Release 4.10 tools/perf/util/callchain.c
/*
* Copyright (C) 2009-2011, Frederic Weisbecker <fweisbec@gmail.com>
*
* Handle the callchains from the stream in an ad-hoc radix tree and then
* sort them in an rbtree.
*
* Using a radix for code path provides a fast retrieval and factorizes
* memory use. Also that lets us use the paths in a hierarchical graph view.
*
*/
#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>
#include <errno.h>
#include <math.h>
#include "asm/bug.h"
#include "hist.h"
#include "util.h"
#include "sort.h"
#include "machine.h"
#include "callchain.h"
__thread struct callchain_cursor callchain_cursor;
int parse_callchain_record_opt(const char *arg, struct callchain_param *param)
{
return parse_callchain_record(arg, param);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 15 | 65.22% | 1 | 25.00% |
| kan liang | kan liang | 8 | 34.78% | 3 | 75.00% |
| Total | 23 | 100.00% | 4 | 100.00% |
static int parse_callchain_mode(const char *value)
{
if (!strncmp(value, "graph", strlen(value))) {
callchain_param.mode = CHAIN_GRAPH_ABS;
return 0;
}
if (!strncmp(value, "flat", strlen(value))) {
callchain_param.mode = CHAIN_FLAT;
return 0;
}
if (!strncmp(value, "fractal", strlen(value))) {
callchain_param.mode = CHAIN_GRAPH_REL;
return 0;
}
if (!strncmp(value, "folded", strlen(value))) {
callchain_param.mode = CHAIN_FOLDED;
return 0;
}
return -1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| don zickus | don zickus | 60 | 50.42% | 1 | 25.00% |
| namhyung kim | namhyung kim | 59 | 49.58% | 3 | 75.00% |
| Total | 119 | 100.00% | 4 | 100.00% |
static int parse_callchain_order(const char *value)
{
if (!strncmp(value, "caller", strlen(value))) {
callchain_param.order = ORDER_CALLER;
callchain_param.order_set = true;
return 0;
}
if (!strncmp(value, "callee", strlen(value))) {
callchain_param.order = ORDER_CALLEE;
callchain_param.order_set = true;
return 0;
}
return -1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 46 | 58.23% | 2 | 66.67% |
| don zickus | don zickus | 33 | 41.77% | 1 | 33.33% |
| Total | 79 | 100.00% | 3 | 100.00% |
static int parse_callchain_sort_key(const char *value)
{
if (!strncmp(value, "function", strlen(value))) {
callchain_param.key = CCKEY_FUNCTION;
return 0;
}
if (!strncmp(value, "address", strlen(value))) {
callchain_param.key = CCKEY_ADDRESS;
return 0;
}
if (!strncmp(value, "branch", strlen(value))) {
callchain_param.branch_callstack = 1;
return 0;
}
return -1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 35 | 37.63% | 1 | 33.33% |
| don zickus | don zickus | 32 | 34.41% | 1 | 33.33% |
| andi kleen | andi kleen | 26 | 27.96% | 1 | 33.33% |
| Total | 93 | 100.00% | 3 | 100.00% |
static int parse_callchain_value(const char *value)
{
if (!strncmp(value, "percent", strlen(value))) {
callchain_param.value = CCVAL_PERCENT;
return 0;
}
if (!strncmp(value, "period", strlen(value))) {
callchain_param.value = CCVAL_PERIOD;
return 0;
}
if (!strncmp(value, "count", strlen(value))) {
callchain_param.value = CCVAL_COUNT;
return 0;
}
return -1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 93 | 100.00% | 1 | 100.00% |
| Total | 93 | 100.00% | 1 | 100.00% |
static int
__parse_callchain_report_opt(const char *arg, bool allow_record_opt)
{
char *tok;
char *endptr;
bool minpcnt_set = false;
bool record_opt_set = false;
bool try_stack_size = false;
callchain_param.enabled = true;
symbol_conf.use_callchain = true;
if (!arg)
return 0;
while ((tok = strtok((char *)arg, ",")) != NULL) {
if (!strncmp(tok, "none", strlen(tok))) {
callchain_param.mode = CHAIN_NONE;
callchain_param.enabled = false;
symbol_conf.use_callchain = false;
return 0;
}
if (!parse_callchain_mode(tok) ||
!parse_callchain_order(tok) ||
!parse_callchain_sort_key(tok) ||
!parse_callchain_value(tok)) {
/* parsing ok - move on to the next */
try_stack_size = false;
goto next;
} else if (allow_record_opt && !record_opt_set) {
if (parse_callchain_record(tok, &callchain_param))
goto try_numbers;
/* assume that number followed by 'dwarf' is stack size */
if (callchain_param.record_mode == CALLCHAIN_DWARF)
try_stack_size = true;
record_opt_set = true;
goto next;
}
try_numbers:
if (try_stack_size) {
unsigned long size = 0;
if (get_stack_size(tok, &size) < 0)
return -1;
callchain_param.dump_size = size;
try_stack_size = false;
} else if (!minpcnt_set) {
/* try to get the min percent */
callchain_param.min_percent = strtod(tok, &endptr);
if (tok == endptr)
return -1;
minpcnt_set = true;
} else {
/* try print limit at last */
callchain_param.print_limit = strtoul(tok, &endptr, 0);
if (tok == endptr)
return -1;
}
next:
arg = NULL;
}
if (callchain_register_param(&callchain_param) < 0) {
pr_err("Can't register callchain params\n");
return -1;
}
return 0;
}
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| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 269 | 82.01% | 4 | 66.67% |
| don zickus | don zickus | 47 | 14.33% | 1 | 16.67% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 12 | 3.66% | 1 | 16.67% |
| Total | 328 | 100.00% | 6 | 100.00% |
int parse_callchain_report_opt(const char *arg)
{
return __parse_callchain_report_opt(arg, false);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 18 | 100.00% | 1 | 100.00% |
| Total | 18 | 100.00% | 1 | 100.00% |
int parse_callchain_top_opt(const char *arg)
{
return __parse_callchain_report_opt(arg, true);
}
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| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 18 | 100.00% | 1 | 100.00% |
| Total | 18 | 100.00% | 1 | 100.00% |
int perf_callchain_config(const char *var, const char *value)
{
char *endptr;
if (prefixcmp(var, "call-graph."))
return 0;
var += sizeof("call-graph.") - 1;
if (!strcmp(var, "record-mode"))
return parse_callchain_record_opt(value, &callchain_param);
if (!strcmp(var, "dump-size")) {
unsigned long size = 0;
int ret;
ret = get_stack_size(value, &size);
callchain_param.dump_size = size;
return ret;
}
if (!strcmp(var, "print-type"))
return parse_callchain_mode(value);
if (!strcmp(var, "order"))
return parse_callchain_order(value);
if (!strcmp(var, "sort-key"))
return parse_callchain_sort_key(value);
if (!strcmp(var, "threshold")) {
callchain_param.min_percent = strtod(value, &endptr);
if (value == endptr)
return -1;
}
if (!strcmp(var, "print-limit")) {
callchain_param.print_limit = strtod(value, &endptr);
if (value == endptr)
return -1;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 215 | 98.62% | 1 | 50.00% |
| kan liang | kan liang | 3 | 1.38% | 1 | 50.00% |
| Total | 218 | 100.00% | 2 | 100.00% |
static void
rb_insert_callchain(struct rb_root *root, struct callchain_node *chain,
enum chain_mode mode)
{
struct rb_node **p = &root->rb_node;
struct rb_node *parent = NULL;
struct callchain_node *rnode;
u64 chain_cumul = callchain_cumul_hits(chain);
while (*p) {
u64 rnode_cumul;
parent = *p;
rnode = rb_entry(parent, struct callchain_node, rb_node);
rnode_cumul = callchain_cumul_hits(rnode);
switch (mode) {
case CHAIN_FLAT:
case CHAIN_FOLDED:
if (rnode->hit < chain->hit)
p = &(*p)->rb_left;
else
p = &(*p)->rb_right;
break;
case CHAIN_GRAPH_ABS: /* Falldown */
case CHAIN_GRAPH_REL:
if (rnode_cumul < chain_cumul)
p = &(*p)->rb_left;
else
p = &(*p)->rb_right;
break;
case CHAIN_NONE:
default:
break;
}
}
rb_link_node(&chain->rb_node, parent, p);
rb_insert_color(&chain->rb_node, root);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| frederic weisbecker | frederic weisbecker | 185 | 96.86% | 5 | 71.43% |
| ingo molnar | ingo molnar | 3 | 1.57% | 1 | 14.29% |
| namhyung kim | namhyung kim | 3 | 1.57% | 1 | 14.29% |
| Total | 191 | 100.00% | 7 | 100.00% |
static void
__sort_chain_flat(struct rb_root *rb_root, struct callchain_node *node,
u64 min_hit)
{
struct rb_node *n;
struct callchain_node *child;
n = rb_first(&node->rb_root_in);
while (n) {
child = rb_entry(n, struct callchain_node, rb_node_in);
n = rb_next(n);
__sort_chain_flat(rb_root, child, min_hit);
}
if (node->hit && node->hit >= min_hit)
rb_insert_callchain(rb_root, node, CHAIN_FLAT);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| frederic weisbecker | frederic weisbecker | 57 | 60.64% | 4 | 80.00% |
| namhyung kim | namhyung kim | 37 | 39.36% | 1 | 20.00% |
| Total | 94 | 100.00% | 5 | 100.00% |
/*
* Once we get every callchains from the stream, we can now
* sort them by hit
*/
static void
sort_chain_flat(struct rb_root *rb_root, struct callchain_root *root,
u64 min_hit, struct callchain_param *param __maybe_unused)
{
*rb_root = RB_ROOT;
__sort_chain_flat(rb_root, &root->node, min_hit);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| frederic weisbecker | frederic weisbecker | 36 | 85.71% | 3 | 60.00% |
| namhyung kim | namhyung kim | 5 | 11.90% | 1 | 20.00% |
| irina tirdea | irina tirdea | 1 | 2.38% | 1 | 20.00% |
| Total | 42 | 100.00% | 5 | 100.00% |
static void __sort_chain_graph_abs(struct callchain_node *node,
u64 min_hit)
{
struct rb_node *n;
struct callchain_node *child;
node->rb_root = RB_ROOT;
n = rb_first(&node->rb_root_in);
while (n) {
child = rb_entry(n, struct callchain_node, rb_node_in);
n = rb_next(n);
__sort_chain_graph_abs(child, min_hit);
if (callchain_cumul_hits(child) >= min_hit)
rb_insert_callchain(&node->rb_root, child,
CHAIN_GRAPH_ABS);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| frederic weisbecker | frederic weisbecker | 57 | 61.29% | 5 | 83.33% |
| namhyung kim | namhyung kim | 36 | 38.71% | 1 | 16.67% |
| Total | 93 | 100.00% | 6 | 100.00% |
static void
sort_chain_graph_abs(struct rb_root *rb_root, struct callchain_root *chain_root,
u64 min_hit, struct callchain_param *param __maybe_unused)
{
__sort_chain_graph_abs(&chain_root->node, min_hit);
rb_root->rb_node = chain_root->node.rb_root.rb_node;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| frederic weisbecker | frederic weisbecker | 46 | 97.87% | 5 | 83.33% |
| irina tirdea | irina tirdea | 1 | 2.13% | 1 | 16.67% |
| Total | 47 | 100.00% | 6 | 100.00% |
static void __sort_chain_graph_rel(struct callchain_node *node,
double min_percent)
{
struct rb_node *n;
struct callchain_node *child;
u64 min_hit;
node->rb_root = RB_ROOT;
min_hit = ceil(node->children_hit * min_percent);
n = rb_first(&node->rb_root_in);
while (n) {
child = rb_entry(n, struct callchain_node, rb_node_in);
n = rb_next(n);
__sort_chain_graph_rel(child, min_percent);
if (callchain_cumul_hits(child) >= min_hit)
rb_insert_callchain(&node->rb_root, child,
CHAIN_GRAPH_REL);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| frederic weisbecker | frederic weisbecker | 71 | 66.36% | 4 | 80.00% |
| namhyung kim | namhyung kim | 36 | 33.64% | 1 | 20.00% |
| Total | 107 | 100.00% | 5 | 100.00% |
static void
sort_chain_graph_rel(struct rb_root *rb_root, struct callchain_root *chain_root,
u64 min_hit __maybe_unused, struct callchain_param *param)
{
__sort_chain_graph_rel(&chain_root->node, param->min_percent / 100.0);
rb_root->rb_node = chain_root->node.rb_root.rb_node;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| frederic weisbecker | frederic weisbecker | 50 | 98.04% | 3 | 75.00% |
| irina tirdea | irina tirdea | 1 | 1.96% | 1 | 25.00% |
| Total | 51 | 100.00% | 4 | 100.00% |
int callchain_register_param(struct callchain_param *param)
{
switch (param->mode) {
case CHAIN_GRAPH_ABS:
param->sort = sort_chain_graph_abs;
break;
case CHAIN_GRAPH_REL:
param->sort = sort_chain_graph_rel;
break;
case CHAIN_FLAT:
case CHAIN_FOLDED:
param->sort = sort_chain_flat;
break;
case CHAIN_NONE:
default:
return -1;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| frederic weisbecker | frederic weisbecker | 56 | 90.32% | 2 | 50.00% |
| ingo molnar | ingo molnar | 3 | 4.84% | 1 | 25.00% |
| namhyung kim | namhyung kim | 3 | 4.84% | 1 | 25.00% |
| Total | 62 | 100.00% | 4 | 100.00% |
/*
* Create a child for a parent. If inherit_children, then the new child
* will become the new parent of it's parent children
*/
static struct callchain_node *
create_child(struct callchain_node *parent, bool inherit_children)
{
struct callchain_node *new;
new = zalloc(sizeof(*new));
if (!new) {
perror("not enough memory to create child for code path tree");
return NULL;
}
new->parent = parent;
INIT_LIST_HEAD(&new->val);
INIT_LIST_HEAD(&new->parent_val);
if (inherit_children) {
struct rb_node *n;
struct callchain_node *child;
new->rb_root_in = parent->rb_root_in;
parent->rb_root_in = RB_ROOT;
n = rb_first(&new->rb_root_in);
while (n) {
child = rb_entry(n, struct callchain_node, rb_node_in);
child->parent = new;
n = rb_next(n);
}
/* make it the first child */
rb_link_node(&new->rb_node_in, NULL, &parent->rb_root_in.rb_node);
rb_insert_color(&new->rb_node_in, &parent->rb_root_in);
}
return new;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| frederic weisbecker | frederic weisbecker | 100 | 57.47% | 2 | 40.00% |
| namhyung kim | namhyung kim | 73 | 41.95% | 2 | 40.00% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 1 | 0.57% | 1 | 20.00% |
| Total | 174 | 100.00% | 5 | 100.00% |
/*
* Fill the node with callchain values
*/
static int
fill_node(struct callchain_node *node, struct callchain_cursor *cursor)
{
struct callchain_cursor_node *cursor_node;
node->val_nr = cursor->nr - cursor->pos;
if (!node->val_nr)
pr_warning("Warning: empty node in callchain tree\n");
cursor_node = callchain_cursor_current(cursor);
while (cursor_node) {
struct callchain_list *call;
call = zalloc(sizeof(*call));
if (!call) {
perror("not enough memory for the code path tree");
return -1;
}
call->ip = cursor_node->ip;
call->ms.sym = cursor_node->sym;
call->ms.map = map__get(cursor_node->map);
if (cursor_node->branch) {
call->branch_count = 1;
if (cursor_node->branch_flags.predicted)
call->predicted_count = 1;
if (cursor_node->branch_flags.abort)
call->abort_count = 1;
call->cycles_count = cursor_node->branch_flags.cycles;
call->iter_count = cursor_node->nr_loop_iter;
call->samples_count = cursor_node->samples;
}
list_add_tail(&call->list, &node->val);
callchain_cursor_advance(cursor);
cursor_node = callchain_cursor_current(cursor);
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| frederic weisbecker | frederic weisbecker | 135 | 62.21% | 6 | 54.55% |
| jin yao | jin yao | 68 | 31.34% | 1 | 9.09% |
| namhyung kim | namhyung kim | 8 | 3.69% | 1 | 9.09% |
| krister johansen | krister johansen | 3 | 1.38% | 1 | 9.09% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 3 | 1.38% | 2 | 18.18% |
| Total | 217 | 100.00% | 11 | 100.00% |
static struct callchain_node *
add_child(struct callchain_node *parent,
struct callchain_cursor *cursor,
u64 period)
{
struct callchain_node *new;
new = create_child(parent, false);
if (new == NULL)
return NULL;
if (fill_node(new, cursor) < 0) {
struct callchain_list *call, *tmp;
list_for_each_entry_safe(call, tmp, &new->val, list) {
list_del(&call->list);
map__zput(call->ms.map);
free(call);
}
free(new);
return NULL;
}
new->children_hit = 0;
new->hit = period;
new->children_count = 0;
new->count = 1;
return new;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 75 | 55.97% | 4 | 36.36% |
| frederic weisbecker | frederic weisbecker | 50 | 37.31% | 6 | 54.55% |
| krister johansen | krister johansen | 9 | 6.72% | 1 | 9.09% |
| Total | 134 | 100.00% | 11 | 100.00% |
enum match_result {
MATCH_ERROR = -1,
MATCH_EQ,
MATCH_LT,
MATCH_GT,
};
static enum match_result match_chain(struct callchain_cursor_node *node,
struct callchain_list *cnode)
{
struct symbol *sym = node->sym;
u64 left, right;
if (cnode->ms.sym && sym &&
callchain_param.key == CCKEY_FUNCTION) {
left = cnode->ms.sym->start;
right = sym->start;
} else {
left = cnode->ip;
right = node->ip;
}
if (left == right) {
if (node->branch) {
cnode->branch_count++;
if (node->branch_flags.predicted)
cnode->predicted_count++;
if (node->branch_flags.abort)
cnode->abort_count++;
cnode->cycles_count += node->branch_flags.cycles;
cnode->iter_count += node->nr_loop_iter;
cnode->samples_count += node->samples;
}
return MATCH_EQ;
}
return left > right ? MATCH_GT : MATCH_LT;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 97 | 58.79% | 2 | 50.00% |
| jin yao | jin yao | 67 | 40.61% | 1 | 25.00% |
| frederic weisbecker | frederic weisbecker | 1 | 0.61% | 1 | 25.00% |
| Total | 165 | 100.00% | 4 | 100.00% |
/*
* Split the parent in two parts (a new child is created) and
* give a part of its callchain to the created child.
* Then create another child to host the given callchain of new branch
*/
static int
split_add_child(struct callchain_node *parent,
struct callchain_cursor *cursor,
struct callchain_list *to_split,
u64 idx_parents, u64 idx_local, u64 period)
{
struct callchain_node *new;
struct list_head *old_tail;
unsigned int idx_total = idx_parents + idx_local;
/* split */
new = create_child(parent, true);
if (new == NULL)
return -1;
/* split the callchain and move a part to the new child */
old_tail = parent->val.prev;
list_del_range(&to_split->list, old_tail);
new->val.next = &to_split->list;
new->val.prev = old_tail;
to_split->list.prev = &new->val;
old_tail->next = &new->val;
/* split the hits */
new->hit = parent->hit;
new->children_hit = parent->children_hit;
parent->children_hit = callchain_cumul_hits(new);
new->val_nr = parent->val_nr - idx_local;
parent->val_nr = idx_local;
new->count = parent->count;
new->children_count = parent->children_count;
parent->children_count = callchain_cumul_counts(new);
/* create a new child for the new branch if any */
if (idx_total < cursor->nr) {
struct callchain_node *first;
struct callchain_list *cnode;
struct callchain_cursor_node *node;
struct rb_node *p, **pp;
parent->hit = 0;
parent->children_hit += period;
parent->count = 0;
parent->children_count += 1;
node = callchain_cursor_current(cursor);
new = add_child(parent, cursor, period);
if (new == NULL)
return -1;
/*
* This is second child since we moved parent's children
* to new (first) child above.
*/
p = parent->rb_root_in.rb_node;
first = rb_entry(p, struct callchain_node, rb_node_in);
cnode = list_first_entry(&first->val, struct callchain_list,
list);
if (match_chain(node, cnode) == MATCH_LT)
pp = &p->rb_left;
else
pp = &p->rb_right;
rb_link_node(&new->rb_node_in, p, pp);
rb_insert_color(&new->rb_node_in, &parent->rb_root_in);
} else {
parent->hit = period;
parent->count = 1;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 195 | 50.65% | 5 | 38.46% |
| frederic weisbecker | frederic weisbecker | 189 | 49.09% | 7 | 53.85% |
| ingo molnar | ingo molnar | 1 | 0.26% | 1 | 7.69% |
| Total | 385 | 100.00% | 13 | 100.00% |
static enum match_result
append_chain(struct callchain_node *root,
struct callchain_cursor *cursor,
u64 period);
static int
append_chain_children(struct callchain_node *root,
struct callchain_cursor *cursor,
u64 period)
{
struct callchain_node *rnode;
struct callchain_cursor_node *node;
struct rb_node **p = &root->rb_root_in.rb_node;
struct rb_node *parent = NULL;
node = callchain_cursor_current(cursor);
if (!node)
return -1;
/* lookup in childrens */
while (*p) {
enum match_result ret;
parent = *p;
rnode = rb_entry(parent, struct callchain_node, rb_node_in);
/* If at least first entry matches, rely to children */
ret = append_chain(rnode, cursor, period);
if (ret == MATCH_EQ)
goto inc_children_hit;
if (ret == MATCH_ERROR)
return -1;
if (ret == MATCH_LT)
p = &parent->rb_left;
else
p = &parent->rb_right;
}
/* nothing in children, add to the current node */
rnode = add_child(root, cursor, period);
if (rnode == NULL)
return -1;
rb_link_node(&rnode->rb_node_in, parent, p);
rb_insert_color(&rnode->rb_node_in, &root->rb_root_in);
inc_children_hit:
root->children_hit += period;
root->children_count++;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 154 | 73.68% | 5 | 38.46% |
| frederic weisbecker | frederic weisbecker | 55 | 26.32% | 8 | 61.54% |
| Total | 209 | 100.00% | 13 | 100.00% |
static enum match_result
append_chain(struct callchain_node *root,
struct callchain_cursor *cursor,
u64 period)
{
struct callchain_list *cnode;
u64 start = cursor->pos;
bool found = false;
u64 matches;
enum match_result cmp = MATCH_ERROR;
/*
* Lookup in the current node
* If we have a symbol, then compare the start to match
* anywhere inside a function, unless function
* mode is disabled.
*/
list_for_each_entry(cnode, &root->val, list) {
struct callchain_cursor_node *node;
node = callchain_cursor_current(cursor);
if (!node)
break;
cmp = match_chain(node, cnode);
if (cmp != MATCH_EQ)
break;
found = true;
callchain_cursor_advance(cursor);
}
/* matches not, relay no the parent */
if (!found) {
WARN_ONCE(cmp == MATCH_ERROR, "Chain comparison error\n");
return cmp;
}
matches = cursor->pos - start;
/* we match only a part of the node. Split it and add the new chain */
if (matches < root->val_nr) {
if (split_add_child(root, cursor, cnode, start, matches,
period) < 0)
return MATCH_ERROR;
return MATCH_EQ;
}
/* we match 100% of the path, increment the hit */
if (matches == root->val_nr && cursor->pos == cursor->nr) {
root->hit += period;
root->count++;
return MATCH_EQ;
}
/* We match the node and still have a part remaining */
if (append_chain_children(root, cursor, period) < 0)
return MATCH_ERROR;
return MATCH_EQ;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| frederic weisbecker | frederic weisbecker | 177 | 81.57% | 7 | 53.85% |
| namhyung kim | namhyung kim | 39 | 17.97% | 5 | 38.46% |
| andi kleen | andi kleen | 1 | 0.46% | 1 | 7.69% |
| Total | 217 | 100.00% | 13 | 100.00% |
int callchain_append(struct callchain_root *root,
struct callchain_cursor *cursor,
u64 period)
{
if (!cursor->nr)
return 0;
callchain_cursor_commit(cursor);
if (append_chain_children(&root->node, cursor, period) < 0)
return -1;
if (cursor->nr > root->max_depth)
root->max_depth = cursor->nr;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| frederic weisbecker | frederic weisbecker | 65 | 87.84% | 8 | 88.89% |
| namhyung kim | namhyung kim | 9 | 12.16% | 1 | 11.11% |
| Total | 74 | 100.00% | 9 | 100.00% |
static int
merge_chain_branch(struct callchain_cursor *cursor,
struct callchain_node *dst, struct callchain_node *src)
{
struct callchain_cursor_node **old_last = cursor->last;
struct callchain_node *child;
struct callchain_list *list, *next_list;
struct rb_node *n;
int old_pos = cursor->nr;
int err = 0;
list_for_each_entry_safe(list, next_list, &src->val, list) {
callchain_cursor_append(cursor, list->ip,
list->ms.map, list->ms.sym,
false, NULL, 0, 0);
list_del(&list->list);
map__zput(list->ms.map);
free(list);
}
if (src->hit) {
callchain_cursor_commit(cursor);
if (append_chain_children(dst, cursor, src->hit) < 0)
return -1;
}
n = rb_first(&src->rb_root_in);
while (n) {
child = container_of(n, struct callchain_node, rb_node_in);
n = rb_next(n);
rb_erase(&child->rb_node_in, &src->rb_root_in);
err = merge_chain_branch(cursor, dst, child);
if (err)
break;
free(child);
}
cursor->nr = old_pos;
cursor->last = old_last;
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| frederic weisbecker | frederic weisbecker | 166 | 69.17% | 2 | 33.33% |
| namhyung kim | namhyung kim | 57 | 23.75% | 2 | 33.33% |
| krister johansen | krister johansen | 9 | 3.75% | 1 | 16.67% |
| jin yao | jin yao | 8 | 3.33% | 1 | 16.67% |
| Total | 240 | 100.00% | 6 | 100.00% |
int callchain_merge(struct callchain_cursor *cursor,
struct callchain_root *dst, struct callchain_root *src)
{
return merge_chain_branch(cursor, &dst->node, &src->node);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| frederic weisbecker | frederic weisbecker | 36 | 100.00% | 2 | 100.00% |
| Total | 36 | 100.00% | 2 | 100.00% |
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)
{
struct callchain_cursor_node *node = *cursor->last;
if (!node) {
node = calloc(1, sizeof(*node));
if (!node)
return -ENOMEM;
*cursor->last = node;
}
node->ip = ip;
map__zput(node->map);
node->map = map__get(map);
node->sym = sym;
node->branch = branch;
node->nr_loop_iter = nr_loop_iter;
node->samples = samples;
if (flags)
memcpy(&node->branch_flags, flags,
sizeof(struct branch_flags));
cursor->nr++;
cursor->last = &node->next;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| frederic weisbecker | frederic weisbecker | 102 | 61.45% | 2 | 40.00% |
| jin yao | jin yao | 52 | 31.33% | 1 | 20.00% |
| krister johansen | krister johansen | 10 | 6.02% | 1 | 20.00% |
| paul gortmaker | paul gortmaker | 2 | 1.20% | 1 | 20.00% |
| Total | 166 | 100.00% | 5 | 100.00% |
int sample__resolve_callchain(struct perf_sample *sample,
struct callchain_cursor *cursor, struct symbol **parent,
struct perf_evsel *evsel, struct addr_location *al,
int max_stack)
{
if (sample->callchain == NULL)
return 0;
if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain ||
perf_hpp_list.parent) {
return thread__resolve_callchain(al->thread, cursor, evsel, sample,
parent, al, max_stack);
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 72 | 85.71% | 2 | 40.00% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 9 | 10.71% | 2 | 40.00% |
| jiri olsa | jiri olsa | 3 | 3.57% | 1 | 20.00% |
| Total | 84 | 100.00% | 5 | 100.00% |
int hist_entry__append_callchain(struct hist_entry *he, struct perf_sample *sample)
{
if (!symbol_conf.use_callchain || sample->callchain == NULL)
return 0;
return callchain_append(he->callchain, &callchain_cursor, sample->period);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 40 | 86.96% | 1 | 50.00% |
| adrian hunter | adrian hunter | 6 | 13.04% | 1 | 50.00% |
| Total | 46 | 100.00% | 2 | 100.00% |
int fill_callchain_info(struct addr_location *al, struct callchain_cursor_node *node,
bool hide_unresolved)
{
al->map = node->map;
al->sym = node->sym;
if (node->map)
al->addr = node->map->map_ip(node->map, node->ip);
else
al->addr = node->ip;
if (al->sym == NULL) {
if (hide_unresolved)
return 0;
if (al->map == NULL)
goto out;
}
if (al->map->groups == &al->machine->kmaps) {
if (machine__is_host(al->machine)) {
al->cpumode = PERF_RECORD_MISC_KERNEL;
al->level = 'k';
} else {
al->cpumode = PERF_RECORD_MISC_GUEST_KERNEL;
al->level = 'g';
}
} else {
if (machine__is_host(al->machine)) {
al->cpumode = PERF_RECORD_MISC_USER;
al->level = '.';
} else if (perf_guest) {
al->cpumode = PERF_RECORD_MISC_GUEST_USER;
al->level = 'u';
} else {
al->cpumode = PERF_RECORD_MISC_HYPERVISOR;
al->level = 'H';
}
}
out:
return 1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 216 | 100.00% | 1 | 100.00% |
| Total | 216 | 100.00% | 1 | 100.00% |
char *callchain_list__sym_name(struct callchain_list *cl,
char *bf, size_t bfsize, bool show_dso)
{
int printed;
if (cl->ms.sym) {
if (callchain_param.key == CCKEY_ADDRESS &&
cl->ms.map && !cl->srcline)
cl->srcline = get_srcline(cl->ms.map->dso,
map__rip_2objdump(cl->ms.map,
cl->ip),
cl->ms.sym, false);
if (cl->srcline)
printed = scnprintf(bf, bfsize, "%s %s",
cl->ms.sym->name, cl->srcline);
else
printed = scnprintf(bf, bfsize, "%s", cl->ms.sym->name);
} else
printed = scnprintf(bf, bfsize, "%#" PRIx64, cl->ip);
if (show_dso)
scnprintf(bf + printed, bfsize - printed, " %s",
cl->ms.map ?
cl->ms.map->dso->short_name :
"unknown");
return bf;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| andi kleen | andi kleen | 193 | 100.00% | 3 | 100.00% |
| Total | 193 | 100.00% | 3 | 100.00% |
char *callchain_node__scnprintf_value(struct callchain_node *node,
char *bf, size_t bfsize, u64 total)
{
double percent = 0.0;
u64 period = callchain_cumul_hits(node);
unsigned count = callchain_cumul_counts(node);
if (callchain_param.mode == CHAIN_FOLDED) {
period = node->hit;
count = node->count;
}
switch (callchain_param.value) {
case CCVAL_PERIOD:
scnprintf(bf, bfsize, "%"PRIu64, period);
break;
case CCVAL_COUNT:
scnprintf(bf, bfsize, "%u", count);
break;
case CCVAL_PERCENT:
default:
if (total)
percent = period * 100.0 / total;
scnprintf(bf, bfsize, "%.2f%%", percent);
break;
}
return bf;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 134 | 100.00% | 2 | 100.00% |
| Total | 134 | 100.00% | 2 | 100.00% |
int callchain_node__fprintf_value(struct callchain_node *node,
FILE *fp, u64 total)
{
double percent = 0.0;
u64 period = callchain_cumul_hits(node);
unsigned count = callchain_cumul_counts(node);
if (callchain_param.mode == CHAIN_FOLDED) {
period = node->hit;
count = node->count;
}
switch (callchain_param.value) {
case CCVAL_PERIOD:
return fprintf(fp, "%"PRIu64, period);
case CCVAL_COUNT:
return fprintf(fp, "%u", count);
case CCVAL_PERCENT:
default:
if (total)
percent = period * 100.0 / total;
return percent_color_fprintf(fp, "%.2f%%", percent);
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 124 | 100.00% | 2 | 100.00% |
| Total | 124 | 100.00% | 2 | 100.00% |
static void callchain_counts_value(struct callchain_node *node,
u64 *branch_count, u64 *predicted_count,
u64 *abort_count, u64 *cycles_count)
{
struct callchain_list *clist;
list_for_each_entry(clist, &node->val, list) {
if (branch_count)
*branch_count += clist->branch_count;
if (predicted_count)
*predicted_count += clist->predicted_count;
if (abort_count)
*abort_count += clist->abort_count;
if (cycles_count)
*cycles_count += clist->cycles_count;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jin yao | jin yao | 86 | 100.00% | 1 | 100.00% |
| Total | 86 | 100.00% | 1 | 100.00% |
static int callchain_node_branch_counts_cumul(struct callchain_node *node,
u64 *branch_count,
u64 *predicted_count,
u64 *abort_count,
u64 *cycles_count)
{
struct callchain_node *child;
struct rb_node *n;
n = rb_first(&node->rb_root_in);
while (n) {
child = rb_entry(n, struct callchain_node, rb_node_in);
n = rb_next(n);
callchain_node_branch_counts_cumul(child, branch_count,
predicted_count,
abort_count,
cycles_count);
callchain_counts_value(child, branch_count,
predicted_count, abort_count,
cycles_count);
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jin yao | jin yao | 101 | 100.00% | 1 | 100.00% |
| Total | 101 | 100.00% | 1 | 100.00% |
int callchain_branch_counts(struct callchain_root *root,
u64 *branch_count, u64 *predicted_count,
u64 *abort_count, u64 *cycles_count)
{
if (branch_count)
*branch_count = 0;
if (predicted_count)
*predicted_count = 0;
if (abort_count)
*abort_count = 0;
if (cycles_count)
*cycles_count = 0;
return callchain_node_branch_counts_cumul(&root->node,
branch_count,
predicted_count,
abort_count,
cycles_count);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jin yao | jin yao | 79 | 100.00% | 1 | 100.00% |
| Total | 79 | 100.00% | 1 | 100.00% |
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)
{
double predicted_percent = 0.0;
const char *null_str = "";
char iter_str[32];
char *str;
u64 cycles = 0;
if (branch_count == 0) {
if (fp)
return fprintf(fp, " (calltrace)");
return scnprintf(bf, bfsize, " (calltrace)");
}
if (iter_count && samples_count) {
scnprintf(iter_str, sizeof(iter_str),
", iterations:%" PRId64 "",
iter_count / samples_count);
str = iter_str;
} else
str = (char *)null_str;
predicted_percent = predicted_count * 100.0 / branch_count;
cycles = cycles_count / branch_count;
if ((predicted_percent >= 100.0) && (abort_count == 0)) {
if (fp)
return fprintf(fp, " (cycles:%" PRId64 "%s)",
cycles, str);
return scnprintf(bf, bfsize, " (cycles:%" PRId64 "%s)",
cycles, str);
}
if ((predicted_percent < 100.0) && (abort_count == 0)) {
if (fp)
return fprintf(fp,
" (predicted:%.1f%%, cycles:%" PRId64 "%s)",
predicted_percent, cycles, str);
return scnprintf(bf, bfsize,
" (predicted:%.1f%%, cycles:%" PRId64 "%s)",
predicted_percent, cycles, str);
}
if (fp)
return fprintf(fp,
" (predicted:%.1f%%, abort:%" PRId64 ", cycles:%" PRId64 "%s)",
predicted_percent, abort_count, cycles, str);
return scnprintf(bf, bfsize,
" (predicted:%.1f%%, abort:%" PRId64 ", cycles:%" PRId64 "%s)",
predicted_percent, abort_count, cycles, str);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jin yao | jin yao | 295 | 100.00% | 1 | 100.00% |
| Total | 295 | 100.00% | 1 | 100.00% |
int callchain_list_counts__printf_value(struct callchain_node *node,
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;
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;
}
}
return callchain_counts_printf(fp, bf, bfsize, branch_count,
predicted_count, abort_count,
cycles_count, iter_count, samples_count);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jin yao | jin yao | 124 | 100.00% | 1 | 100.00% |
| Total | 124 | 100.00% | 1 | 100.00% |
static void free_callchain_node(struct callchain_node *node)
{
struct callchain_list *list, *tmp;
struct callchain_node *child;
struct rb_node *n;
list_for_each_entry_safe(list, tmp, &node->parent_val, list) {
list_del(&list->list);
map__zput(list->ms.map);
free(list);
}
list_for_each_entry_safe(list, tmp, &node->val, list) {
list_del(&list->list);
map__zput(list->ms.map);
free(list);
}
n = rb_first(&node->rb_root_in);
while (n) {
child = container_of(n, struct callchain_node, rb_node_in);
n = rb_next(n);
rb_erase(&child->rb_node_in, &node->rb_root_in);
free_callchain_node(child);
free(child);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 137 | 88.39% | 2 | 66.67% |
| krister johansen | krister johansen | 18 | 11.61% | 1 | 33.33% |
| Total | 155 | 100.00% | 3 | 100.00% |
void free_callchain(struct callchain_root *root)
{
if (!symbol_conf.use_callchain)
return;
free_callchain_node(&root->node);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 26 | 100.00% | 2 | 100.00% |
| Total | 26 | 100.00% | 2 | 100.00% |
static u64 decay_callchain_node(struct callchain_node *node)
{
struct callchain_node *child;
struct rb_node *n;
u64 child_hits = 0;
n = rb_first(&node->rb_root_in);
while (n) {
child = container_of(n, struct callchain_node, rb_node_in);
child_hits += decay_callchain_node(child);
n = rb_next(n);
}
node->hit = (node->hit * 7) / 8;
node->children_hit = child_hits;
return node->hit;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 93 | 100.00% | 1 | 100.00% |
| Total | 93 | 100.00% | 1 | 100.00% |
void decay_callchain(struct callchain_root *root)
{
if (!symbol_conf.use_callchain)
return;
decay_callchain_node(&root->node);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 26 | 100.00% | 2 | 100.00% |
| Total | 26 | 100.00% | 2 | 100.00% |
int callchain_node__make_parent_list(struct callchain_node *node)
{
struct callchain_node *parent = node->parent;
struct callchain_list *chain, *new;
LIST_HEAD(head);
while (parent) {
list_for_each_entry_reverse(chain, &parent->val, list) {
new = malloc(sizeof(*new));
if (new == NULL)
goto out;
*new = *chain;
new->has_children = false;
map__get(new->ms.map);
list_add_tail(&new->list, &head);
}
parent = parent->parent;
}
list_for_each_entry_safe_reverse(chain, new, &head, list)
list_move_tail(&chain->list, &node->parent_val);
if (!list_empty(&node->parent_val)) {
chain = list_first_entry(&node->parent_val, struct callchain_list, list);
chain->has_children = rb_prev(&node->rb_node) || rb_next(&node->rb_node);
chain = list_first_entry(&node->val, struct callchain_list, list);
chain->has_children = false;
}
return 0;
out:
list_for_each_entry_safe(chain, new, &head, list) {
list_del(&chain->list);
map__zput(chain->ms.map);
free(chain);
}
return -ENOMEM;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 223 | 92.53% | 1 | 50.00% |
| krister johansen | krister johansen | 18 | 7.47% | 1 | 50.00% |
| Total | 241 | 100.00% | 2 | 100.00% |
int callchain_cursor__copy(struct callchain_cursor *dst,
struct callchain_cursor *src)
{
int rc = 0;
callchain_cursor_reset(dst);
callchain_cursor_commit(src);
while (true) {
struct callchain_cursor_node *node;
node = callchain_cursor_current(src);
if (node == NULL)
break;
rc = callchain_cursor_append(dst, node->ip, node->map, node->sym,
node->branch, &node->branch_flags,
node->nr_loop_iter, node->samples);
if (rc)
break;
callchain_cursor_advance(src);
}
return rc;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 104 | 100.00% | 1 | 100.00% |
| Total | 104 | 100.00% | 1 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| namhyung kim | namhyung kim | 2818 | 47.79% | 24 | 35.29% |
| frederic weisbecker | frederic weisbecker | 1677 | 28.44% | 20 | 29.41% |
| jin yao | jin yao | 880 | 14.92% | 2 | 2.94% |
| andi kleen | andi kleen | 223 | 3.78% | 5 | 7.35% |
| don zickus | don zickus | 172 | 2.92% | 1 | 1.47% |
| krister johansen | krister johansen | 67 | 1.14% | 1 | 1.47% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 28 | 0.47% | 6 | 8.82% |
| kan liang | kan liang | 11 | 0.19% | 3 | 4.41% |
| ingo molnar | ingo molnar | 7 | 0.12% | 2 | 2.94% |
| adrian hunter | adrian hunter | 6 | 0.10% | 1 | 1.47% |
| jiri olsa | jiri olsa | 3 | 0.05% | 1 | 1.47% |
| irina tirdea | irina tirdea | 3 | 0.05% | 1 | 1.47% |
| paul gortmaker | paul gortmaker | 2 | 0.03% | 1 | 1.47% |
| Total | 5897 | 100.00% | 68 | 100.00% |
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