static int sym__alloc_hist(struct symbol *self)
{
struct sym_priv *priv = symbol__priv(self);
const int size = (sizeof(*priv->hist) +
(self->end - self->start) * sizeof(u64));
priv->hist = zalloc(size);
return priv->hist == NULL ? -1 : 0;
}
/* Get the filename:line for the colored entries */
static void
get_source_line(struct hist_entry *he, int len, const char *filename)
{
struct symbol *sym = he->sym;
u64 start;
int i;
char cmd[PATH_MAX * 2];
struct sym_ext *sym_ext;
struct sym_priv *priv = symbol__priv(sym);
struct sym_hist *h = priv->hist;
if (!h->sum)
return;
sym_ext = priv->ext = calloc(len, sizeof(struct sym_ext));
if (!priv->ext)
return;
start = he->map->unmap_ip(he->map, sym->start);
for (i = 0; i < len; i++) {
char *path = NULL;
size_t line_len;
u64 offset;
FILE *fp;
sym_ext[i].percent = 100.0 * h->ip[i] / h->sum;
if (sym_ext[i].percent <= 0.5)
continue;
offset = start + i;
sprintf(cmd, "addr2line -e %s %016llx", filename, offset);
fp = popen(cmd, "r");
if (!fp)
continue;
if (getline(&path, &line_len, fp) < 0 || !line_len)
goto next;
sym_ext[i].path = malloc(sizeof(char) * line_len + 1);
if (!sym_ext[i].path)
goto next;
strcpy(sym_ext[i].path, path);
insert_source_line(&sym_ext[i]);
next:
pclose(fp);
}
}
static void free_source_line(struct hist_entry *he, int len)
{
struct sym_priv *priv = symbol__priv(he->sym);
struct sym_ext *sym_ext = priv->ext;
int i;
if (!sym_ext)
return;
for (i = 0; i < len; i++)
free(sym_ext[i].path);
free(sym_ext);
priv->ext = NULL;
root_sym_ext = RB_ROOT;
}
/*
* collect histogram counts
*/
static int annotate__hist_hit(struct hist_entry *he, u64 ip)
{
unsigned int sym_size, offset;
struct symbol *sym = he->sym;
struct sym_priv *priv;
struct sym_hist *h;
he->count++;
if (!sym || !he->map)
return 0;
priv = symbol__priv(sym);
if (priv->hist == NULL && sym__alloc_hist(sym) < 0)
return -ENOMEM;
sym_size = sym->end - sym->start;
offset = ip - sym->start;
if (verbose)
fprintf(stderr, "%s: ip=%Lx\n", __func__,
he->map->unmap_ip(he->map, ip));
if (offset >= sym_size)
return 0;
h = priv->hist;
h->sum++;
h->ip[offset]++;
if (verbose >= 3)
printf("%p %s: count++ [ip: %p, %08Lx] => %Ld\n",
(void *)(unsigned long)he->sym->start,
he->sym->name,
(void *)(unsigned long)ip, ip - he->sym->start,
h->ip[offset]);
return 0;
}
static void perf_session__find_annotations(struct perf_session *self)
{
struct rb_node *nd;
for (nd = rb_first(&self->hists); nd; nd = rb_next(nd)) {
struct hist_entry *he = rb_entry(nd, struct hist_entry, rb_node);
struct sym_priv *priv;
if (he->sym == NULL)
continue;
priv = symbol__priv(he->sym);
if (priv->hist == NULL)
continue;
annotate_sym(he);
/*
* Since we have a hist_entry per IP for the same symbol, free
* he->sym->hist to signal we already processed this symbol.
*/
free(priv->hist);
priv->hist = NULL;
}
}
#include "util/cache.h"
#include "util/debug.h"
#include "util/debugfs.h"
#include "util/evlist.h"
#include "util/parse-options.h"
#include "util/parse-events.h"
#include "util/symbol.h"
#include "util/thread_map.h"
/* XXX There's no support for HW_BREAKPOINT in RHEL6 yet.
#include "../../include/linux/hw_breakpoint.h"
*/
static int vmlinux_matches_kallsyms_filter(struct map *map __used, struct symbol *sym)
{
bool *visited = symbol__priv(sym);
*visited = true;
return 0;
}
static int test__vmlinux_matches_kallsyms(void)
{
int err = -1;
struct rb_node *nd;
struct symbol *sym;
struct map *kallsyms_map, *vmlinux_map;
struct machine kallsyms, vmlinux;
enum map_type type = MAP__FUNCTION;
long page_size = sysconf(_SC_PAGE_SIZE);
struct ref_reloc_sym ref_reloc_sym = { .name = "_stext", };
static int parse_line(FILE *file, struct hist_entry *he, u64 len)
{
struct symbol *sym = he->sym;
char *line = NULL, *tmp, *tmp2;
static const char *prev_line;
static const char *prev_color;
unsigned int offset;
size_t line_len;
u64 start;
s64 line_ip;
int ret;
char *c;
if (getline(&line, &line_len, file) < 0)
return -1;
if (!line)
return -1;
c = strchr(line, '\n');
if (c)
*c = 0;
line_ip = -1;
offset = 0;
ret = -2;
/*
* Strip leading spaces:
*/
tmp = line;
while (*tmp) {
if (*tmp != ' ')
break;
tmp++;
}
if (*tmp) {
/*
* Parse hexa addresses followed by ':'
*/
line_ip = strtoull(tmp, &tmp2, 16);
if (*tmp2 != ':')
line_ip = -1;
}
start = he->map->unmap_ip(he->map, sym->start);
if (line_ip != -1) {
const char *path = NULL;
unsigned int hits = 0;
double percent = 0.0;
const char *color;
struct sym_priv *priv = symbol__priv(sym);
struct sym_ext *sym_ext = priv->ext;
struct sym_hist *h = priv->hist;
offset = line_ip - start;
if (offset < len)
hits = h->ip[offset];
if (offset < len && sym_ext) {
path = sym_ext[offset].path;
percent = sym_ext[offset].percent;
} else if (h->sum)
percent = 100.0 * hits / h->sum;
color = get_percent_color(percent);
/*
* Also color the filename and line if needed, with
* the same color than the percentage. Don't print it
* twice for close colored ip with the same filename:line
*/
if (path) {
if (!prev_line || strcmp(prev_line, path)
|| color != prev_color) {
color_fprintf(stdout, color, " %s", path);
prev_line = path;
prev_color = color;
}
}
color_fprintf(stdout, color, " %7.2f", percent);
printf(" : ");
color_fprintf(stdout, PERF_COLOR_BLUE, "%s\n", line);
} else {
if (!*line)
printf(" :\n");
else
printf(" : %s\n", line);
}
return 0;
}
