From: Arnaldo Carvalho de Melo <[email protected]>
Cc: Frédéric Weisbecker <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Paul Mackerras <[email protected]>
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
tools/perf/builtin-top.c | 17 +++++++++++------
1 files changed, 11 insertions(+), 6 deletions(-)
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 6db0e37..0d60c51 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -128,6 +128,11 @@ struct sym_entry {
* Source functions
*/
+static inline struct symbol *sym_entry__symbol(struct sym_entry *self)
+{
+ return (struct symbol *)(self + 1);
+}
+
static void get_term_dimensions(struct winsize *ws)
{
char *s = getenv("LINES");
@@ -181,7 +186,7 @@ static void parse_source(struct sym_entry *syme)
goto out_assign;
}
- sym = (struct symbol *)(syme + 1);
+ sym = sym_entry__symbol(syme);
map = syme->map;
path = map->dso->long_name;
@@ -276,7 +281,7 @@ out_unlock:
static void lookup_sym_source(struct sym_entry *syme)
{
- struct symbol *symbol = (struct symbol *)(syme + 1);
+ struct symbol *symbol = sym_entry__symbol(syme);
struct source_line *line;
char pattern[PATH_MAX];
@@ -325,7 +330,7 @@ static void show_details(struct sym_entry *syme)
if (!syme->source)
return;
- symbol = (struct symbol *)(syme + 1);
+ symbol = sym_entry__symbol(syme);
printf("Showing %s for %s\n", event_name(sym_counter), symbol->name);
printf(" Events Pcnt (>=%d%%)\n", sym_pcnt_filter);
@@ -573,7 +578,7 @@ static void print_sym_table(void)
double pcnt;
syme = rb_entry(nd, struct sym_entry, rb_node);
- sym = (struct symbol *)(syme + 1);
+ sym = sym_entry__symbol(syme);
if (++printed > print_entries || (int)syme->snap_count < count_filter)
continue;
@@ -661,7 +666,7 @@ static void prompt_symbol(struct sym_entry **target, const char *msg)
pthread_mutex_unlock(&active_symbols_lock);
list_for_each_entry_safe_from(syme, n, &active_symbols, node) {
- struct symbol *sym = (struct symbol *)(syme + 1);
+ struct symbol *sym = sym_entry__symbol(syme);
if (!strcmp(buf, sym->name)) {
found = syme;
@@ -685,7 +690,7 @@ static void print_mapped_keys(void)
char *name = NULL;
if (sym_filter_entry) {
- struct symbol *sym = (struct symbol *)(sym_filter_entry+1);
+ struct symbol *sym = sym_entry__symbol(sym_filter_entry);
name = sym->name;
}
--
1.6.2.5
From: Arnaldo Carvalho de Melo <[email protected]>
Reducing memory consumption on a typical desktop machine:
From:
32710 root 20 0 172m 142m 1056 S 0.0 4.7 0:00.37 perf
To:
420 root 20 0 47528 16m 1056 R 0.3 0.5 0:00.24 perf
Cc: Frédéric Weisbecker <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Paul Mackerras <[email protected]>
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
tools/perf/builtin-top.c | 9 +++++----
1 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 0d60c51..49cf876 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -111,7 +111,6 @@ static int display_weighted = -1;
struct sym_entry {
struct rb_node rb_node;
struct list_head node;
- unsigned long count[MAX_COUNTERS];
unsigned long snap_count;
double weight;
int skip;
@@ -122,6 +121,7 @@ struct sym_entry {
struct source_line *lines;
struct source_line **lines_tail;
pthread_mutex_t source_lock;
+ unsigned long count[0];
};
/*
@@ -130,7 +130,7 @@ struct sym_entry {
static inline struct symbol *sym_entry__symbol(struct sym_entry *self)
{
- return (struct symbol *)(self + 1);
+ return ((void *)self) + symbol__priv_size;
}
static void get_term_dimensions(struct winsize *ws)
@@ -1314,8 +1314,6 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
{
int counter;
- symbol__init(sizeof(struct sym_entry));
-
page_size = sysconf(_SC_PAGE_SIZE);
argc = parse_options(argc, argv, options, top_usage, 0);
@@ -1332,6 +1330,9 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
if (!nr_counters)
nr_counters = 1;
+ symbol__init(sizeof(struct sym_entry) +
+ (nr_counters + 1) * sizeof(unsigned long));
+
if (delay_secs < 1)
delay_secs = 1;
--
1.6.2.5
From: Arnaldo Carvalho de Melo <[email protected]>
Defer to parse_source() time allocating it.
Now we use about:
1724 root 20 0 42104 10m 940 S 0.0 0.4 0:00.23 perf
Cc: Frédéric Weisbecker <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Paul Mackerras <[email protected]>
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
tools/perf/builtin-top.c | 76 +++++++++++++++++++++++++++-------------------
1 files changed, 45 insertions(+), 31 deletions(-)
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 49cf876..07b92c3 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -108,6 +108,13 @@ static int display_weighted = -1;
* Symbols
*/
+struct sym_entry_source {
+ struct source_line *source;
+ struct source_line *lines;
+ struct source_line **lines_tail;
+ pthread_mutex_t lock;
+};
+
struct sym_entry {
struct rb_node rb_node;
struct list_head node;
@@ -117,10 +124,7 @@ struct sym_entry {
u16 name_len;
u8 origin;
struct map *map;
- struct source_line *source;
- struct source_line *lines;
- struct source_line **lines_tail;
- pthread_mutex_t source_lock;
+ struct sym_entry_source *src;
unsigned long count[0];
};
@@ -172,6 +176,7 @@ static void sig_winch_handler(int sig __used)
static void parse_source(struct sym_entry *syme)
{
struct symbol *sym;
+ struct sym_entry_source *source;
struct map *map;
FILE *file;
char command[PATH_MAX*2];
@@ -181,8 +186,17 @@ static void parse_source(struct sym_entry *syme)
if (!syme)
return;
- if (syme->lines) {
- pthread_mutex_lock(&syme->source_lock);
+ if (syme->src == NULL) {
+ syme->src = calloc(1, sizeof(*source));
+ if (syme->src == NULL)
+ return;
+ pthread_mutex_init(&syme->src->lock, NULL);
+ }
+
+ source = syme->src;
+
+ if (source->lines) {
+ pthread_mutex_lock(&source->lock);
goto out_assign;
}
@@ -202,8 +216,8 @@ static void parse_source(struct sym_entry *syme)
if (!file)
return;
- pthread_mutex_lock(&syme->source_lock);
- syme->lines_tail = &syme->lines;
+ pthread_mutex_lock(&source->lock);
+ source->lines_tail = &source->lines;
while (!feof(file)) {
struct source_line *src;
size_t dummy = 0;
@@ -223,8 +237,8 @@ static void parse_source(struct sym_entry *syme)
*c = 0;
src->next = NULL;
- *syme->lines_tail = src;
- syme->lines_tail = &src->next;
+ *source->lines_tail = src;
+ source->lines_tail = &src->next;
if (strlen(src->line)>8 && src->line[8] == ':') {
src->eip = strtoull(src->line, NULL, 16);
@@ -238,7 +252,7 @@ static void parse_source(struct sym_entry *syme)
pclose(file);
out_assign:
sym_filter_entry = syme;
- pthread_mutex_unlock(&syme->source_lock);
+ pthread_mutex_unlock(&source->lock);
}
static void __zero_source_counters(struct sym_entry *syme)
@@ -246,7 +260,7 @@ static void __zero_source_counters(struct sym_entry *syme)
int i;
struct source_line *line;
- line = syme->lines;
+ line = syme->src->lines;
while (line) {
for (i = 0; i < nr_counters; i++)
line->count[i] = 0;
@@ -261,13 +275,13 @@ static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip)
if (syme != sym_filter_entry)
return;
- if (pthread_mutex_trylock(&syme->source_lock))
+ if (pthread_mutex_trylock(&syme->src->lock))
return;
- if (!syme->source)
+ if (syme->src == NULL || syme->src->source == NULL)
goto out_unlock;
- for (line = syme->lines; line; line = line->next) {
+ for (line = syme->src->lines; line; line = line->next) {
if (line->eip == ip) {
line->count[counter]++;
break;
@@ -276,7 +290,7 @@ static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip)
break;
}
out_unlock:
- pthread_mutex_unlock(&syme->source_lock);
+ pthread_mutex_unlock(&syme->src->lock);
}
static void lookup_sym_source(struct sym_entry *syme)
@@ -287,14 +301,14 @@ static void lookup_sym_source(struct sym_entry *syme)
sprintf(pattern, "<%s>:", symbol->name);
- pthread_mutex_lock(&syme->source_lock);
- for (line = syme->lines; line; line = line->next) {
+ pthread_mutex_lock(&syme->src->lock);
+ for (line = syme->src->lines; line; line = line->next) {
if (strstr(line->line, pattern)) {
- syme->source = line;
+ syme->src->source = line;
break;
}
}
- pthread_mutex_unlock(&syme->source_lock);
+ pthread_mutex_unlock(&syme->src->lock);
}
static void show_lines(struct source_line *queue, int count, int total)
@@ -324,24 +338,24 @@ static void show_details(struct sym_entry *syme)
if (!syme)
return;
- if (!syme->source)
+ if (!syme->src->source)
lookup_sym_source(syme);
- if (!syme->source)
+ if (!syme->src->source)
return;
symbol = sym_entry__symbol(syme);
printf("Showing %s for %s\n", event_name(sym_counter), symbol->name);
printf(" Events Pcnt (>=%d%%)\n", sym_pcnt_filter);
- pthread_mutex_lock(&syme->source_lock);
- line = syme->source;
+ pthread_mutex_lock(&syme->src->lock);
+ line = syme->src->source;
while (line) {
total += line->count[sym_counter];
line = line->next;
}
- line = syme->source;
+ line = syme->src->source;
while (line) {
float pcnt = 0.0;
@@ -366,7 +380,7 @@ static void show_details(struct sym_entry *syme)
line->count[sym_counter] = zero ? 0 : line->count[sym_counter] * 7 / 8;
line = line->next;
}
- pthread_mutex_unlock(&syme->source_lock);
+ pthread_mutex_unlock(&syme->src->lock);
if (more)
printf("%d lines not displayed, maybe increase display entries [e]\n", more);
}
@@ -647,10 +661,10 @@ static void prompt_symbol(struct sym_entry **target, const char *msg)
/* zero counters of active symbol */
if (syme) {
- pthread_mutex_lock(&syme->source_lock);
+ pthread_mutex_lock(&syme->src->lock);
__zero_source_counters(syme);
*target = NULL;
- pthread_mutex_unlock(&syme->source_lock);
+ pthread_mutex_unlock(&syme->src->lock);
}
fprintf(stdout, "\n%s: ", msg);
@@ -826,10 +840,10 @@ static void handle_keypress(int c)
else {
struct sym_entry *syme = sym_filter_entry;
- pthread_mutex_lock(&syme->source_lock);
+ pthread_mutex_lock(&syme->src->lock);
sym_filter_entry = NULL;
__zero_source_counters(syme);
- pthread_mutex_unlock(&syme->source_lock);
+ pthread_mutex_unlock(&syme->src->lock);
}
break;
case 'U':
@@ -915,7 +929,7 @@ static int symbol_filter(struct map *map, struct symbol *sym)
syme = symbol__priv(sym);
syme->map = map;
- pthread_mutex_init(&syme->source_lock, NULL);
+ syme->src = NULL;
if (!sym_filter_entry && sym_filter && !strcmp(name, sym_filter))
sym_filter_entry = syme;
--
1.6.2.5