forked from Minki/linux
perf_counter tools: Convert builtin-top to use libperf symbol routines
Now both perf top and report use the same routines. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20090528175541.GG4747@ghostprotocols.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Arnaldo Carvalho de Melo
Ingo Molnar
parent
69ee69f63c
commit
de04687f86
@ -44,8 +44,9 @@
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#include "perf.h"
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#include "builtin.h"
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#include "util/symbol.h"
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#include "util/util.h"
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#include "util/util.h"
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#include "util/rbtree.h"
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#include "util/parse-options.h"
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#include "util/parse-events.h"
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@ -125,19 +126,21 @@ static uint64_t min_ip;
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static uint64_t max_ip = -1ll;
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struct sym_entry {
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unsigned long long addr;
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char *sym;
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struct rb_node rb_node;
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struct list_head node;
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unsigned long count[MAX_COUNTERS];
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int skip;
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};
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#define MAX_SYMS 100000
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static int sym_table_count;
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struct sym_entry *sym_filter_entry;
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static struct sym_entry sym_table[MAX_SYMS];
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struct dso *kernel_dso;
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/*
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* Symbols will be added here in record_ip and will get out
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* after decayed.
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*/
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static LIST_HEAD(active_symbols);
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/*
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* Ordering weight: count-1 * count-2 * ... / count-n
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@ -157,41 +160,59 @@ static double sym_weight(const struct sym_entry *sym)
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return weight;
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}
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static int compare(const void *__sym1, const void *__sym2)
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{
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const struct sym_entry *sym1 = __sym1, *sym2 = __sym2;
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return sym_weight(sym1) < sym_weight(sym2);
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}
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static long events;
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static long userspace_events;
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static const char CONSOLE_CLEAR[] = "[H[2J";
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static struct sym_entry tmp[MAX_SYMS];
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static void list_insert_active_sym(struct sym_entry *syme)
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{
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list_add(&syme->node, &active_symbols);
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}
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static void rb_insert_active_sym(struct rb_root *tree, struct sym_entry *se)
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{
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struct rb_node **p = &tree->rb_node;
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struct rb_node *parent = NULL;
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struct sym_entry *iter;
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while (*p != NULL) {
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parent = *p;
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iter = rb_entry(parent, struct sym_entry, rb_node);
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if (sym_weight(se) > sym_weight(iter))
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p = &(*p)->rb_left;
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else
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p = &(*p)->rb_right;
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}
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rb_link_node(&se->rb_node, parent, p);
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rb_insert_color(&se->rb_node, tree);
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}
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static void print_sym_table(void)
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{
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int i, j, active_count, printed;
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int printed, j;
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int counter;
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float events_per_sec = events/delay_secs;
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float kevents_per_sec = (events-userspace_events)/delay_secs;
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float sum_kevents = 0.0;
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struct sym_entry *syme, *n;
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struct rb_root tmp = RB_ROOT;
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struct rb_node *nd;
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events = userspace_events = 0;
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/* Iterate over symbol table and copy/tally/decay active symbols. */
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for (i = 0, active_count = 0; i < sym_table_count; i++) {
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if (sym_table[i].count[0]) {
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tmp[active_count++] = sym_table[i];
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sum_kevents += sym_table[i].count[0];
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/* Sort the active symbols */
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list_for_each_entry_safe(syme, n, &active_symbols, node) {
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if (syme->count[0] != 0) {
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rb_insert_active_sym(&tmp, syme);
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sum_kevents += syme->count[0];
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for (j = 0; j < nr_counters; j++)
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sym_table[i].count[j] = zero ? 0 : sym_table[i].count[j] * 7 / 8;
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syme->count[j] = zero ? 0 : syme->count[j] * 7 / 8;
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} else
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list_del_init(&syme->node);
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}
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}
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qsort(tmp, active_count + 1, sizeof(tmp[0]), compare);
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write(1, CONSOLE_CLEAR, strlen(CONSOLE_CLEAR));
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@ -238,23 +259,25 @@ static void print_sym_table(void)
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" ______ ______ _____ ________________ _______________\n\n"
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);
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for (i = 0, printed = 0; i < active_count; i++) {
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for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) {
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struct sym_entry *syme = rb_entry(nd, struct sym_entry, rb_node);
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struct symbol *sym = (struct symbol *)(syme + 1);
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float pcnt;
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if (++printed > 18 || tmp[i].count[0] < count_filter)
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if (++printed > 18 || syme->count[0] < count_filter)
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break;
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pcnt = 100.0 - (100.0*((sum_kevents-tmp[i].count[0])/sum_kevents));
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pcnt = 100.0 - (100.0 * ((sum_kevents - syme->count[0]) /
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sum_kevents));
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if (nr_counters == 1)
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printf("%19.2f - %4.1f%% - %016llx : %s\n",
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sym_weight(tmp + i),
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pcnt, tmp[i].addr, tmp[i].sym);
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sym_weight(syme),
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pcnt, sym->start, sym->name);
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else
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printf("%8.1f %10ld - %4.1f%% - %016llx : %s\n",
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sym_weight(tmp + i),
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tmp[i].count[0],
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pcnt, tmp[i].addr, tmp[i].sym);
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sym_weight(syme), syme->count[0],
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pcnt, sym->start, sym->name);
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}
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{
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@ -277,146 +300,85 @@ static void *display_thread(void *arg)
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return NULL;
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}
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static int read_symbol(FILE *in, struct sym_entry *s)
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static int symbol_filter(struct dso *self, struct symbol *sym)
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{
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static int filter_match = 0;
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char *sym, stype;
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char str[500];
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int rc, pos;
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static int filter_match;
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struct sym_entry *syme;
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const char *name = sym->name;
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rc = fscanf(in, "%llx %c %499s", &s->addr, &stype, str);
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if (rc == EOF)
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return -1;
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assert(rc == 3);
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/* skip until end of line: */
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pos = strlen(str);
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do {
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rc = fgetc(in);
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if (rc == '\n' || rc == EOF || pos >= 499)
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break;
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str[pos] = rc;
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pos++;
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} while (1);
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str[pos] = 0;
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sym = str;
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/* Filter out known duplicates and non-text symbols. */
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if (!strcmp(sym, "_text"))
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return 1;
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if (!min_ip && !strcmp(sym, "_stext"))
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return 1;
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if (!strcmp(sym, "_etext") || !strcmp(sym, "_sinittext"))
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return 1;
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if (stype != 'T' && stype != 't')
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return 1;
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if (!strncmp("init_module", sym, 11) || !strncmp("cleanup_module", sym, 14))
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return 1;
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if (strstr(sym, "_text_start") || strstr(sym, "_text_end"))
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if (!strcmp(name, "_text") ||
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!strcmp(name, "_etext") ||
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!strcmp(name, "_sinittext") ||
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!strncmp("init_module", name, 11) ||
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!strncmp("cleanup_module", name, 14) ||
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strstr(name, "_text_start") ||
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strstr(name, "_text_end"))
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return 1;
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s->sym = malloc(strlen(str)+1);
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assert(s->sym);
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strcpy((char *)s->sym, str);
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s->skip = 0;
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syme = dso__sym_priv(self, sym);
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/* Tag events to be skipped. */
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if (!strcmp("default_idle", s->sym) || !strcmp("cpu_idle", s->sym))
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s->skip = 1;
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else if (!strcmp("enter_idle", s->sym) || !strcmp("exit_idle", s->sym))
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s->skip = 1;
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else if (!strcmp("mwait_idle", s->sym))
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s->skip = 1;
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if (!strcmp("default_idle", name) ||
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!strcmp("cpu_idle", name) ||
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!strcmp("enter_idle", name) ||
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!strcmp("exit_idle", name) ||
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!strcmp("mwait_idle", name))
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syme->skip = 1;
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if (filter_match == 1) {
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filter_end = s->addr;
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filter_end = sym->start;
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filter_match = -1;
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if (filter_end - filter_start > 10000) {
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printf("hm, too large filter symbol <%s> - skipping.\n",
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fprintf(stderr,
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"hm, too large filter symbol <%s> - skipping.\n",
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sym_filter);
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printf("symbol filter start: %016lx\n", filter_start);
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printf(" end: %016lx\n", filter_end);
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fprintf(stderr, "symbol filter start: %016lx\n",
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filter_start);
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fprintf(stderr, " end: %016lx\n",
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filter_end);
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filter_end = filter_start = 0;
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sym_filter = NULL;
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sleep(1);
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}
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}
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if (filter_match == 0 && sym_filter && !strcmp(s->sym, sym_filter)) {
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if (filter_match == 0 && sym_filter && !strcmp(name, sym_filter)) {
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filter_match = 1;
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filter_start = s->addr;
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filter_start = sym->start;
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}
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return 0;
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}
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static int compare_addr(const void *__sym1, const void *__sym2)
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static int parse_symbols(void)
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{
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const struct sym_entry *sym1 = __sym1, *sym2 = __sym2;
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struct rb_node *node;
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struct symbol *sym;
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return sym1->addr > sym2->addr;
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}
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kernel_dso = dso__new("[kernel]", sizeof(struct sym_entry));
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if (kernel_dso == NULL)
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return -1;
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static void sort_symbol_table(void)
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{
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int i, dups;
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if (dso__load_kernel(kernel_dso, NULL, symbol_filter) != 0)
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goto out_delete_dso;
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do {
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qsort(sym_table, sym_table_count, sizeof(sym_table[0]), compare_addr);
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for (i = 0, dups = 0; i < sym_table_count; i++) {
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if (sym_table[i].addr == sym_table[i+1].addr) {
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sym_table[i+1].addr = -1ll;
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dups++;
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}
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}
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sym_table_count -= dups;
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} while(dups);
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}
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node = rb_first(&kernel_dso->syms);
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sym = rb_entry(node, struct symbol, rb_node);
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min_ip = sym->start;
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static void parse_symbols(void)
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{
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struct sym_entry *last;
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node = rb_last(&kernel_dso->syms);
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sym = rb_entry(node, struct symbol, rb_node);
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max_ip = sym->start;
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FILE *kallsyms = fopen("/proc/kallsyms", "r");
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if (dump_symtab)
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dso__fprintf(kernel_dso, stdout);
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if (!kallsyms) {
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printf("Could not open /proc/kallsyms - no CONFIG_KALLSYMS_ALL=y?\n");
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exit(-1);
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}
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return 0;
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while (!feof(kallsyms)) {
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if (read_symbol(kallsyms, &sym_table[sym_table_count]) == 0) {
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sym_table_count++;
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assert(sym_table_count <= MAX_SYMS);
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}
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}
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sort_symbol_table();
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min_ip = sym_table[0].addr;
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max_ip = sym_table[sym_table_count-1].addr;
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last = sym_table + sym_table_count++;
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last->addr = -1ll;
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last->sym = "<end>";
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if (filter_end) {
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int count;
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for (count=0; count < sym_table_count; count ++) {
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if (!strcmp(sym_table[count].sym, sym_filter)) {
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sym_filter_entry = &sym_table[count];
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break;
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}
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}
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}
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if (dump_symtab) {
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int i;
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for (i = 0; i < sym_table_count; i++)
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fprintf(stderr, "%llx %s\n",
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sym_table[i].addr, sym_table[i].sym);
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}
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out_delete_dso:
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dso__delete(kernel_dso);
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kernel_dso = NULL;
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return -1;
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}
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#define TRACE_COUNT 3
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@ -426,51 +388,20 @@ static void parse_symbols(void)
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*/
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static void record_ip(uint64_t ip, int counter)
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{
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int left_idx, middle_idx, right_idx, idx;
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unsigned long left, middle, right;
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struct symbol *sym = dso__find_symbol(kernel_dso, ip);
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left_idx = 0;
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right_idx = sym_table_count-1;
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assert(ip <= max_ip && ip >= min_ip);
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if (sym != NULL) {
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struct sym_entry *syme = dso__sym_priv(kernel_dso, sym);
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while (left_idx + 1 < right_idx) {
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middle_idx = (left_idx + right_idx) / 2;
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left = sym_table[ left_idx].addr;
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middle = sym_table[middle_idx].addr;
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right = sym_table[ right_idx].addr;
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if (!(left <= middle && middle <= right)) {
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printf("%016lx...\n%016lx...\n%016lx\n", left, middle, right);
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printf("%d %d %d\n", left_idx, middle_idx, right_idx);
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if (!syme->skip) {
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syme->count[counter]++;
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if (list_empty(&syme->node) || !syme->node.next)
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list_insert_active_sym(syme);
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return;
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}
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assert(left <= middle && middle <= right);
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if (!(left <= ip && ip <= right)) {
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printf(" left: %016lx\n", left);
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printf(" ip: %016lx\n", (unsigned long)ip);
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printf("right: %016lx\n", right);
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}
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assert(left <= ip && ip <= right);
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/*
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* [ left .... target .... middle .... right ]
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* => right := middle
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*/
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if (ip < middle) {
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right_idx = middle_idx;
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continue;
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}
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/*
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* [ left .... middle ... target ... right ]
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* => left := middle
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*/
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left_idx = middle_idx;
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}
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idx = left_idx;
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if (!sym_table[idx].skip)
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sym_table[idx].count[counter]++;
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else events--;
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events--;
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}
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static void process_event(uint64_t ip, int counter)
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