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cmd-report.c
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cmd-report.c
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#include <stdio.h>
#include <inttypes.h>
#include <assert.h>
#include "uftrace.h"
#include "utils/utils.h"
#include "utils/rbtree.h"
#include "utils/symbol.h"
#include "utils/list.h"
#include "utils/fstack.h"
enum {
AVG_NONE,
AVG_TOTAL,
AVG_SELF,
AVG_ANY,
} avg_mode = AVG_NONE;
struct trace_entry {
int pid;
struct sym *sym;
uint64_t addr;
uint64_t time_total;
uint64_t time_self;
uint64_t time_recursive;
uint64_t time_avg;
uint64_t time_min;
uint64_t time_max;
unsigned long nr_called;
struct trace_entry *pair;
struct rb_node link;
};
/* this will be used when pair entry wasn't found for diff */
static struct trace_entry dummy_entry;
/* show percentage rather than value of diff */
static bool diff_percent = false;
/* calculate diff using absolute values */
static bool diff_absolute = true;
/* show original data as well as difference */
static bool diff_full = false;
/* maximum length of symbol */
static int maxlen = 20;
static void insert_entry(struct rb_root *root, struct trace_entry *te, bool thread)
{
struct trace_entry *entry;
struct rb_node *parent = NULL;
struct rb_node **p = &root->rb_node;
uint64_t entry_time = 0;
int len = 0;
pr_dbg3("%s: [%5d] %"PRIu64"/%"PRIu64" (%lu) %-s\n",
__func__, te->pid, te->time_total, te->time_self, te->nr_called,
te->sym ? te->sym->name : "<unknown>");
while (*p) {
int cmp;
parent = *p;
entry = rb_entry(parent, struct trace_entry, link);
if (thread)
cmp = te->pid - entry->pid;
else if (te->sym && entry->sym)
cmp = strcmp(te->sym->name, entry->sym->name);
else
cmp = te->addr - entry->addr;
if (cmp == 0) {
entry->time_total += te->time_total;
entry->time_self += te->time_self;
entry->nr_called += te->nr_called;
if (avg_mode == AVG_TOTAL)
entry_time = te->time_total;
else if (avg_mode == AVG_SELF)
entry_time = te->time_self;
if (entry->time_min > entry_time)
entry->time_min = entry_time;
if (entry->time_max < entry_time)
entry->time_max = entry_time;
entry->time_recursive += te->time_recursive;
if (entry->sym == NULL && te->sym) {
entry->sym = te->sym;
if (entry->sym)
len = strlen(entry->sym->name);
if (maxlen < len)
maxlen = len;
}
return;
}
if (cmp < 0)
p = &parent->rb_left;
else
p = &parent->rb_right;
}
entry = xmalloc(sizeof(*entry));
entry->pid = te->pid;
entry->sym = te->sym;
entry->addr = te->addr;
entry->time_total = te->time_total;
entry->time_self = te->time_self;
entry->nr_called = te->nr_called;
entry->pair = NULL;
if (avg_mode == AVG_TOTAL)
entry_time = te->time_total;
else if (avg_mode == AVG_SELF)
entry_time = te->time_self;
entry->time_min = entry_time;
entry->time_max = entry_time;
entry->time_recursive = te->time_recursive;
if (entry->sym)
len = strlen(entry->sym->name);
if (maxlen < len)
maxlen = len;
rb_link_node(&entry->link, parent, p);
rb_insert_color(&entry->link, root);
}
static void fill_entry_sym(struct trace_entry *te,
struct ftrace_task_handle *task,
struct sym *sym, uint64_t addr)
{
int i;
struct fstack *fstack;
fstack = &task->func_stack[task->stack_count];
te->pid = task->tid;
te->sym = sym;
te->addr = addr;
te->time_total = fstack->total_time;
te->time_self = te->time_total - fstack->child_time;
te->nr_called = 1;
/* some LOST entries make invalid self tiem */
if (te->time_self > te->time_total)
te->time_self = te->time_total;
te->time_recursive = 0;
for (i = 0; i < task->stack_count; i++) {
if (addr == task->func_stack[i].addr) {
te->time_recursive = te->time_total;
break;
}
}
}
static bool fill_entry(struct trace_entry *te, struct ftrace_task_handle *task,
uint64_t time, uint64_t addr, struct opts *opts)
{
struct uftrace_session_link *sessions = &task->h->sessions;
struct sym *sym;
sym = task_find_sym_addr(sessions, task, time, addr);
fill_entry_sym(te, task, sym, addr);
return true;
}
static void build_function_tree(struct ftrace_file_handle *handle,
struct rb_root *root, struct opts *opts)
{
struct trace_entry te;
struct uftrace_record *rstack;
struct ftrace_task_handle *task;
struct fstack *fstack;
int i;
while (read_rstack(handle, &task) >= 0 && !uftrace_done) {
rstack = task->rstack;
if (rstack->type != UFTRACE_LOST)
task->timestamp_last = rstack->time;
if (!fstack_check_opts(task, opts))
continue;
if (!fstack_check_filter(task))
continue;
if (rstack->type == UFTRACE_ENTRY)
continue;
if (rstack->type == UFTRACE_EVENT) {
if (rstack->addr == EVENT_ID_PERF_SCHED_IN) {
static struct sym sched_sym = {
.addr = EVENT_ID_PERF_SCHED_IN,
.size = 1,
.type = ST_LOCAL,
.name = "linux:schedule",
};
fill_entry_sym(&te, task, &sched_sym,
sched_sym.addr);
insert_entry(root, &te, false);
}
continue;
}
if (rstack->type == UFTRACE_LOST) {
/* add partial duration of functions before LOST */
while (task->stack_count >= task->user_stack_count) {
fstack = &task->func_stack[task->stack_count];
if (fstack_enabled && fstack->valid &&
!(fstack->flags & FSTACK_FL_NORECORD) &&
fill_entry(&te, task, task->timestamp_last,
fstack->addr, opts)) {
insert_entry(root, &te, false);
}
fstack_exit(task);
task->stack_count--;
}
continue;
}
/* rstack->type == UFTRACE_EXIT */
if (fill_entry(&te, task, rstack->time, rstack->addr, opts))
insert_entry(root, &te, false);
}
if (uftrace_done)
return;
/* add duration of remaining functions */
for (i = 0; i < handle->nr_tasks; i++) {
uint64_t last_time;
task = &handle->tasks[i];
if (task->stack_count == 0)
continue;
last_time = task->rstack->time;
if (handle->time_range.stop)
last_time = handle->time_range.stop;
while (--task->stack_count >= 0) {
fstack = &task->func_stack[task->stack_count];
if (fstack->addr == 0)
continue;
if (fstack->total_time > last_time)
continue;
fstack->total_time = last_time - fstack->total_time;
if (fstack->child_time > fstack->total_time)
fstack->total_time = fstack->child_time;
if (task->stack_count > 0)
fstack[-1].child_time += fstack->total_time;
if (fill_entry(&te, task, last_time, fstack->addr, opts))
insert_entry(root, &te, false);
}
}
}
struct sort_item {
const char *name;
int (*cmp)(struct trace_entry *a, struct trace_entry *b, int column);
int avg_mode;
struct list_head list;
};
#define SORT_ITEM_BASE(_name, _field, _mode) \
static int cmp_##_field(struct trace_entry *a, struct trace_entry *b, \
int sort_column) \
{ \
if (a->_field == b->_field) \
return 0; \
return a->_field > b->_field ? 1 : -1; \
} \
static struct sort_item sort_##_field = { \
.name = _name, \
.cmp = cmp_##_field, \
.avg_mode = _mode, \
LIST_HEAD_INIT(sort_##_field.list) \
}
#define SORT_ITEM_DIFF(_name, _field, _mode) \
static int cmp_diff_##_field(struct trace_entry *a, \
struct trace_entry *b, \
int sort_column) \
{ \
double pcnt_a, pcnt_b; \
int64_t diff_a, diff_b; \
\
if (sort_column != 2) { \
if (a->_field == b->_field) \
return 0; \
return a->_field > b->_field ? 1 : -1; \
} \
\
diff_a = a->pair->_field - a->_field; \
diff_b = b->pair->_field - b->_field; \
\
if (!diff_percent) { \
if (diff_a == diff_b) \
return 0; \
\
if (diff_absolute) { \
diff_a = llabs(diff_a); \
diff_b = llabs(diff_b); \
} \
return diff_a > diff_b ? 1: -1; \
} \
\
pcnt_a = 100.0 * (int64_t) diff_a / a->_field; \
pcnt_b = 100.0 * (int64_t) diff_b / b->_field; \
\
if (pcnt_a == pcnt_b) \
return 0; \
\
if (diff_absolute) { \
pcnt_a = (pcnt_a > 0) ? pcnt_a : -pcnt_a; \
pcnt_b = (pcnt_b > 0) ? pcnt_b : -pcnt_b; \
} \
return pcnt_a > pcnt_b ? 1: -1; \
} \
static struct sort_item sort_diff_##_field = { \
.name = _name "_diff", \
.cmp = cmp_diff_##_field, \
.avg_mode = _mode, \
LIST_HEAD_INIT(sort_diff_##_field.list) \
}
#define SORT_ITEM(_name, _field, _mode) \
SORT_ITEM_BASE(_name, _field, _mode); \
SORT_ITEM_DIFF(_name, _field, _mode) \
/* call count is not shown as percentage */
static int cmp_diff_nr_called(struct trace_entry *a,
struct trace_entry *b,
int sort_column)
{
long call_diff_a, call_diff_b;
double pcnt_a, pcnt_b;
if (sort_column != 2) {
if (a->nr_called == b->nr_called)
return 0;
return a->nr_called > b->nr_called ? 1 : -1;
}
call_diff_a = a->pair->nr_called - a->nr_called;
call_diff_b = b->pair->nr_called - b->nr_called;
if (!diff_percent) {
if (call_diff_a == call_diff_b)
return 0;
if (diff_absolute) {
call_diff_a = llabs(call_diff_a);
call_diff_b = llabs(call_diff_b);
}
return call_diff_a > call_diff_b ? 1 : -1;
}
pcnt_a = 100.0 * call_diff_a / a->nr_called;
pcnt_b = 100.0 * call_diff_b / b->nr_called;
if (pcnt_a == pcnt_b)
return 0;
if (diff_absolute) {
pcnt_a = (pcnt_a > 0) ? pcnt_a : -pcnt_a;
pcnt_b = (pcnt_b > 0) ? pcnt_b : -pcnt_b;
}
return pcnt_a > pcnt_b ? 1 : -1;
}
static struct sort_item sort_diff_nr_called = {
.name = "call_diff",
.cmp = cmp_diff_nr_called,
.avg_mode = AVG_NONE,
LIST_HEAD_INIT(sort_diff_nr_called.list)
};
/* exclude recursive time from total time */
static int cmp_time_total(struct trace_entry *a, struct trace_entry *b,
int sort_column)
{
uint64_t a_time = a->time_total - a->time_recursive;
uint64_t b_time = b->time_total - b->time_recursive;
if (a_time == b_time)
return 0;
return a_time > b_time ? 1 : -1;
}
static struct sort_item sort_time_total = {
.name = "total",
.cmp = cmp_time_total,
.avg_mode = AVG_NONE,
LIST_HEAD_INIT(sort_time_total.list)
};
static int cmp_diff_time_total(struct trace_entry *a, struct trace_entry *b,
int sort_column)
{
uint64_t a_time = a->time_total - a->time_recursive;
uint64_t b_time = b->time_total - b->time_recursive;
uint64_t a_pair_time = a->pair->time_total - a->pair->time_recursive;
uint64_t b_pair_time = b->pair->time_total - b->pair->time_recursive;
int64_t a_diff, b_diff;
double a_pcnt, b_pcnt;
if (sort_column != 2) {
if (a_time == b_time)
return 0;
return a_time > b_time ? 1 : -1;
}
a_diff = a_pair_time - a_time;
b_diff = b_pair_time - b_time;
if (!diff_percent) {
if (a_diff == b_diff)
return 0;
if (diff_absolute) {
a_diff = llabs(a_diff);
b_diff = llabs(b_diff);
}
return a_diff > b_diff ? 1 : -1;
}
a_pcnt = 100.0 * a_diff / a_time;
b_pcnt = 100.0 * b_diff / b_time;
if (a_pcnt == b_pcnt)
return 0;
if (diff_absolute) {
a_pcnt = (a_pcnt > 0) ? a_pcnt : -a_pcnt;
b_pcnt = (b_pcnt > 0) ? b_pcnt : -b_pcnt;
}
return a_pcnt > b_pcnt ? 1 : -1;
}
static struct sort_item sort_diff_time_total = {
.name = "total_diff",
.cmp = cmp_diff_time_total,
.avg_mode = AVG_NONE,
LIST_HEAD_INIT(sort_diff_time_total.list)
};
static int cmp_func_name(struct trace_entry *a, struct trace_entry *b,
int sort_column)
{
return strcmp(b->sym->name, a->sym->name);
}
static struct sort_item sort_func = {
.name = "func",
.cmp = cmp_func_name,
.avg_mode = AVG_ANY,
LIST_HEAD_INIT(sort_func.list),
};
static struct sort_item sort_diff_func = {
.name = "func",
.cmp = cmp_func_name,
.avg_mode = AVG_ANY,
LIST_HEAD_INIT(sort_diff_func.list),
};
//SORT_ITEM("total", time_total, AVG_NONE);
SORT_ITEM("self", time_self, AVG_NONE);
SORT_ITEM_BASE("call", nr_called, AVG_NONE);
SORT_ITEM("avg", time_avg, AVG_TOTAL);
SORT_ITEM("min", time_min, AVG_TOTAL);
SORT_ITEM("max", time_max, AVG_TOTAL);
struct sort_item *all_sort_items[] = {
&sort_time_total,
&sort_time_self,
&sort_nr_called,
&sort_time_avg,
&sort_time_min,
&sort_time_max,
&sort_func,
};
struct sort_item *diff_sort_items[] = {
&sort_diff_time_total,
&sort_diff_time_self,
&sort_diff_nr_called,
&sort_diff_time_avg,
&sort_diff_time_min,
&sort_diff_time_max,
&sort_diff_func,
};
static LIST_HEAD(sort_list);
static LIST_HEAD(diff_sort_list);
static int cmp_entry(struct trace_entry *a, struct trace_entry *b)
{
int ret;
struct sort_item *item;
list_for_each_entry(item, &sort_list, list) {
ret = item->cmp(a, b, 0);
if (ret)
return ret;
}
return 0;
}
static int cmp_diff_entry(struct trace_entry *a, struct trace_entry *b,
int sort_column)
{
int ret;
struct sort_item *item;
struct list_head *sort_list_head = &sort_list;
struct trace_entry *entry_a = a;
struct trace_entry *entry_b = b;
switch (sort_column) {
case 0:
sort_list_head = &sort_list;
entry_a = a;
entry_b = b;
break;
case 1:
sort_list_head = &sort_list;
entry_a = a->pair;
entry_b = b->pair;
break;
case 2:
sort_list_head = &diff_sort_list;
entry_a = a;
entry_b = b;
break;
default:
/* this should not happend */
assert(0);
break;
}
list_for_each_entry(item, sort_list_head, list) {
ret = item->cmp(entry_a, entry_b, sort_column);
if (ret)
return ret;
}
return 0;
}
static void sort_entries(struct rb_root *root, struct trace_entry *te)
{
struct trace_entry *entry;
struct rb_node *parent = NULL;
struct rb_node **p = &root->rb_node;
while (*p) {
parent = *p;
entry = rb_entry(parent, struct trace_entry, link);
if (cmp_entry(entry, te) < 0)
p = &parent->rb_left;
else
p = &parent->rb_right;
}
rb_link_node(&te->link, parent, p);
rb_insert_color(&te->link, root);
}
static void sort_diff_entries(struct rb_root *root, struct trace_entry *te,
int sort_column)
{
struct trace_entry *entry;
struct rb_node *parent = NULL;
struct rb_node **p = &root->rb_node;
while (*p) {
parent = *p;
entry = rb_entry(parent, struct trace_entry, link);
if (cmp_diff_entry(entry, te, sort_column) < 0)
p = &parent->rb_left;
else
p = &parent->rb_right;
}
rb_link_node(&te->link, parent, p);
rb_insert_color(&te->link, root);
}
static void setup_sort(char *sort_keys)
{
struct strv keys = STRV_INIT;
char *k;
unsigned i;
int j;
strv_split(&keys, sort_keys, ",");
strv_for_each(&keys, k, j) {
for (i = 0; i < ARRAY_SIZE(all_sort_items); i++) {
if (strcmp(k, all_sort_items[i]->name))
continue;
if ((all_sort_items[i]->avg_mode != (avg_mode != AVG_NONE)) &&
(all_sort_items[i]->avg_mode != AVG_ANY)) {
pr_out("uftrace: '%s' sort key %s be used with %s or %s.\n",
all_sort_items[i]->name,
avg_mode == AVG_NONE ? "should" : "cannot",
"--avg-total", "--avg-self");
exit(1);
}
list_add_tail(&all_sort_items[i]->list, &sort_list);
list_add_tail(&diff_sort_items[i]->list, &diff_sort_list);
break;
}
if (i == ARRAY_SIZE(all_sort_items)) {
pr_out("uftrace: Unknown sort key '%s'\n", k);
pr_out("uftrace: Possible keys:");
for (i = 0; i < ARRAY_SIZE(all_sort_items); i++)
pr_out(" %s", all_sort_items[i]->name);
pr_out("\n");
exit(1);
}
}
strv_free(&keys);
}
static void print_and_delete(struct rb_root *root,
void (*print_func)(struct trace_entry *))
{
while (!RB_EMPTY_ROOT(root)) {
struct rb_node *node;
struct trace_entry *entry;
node = rb_first(root);
rb_erase(node, root);
entry = rb_entry(node, struct trace_entry, link);
print_func(entry);
if (entry->pair && entry->pair != &dummy_entry)
free(entry->pair);
free(entry);
}
}
static void print_function(struct trace_entry *entry)
{
char *symname = symbol_getname(entry->sym, entry->addr);
if (avg_mode == AVG_NONE) {
pr_out(" ");
print_time_unit(entry->time_total - entry->time_recursive);
pr_out(" ");
print_time_unit(entry->time_self);
pr_out(" %10lu %-s\n", entry->nr_called, symname);
} else {
pr_out(" ");
print_time_unit(entry->time_avg);
pr_out(" ");
print_time_unit(entry->time_min);
pr_out(" ");
print_time_unit(entry->time_max);
pr_out(" %-s\n", symname);
}
symbol_putname(entry->sym, symname);
}
static void report_functions(struct ftrace_file_handle *handle, struct opts *opts)
{
struct rb_root name_tree = RB_ROOT;
struct rb_root sort_tree = RB_ROOT;
const char f_format[] = " %10.10s %10.10s %10.10s %-.*s\n";
const char line[] = "=================================================";
build_function_tree(handle, &name_tree, opts);
while (!RB_EMPTY_ROOT(&name_tree) && !uftrace_done) {
struct rb_node *node;
struct trace_entry *entry;
node = rb_first(&name_tree);
rb_erase(node, &name_tree);
entry = rb_entry(node, struct trace_entry, link);
if (avg_mode == AVG_TOTAL)
entry->time_avg = entry->time_total / entry->nr_called;
else if (avg_mode == AVG_SELF)
entry->time_avg = entry->time_self / entry->nr_called;
sort_entries(&sort_tree, entry);
}
if (uftrace_done)
return;
if (avg_mode == AVG_NONE)
pr_out(f_format, "Total time", "Self time", "Calls", maxlen, "Function");
else if (avg_mode == AVG_TOTAL)
pr_out(f_format, "Avg total", "Min total", "Max total", maxlen, "Function");
else if (avg_mode == AVG_SELF)
pr_out(f_format, "Avg self", "Min self", "Max self", maxlen, "Function");
pr_out(f_format, line, line, line, maxlen, line);
print_and_delete(&sort_tree, print_function);
}
static struct sym * find_task_sym(struct ftrace_file_handle *handle,
struct ftrace_task_handle *task,
struct uftrace_record *rstack)
{
struct sym *sym;
struct ftrace_task_handle *main_task = &handle->tasks[0];
struct uftrace_session *sess = find_task_session(&handle->sessions,
task->tid, rstack->time);
struct symtabs *symtabs = &sess->symtabs;
if (task->func)
return task->func;
if (sess == NULL) {
pr_dbg("cannot find session for tid %d\n", task->tid);
return NULL;
}
if (task == main_task) {
/* This is the main thread */
task->func = sym = find_symname(&symtabs->symtab, "main");
if (sym)
return sym;
pr_dbg("no main thread???\n");
/* fall through */
}
task->func = sym = find_symtabs(symtabs, rstack->addr);
if (sym == NULL)
pr_dbg("cannot find symbol for %lx\n", rstack->addr);
return sym;
}
static void print_thread(struct trace_entry *entry)
{
char *symname = symbol_getname(entry->sym, entry->addr);
pr_out(" %5d ", entry->pid);
print_time_unit(entry->time_self);
pr_out(" %10lu %-s\n", entry->nr_called, symname);
symbol_putname(entry->sym, symname);
}
static void report_threads(struct ftrace_file_handle *handle, struct opts *opts)
{
struct trace_entry te;
struct uftrace_record *rstack;
struct rb_root name_tree = RB_ROOT;
struct ftrace_task_handle *task;
struct fstack *fstack;
const char t_format[] = " %5.5s %10.10s %10.10s %-.*s\n";
const char line[] = "=================================================";
while (read_rstack(handle, &task) >= 0 && !uftrace_done) {
rstack = task->rstack;
if (rstack->type == UFTRACE_ENTRY && task->func)
continue;
if (rstack->type == UFTRACE_LOST)
continue;
/* skip user functions if --kernel-only is set */
if (opts->kernel_only && !is_kernel_record(task, rstack))
continue;
if (opts->kernel_skip_out) {
/* skip kernel functions outside user functions */
if (task->user_stack_count == 0 &&
is_kernel_record(task, rstack))
continue;
}
fstack = &task->func_stack[task->stack_count];
te.pid = task->tid;
te.sym = find_task_sym(handle, task, rstack);
te.addr = rstack->addr;
te.time_recursive = 0;
if (rstack->type == UFTRACE_ENTRY) {
te.time_total = te.time_self = 0;
te.nr_called = 0;
}
else {
te.time_total = fstack->total_time;
te.time_self = te.time_total - fstack->child_time;
te.nr_called = 1;
}
insert_entry(&name_tree, &te, true);
}
if (uftrace_done)
return;
pr_out(t_format, "TID", "Run time", "Num funcs", maxlen, "Start function");
pr_out(t_format, line, line, line, maxlen, line);
print_and_delete(&name_tree, print_thread);
}
struct diff_data {
char *dirname;
struct rb_root root;
struct ftrace_file_handle handle;
};
static void sort_by_name(struct rb_root *root, struct trace_entry *te)
{
struct trace_entry *entry;
struct rb_node *parent = NULL;
struct rb_node **p = &root->rb_node;
int ret;
while (*p) {
parent = *p;
entry = rb_entry(parent, struct trace_entry, link);
if (!entry->sym || !te->sym) {
if (entry->addr < te->addr)
p = &parent->rb_left;
else
p = &parent->rb_right;
continue;
}
ret = strcmp(entry->sym->name, te->sym->name);
if (ret == 0) {
entry->time_total += te->time_total;
entry->time_self += te->time_self;
entry->nr_called += te->nr_called;
if (avg_mode == AVG_TOTAL)
entry->time_avg = entry->time_total / entry->nr_called;
else if (avg_mode == AVG_SELF)
entry->time_avg = entry->time_self / entry->nr_called;
if (entry->time_min > te->time_min)
entry->time_min = te->time_min;
if (entry->time_max < te->time_max)
entry->time_max = te->time_max;
free(te);
return;
};
if (ret < 0)
p = &parent->rb_left;
else
p = &parent->rb_right;
}
rb_link_node(&te->link, parent, p);
rb_insert_color(&te->link, root);
}
static struct trace_entry * find_by_name(struct rb_root *root,
struct trace_entry *base)
{
struct trace_entry *entry;
struct rb_node *parent = NULL;
struct rb_node **p = &root->rb_node;
char *name;
if (base->sym == NULL)
return NULL;
name = base->sym->name;
while (*p) {
parent = *p;
entry = rb_entry(parent, struct trace_entry, link);
if (entry->sym == NULL) {
if (entry->addr < base->addr)
p = &parent->rb_left;
else
p = &parent->rb_right;
continue;
}
if (strcmp(entry->sym->name, name) == 0)
return entry;
if (strcmp(entry->sym->name, name) < 0)
p = &parent->rb_left;
else
p = &parent->rb_right;
}
return NULL;
}
static void sort_function_name(struct rb_root *root_in,
struct rb_root *root_out)
{
struct rb_root no_name = RB_ROOT;
while (!RB_EMPTY_ROOT(root_in) && !uftrace_done) {
struct rb_node *node;
struct trace_entry *entry;
node = rb_first(root_in);
rb_erase(node, root_in);
entry = rb_entry(node, struct trace_entry, link);
if (avg_mode == AVG_TOTAL)
entry->time_avg = entry->time_total / entry->nr_called;
else if (avg_mode == AVG_SELF)
entry->time_avg = entry->time_self / entry->nr_called;
if (entry->sym)
sort_by_name(root_out, entry);
else
insert_entry(&no_name, entry, false);
}
*root_in = no_name;
}
static void calculate_diff(struct rb_root *base, struct rb_root *pair,
struct rb_root *diff, int sort_column)
{
while (!RB_EMPTY_ROOT(base) && !uftrace_done) {
struct rb_node *node;
struct trace_entry *e, *p;
node = rb_first(base);
rb_erase(node, base);
e = rb_entry(node, struct trace_entry, link);
p = find_by_name(pair, e);
if (p != NULL) {
rb_erase(&p->link, pair);
RB_CLEAR_NODE(&p->link);
}
else
p = &dummy_entry;
e->pair = p;
p->pair = e;
sort_diff_entries(diff, e, sort_column);
}
/* sort remaining pair entries with zero entry */
while (!RB_EMPTY_ROOT(pair) && !uftrace_done) {
struct rb_node *node;
struct trace_entry *entry, *zero;
node = rb_first(pair);
rb_erase(node, pair);
entry = rb_entry(node, struct trace_entry, link);
zero = xzalloc(sizeof(*zero));
zero->sym = entry->sym;
zero->addr = entry->addr;
zero->pair = entry;
entry->pair = zero;
sort_diff_entries(diff, zero, sort_column);
}
}