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perf top: Move display agnostic routines to util/top.[ch] 

Paving the way for a slang browser a la 'perf report --tui'.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2011-01-31 14:50:39 -02:00
parent 7e2ed09753
commit 8c3e10eb19
4 changed files with 418 additions and 345 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
tools/perf/Makefile
View File

@ -437,6 +437,7 @@ LIB_H += util/probe-finder.h
LIB_H += util/probe-event.h
LIB_H += util/pstack.h
LIB_H += util/cpumap.h
LIB_H += util/top.h
LIB_H += $(ARCH_INCLUDE)
LIB_OBJS += $(OUTPUT)util/abspath.o
@ -464,6 +465,7 @@ LIB_OBJS += $(OUTPUT)util/strbuf.o
LIB_OBJS += $(OUTPUT)util/string.o
LIB_OBJS += $(OUTPUT)util/strlist.o
LIB_OBJS += $(OUTPUT)util/strfilter.o
LIB_OBJS += $(OUTPUT)util/top.o
LIB_OBJS += $(OUTPUT)util/usage.o
LIB_OBJS += $(OUTPUT)util/wrapper.o
LIB_OBJS += $(OUTPUT)util/sigchain.o

482
tools/perf/builtin-top.c
View File

@ -27,6 +27,7 @@
#include "util/symbol.h"
#include "util/thread.h"
#include "util/thread_map.h"
#include "util/top.h"
#include "util/util.h"
#include <linux/rbtree.h>
#include "util/parse-options.h"
@ -47,7 +48,6 @@
#include <errno.h>
#include <time.h>
#include <sched.h>
#include <pthread.h>
#include <sys/syscall.h>
#include <sys/ioctl.h>
@ -62,75 +62,35 @@
#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
struct perf_evlist *evsel_list;
static struct perf_top top = {
.count_filter = 5,
.delay_secs = 2,
.display_weighted = -1,
.target_pid = -1,
.target_tid = -1,
.active_symbols = LIST_HEAD_INIT(top.active_symbols),
.active_symbols_lock = PTHREAD_MUTEX_INITIALIZER,
.freq = 1000, /* 1 KHz */
};
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 bool inherit = false;
static int realtime_prio = 0;
static bool group = false;
static unsigned int page_size;
static unsigned int mmap_pages = 128;
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 struct perf_evsel *sym_evsel = NULL;
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
@ -165,10 +125,10 @@ void get_term_dimensions(struct winsize *ws)
static void update_print_entries(struct winsize *ws)
{
print_entries = ws->ws_row;
top.print_entries = ws->ws_row;
if (print_entries > 9)
print_entries -= 9;
if (top.print_entries > 9)
top.print_entries -= 9;
}
static void sig_winch_handler(int sig __used)
@ -269,7 +229,7 @@ static void __zero_source_counters(struct sym_entry *syme)
line = syme->src->lines;
while (line) {
for (i = 0; i < evsel_list->nr_entries; i++)
for (i = 0; i < top.evlist->nr_entries; i++)
line->count[i] = 0;
line = line->next;
}
@ -331,9 +291,9 @@ static void show_lines(struct source_line *queue, int count, int total)
line = queue;
for (i = 0; i < count; i++) {
float pcnt = 100.0*(float)line->count[sym_counter]/(float)total;
float pcnt = 100.0*(float)line->count[top.sym_counter]/(float)total;
printf("%8li %4.1f%%\t%s\n", line->count[sym_counter], pcnt, line->line);
printf("%8li %4.1f%%\t%s\n", line->count[top.sym_counter], pcnt, line->line);
line = line->next;
}
}
@ -358,13 +318,13 @@ static void show_details(struct sym_entry *syme)
return;
symbol = sym_entry__symbol(syme);
printf("Showing %s for %s\n", event_name(sym_evsel), symbol->name);
printf("Showing %s for %s\n", event_name(top.sym_evsel), 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];
total += line->count[top.sym_counter];
line = line->next;
}
@ -376,10 +336,10 @@ static void show_details(struct sym_entry *syme)
line_queue = line;
line_queue_count++;
if (line->count[sym_counter])
pcnt = 100.0 * line->count[sym_counter] / (float)total;
if (line->count[top.sym_counter])
pcnt = 100.0 * line->count[top.sym_counter] / (float)total;
if (pcnt >= (float)sym_pcnt_filter) {
if (displayed <= print_entries)
if (displayed <= top.print_entries)
show_lines(line_queue, line_queue_count, total);
else more++;
displayed += line_queue_count;
@ -390,7 +350,7 @@ static void show_details(struct sym_entry *syme)
line_queue_count--;
}
line->count[sym_counter] = zero ? 0 : line->count[sym_counter] * 7 / 8;
line->count[top.sym_counter] = top.zero ? 0 : line->count[top.sym_counter] * 7 / 8;
line = line->next;
}
pthread_mutex_unlock(&syme->src->lock);
@ -398,181 +358,30 @@ static void show_details(struct sym_entry *syme)
printf("%d lines not displayed, maybe increase display entries [e]\n", more);
}
/*
* Symbols will be added here in perf_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 < evsel_list->nr_entries - 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[] = "";
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);
list_add(&syme->node, &top.active_symbols);
}
static void print_sym_table(struct perf_session *session)
{
int printed = 0, j;
struct perf_evsel *counter;
int 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;
char bf[160];
int printed = 0;
struct rb_node *nd;
int sym_width = 0, dso_width = 0, dso_short_width = 0;
struct sym_entry *syme;
struct rb_root tmp = RB_ROOT;
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 < evsel_list->nr_entries; j++)
syme->count[j] = zero ? 0 : syme->count[j] * 7 / 8;
} else
list_remove_active_sym(syme);
}
int sym_width, dso_width, dso_short_width;
float sum_ksamples = perf_top__decay_samples(&top, &tmp);
puts(CONSOLE_CLEAR);
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);
}
perf_top__header_snprintf(&top, bf, sizeof(bf));
printf("%s\n", bf);
if (evsel_list->nr_entries == 1 || !display_weighted) {
struct perf_evsel *first;
first = list_entry(evsel_list->entries.next, struct perf_evsel, node);
printf("%" PRIu64, (uint64_t)first->attr.sample_period);
if (freq)
printf("Hz ");
else
printf(" ");
}
if (!display_weighted)
printf("%s", event_name(sym_evsel));
else list_for_each_entry(counter, &evsel_list->entries, node) {
if (counter->idx)
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 (cpu_list)
printf(", CPU%s: %s)\n", evsel_list->cpus->nr > 1 ? "s" : "", cpu_list);
else {
if (target_tid != -1)
printf(")\n");
else
printf(", %d CPU%s)\n", evsel_list->cpus->nr,
evsel_list->cpus->nr > 1 ? "s" : "");
}
perf_top__reset_sample_counters(&top);
printf("%-*.*s\n", win_width, win_width, graph_dotted_line);
@ -587,26 +396,8 @@ static void print_sym_table(struct perf_session *session)
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;
perf_top__find_widths(&top, &tmp, &dso_width, &dso_short_width,
&sym_width);
if (sym_width + dso_width > winsize.ws_col - 29) {
dso_width = dso_short_width;
@ -614,7 +405,7 @@ static void print_sym_table(struct perf_session *session)
sym_width = winsize.ws_col - dso_width - 29;
}
putchar('\n');
if (evsel_list->nr_entries == 1)
if (top.evlist->nr_entries == 1)
printf(" samples pcnt");
else
printf(" weight samples pcnt");
@ -623,7 +414,7 @@ static void print_sym_table(struct perf_session *session)
printf(" RIP ");
printf(" %-*.*s DSO\n", sym_width, sym_width, "function");
printf(" %s _______ _____",
evsel_list->nr_entries == 1 ? " " : "______");
top.evlist->nr_entries == 1 ? " " : "______");
if (verbose)
printf(" ________________");
printf(" %-*.*s", sym_width, sym_width, graph_line);
@ -636,13 +427,14 @@ static void print_sym_table(struct perf_session *session)
syme = rb_entry(nd, struct sym_entry, rb_node);
sym = sym_entry__symbol(syme);
if (++printed > print_entries || (int)syme->snap_count < count_filter)
if (++printed > top.print_entries ||
(int)syme->snap_count < top.count_filter)
continue;
pcnt = 100.0 - (100.0 * ((sum_ksamples - syme->snap_count) /
sum_ksamples));
if (evsel_list->nr_entries == 1 || !display_weighted)
if (top.evlist->nr_entries == 1 || !top.display_weighted)
printf("%20.2f ", syme->weight);
else
printf("%9.1f %10ld ", syme->weight, syme->snap_count);
@ -715,11 +507,11 @@ static void prompt_symbol(struct sym_entry **target, const char *msg)
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);
pthread_mutex_lock(&top.active_symbols_lock);
syme = list_entry(top.active_symbols.next, struct sym_entry, node);
pthread_mutex_unlock(&top.active_symbols_lock);
list_for_each_entry_safe_from(syme, n, &active_symbols, node) {
list_for_each_entry_safe_from(syme, n, &top.active_symbols, node) {
struct symbol *sym = sym_entry__symbol(syme);
if (!strcmp(buf, sym->name)) {
@ -749,28 +541,28 @@ static void print_mapped_keys(void)
}
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);
fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", top.delay_secs);
fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", top.print_entries);
if (evsel_list->nr_entries > 1)
fprintf(stdout, "\t[E] active event counter. \t(%s)\n", event_name(sym_evsel));
if (top.evlist->nr_entries > 1)
fprintf(stdout, "\t[E] active event counter. \t(%s)\n", event_name(top.sym_evsel));
fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", count_filter);
fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", top.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 (evsel_list->nr_entries > 1)
fprintf(stdout, "\t[w] toggle display weighted/count[E]r. \t(%d)\n", display_weighted ? 1 : 0);
if (top.evlist->nr_entries > 1)
fprintf(stdout, "\t[w] toggle display weighted/count[E]r. \t(%d)\n", top.display_weighted ? 1 : 0);
fprintf(stdout,
"\t[K] hide kernel_symbols symbols. \t(%s)\n",
hide_kernel_symbols ? "yes" : "no");
top.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);
top.hide_user_symbols ? "yes" : "no");
fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", top.zero ? 1 : 0);
fprintf(stdout, "\t[qQ] quit.\n");
}
@ -791,7 +583,7 @@ static int key_mapped(int c)
return 1;
case 'E':
case 'w':
return evsel_list->nr_entries > 1 ? 1 : 0;
return top.evlist->nr_entries > 1 ? 1 : 0;
default:
break;
}
@ -826,47 +618,47 @@ static void handle_keypress(struct perf_session *session, int c)
switch (c) {
case 'd':
prompt_integer(&delay_secs, "Enter display delay");
if (delay_secs < 1)
delay_secs = 1;
prompt_integer(&top.delay_secs, "Enter display delay");
if (top.delay_secs < 1)
top.delay_secs = 1;
break;
case 'e':
prompt_integer(&print_entries, "Enter display entries (lines)");
if (print_entries == 0) {
prompt_integer(&top.print_entries, "Enter display entries (lines)");
if (top.print_entries == 0) {
sig_winch_handler(SIGWINCH);
signal(SIGWINCH, sig_winch_handler);
} else
signal(SIGWINCH, SIG_DFL);
break;
case 'E':
if (evsel_list->nr_entries > 1) {
if (top.evlist->nr_entries > 1) {
fprintf(stderr, "\nAvailable events:");
list_for_each_entry(sym_evsel, &evsel_list->entries, node)
fprintf(stderr, "\n\t%d %s", sym_evsel->idx, event_name(sym_evsel));
list_for_each_entry(top.sym_evsel, &top.evlist->entries, node)
fprintf(stderr, "\n\t%d %s", top.sym_evsel->idx, event_name(top.sym_evsel));
prompt_integer(&sym_counter, "Enter details event counter");
prompt_integer(&top.sym_counter, "Enter details event counter");
if (sym_counter >= evsel_list->nr_entries) {
sym_evsel = list_entry(evsel_list->entries.next, struct perf_evsel, node);
sym_counter = 0;
fprintf(stderr, "Sorry, no such event, using %s.\n", event_name(sym_evsel));
if (top.sym_counter >= top.evlist->nr_entries) {
top.sym_evsel = list_entry(top.evlist->entries.next, struct perf_evsel, node);
top.sym_counter = 0;
fprintf(stderr, "Sorry, no such event, using %s.\n", event_name(top.sym_evsel));
sleep(1);
break;
}
list_for_each_entry(sym_evsel, &evsel_list->entries, node)
if (sym_evsel->idx == sym_counter)
list_for_each_entry(top.sym_evsel, &top.evlist->entries, node)
if (top.sym_evsel->idx == top.sym_counter)
break;
} else sym_counter = 0;
} else top.sym_counter = 0;
break;
case 'f':
prompt_integer(&count_filter, "Enter display event count filter");
prompt_integer(&top.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;
top.hide_kernel_symbols = !top.hide_kernel_symbols;
break;
case 'q':
case 'Q':
@ -890,13 +682,13 @@ static void handle_keypress(struct perf_session *session, int c)
}
break;
case 'U':
hide_user_symbols = !hide_user_symbols;
top.hide_user_symbols = !top.hide_user_symbols;
break;
case 'w':
display_weighted = ~display_weighted;
top.display_weighted = ~top.display_weighted;
break;
case 'z':
zero = !zero;
top.zero = !top.zero;
break;
default:
break;
@ -917,7 +709,7 @@ static void *display_thread(void *arg __used)
tc.c_cc[VTIME] = 0;
repeat:
delay_msecs = delay_secs * 1000;
delay_msecs = top.delay_secs * 1000;
tcsetattr(0, TCSANOW, &tc);
/* trash return*/
getc(stdin);
@ -1005,27 +797,27 @@ static void perf_event__process_sample(const union perf_event *event,
struct machine *machine;
u8 origin = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
++samples;
++top.samples;
switch (origin) {
case PERF_RECORD_MISC_USER:
++us_samples;
if (hide_user_symbols)
++top.us_samples;
if (top.hide_user_symbols)
return;
machine = perf_session__find_host_machine(session);
break;
case PERF_RECORD_MISC_KERNEL:
++kernel_samples;
if (hide_kernel_symbols)
++top.kernel_samples;
if (top.hide_kernel_symbols)
return;
machine = perf_session__find_host_machine(session);
break;
case PERF_RECORD_MISC_GUEST_KERNEL:
++guest_kernel_samples;
++top.guest_kernel_samples;
machine = perf_session__find_machine(session, event->ip.pid);
break;
case PERF_RECORD_MISC_GUEST_USER:
++guest_us_samples;
++top.guest_us_samples;
/*
* TODO: we don't process guest user from host side
* except simple counting.
@ -1042,7 +834,7 @@ static void perf_event__process_sample(const union perf_event *event,
}
if (event->header.misc & PERF_RECORD_MISC_EXACT_IP)
exact_samples++;
top.exact_samples++;
if (perf_event__preprocess_sample(event, session, &al, sample,
symbol_filter) < 0 ||
@ -1093,14 +885,14 @@ static void perf_event__process_sample(const union perf_event *event,
struct perf_evsel *evsel;
syme->origin = origin;
evsel = perf_evlist__id2evsel(evsel_list, sample->id);
evsel = perf_evlist__id2evsel(top.evlist, sample->id);
assert(evsel != NULL);
syme->count[evsel->idx]++;
record_precise_ip(syme, evsel->idx, ip);
pthread_mutex_lock(&active_symbols_lock);
pthread_mutex_lock(&top.active_symbols_lock);
if (list_empty(&syme->node) || !syme->node.next)
__list_insert_active_sym(syme);
pthread_mutex_unlock(&active_symbols_lock);
pthread_mutex_unlock(&top.active_symbols_lock);
}
}
@ -1109,7 +901,7 @@ static void perf_session__mmap_read_cpu(struct perf_session *self, int cpu)
struct perf_sample sample;
union perf_event *event;
while ((event = perf_evlist__read_on_cpu(evsel_list, cpu)) != NULL) {
while ((event = perf_evlist__read_on_cpu(top.evlist, cpu)) != NULL) {
perf_session__parse_sample(self, event, &sample);
if (event->header.type == PERF_RECORD_SAMPLE)
@ -1123,7 +915,7 @@ static void perf_session__mmap_read(struct perf_session *self)
{
int i;
for (i = 0; i < evsel_list->cpus->nr; i++)
for (i = 0; i < top.evlist->cpus->nr; i++)
perf_session__mmap_read_cpu(self, i);
}
@ -1136,10 +928,10 @@ static void start_counters(struct perf_evlist *evlist)
attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID;
if (freq) {
if (top.freq) {
attr->sample_type |= PERF_SAMPLE_PERIOD;
attr->freq = 1;
attr->sample_freq = freq;
attr->sample_freq = top.freq;
}
if (evlist->nr_entries > 1) {
@ -1149,8 +941,8 @@ static void start_counters(struct perf_evlist *evlist)
attr->mmap = 1;
try_again:
if (perf_evsel__open(counter, evsel_list->cpus,
evsel_list->threads, group, inherit) < 0) {
if (perf_evsel__open(counter, top.evlist->cpus,
top.evlist->threads, group, inherit) < 0) {
int err = errno;
if (err == EPERM || err == EACCES)
@ -1198,18 +990,18 @@ static int __cmd_top(void)
if (session == NULL)
return -ENOMEM;
if (target_tid != -1)
perf_event__synthesize_thread(target_tid, perf_event__process,
if (top.target_tid != -1)
perf_event__synthesize_thread(top.target_tid, perf_event__process,
session);
else
perf_event__synthesize_threads(perf_event__process, session);
start_counters(evsel_list);
first = list_entry(evsel_list->entries.next, struct perf_evsel, node);
start_counters(top.evlist);
first = list_entry(top.evlist->entries.next, struct perf_evsel, node);
perf_session__set_sample_type(session, first->attr.sample_type);
/* Wait for a minimal set of events before starting the snapshot */
poll(evsel_list->pollfd, evsel_list->nr_fds, 100);
poll(top.evlist->pollfd, top.evlist->nr_fds, 100);
perf_session__mmap_read(session);
@ -1229,12 +1021,12 @@ static int __cmd_top(void)
}
while (1) {
int hits = samples;
u64 hits = top.samples;
perf_session__mmap_read(session);
if (hits == samples)
ret = poll(evsel_list->pollfd, evsel_list->nr_fds, 100);
if (hits == top.samples)
ret = poll(top.evlist->pollfd, top.evlist->nr_fds, 100);
}
return 0;
@ -1246,31 +1038,31 @@ static const char * const top_usage[] = {
};
static const struct option options[] = {
OPT_CALLBACK('e', "event", &evsel_list, "event",
OPT_CALLBACK('e', "event", &top.evlist, "event",
"event selector. use 'perf list' to list available events",
parse_events),
OPT_INTEGER('c', "count", &default_interval,
"event period to sample"),
OPT_INTEGER('p', "pid", &target_pid,
OPT_INTEGER('p', "pid", &top.target_pid,
"profile events on existing process id"),
OPT_INTEGER('t', "tid", &target_tid,
OPT_INTEGER('t', "tid", &top.target_tid,
"profile events on existing thread id"),
OPT_BOOLEAN('a', "all-cpus", &system_wide,
"system-wide collection from all CPUs"),
OPT_STRING('C', "cpu", &cpu_list, "cpu",
OPT_STRING('C', "cpu", &top.cpu_list, "cpu",
"list of cpus to monitor"),
OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
"file", "vmlinux pathname"),
OPT_BOOLEAN('K', "hide_kernel_symbols", &hide_kernel_symbols,
OPT_BOOLEAN('K', "hide_kernel_symbols", &top.hide_kernel_symbols,
"hide kernel symbols"),
OPT_UINTEGER('m', "mmap-pages", &mmap_pages, "number of mmap data pages"),
OPT_INTEGER('r', "realtime", &realtime_prio,
"collect data with this RT SCHED_FIFO priority"),
OPT_INTEGER('d', "delay", &delay_secs,
OPT_INTEGER('d', "delay", &top.delay_secs,
"number of seconds to delay between refreshes"),
OPT_BOOLEAN('D', "dump-symtab", &dump_symtab,
"dump the symbol table used for profiling"),
OPT_INTEGER('f', "count-filter", &count_filter,
OPT_INTEGER('f', "count-filter", &top.count_filter,
"only display functions with more events than this"),
OPT_BOOLEAN('g', "group", &group,
"put the counters into a counter group"),
@ -1278,13 +1070,13 @@ static const struct option options[] = {
"child tasks inherit counters"),
OPT_STRING('s', "sym-annotate", &sym_filter, "symbol name",
"symbol to annotate"),
OPT_BOOLEAN('z', "zero", &zero,
OPT_BOOLEAN('z', "zero", &top.zero,
"zero history across updates"),
OPT_INTEGER('F', "freq", &freq,
OPT_INTEGER('F', "freq", &top.freq,
"profile at this frequency"),
OPT_INTEGER('E', "entries", &print_entries,
OPT_INTEGER('E', "entries", &top.print_entries,
"display this many functions"),
OPT_BOOLEAN('U', "hide_user_symbols", &hide_user_symbols,
OPT_BOOLEAN('U', "hide_user_symbols", &top.hide_user_symbols,
"hide user symbols"),
OPT_INCR('v', "verbose", &verbose,
"be more verbose (show counter open errors, etc)"),
@ -1296,8 +1088,8 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
struct perf_evsel *pos;
int status = -ENOMEM;
evsel_list = perf_evlist__new(NULL, NULL);
if (evsel_list == NULL)
top.evlist = perf_evlist__new(NULL, NULL);
if (top.evlist == NULL)
return -ENOMEM;
page_size = sysconf(_SC_PAGE_SIZE);
@ -1307,43 +1099,43 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
usage_with_options(top_usage, options);
/* CPU and PID are mutually exclusive */
if (target_tid > 0 && cpu_list) {
if (top.target_tid > 0 && top.cpu_list) {
printf("WARNING: PID switch overriding CPU\n");
sleep(1);
cpu_list = NULL;
top.cpu_list = NULL;
}
if (target_pid != -1)
target_tid = target_pid;
if (top.target_pid != -1)
top.target_tid = top.target_pid;
if (perf_evlist__create_maps(evsel_list, target_pid,
target_tid, cpu_list) < 0)
if (perf_evlist__create_maps(top.evlist, top.target_pid,
top.target_tid, top.cpu_list) < 0)
usage_with_options(top_usage, options);
if (!evsel_list->nr_entries &&
perf_evlist__add_default(evsel_list) < 0) {
if (!top.evlist->nr_entries &&
perf_evlist__add_default(top.evlist) < 0) {
pr_err("Not enough memory for event selector list\n");
return -ENOMEM;
}
if (delay_secs < 1)
delay_secs = 1;
if (top.delay_secs < 1)
top.delay_secs = 1;
/*
* User specified count overrides default frequency.
*/
if (default_interval)
freq = 0;
else if (freq) {
default_interval = freq;
top.freq = 0;
else if (top.freq) {
default_interval = top.freq;
} else {
fprintf(stderr, "frequency and count are zero, aborting\n");
exit(EXIT_FAILURE);
}
list_for_each_entry(pos, &evsel_list->entries, node) {
if (perf_evsel__alloc_fd(pos, evsel_list->cpus->nr,
evsel_list->threads->nr) < 0)
list_for_each_entry(pos, &top.evlist->entries, node) {
if (perf_evsel__alloc_fd(pos, top.evlist->cpus->nr,
top.evlist->threads->nr) < 0)
goto out_free_fd;
/*
* Fill in the ones not specifically initialized via -c:
@ -1354,28 +1146,28 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
pos->attr.sample_period = default_interval;
}
if (perf_evlist__alloc_pollfd(evsel_list) < 0 ||
perf_evlist__alloc_mmap(evsel_list) < 0)
if (perf_evlist__alloc_pollfd(top.evlist) < 0 ||
perf_evlist__alloc_mmap(top.evlist) < 0)
goto out_free_fd;
sym_evsel = list_entry(evsel_list->entries.next, struct perf_evsel, node);
top.sym_evsel = list_entry(top.evlist->entries.next, struct perf_evsel, node);
symbol_conf.priv_size = (sizeof(struct sym_entry) +
(evsel_list->nr_entries + 1) * sizeof(unsigned long));
(top.evlist->nr_entries + 1) * sizeof(unsigned long));
symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
if (symbol__init() < 0)
return -1;
get_term_dimensions(&winsize);
if (print_entries == 0) {
if (top.print_entries == 0) {
update_print_entries(&winsize);
signal(SIGWINCH, sig_winch_handler);
}
status = __cmd_top();
out_free_fd:
perf_evlist__delete(evsel_list);
perf_evlist__delete(top.evlist);
return status;
}

212
tools/perf/util/top.c Normal file
View File

@ -0,0 +1,212 @@
/*
* Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
*
* Refactored from builtin-top.c, see that files for further copyright notes.
*
* Released under the GPL v2. (and only v2, not any later version)
*/
#include "cpumap.h"
#include "event.h"
#include "evlist.h"
#include "evsel.h"
#include "parse-events.h"
#include "symbol.h"
#include "top.h"
#include <inttypes.h>
/*
* Ordering weight: count-1 * count-2 * ... / count-n
*/
static double sym_weight(const struct sym_entry *sym, struct perf_top *top)
{
double weight = sym->snap_count;
int counter;
if (!top->display_weighted)
return weight;
for (counter = 1; counter < top->evlist->nr_entries - 1; counter++)
weight *= sym->count[counter];
weight /= (sym->count[counter] + 1);
return weight;
}
static void perf_top__remove_active_sym(struct perf_top *top, struct sym_entry *syme)
{
pthread_mutex_lock(&top->active_symbols_lock);
list_del_init(&syme->node);
pthread_mutex_unlock(&top->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);
}
size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size)
{
struct perf_evsel *counter;
float samples_per_sec = top->samples / top->delay_secs;
float ksamples_per_sec = top->kernel_samples / top->delay_secs;
float esamples_percent = (100.0 * top->exact_samples) / top->samples;
size_t ret = 0;
if (!perf_guest) {
ret = snprintf(bf, size,
" 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 {
float us_samples_per_sec = top->us_samples / top->delay_secs;
float guest_kernel_samples_per_sec = top->guest_kernel_samples / top->delay_secs;
float guest_us_samples_per_sec = top->guest_us_samples / top->delay_secs;
ret = snprintf(bf, size,
" 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 (top->evlist->nr_entries == 1 || !top->display_weighted) {
struct perf_evsel *first;
first = list_entry(top->evlist->entries.next, struct perf_evsel, node);
ret += snprintf(bf + ret, size - ret, "%" PRIu64 "%s ",
(uint64_t)first->attr.sample_period,
top->freq ? "Hz" : "");
}
if (!top->display_weighted) {
ret += snprintf(bf + ret, size - ret, "%s",
event_name(top->sym_evsel));
} else list_for_each_entry(counter, &top->evlist->entries, node) {
ret += snprintf(bf + ret, size - ret, "%s%s",
counter->idx ? "/" : "", event_name(counter));
}
ret += snprintf(bf + ret, size - ret, "], ");
if (top->target_pid != -1)
ret += snprintf(bf + ret, size - ret, " (target_pid: %d",
top->target_pid);
else if (top->target_tid != -1)
ret += snprintf(bf + ret, size - ret, " (target_tid: %d",
top->target_tid);
else
ret += snprintf(bf + ret, size - ret, " (all");
if (top->cpu_list)
ret += snprintf(bf + ret, size - ret, ", CPU%s: %s)",
top->evlist->cpus->nr > 1 ? "s" : "", top->cpu_list);
else {
if (top->target_tid != -1)
ret += snprintf(bf + ret, size - ret, ")");
else
ret += snprintf(bf + ret, size - ret, ", %d CPU%s)",
top->evlist->cpus->nr,
top->evlist->cpus->nr > 1 ? "s" : "");
}
return ret;
}
void perf_top__reset_sample_counters(struct perf_top *top)
{
top->samples = top->us_samples = top->kernel_samples =
top->exact_samples = top->guest_kernel_samples =
top->guest_us_samples = 0;
}
float perf_top__decay_samples(struct perf_top *top, struct rb_root *root)
{
struct sym_entry *syme, *n;
float sum_ksamples = 0.0;
int snap = !top->display_weighted ? top->sym_counter : 0, j;
/* Sort the active symbols */
pthread_mutex_lock(&top->active_symbols_lock);
syme = list_entry(top->active_symbols.next, struct sym_entry, node);
pthread_mutex_unlock(&top->active_symbols_lock);
list_for_each_entry_safe_from(syme, n, &top->active_symbols, node) {
syme->snap_count = syme->count[snap];
if (syme->snap_count != 0) {
if ((top->hide_user_symbols &&
syme->origin == PERF_RECORD_MISC_USER) ||
(top->hide_kernel_symbols &&
syme->origin == PERF_RECORD_MISC_KERNEL)) {
perf_top__remove_active_sym(top, syme);
continue;
}
syme->weight = sym_weight(syme, top);
rb_insert_active_sym(root, syme);
sum_ksamples += syme->snap_count;
for (j = 0; j < top->evlist->nr_entries; j++)
syme->count[j] = top->zero ? 0 : syme->count[j] * 7 / 8;
} else
perf_top__remove_active_sym(top, syme);
}
return sum_ksamples;
}
/*
* Find the longest symbol name that will be displayed
*/
void perf_top__find_widths(struct perf_top *top, struct rb_root *root,
int *dso_width, int *dso_short_width, int *sym_width)
{
struct rb_node *nd;
int printed = 0;
*sym_width = *dso_width = *dso_short_width = 0;
for (nd = rb_first(root); nd; nd = rb_next(nd)) {
struct sym_entry *syme = rb_entry(nd, struct sym_entry, rb_node);
if (++printed > top->print_entries ||
(int)syme->snap_count < top->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;
}
}

67
tools/perf/util/top.h Normal file
View File

@ -0,0 +1,67 @@
#ifndef __PERF_TOP_H
#define __PERF_TOP_H 1
#include "types.h"
#include "../perf.h"
#include <stddef.h>
#include <pthread.h>
#include <linux/list.h>
#include <linux/rbtree.h>
struct perf_evlist;
struct perf_evsel;
struct source_line {
u64 eip;
unsigned long count[MAX_COUNTERS]; /* FIXME */
char *line;
struct source_line *next;
};
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];
};
struct perf_top {
struct perf_evlist *evlist;
/*
* Symbols will be added here in perf_event__process_sample and will
* get out after decayed.
*/
struct list_head active_symbols;
pthread_mutex_t active_symbols_lock;
u64 samples;
u64 kernel_samples, us_samples;
u64 exact_samples;
u64 guest_us_samples, guest_kernel_samples;
int print_entries, count_filter, delay_secs;
int display_weighted, freq;
int sym_counter, target_pid, target_tid;
bool hide_kernel_symbols, hide_user_symbols, zero;
const char *cpu_list;
struct perf_evsel *sym_evsel;
};
size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size);
void perf_top__reset_sample_counters(struct perf_top *top);
float perf_top__decay_samples(struct perf_top *top, struct rb_root *root);
void perf_top__find_widths(struct perf_top *top, struct rb_root *root,
int *dso_width, int *dso_short_width, int *sym_width);
#endif /* __PERF_TOP_H */