M7350/kernel/tools/perf/util/ui/browsers/annotate.c
2024-09-09 08:52:07 +00:00

434 lines
11 KiB
C

#include "../../util.h"
#include "../browser.h"
#include "../helpline.h"
#include "../libslang.h"
#include "../ui.h"
#include "../util.h"
#include "../../annotate.h"
#include "../../hist.h"
#include "../../sort.h"
#include "../../symbol.h"
#include <pthread.h>
#include <newt.h>
struct annotate_browser {
struct ui_browser b;
struct rb_root entries;
struct rb_node *curr_hot;
struct objdump_line *selection;
int nr_asm_entries;
int nr_entries;
bool hide_src_code;
};
struct objdump_line_rb_node {
struct rb_node rb_node;
double percent;
u32 idx;
int idx_asm;
};
static inline
struct objdump_line_rb_node *objdump_line__rb(struct objdump_line *self)
{
return (struct objdump_line_rb_node *)(self + 1);
}
static bool objdump_line__filter(struct ui_browser *browser, void *entry)
{
struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
if (ab->hide_src_code) {
struct objdump_line *ol = list_entry(entry, struct objdump_line, node);
return ol->offset == -1;
}
return false;
}
static void annotate_browser__write(struct ui_browser *self, void *entry, int row)
{
struct annotate_browser *ab = container_of(self, struct annotate_browser, b);
struct objdump_line *ol = list_entry(entry, struct objdump_line, node);
bool current_entry = ui_browser__is_current_entry(self, row);
int width = self->width;
if (ol->offset != -1) {
struct objdump_line_rb_node *olrb = objdump_line__rb(ol);
ui_browser__set_percent_color(self, olrb->percent, current_entry);
slsmg_printf(" %7.2f ", olrb->percent);
} else {
ui_browser__set_percent_color(self, 0, current_entry);
slsmg_write_nstring(" ", 9);
}
SLsmg_write_char(':');
slsmg_write_nstring(" ", 8);
/* The scroll bar isn't being used */
if (!self->navkeypressed)
width += 1;
if (!ab->hide_src_code && ol->offset != -1)
if (!current_entry || (self->use_navkeypressed &&
!self->navkeypressed))
ui_browser__set_color(self, HE_COLORSET_CODE);
if (!*ol->line)
slsmg_write_nstring(" ", width - 18);
else
slsmg_write_nstring(ol->line, width - 18);
if (current_entry)
ab->selection = ol;
}
static double objdump_line__calc_percent(struct objdump_line *self,
struct symbol *sym, int evidx)
{
double percent = 0.0;
if (self->offset != -1) {
int len = sym->end - sym->start;
unsigned int hits = 0;
struct annotation *notes = symbol__annotation(sym);
struct source_line *src_line = notes->src->lines;
struct sym_hist *h = annotation__histogram(notes, evidx);
s64 offset = self->offset;
struct objdump_line *next;
next = objdump__get_next_ip_line(&notes->src->source, self);
while (offset < (s64)len &&
(next == NULL || offset < next->offset)) {
if (src_line) {
percent += src_line[offset].percent;
} else
hits += h->addr[offset];
++offset;
}
/*
* If the percentage wasn't already calculated in
* symbol__get_source_line, do it now:
*/
if (src_line == NULL && h->sum)
percent = 100.0 * hits / h->sum;
}
return percent;
}
static void objdump__insert_line(struct rb_root *self,
struct objdump_line_rb_node *line)
{
struct rb_node **p = &self->rb_node;
struct rb_node *parent = NULL;
struct objdump_line_rb_node *l;
while (*p != NULL) {
parent = *p;
l = rb_entry(parent, struct objdump_line_rb_node, rb_node);
if (line->percent < l->percent)
p = &(*p)->rb_left;
else
p = &(*p)->rb_right;
}
rb_link_node(&line->rb_node, parent, p);
rb_insert_color(&line->rb_node, self);
}
static void annotate_browser__set_top(struct annotate_browser *self,
struct rb_node *nd)
{
struct objdump_line_rb_node *rbpos;
struct objdump_line *pos;
unsigned back;
ui_browser__refresh_dimensions(&self->b);
back = self->b.height / 2;
rbpos = rb_entry(nd, struct objdump_line_rb_node, rb_node);
pos = ((struct objdump_line *)rbpos) - 1;
self->b.top_idx = self->b.index = rbpos->idx;
while (self->b.top_idx != 0 && back != 0) {
pos = list_entry(pos->node.prev, struct objdump_line, node);
--self->b.top_idx;
--back;
}
self->b.top = pos;
self->curr_hot = nd;
}
static void annotate_browser__calc_percent(struct annotate_browser *browser,
int evidx)
{
struct map_symbol *ms = browser->b.priv;
struct symbol *sym = ms->sym;
struct annotation *notes = symbol__annotation(sym);
struct objdump_line *pos;
browser->entries = RB_ROOT;
pthread_mutex_lock(&notes->lock);
list_for_each_entry(pos, &notes->src->source, node) {
struct objdump_line_rb_node *rbpos = objdump_line__rb(pos);
rbpos->percent = objdump_line__calc_percent(pos, sym, evidx);
if (rbpos->percent < 0.01) {
RB_CLEAR_NODE(&rbpos->rb_node);
continue;
}
objdump__insert_line(&browser->entries, rbpos);
}
pthread_mutex_unlock(&notes->lock);
browser->curr_hot = rb_last(&browser->entries);
}
static bool annotate_browser__toggle_source(struct annotate_browser *browser)
{
struct objdump_line *ol;
struct objdump_line_rb_node *olrb;
off_t offset = browser->b.index - browser->b.top_idx;
browser->b.seek(&browser->b, offset, SEEK_CUR);
ol = list_entry(browser->b.top, struct objdump_line, node);
olrb = objdump_line__rb(ol);
if (browser->hide_src_code) {
if (olrb->idx_asm < offset)
offset = olrb->idx;
browser->b.nr_entries = browser->nr_entries;
browser->hide_src_code = false;
browser->b.seek(&browser->b, -offset, SEEK_CUR);
browser->b.top_idx = olrb->idx - offset;
browser->b.index = olrb->idx;
} else {
if (olrb->idx_asm < 0) {
ui_helpline__puts("Only available for assembly lines.");
browser->b.seek(&browser->b, -offset, SEEK_CUR);
return false;
}
if (olrb->idx_asm < offset)
offset = olrb->idx_asm;
browser->b.nr_entries = browser->nr_asm_entries;
browser->hide_src_code = true;
browser->b.seek(&browser->b, -offset, SEEK_CUR);
browser->b.top_idx = olrb->idx_asm - offset;
browser->b.index = olrb->idx_asm;
}
return true;
}
static int annotate_browser__run(struct annotate_browser *self, int evidx,
void(*timer)(void *arg),
void *arg, int delay_secs)
{
struct rb_node *nd = NULL;
struct map_symbol *ms = self->b.priv;
struct symbol *sym = ms->sym;
const char *help = "<-/ESC: Exit, TAB/shift+TAB: Cycle hot lines, "
"H: Go to hottest line, ->/ENTER: Line action, "
"S: Toggle source code view";
int key;
if (ui_browser__show(&self->b, sym->name, help) < 0)
return -1;
annotate_browser__calc_percent(self, evidx);
if (self->curr_hot)
annotate_browser__set_top(self, self->curr_hot);
nd = self->curr_hot;
while (1) {
key = ui_browser__run(&self->b, delay_secs);
if (delay_secs != 0) {
annotate_browser__calc_percent(self, evidx);
/*
* Current line focus got out of the list of most active
* lines, NULL it so that if TAB|UNTAB is pressed, we
* move to curr_hot (current hottest line).
*/
if (nd != NULL && RB_EMPTY_NODE(nd))
nd = NULL;
}
switch (key) {
case K_TIMER:
if (timer != NULL)
timer(arg);
if (delay_secs != 0)
symbol__annotate_decay_histogram(sym, evidx);
continue;
case K_TAB:
if (nd != NULL) {
nd = rb_prev(nd);
if (nd == NULL)
nd = rb_last(&self->entries);
} else
nd = self->curr_hot;
break;
case K_UNTAB:
if (nd != NULL)
nd = rb_next(nd);
if (nd == NULL)
nd = rb_first(&self->entries);
else
nd = self->curr_hot;
break;
case 'H':
case 'h':
nd = self->curr_hot;
break;
case 'S':
case 's':
if (annotate_browser__toggle_source(self))
ui_helpline__puts(help);
continue;
case K_ENTER:
case K_RIGHT:
if (self->selection == NULL) {
ui_helpline__puts("Huh? No selection. Report to linux-kernel@vger.kernel.org");
continue;
}
if (self->selection->offset == -1) {
ui_helpline__puts("Actions are only available for assembly lines.");
continue;
} else {
char *s = strstr(self->selection->line, "callq ");
struct annotation *notes;
struct symbol *target;
u64 ip;
if (s == NULL) {
ui_helpline__puts("Actions are only available for the 'callq' instruction.");
continue;
}
s = strchr(s, ' ');
if (s++ == NULL) {
ui_helpline__puts("Invallid callq instruction.");
continue;
}
ip = strtoull(s, NULL, 16);
ip = ms->map->map_ip(ms->map, ip);
target = map__find_symbol(ms->map, ip, NULL);
if (target == NULL) {
ui_helpline__puts("The called function was not found.");
continue;
}
notes = symbol__annotation(target);
pthread_mutex_lock(&notes->lock);
if (notes->src == NULL && symbol__alloc_hist(target) < 0) {
pthread_mutex_unlock(&notes->lock);
ui__warning("Not enough memory for annotating '%s' symbol!\n",
target->name);
continue;
}
pthread_mutex_unlock(&notes->lock);
symbol__tui_annotate(target, ms->map, evidx,
timer, arg, delay_secs);
ui_browser__show_title(&self->b, sym->name);
}
continue;
case K_LEFT:
case K_ESC:
case 'q':
case CTRL('c'):
goto out;
default:
continue;
}
if (nd != NULL)
annotate_browser__set_top(self, nd);
}
out:
ui_browser__hide(&self->b);
return key;
}
int hist_entry__tui_annotate(struct hist_entry *he, int evidx,
void(*timer)(void *arg), void *arg, int delay_secs)
{
return symbol__tui_annotate(he->ms.sym, he->ms.map, evidx,
timer, arg, delay_secs);
}
int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx,
void(*timer)(void *arg), void *arg,
int delay_secs)
{
struct objdump_line *pos, *n;
struct annotation *notes;
struct map_symbol ms = {
.map = map,
.sym = sym,
};
struct annotate_browser browser = {
.b = {
.refresh = ui_browser__list_head_refresh,
.seek = ui_browser__list_head_seek,
.write = annotate_browser__write,
.filter = objdump_line__filter,
.priv = &ms,
.use_navkeypressed = true,
},
};
int ret;
if (sym == NULL)
return -1;
if (map->dso->annotate_warned)
return -1;
if (symbol__annotate(sym, map, sizeof(struct objdump_line_rb_node)) < 0) {
ui__error("%s", ui_helpline__last_msg);
return -1;
}
ui_helpline__push("Press <- or ESC to exit");
notes = symbol__annotation(sym);
list_for_each_entry(pos, &notes->src->source, node) {
struct objdump_line_rb_node *rbpos;
size_t line_len = strlen(pos->line);
if (browser.b.width < line_len)
browser.b.width = line_len;
rbpos = objdump_line__rb(pos);
rbpos->idx = browser.nr_entries++;
if (pos->offset != -1)
rbpos->idx_asm = browser.nr_asm_entries++;
else
rbpos->idx_asm = -1;
}
browser.b.nr_entries = browser.nr_entries;
browser.b.entries = &notes->src->source,
browser.b.width += 18; /* Percentage */
ret = annotate_browser__run(&browser, evidx, timer, arg, delay_secs);
list_for_each_entry_safe(pos, n, &notes->src->source, node) {
list_del(&pos->node);
objdump_line__free(pos);
}
return ret;
}