objdump(map, sym->start),
BITS_PER_LONG / 4, map__rip_2objdump(map, sym->end), path);
file = popen(command, "r");
if (!file)
return -1;
pthread_mutex_lock(&source->lock);
source->lines_tail = &source->lines;
while (!feof(file)) {
struct source_line *src;
size_t dummy = 0;
char *c, *sep;
src = malloc(sizeof(struct source_line));
assert(src != NULL);
memset(src, 0, sizeof(struct source_line));
if (getline(&src->line, &dummy, file) < 0)
break;
if (!src->line)
break;
c = strchr(src->line, '\n');
if (c)
*c = 0;
src->next = NULL;
*source->lines_tail = src;
source->lines_tail = &src->next;
src->eip = strtoull(src->line, &sep, 16);
if (*sep == ':')
src->eip = map__objdump_2ip(map, src->eip);
else /* this line has no ip info (e.g. source line) */
src->eip = 0;
}
pclose(file);
out_assign:
sym_filter_entry = syme;
pthread_mutex_unlock(&source->lock);
return 0;
}
static void __zero_source_counters(struct sym_entry *syme)
{
int i;
struct source_line *line;
line = syme->src->lines;
while (line) {
for (i = 0; i < nr_counters; i++)
line->count[i] = 0;
line = line->next;
}
}
static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip)
{
struct source_line *line;
if (syme != sym_filter_entry)
return;
if (pthread_mutex_trylock(&syme->src->lock))
return;
if (syme->src == NULL || syme->src->source == NULL)
goto out_unlock;
for (line = syme->src->lines; line; line = line->next) {
/* skip lines without IP info */
if (line->eip == 0)
continue;
if (line->eip == ip) {
line->count[counter]++;
break;
}
if (line->eip > ip)
break;
}
out_unlock:
pthread_mutex_unlock(&syme->src->lock);
}
#define PATTERN_LEN (BITS_PER_LONG / 4 + 2)
static void lookup_sym_source(struct sym_entry *syme)
{
struct symbol *symbol = sym_entry__symbol(syme);
struct source_line *line;
char pattern[PATTERN_LEN + 1];
sprintf(pattern, "%0*Lx <", BITS_PER_LONG / 4,
map__rip_2objdump(syme->map, symbol->start));
pthread_mutex_lock(&syme->src->lock);
for (line = syme->src->lines; line; line = line->next) {
if (memcmp(line->line, pattern, PATTERN_LEN) == 0) {
syme->src->source = line;
break;
}
}
pthread_mutex_unlock(&syme->src->lock);
}
static void show_lines(struct source_line *queue, int count, int total)
{
int i;
struct source_line *line;
line = queue;
for (i = 0; i < count; i++) {
float pcnt = 100.0*(float)line->count[sym_counter]/(float)total;
printf("%8li %4.1f%%\t%s\n", line->count[sym_counter], pcnt, line->line);
line = line->next;
}
}
#define TRACE_COUNT 3
static void show_details(struct sym_entry *syme)
{
struct symbol *symbol;
struct source_line *line;
struct source_line *line_queue = NULL;
int displayed = 0;
int line_queue_count = 0, total = 0, more = 0;
if (!syme)
return;
if (!syme->src->source)
lookup_sym_source(syme);
if (!syme->src->source)
return;
symbol = sym_entry__symbol(syme);
printf("Showing %s for %s\n", event_name(sym_counter), symbol->name);
printf(" Events Pcnt (>=%d%%)\n", sym_pcnt_filter);
pthread_mutex_lock(&syme->src->lock);
line = syme->src->source;
while (line) {
total += line->count[sym_counter];
line = line->next;
}
line = syme->src->source;
while (line) {
float pcnt = 0.0;
if (!line_queue_count)
line_queue = line;
line_queue_count++;
if (line->count[sym_counter])
pcnt = 100.0 * line->count[sym_counter] / (float)total;
if (pcnt >= (float)sym_pcnt_filter) {
if (displayed <= print_entries)
show_lines(line_queue, line_queue_count, total);
else more++;
displayed += line_queue_count;
line_queue_count = 0;
line_queue = NULL;
} else if (line_queue_count > TRACE_COUNT) {
line_queue = line_queue->next;
line_queue_count--;
}
line->count[sym_counter] = zero ? 0 : line->count[sym_counter] * 7 / 8;
line = line->next;
}
pthread_mutex_unlock(&syme->src->lock);
if (more)
printf("%d lines not displayed, maybe increase display entries [e]\n", more);
}
/*
* Symbols will be added here in event__process_sample and will get out
* after decayed.
*/
static LIST_HEAD(active_symbols);
static pthread_mutex_t active_symbols_lock = PTHREAD_MUTEX_INITIALIZER;
/*
* Ordering weight: count-1 * count-2 * ... / count-n
*/
static double sym_weight(const struct sym_entry *sym)
{
double weight = sym->snap_count;
int counter;
if (!display_weighted)
return weight;
for (counter = 1; counter < nr_counters-1; counter++)
weight *= sym->count[counter];
weight /= (sym->count[counter] + 1);
return weight;
}
static long samples;
static long kernel_samples, us_samples;
static long exact_samples;
static long guest_us_samples, guest_kernel_samples;
static const char CONSOLE_CLEAR[] = "[H[2J";
static void __list_insert_active_sym(struct sym_entry *syme)
{
list_add(&syme->node, &active_symbols);
}
static void list_remove_active_sym(struct sym_entry *syme)
{
pthread_mutex_lock(&active_symbols_lock);
list_del_init(&syme->node);
pthread_mutex_unlock(&active_symbols_lock);
}
static void rb_insert_active_sym(struct rb_root *tree, struct sym_entry *se)
{
struct rb_node **p = &tree->rb_node;
struct rb_node *parent = NULL;
struct sym_entry *iter;
while (*p != NULL) {
parent = *p;
iter = rb_entry(parent, struct sym_entry, rb_node);
if (se->weight > iter->weight)
p = &(*p)->rb_left;
else
p = &(*p)->rb_right;
}
rb_link_node(&se->rb_node, parent, p);
rb_insert_color(&se->rb_node, tree);
}
static void print_sym_table(void)
{
int printed = 0, j;
int counter, snap = !display_weighted ? sym_counter : 0;
float samples_per_sec = samples/delay_secs;
float ksamples_per_sec = kernel_samples/delay_secs;
float us_samples_per_sec = (us_samples)/delay_secs;
float guest_kernel_samples_per_sec = (guest_kernel_samples)/delay_secs;
float guest_us_samples_per_sec = (guest_us_samples)/delay_secs;
float esamples_percent = (100.0*exact_samples)/samples;
float sum_ksamples = 0.0;
struct sym_entry *syme, *n;
struct rb_root tmp = RB_ROOT;
struct rb_node *nd;
int sym_width = 0, dso_width = 0, dso_short_width = 0;
const int win_width = winsize.ws_col - 1;
samples = us_samples = kernel_samples = exact_samples = 0;
guest_kernel_samples = guest_us_samples = 0;
/* Sort the active symbols */
pthread_mutex_lock(&active_symbols_lock);
syme = list_entry(active_symbols.next, struct sym_entry, node);
pthread_mutex_unlock(&active_symbols_lock);
list_for_each_entry_safe_from(syme, n, &active_symbols, node) {
syme->snap_count = syme->count[snap];
if (syme->snap_count != 0) {
if ((hide_user_symbols &&
syme->origin == PERF_RECORD_MISC_USER) ||
(hide_kernel_symbols &&
syme->origin == PERF_RECORD_MISC_KERNEL)) {
list_remove_active_sym(syme);
continue;
}
syme->weight = sym_weight(syme);
rb_insert_active_sym(&tmp, syme);
sum_ksamples += syme->snap_count;
for (j = 0; j < nr_counters; j++)
syme->count[j] = zero ? 0 : syme->count[j] * 7 / 8;
} else
list_remove_active_sym(syme);
}
puts(CONSOLE_CLEAR);
printf("%-*.*s\n", win_width, win_width, graph_dotted_line);
if (!perf_guest) {
printf(" PerfTop:%8.0f irqs/sec kernel:%4.1f%%"
" exact: %4.1f%% [",
samples_per_sec,
100.0 - (100.0 * ((samples_per_sec - ksamples_per_sec) /
samples_per_sec)),
esamples_percent);
} else {
printf(" PerfTop:%8.0f irqs/sec kernel:%4.1f%% us:%4.1f%%"
" guest kernel:%4.1f%% guest us:%4.1f%%"
" exact: %4.1f%% [",
samples_per_sec,
100.0 - (100.0 * ((samples_per_sec-ksamples_per_sec) /
samples_per_sec)),
100.0 - (100.0 * ((samples_per_sec-us_samples_per_sec) /
samples_per_sec)),
100.0 - (100.0 * ((samples_per_sec -
guest_kernel_samples_per_sec) /
samples_per_sec)),
100.0 - (100.0 * ((samples_per_sec -
guest_us_samples_per_sec) /
samples_per_sec)),
esamples_percent);
}
if (nr_counters == 1 || !display_weighted) {
printf("%Ld", (u64)attrs[0].sample_period);
if (freq)
printf("Hz ");
else
printf(" ");
}
if (!display_weighted)
printf("%s", event_name(sym_counter));
else for (counter = 0; counter < nr_counters; counter++) {
if (counter)
printf("/");
printf("%s", event_name(counter));
}
printf( "], ");
if (target_pid != -1)
printf(" (target_pid: %d", target_pid);
else if (target_tid != -1)
printf(" (target_tid: %d", target_tid);
else
printf(" (all");
if (profile_cpu != -1)
printf(", cpu: %d)\n", profile_cpu);
else {
if (target_tid != -1)
printf(")\n");
else
printf(", %d CPUs)\n", nr_cpus);
}
printf("%-*.*s\n", win_width, win_width, graph_dotted_line);
if (sym_filter_entry) {
show_details(sym_filter_entry);
return;
}
/*
* Find the longest symbol name that will be displayed
*/
for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) {
syme = rb_entry(nd, struct sym_entry, rb_node);
if (++printed > print_entries ||
(int)syme->snap_count < count_filter)
continue;
if (syme->map->dso->long_name_len > dso_width)
dso_width = syme->map->dso->long_name_len;
if (syme->map->dso->short_name_len > dso_short_width)
dso_short_width = syme->map->dso->short_name_len;
if (syme->name_len > sym_width)
sym_width = syme->name_len;
}
printed = 0;
if (sym_width + dso_width > winsize.ws_col - 29) {
dso_width = dso_short_width;
if (sym_width + dso_width > winsize.ws_col - 29)
sym_width = winsize.ws_col - dso_width - 29;
}
putchar('\n');
if (nr_counters == 1)
printf(" samples pcnt");
else
printf(" weight samples pcnt");
if (verbose)
printf(" RIP ");
printf(" %-*.*s DSO\n", sym_width, sym_width, "function");
printf(" %s _______ _____",
nr_counters == 1 ? " " : "______");
if (verbose)
printf(" ________________");
printf(" %-*.*s", sym_width, sym_width, graph_line);
printf(" %-*.*s", dso_width, dso_width, graph_line);
puts("\n");
for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) {
struct symbol *sym;
double pcnt;
syme = rb_entry(nd, struct sym_entry, rb_node);
sym = sym_entry__symbol(syme);
if (++printed > print_entries || (int)syme->snap_count < count_filter)
continue;
pcnt = 100.0 - (100.0 * ((sum_ksamples - syme->snap_count) /
sum_ksamples));
if (nr_counters == 1 || !display_weighted)
printf("%20.2f ", syme->weight);
else
printf("%9.1f %10ld ", syme->weight, syme->snap_count);
percent_color_fprintf(stdout, "%4.1f%%", pcnt);
if (verbose)
printf(" %016llx", sym->start);
printf(" %-*.*s", sym_width, sym_width, sym->name);
printf(" %-*.*s\n", dso_width, dso_width,
dso_width >= syme->map->dso->long_name_len ?
syme->map->dso->long_name :
syme->map->dso->short_name);
}
}
static void prompt_integer(int *target, const char *msg)
{
char *buf = malloc(0), *p;
size_t dummy = 0;
int tmp;
fprintf(stdout, "\n%s: ", msg);
if (getline(&buf, &dummy, stdin) < 0)
return;
p = strchr(buf, '\n');
if (p)
*p = 0;
p = buf;
while(*p) {
if (!isdigit(*p))
goto out_free;
p++;
}
tmp = strtoul(buf, NULL, 10);
*target = tmp;
out_free:
free(buf);
}
static void prompt_percent(int *target, const char *msg)
{
int tmp = 0;
prompt_integer(&tmp, msg);
if (tmp >= 0 && tmp <= 100)
*target = tmp;
}
static void prompt_symbol(struct sym_entry **target, const char *msg)
{
char *buf = malloc(0), *p;
struct sym_entry *syme = *target, *n, *found = NULL;
size_t dummy = 0;
/* zero counters of active symbol */
if (syme) {
pthread_mutex_lock(&syme->src->lock);
__zero_source_counters(syme);
*target = NULL;
pthread_mutex_unlock(&syme->src->lock);
}
fprintf(stdout, "\n%s: ", msg);
if (getline(&buf, &dummy, stdin) < 0)
goto out_free;
p = strchr(buf, '\n');
if (p)
*p = 0;
pthread_mutex_lock(&active_symbols_lock);
syme = list_entry(active_symbols.next, struct sym_entry, node);
pthread_mutex_unlock(&active_symbols_lock);
list_for_each_entry_safe_from(syme, n, &active_symbols, node) {
struct symbol *sym = sym_entry__symbol(syme);
if (!strcmp(buf, sym->name)) {
found = syme;
break;
}
}
if (!found) {
fprintf(stderr, "Sorry, %s is not active.\n", buf);
sleep(1);
return;
} else
parse_source(found);
out_free:
free(buf);
}
static void print_mapped_keys(void)
{
char *name = NULL;
if (sym_filter_entry) {
struct symbol *sym = sym_entry__symbol(sym_filter_entry);
name = sym->name;
}
fprintf(stdout, "\nMapped keys:\n");
fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", delay_secs);
fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", print_entries);
if (nr_counters > 1)
fprintf(stdout, "\t[E] active event counter. \t(%s)\n", event_name(sym_counter));
fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", count_filter);
fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", sym_pcnt_filter);
fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL");
fprintf(stdout, "\t[S] stop annotation.\n");
if (nr_counters > 1)
fprintf(stdout, "\t[w] toggle display weighted/count[E]r. \t(%d)\n", display_weighted ? 1 : 0);
fprintf(stdout,
"\t[K] hide kernel_symbols symbols. \t(%s)\n",
hide_kernel_symbols ? "yes" : "no");
fprintf(stdout,
"\t[U] hide user symbols. \t(%s)\n",
hide_user_symbols ? "yes" : "no");
fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", zero ? 1 : 0);
fprintf(stdout, "\t[qQ] quit.\n");
}
static int key_mapped(int c)
{
switch (c) {
case 'd':
case 'e':
case 'f':
case 'z':
case 'q':
case 'Q':
case 'K':
case 'U':
case 'F':
case 's':
case 'S':
return 1;
case 'E':
case 'w':
return nr_counters > 1 ? 1 : 0;
default:
break;
}
return 0;
}
static void handle_keypress(struct perf_session *session, int c)
{
if (!key_mapped(c)) {
struct pollfd stdin_poll = { .fd = 0, .events = POLLIN };
struct termios tc, save;
print_mapped_keys();
fprintf(stdout, "\nEnter selection, or unmapped key to continue: ");
fflush(stdout);
tcgetattr(0, &save);
tc = save;
tc.c_lflag &= ~(ICANON | ECHO);
tc.c_cc[VMIN] = 0;
tc.c_cc[VTIME] = 0;
tcsetattr(0, TCSANOW, &tc);
poll(&stdin_poll, 1, -1);
c = getc(stdin);
tcsetattr(0, TCSAFLUSH, &save);
if (!key_mapped(c))
return;
}
switch (c) {
case 'd':
prompt_integer(&delay_secs, "Enter display delay");
if (delay_secs < 1)
delay_secs = 1;
break;
case 'e':
prompt_integer(&print_entries, "Enter display entries (lines)");
if (print_entries == 0) {
sig_winch_handler(SIGWINCH);
signal(SIGWINCH, sig_winch_handler);
} else
signal(SIGWINCH, SIG_DFL);
break;
case 'E':
if (nr_counters > 1) {
int i;
fprintf(stderr, "\nAvailable events:");
for (i = 0; i < nr_counters; i++)
fprintf(stderr, "\n\t%d %s", i, event_name(i));
prompt_integer(&sym_counter, "Enter details event counter");
if (sym_counter >= nr_counters) {
fprintf(stderr, "Sorry, no such event, using %s.\n", event_name(0));
sym_counter = 0;
sleep(1);
}
} else sym_counter = 0;
break;
case 'f':
prompt_integer(&count_filter, "Enter display event count filter");
break;
case 'F':
prompt_percent(&sym_pcnt_filter, "Enter details display event filter (percent)");
break;
case 'K':
hide_kernel_symbols = !hide_kernel_symbols;
break;
case 'q':
case 'Q':
printf("exiting.\n");
if (dump_symtab)
perf_session__fprintf_dsos(session, stderr);
exit(0);
case 's':
prompt_symbol(&sym_filter_entry, "Enter details symbol");
break;
case 'S':
if (!sym_filter_entry)
break;
else {
struct sym_entry *syme = sym_filter_entry;
pthread_mutex_lock(&syme->src->lock);
sym_filter_entry = NULL;
__zero_source_counters(syme);
pthread_mutex_unlock(&syme->src->lock);
}
break;
case 'U':
hide_user_symbols = !hide_user_symbols;
break;
case 'w':
display_weighted = ~display_weighted;
break;
case 'z':
zero = !zero;
break;
default:
break;
}
}
static void *display_thread(void *arg __used)
{
struct pollfd stdin_poll = { .fd = 0, .events = POLLIN };
struct termios tc, save;
int delay_msecs, c;
struct perf_session *session = (struct perf_session *) arg;
tcgetattr(0, &save);
tc = save;
tc.c_lflag &= ~(ICANON | ECHO);
tc.c_cc[VMIN] = 0;
tc.c_cc[VTIME] = 0;
repeat:
delay_msecs = delay_secs * 1000;
tcsetattr(0, TCSANOW, &tc);
/* trash return*/
getc(stdin);
do {
print_sym_table();
} while (!poll(&stdin_poll, 1, delay_msecs) == 1);
c = getc(stdin);
tcsetattr(0, TCSAFLUSH, &save);
handle_keypress(session, c);
goto repeat;
return NULL;
}
/* Tag samples to be skipped. */
static const char *skip_symbols[] = {
"default_idle",
"cpu_idle",
"enter_idle",
"exit_idle",
"mwait_idle",
"mwait_idle_with_hints",
"poll_idle",
"ppc64_runlatch_off",
"pseries_dedicated_idle_sleep",
NULL
};
static int symbol_filter(struct map *map, struct symbol *sym)
{
struct sym_entry *syme;
const char *name = sym->name;
int i;
/*
* ppc64 uses function descriptors and appends a '.' to the
* start of every instruction address. Remove it.
*/
if (name[0] == '.')
name++;
if (!strcmp(name, "_text") ||
!strcmp(name, "_etext") ||
!strcmp(name, "_sinittext") ||
!strncmp("init_module", name, 11) ||
!strncmp("cleanup_module", name, 14) ||
strstr(name, "_text_start") ||
strstr(name, "_text_end"))
return 1;
syme = symbol__priv(sym);
syme->map = map;
syme->src = NULL;
if (!sym_filter_entry && sym_filter && !strcmp(name, sym_filter)) {
/* schedule initial sym_filter_entry setup */
sym_filter_entry_sched = syme;
sym_filter = NULL;
}
for (i = 0; skip_symbols[i]; i++) {
if (!strcmp(skip_symbols[i], name)) {
syme->skip = 1;
break;
}
}
if (!syme->skip)
syme->name_len = strlen(sym->name);
return 0;
}
static void event__process_sample(const event_t *self,
struct perf_session *session, int counter)
{
u64 ip = self->ip.ip;
struct sym_entry *syme;
struct addr_location al;
struct sample_data data;
struct machine *machine;
u8 origin = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
++samples;
switch (origin) {
case PERF_RECORD_MISC_USER:
++us_samples;
if (hide_user_symbols)
return;
machine = perf_session__find_host_machine(session);
break;
case PERF_RECORD_MISC_KERNEL:
++kernel_samples;