summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--tools/perf/ui/browsers/hists.c8
-rw-r--r--tools/perf/ui/stdio/hist.c10
-rw-r--r--tools/perf/util/callchain.c49
-rw-r--r--tools/perf/util/callchain.h9
-rw-r--r--tools/perf/util/machine.c88
5 files changed, 85 insertions, 79 deletions
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index f4bc246..13dfb0a 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -931,12 +931,8 @@ static int hist_browser__show_callchain_list(struct hist_browser *browser,
browser->show_dso);
if (symbol_conf.show_branchflag_count) {
- if (need_percent)
- callchain_list_counts__printf_value(node, chain, NULL,
- buf, sizeof(buf));
- else
- callchain_list_counts__printf_value(NULL, chain, NULL,
- buf, sizeof(buf));
+ callchain_list_counts__printf_value(chain, NULL,
+ buf, sizeof(buf));
if (asprintf(&alloc_str2, "%s%s", str, buf) < 0)
str = "Not enough memory!";
diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
index 5c95b83..8bdb7a5 100644
--- a/tools/perf/ui/stdio/hist.c
+++ b/tools/perf/ui/stdio/hist.c
@@ -124,12 +124,8 @@ static size_t ipchain__fprintf_graph(FILE *fp, struct callchain_node *node,
str = callchain_list__sym_name(chain, bf, sizeof(bf), false);
if (symbol_conf.show_branchflag_count) {
- if (!period)
- callchain_list_counts__printf_value(node, chain, NULL,
- buf, sizeof(buf));
- else
- callchain_list_counts__printf_value(NULL, chain, NULL,
- buf, sizeof(buf));
+ callchain_list_counts__printf_value(chain, NULL,
+ buf, sizeof(buf));
if (asprintf(&alloc_str, "%s%s", str, buf) < 0)
str = "Not enough memory!";
@@ -313,7 +309,7 @@ static size_t callchain__fprintf_graph(FILE *fp, struct rb_root *root,
if (symbol_conf.show_branchflag_count)
ret += callchain_list_counts__printf_value(
- NULL, chain, fp, NULL, 0);
+ chain, fp, NULL, 0);
ret += fprintf(fp, "\n");
if (++entries_printed == callchain_param.print_limit)
diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index f320b07..510b513 100644
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -588,7 +588,7 @@ fill_node(struct callchain_node *node, struct callchain_cursor *cursor)
call->cycles_count =
cursor_node->branch_flags.cycles;
call->iter_count = cursor_node->nr_loop_iter;
- call->samples_count = cursor_node->samples;
+ call->iter_cycles = cursor_node->iter_cycles;
}
}
@@ -722,7 +722,7 @@ static enum match_result match_chain(struct callchain_cursor_node *node,
cnode->cycles_count +=
node->branch_flags.cycles;
cnode->iter_count += node->nr_loop_iter;
- cnode->samples_count += node->samples;
+ cnode->iter_cycles += node->iter_cycles;
}
}
@@ -998,7 +998,7 @@ int callchain_merge(struct callchain_cursor *cursor,
int callchain_cursor_append(struct callchain_cursor *cursor,
u64 ip, struct map *map, struct symbol *sym,
bool branch, struct branch_flags *flags,
- int nr_loop_iter, int samples, u64 branch_from)
+ int nr_loop_iter, u64 iter_cycles, u64 branch_from)
{
struct callchain_cursor_node *node = *cursor->last;
@@ -1016,7 +1016,7 @@ int callchain_cursor_append(struct callchain_cursor *cursor,
node->sym = sym;
node->branch = branch;
node->nr_loop_iter = nr_loop_iter;
- node->samples = samples;
+ node->iter_cycles = iter_cycles;
if (flags)
memcpy(&node->branch_flags, flags,
@@ -1306,7 +1306,7 @@ static int branch_to_str(char *bf, int bfsize,
static int branch_from_str(char *bf, int bfsize,
u64 branch_count,
u64 cycles_count, u64 iter_count,
- u64 samples_count)
+ u64 iter_cycles)
{
int printed = 0, i = 0;
u64 cycles;
@@ -1318,9 +1318,13 @@ static int branch_from_str(char *bf, int bfsize,
bf + printed, bfsize - printed);
}
- if (iter_count && samples_count) {
- printed += count_pri64_printf(i++, "iterations",
- iter_count / samples_count,
+ if (iter_count) {
+ printed += count_pri64_printf(i++, "iter",
+ iter_count,
+ bf + printed, bfsize - printed);
+
+ printed += count_pri64_printf(i++, "avg_cycles",
+ iter_cycles / iter_count,
bf + printed, bfsize - printed);
}
@@ -1333,7 +1337,7 @@ static int branch_from_str(char *bf, int bfsize,
static int counts_str_build(char *bf, int bfsize,
u64 branch_count, u64 predicted_count,
u64 abort_count, u64 cycles_count,
- u64 iter_count, u64 samples_count,
+ u64 iter_count, u64 iter_cycles,
struct branch_type_stat *brtype_stat)
{
int printed;
@@ -1346,7 +1350,7 @@ static int counts_str_build(char *bf, int bfsize,
predicted_count, abort_count, brtype_stat);
} else {
printed = branch_from_str(bf, bfsize, branch_count,
- cycles_count, iter_count, samples_count);
+ cycles_count, iter_count, iter_cycles);
}
if (!printed)
@@ -1358,14 +1362,14 @@ static int counts_str_build(char *bf, int bfsize,
static int callchain_counts_printf(FILE *fp, char *bf, int bfsize,
u64 branch_count, u64 predicted_count,
u64 abort_count, u64 cycles_count,
- u64 iter_count, u64 samples_count,
+ u64 iter_count, u64 iter_cycles,
struct branch_type_stat *brtype_stat)
{
char str[256];
counts_str_build(str, sizeof(str), branch_count,
predicted_count, abort_count, cycles_count,
- iter_count, samples_count, brtype_stat);
+ iter_count, iter_cycles, brtype_stat);
if (fp)
return fprintf(fp, "%s", str);
@@ -1373,31 +1377,23 @@ static int callchain_counts_printf(FILE *fp, char *bf, int bfsize,
return scnprintf(bf, bfsize, "%s", str);
}
-int callchain_list_counts__printf_value(struct callchain_node *node,
- struct callchain_list *clist,
+int callchain_list_counts__printf_value(struct callchain_list *clist,
FILE *fp, char *bf, int bfsize)
{
u64 branch_count, predicted_count;
u64 abort_count, cycles_count;
- u64 iter_count = 0, samples_count = 0;
+ u64 iter_count, iter_cycles;
branch_count = clist->branch_count;
predicted_count = clist->predicted_count;
abort_count = clist->abort_count;
cycles_count = clist->cycles_count;
-
- if (node) {
- struct callchain_list *call;
-
- list_for_each_entry(call, &node->val, list) {
- iter_count += call->iter_count;
- samples_count += call->samples_count;
- }
- }
+ iter_count = clist->iter_count;
+ iter_cycles = clist->iter_cycles;
return callchain_counts_printf(fp, bf, bfsize, branch_count,
predicted_count, abort_count,
- cycles_count, iter_count, samples_count,
+ cycles_count, iter_count, iter_cycles,
&clist->brtype_stat);
}
@@ -1523,7 +1519,8 @@ int callchain_cursor__copy(struct callchain_cursor *dst,
rc = callchain_cursor_append(dst, node->ip, node->map, node->sym,
node->branch, &node->branch_flags,
- node->nr_loop_iter, node->samples,
+ node->nr_loop_iter,
+ node->iter_cycles,
node->branch_from);
if (rc)
break;
diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h
index 9773820..1ed6fc6 100644
--- a/tools/perf/util/callchain.h
+++ b/tools/perf/util/callchain.h
@@ -119,7 +119,7 @@ struct callchain_list {
u64 abort_count;
u64 cycles_count;
u64 iter_count;
- u64 samples_count;
+ u64 iter_cycles;
struct branch_type_stat brtype_stat;
char *srcline;
struct list_head list;
@@ -139,7 +139,7 @@ struct callchain_cursor_node {
struct branch_flags branch_flags;
u64 branch_from;
int nr_loop_iter;
- int samples;
+ u64 iter_cycles;
struct callchain_cursor_node *next;
};
@@ -201,7 +201,7 @@ static inline void callchain_cursor_reset(struct callchain_cursor *cursor)
int callchain_cursor_append(struct callchain_cursor *cursor, u64 ip,
struct map *map, struct symbol *sym,
bool branch, struct branch_flags *flags,
- int nr_loop_iter, int samples, u64 branch_from);
+ int nr_loop_iter, u64 iter_cycles, u64 branch_from);
/* Close a cursor writing session. Initialize for the reader */
static inline void callchain_cursor_commit(struct callchain_cursor *cursor)
@@ -282,8 +282,7 @@ char *callchain_node__scnprintf_value(struct callchain_node *node,
int callchain_node__fprintf_value(struct callchain_node *node,
FILE *fp, u64 total);
-int callchain_list_counts__printf_value(struct callchain_node *node,
- struct callchain_list *clist,
+int callchain_list_counts__printf_value(struct callchain_list *clist,
FILE *fp, char *bf, int bfsize);
void free_callchain(struct callchain_root *root);
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 5c8eaca..9eaa953 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1675,6 +1675,11 @@ struct mem_info *sample__resolve_mem(struct perf_sample *sample,
return mi;
}
+struct iterations {
+ int nr_loop_iter;
+ u64 cycles;
+};
+
static int add_callchain_ip(struct thread *thread,
struct callchain_cursor *cursor,
struct symbol **parent,
@@ -1683,11 +1688,12 @@ static int add_callchain_ip(struct thread *thread,
u64 ip,
bool branch,
struct branch_flags *flags,
- int nr_loop_iter,
- int samples,
+ struct iterations *iter,
u64 branch_from)
{
struct addr_location al;
+ int nr_loop_iter = 0;
+ u64 iter_cycles = 0;
al.filtered = 0;
al.sym = NULL;
@@ -1737,9 +1743,15 @@ static int add_callchain_ip(struct thread *thread,
if (symbol_conf.hide_unresolved && al.sym == NULL)
return 0;
+
+ if (iter) {
+ nr_loop_iter = iter->nr_loop_iter;
+ iter_cycles = iter->cycles;
+ }
+
return callchain_cursor_append(cursor, al.addr, al.map, al.sym,
- branch, flags, nr_loop_iter, samples,
- branch_from);
+ branch, flags, nr_loop_iter,
+ iter_cycles, branch_from);
}
struct branch_info *sample__resolve_bstack(struct perf_sample *sample,
@@ -1760,6 +1772,18 @@ struct branch_info *sample__resolve_bstack(struct perf_sample *sample,
return bi;
}
+static void save_iterations(struct iterations *iter,
+ struct branch_entry *be, int nr)
+{
+ int i;
+
+ iter->nr_loop_iter = nr;
+ iter->cycles = 0;
+
+ for (i = 0; i < nr; i++)
+ iter->cycles += be[i].flags.cycles;
+}
+
#define CHASHSZ 127
#define CHASHBITS 7
#define NO_ENTRY 0xff
@@ -1767,7 +1791,8 @@ struct branch_info *sample__resolve_bstack(struct perf_sample *sample,
#define PERF_MAX_BRANCH_DEPTH 127
/* Remove loops. */
-static int remove_loops(struct branch_entry *l, int nr)
+static int remove_loops(struct branch_entry *l, int nr,
+ struct iterations *iter)
{
int i, j, off;
unsigned char chash[CHASHSZ];
@@ -1792,8 +1817,18 @@ static int remove_loops(struct branch_entry *l, int nr)
break;
}
if (is_loop) {
- memmove(l + i, l + i + off,
- (nr - (i + off)) * sizeof(*l));
+ j = nr - (i + off);
+ if (j > 0) {
+ save_iterations(iter + i + off,
+ l + i, off);
+
+ memmove(iter + i, iter + i + off,
+ j * sizeof(*iter));
+
+ memmove(l + i, l + i + off,
+ j * sizeof(*l));
+ }
+
nr -= off;
}
}
@@ -1883,7 +1918,7 @@ static int resolve_lbr_callchain_sample(struct thread *thread,
err = add_callchain_ip(thread, cursor, parent,
root_al, &cpumode, ip,
- branch, flags, 0, 0,
+ branch, flags, NULL,
branch_from);
if (err)
return (err < 0) ? err : 0;
@@ -1909,7 +1944,6 @@ static int thread__resolve_callchain_sample(struct thread *thread,
int i, j, err, nr_entries;
int skip_idx = -1;
int first_call = 0;
- int nr_loop_iter;
if (chain)
chain_nr = chain->nr;
@@ -1942,6 +1976,7 @@ static int thread__resolve_callchain_sample(struct thread *thread,
if (branch && callchain_param.branch_callstack) {
int nr = min(max_stack, (int)branch->nr);
struct branch_entry be[nr];
+ struct iterations iter[nr];
if (branch->nr > PERF_MAX_BRANCH_DEPTH) {
pr_warning("corrupted branch chain. skipping...\n");
@@ -1972,38 +2007,21 @@ static int thread__resolve_callchain_sample(struct thread *thread,
be[i] = branch->entries[branch->nr - i - 1];
}
- nr_loop_iter = nr;
- nr = remove_loops(be, nr);
-
- /*
- * Get the number of iterations.
- * It's only approximation, but good enough in practice.
- */
- if (nr_loop_iter > nr)
- nr_loop_iter = nr_loop_iter - nr + 1;
- else
- nr_loop_iter = 0;
+ memset(iter, 0, sizeof(struct iterations) * nr);
+ nr = remove_loops(be, nr, iter);
for (i = 0; i < nr; i++) {
- if (i == nr - 1)
- err = add_callchain_ip(thread, cursor, parent,
- root_al,
- NULL, be[i].to,
- true, &be[i].flags,
- nr_loop_iter, 1,
- be[i].from);
- else
- err = add_callchain_ip(thread, cursor, parent,
- root_al,
- NULL, be[i].to,
- true, &be[i].flags,
- 0, 0, be[i].from);
+ err = add_callchain_ip(thread, cursor, parent,
+ root_al,
+ NULL, be[i].to,
+ true, &be[i].flags,
+ NULL, be[i].from);
if (!err)
err = add_callchain_ip(thread, cursor, parent, root_al,
NULL, be[i].from,
true, &be[i].flags,
- 0, 0, 0);
+ &iter[i], 0);
if (err == -EINVAL)
break;
if (err)
@@ -2037,7 +2055,7 @@ check_calls:
err = add_callchain_ip(thread, cursor, parent,
root_al, &cpumode, ip,
- false, NULL, 0, 0, 0);
+ false, NULL, NULL, 0);
if (err)
return (err < 0) ? err : 0;
OpenPOWER on IntegriCloud