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perf/core improvements and fixes: 

User visible:
 
 - Fix perf.data size reporting in 'perf record' in no-buildid mode (He Kuang)
 
 Infrastructure:
 
 - Protect accesses the dso rbtrees/lists with a rw lock and reference
   count struct dso instances (Arnaldo Carvalho de Melo)
 
 - Export dynamic symbols used by traceevent plugins (He Kuang)
 
 - Add libtrace-dynamic-list file to libtraceevent's .gitignore (He Kuang)
 
 - Refactor shadow stats code in 'perf stat', prep work for further
   patchkits (Jiri Olsa)
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

User visible changes:

  - Fix perf.data size reporting in 'perf record' in no-buildid mode (He Kuang)

Infrastructure changes:

  - Protect accesses the DSO rbtrees/lists with a rw lock and reference
    count struct dso instances (Arnaldo Carvalho de Melo)

  - Export dynamic symbols used by traceevent plugins (He Kuang)

  - Add libtrace-dynamic-list file to libtraceevent's .gitignore (He Kuang)

  - Refactor shadow stats code in 'perf stat', prep work for further
    patchkits (Jiri Olsa)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2015-06-09 11:46:04 +02:00
parent a3d86542de d3a7c489c7
commit 028c63b567
22 changed files with 737 additions and 573 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
tools/lib/traceevent/.gitignore vendored
View File

@ -1 +1,2 @@
TRACEEVENT-CFLAGS
libtraceevent-dynamic-list

14
tools/lib/traceevent/Makefile
View File

@ -23,6 +23,7 @@ endef
# Allow setting CC and AR, or setting CROSS_COMPILE as a prefix.
$(call allow-override,CC,$(CROSS_COMPILE)gcc)
$(call allow-override,AR,$(CROSS_COMPILE)ar)
$(call allow-override,NM,$(CROSS_COMPILE)nm)
EXT = -std=gnu99
INSTALL = install
@ -157,8 +158,9 @@ PLUGINS_IN := $(PLUGINS:.so=-in.o)
TE_IN := $(OUTPUT)libtraceevent-in.o
LIB_FILE := $(addprefix $(OUTPUT),$(LIB_FILE))
DYNAMIC_LIST_FILE := $(OUTPUT)libtraceevent-dynamic-list
CMD_TARGETS = $(LIB_FILE) $(PLUGINS)
CMD_TARGETS = $(LIB_FILE) $(PLUGINS) $(DYNAMIC_LIST_FILE)
TARGETS = $(CMD_TARGETS)
@ -175,6 +177,9 @@ $(OUTPUT)libtraceevent.so: $(TE_IN)
$(OUTPUT)libtraceevent.a: $(TE_IN)
$(QUIET_LINK)$(RM) $@; $(AR) rcs $@ $^
$(OUTPUT)libtraceevent-dynamic-list: $(PLUGINS)
$(QUIET_GEN)$(call do_generate_dynamic_list_file, $(PLUGINS), $@)
plugins: $(PLUGINS)
__plugin_obj = $(notdir $@)
@ -244,6 +249,13 @@ define do_install_plugins
done
endef
define do_generate_dynamic_list_file
(echo '{'; \
$(NM) -u -D $1 | awk 'NF>1 {print "\t"$$2";"}' | sort -u; \
echo '};'; \
) > $2
endef
install_lib: all_cmd install_plugins
$(call QUIET_INSTALL, $(LIB_FILE)) \
$(call do_install,$(LIB_FILE),$(libdir_SQ))

14
tools/perf/Makefile.perf
View File

@ -173,6 +173,9 @@ endif
LIBTRACEEVENT = $(TE_PATH)libtraceevent.a
export LIBTRACEEVENT
LIBTRACEEVENT_DYNAMIC_LIST = $(TE_PATH)libtraceevent-dynamic-list
LDFLAGS += -Xlinker --dynamic-list=$(LIBTRACEEVENT_DYNAMIC_LIST)
LIBAPI = $(LIB_PATH)libapi.a
export LIBAPI
@ -278,7 +281,7 @@ build := -f $(srctree)/tools/build/Makefile.build dir=. obj
$(PERF_IN): $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)common-cmds.h FORCE
$(Q)$(MAKE) $(build)=perf
$(OUTPUT)perf: $(PERFLIBS) $(PERF_IN)
$(OUTPUT)perf: $(PERFLIBS) $(PERF_IN) $(LIBTRACEEVENT_DYNAMIC_LIST)
$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $(PERF_IN) $(LIBS) -o $@
$(GTK_IN): FORCE
@ -373,7 +376,13 @@ $(LIB_FILE): $(LIBPERF_IN)
LIBTRACEEVENT_FLAGS += plugin_dir=$(plugindir_SQ)
$(LIBTRACEEVENT): FORCE
$(Q)$(MAKE) -C $(TRACE_EVENT_DIR) $(LIBTRACEEVENT_FLAGS) O=$(OUTPUT) $(OUTPUT)libtraceevent.a plugins
$(Q)$(MAKE) -C $(TRACE_EVENT_DIR) $(LIBTRACEEVENT_FLAGS) O=$(OUTPUT) $(OUTPUT)libtraceevent.a
libtraceevent_plugins: FORCE
$(Q)$(MAKE) -C $(TRACE_EVENT_DIR) $(LIBTRACEEVENT_FLAGS) O=$(OUTPUT) plugins
$(LIBTRACEEVENT_DYNAMIC_LIST): libtraceevent_plugins
$(Q)$(MAKE) -C $(TRACE_EVENT_DIR) $(LIBTRACEEVENT_FLAGS) O=$(OUTPUT) $(OUTPUT)libtraceevent-dynamic-list
$(LIBTRACEEVENT)-clean:
$(call QUIET_CLEAN, libtraceevent)
@ -555,4 +564,5 @@ FORCE:
.PHONY: all install clean config-clean strip install-gtk
.PHONY: shell_compatibility_test please_set_SHELL_PATH_to_a_more_modern_shell
.PHONY: $(GIT-HEAD-PHONY) TAGS tags cscope FORCE single_dep
.PHONY: libtraceevent_plugins

6
tools/perf/builtin-record.c
View File

@ -345,12 +345,9 @@ static int process_buildids(struct record *rec)
struct perf_data_file *file = &rec->file;
struct perf_session *session = rec->session;
u64 size = lseek(perf_data_file__fd(file), 0, SEEK_CUR);
if (size == 0)
if (file->size == 0)
return 0;
file->size = size;
/*
* During this process, it'll load kernel map and replace the
* dso->long_name to a real pathname it found. In this case
@ -719,6 +716,7 @@ out_child:
if (!err && !file->is_pipe) {
rec->session->header.data_size += rec->bytes_written;
file->size = lseek(perf_data_file__fd(file), 0, SEEK_CUR);
if (!rec->no_buildid) {
process_buildids(rec);

506
tools/perf/builtin-stat.c
View File

@ -73,8 +73,8 @@ static void print_counter(struct perf_evsel *counter, char *prefix);
static void print_aggr(char *prefix);
/* Default events used for perf stat -T */
static const char * const transaction_attrs[] = {
"task-clock",
static const char *transaction_attrs = {
"task-clock,"
"{"
"instructions,"
"cycles,"
@ -86,8 +86,8 @@ static const char * const transaction_attrs[] = {
};
/* More limited version when the CPU does not have all events. */
static const char * const transaction_limited_attrs[] = {
"task-clock",
static const char * transaction_limited_attrs = {
"task-clock,"
"{"
"instructions,"
"cycles,"
@ -96,30 +96,12 @@ static const char * const transaction_limited_attrs[] = {
"}"
};
/* must match transaction_attrs and the beginning limited_attrs */
enum {
T_TASK_CLOCK,
T_INSTRUCTIONS,
T_CYCLES,
T_CYCLES_IN_TX,
T_TRANSACTION_START,
T_ELISION_START,
T_CYCLES_IN_TX_CP,
};
static struct perf_evlist *evsel_list;
static struct target target = {
.uid = UINT_MAX,
};
enum aggr_mode {
AGGR_NONE,
AGGR_GLOBAL,
AGGR_SOCKET,
AGGR_CORE,
};
static int run_count = 1;
static bool no_inherit = false;
static bool scale = true;
@ -147,10 +129,6 @@ static int (*aggr_get_id)(struct cpu_map *m, int cpu);
static volatile int done = 0;
struct perf_stat {
struct stats res_stats[3];
};
static inline void diff_timespec(struct timespec *r, struct timespec *a,
struct timespec *b)
{
@ -180,6 +158,8 @@ static void perf_evsel__reset_stat_priv(struct perf_evsel *evsel)
for (i = 0; i < 3; i++)
init_stats(&ps->res_stats[i]);
perf_stat_evsel_id_init(evsel);
}
static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
@ -247,51 +227,6 @@ out_free:
return -1;
}
enum {
CTX_BIT_USER = 1 << 0,
CTX_BIT_KERNEL = 1 << 1,
CTX_BIT_HV = 1 << 2,
CTX_BIT_HOST = 1 << 3,
CTX_BIT_IDLE = 1 << 4,
CTX_BIT_MAX = 1 << 5,
};
#define NUM_CTX CTX_BIT_MAX
static struct stats runtime_nsecs_stats[MAX_NR_CPUS];
static struct stats runtime_cycles_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_stalled_cycles_front_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_stalled_cycles_back_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_branches_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_cacherefs_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_l1_dcache_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_l1_icache_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_ll_cache_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_itlb_cache_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_dtlb_cache_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_cycles_in_tx_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats walltime_nsecs_stats;
static struct stats runtime_transaction_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_elision_stats[NUM_CTX][MAX_NR_CPUS];
static int evsel_context(struct perf_evsel *evsel)
{
int ctx = 0;
if (evsel->attr.exclude_kernel)
ctx |= CTX_BIT_KERNEL;
if (evsel->attr.exclude_user)
ctx |= CTX_BIT_USER;
if (evsel->attr.exclude_hv)
ctx |= CTX_BIT_HV;
if (evsel->attr.exclude_host)
ctx |= CTX_BIT_HOST;
if (evsel->attr.exclude_idle)
ctx |= CTX_BIT_IDLE;
return ctx;
}
static void perf_stat__reset_stats(struct perf_evlist *evlist)
{
struct perf_evsel *evsel;
@ -301,23 +236,7 @@ static void perf_stat__reset_stats(struct perf_evlist *evlist)
perf_evsel__reset_counts(evsel, perf_evsel__nr_cpus(evsel));
}
memset(runtime_nsecs_stats, 0, sizeof(runtime_nsecs_stats));
memset(runtime_cycles_stats, 0, sizeof(runtime_cycles_stats));
memset(runtime_stalled_cycles_front_stats, 0, sizeof(runtime_stalled_cycles_front_stats));
memset(runtime_stalled_cycles_back_stats, 0, sizeof(runtime_stalled_cycles_back_stats));
memset(runtime_branches_stats, 0, sizeof(runtime_branches_stats));
memset(runtime_cacherefs_stats, 0, sizeof(runtime_cacherefs_stats));
memset(runtime_l1_dcache_stats, 0, sizeof(runtime_l1_dcache_stats));
memset(runtime_l1_icache_stats, 0, sizeof(runtime_l1_icache_stats));
memset(runtime_ll_cache_stats, 0, sizeof(runtime_ll_cache_stats));
memset(runtime_itlb_cache_stats, 0, sizeof(runtime_itlb_cache_stats));
memset(runtime_dtlb_cache_stats, 0, sizeof(runtime_dtlb_cache_stats));
memset(runtime_cycles_in_tx_stats, 0,
sizeof(runtime_cycles_in_tx_stats));
memset(runtime_transaction_stats, 0,
sizeof(runtime_transaction_stats));
memset(runtime_elision_stats, 0, sizeof(runtime_elision_stats));
memset(&walltime_nsecs_stats, 0, sizeof(walltime_nsecs_stats));
perf_stat__reset_shadow_stats();
}
static int create_perf_stat_counter(struct perf_evsel *evsel)
@ -354,72 +273,6 @@ static inline int nsec_counter(struct perf_evsel *evsel)
return 0;
}
static struct perf_evsel *nth_evsel(int n)
{
static struct perf_evsel **array;
static int array_len;
struct perf_evsel *ev;
int j;
/* Assumes this only called when evsel_list does not change anymore. */
if (!array) {
evlist__for_each(evsel_list, ev)
array_len++;
array = malloc(array_len * sizeof(void *));
if (!array)
exit(ENOMEM);
j = 0;
evlist__for_each(evsel_list, ev)
array[j++] = ev;
}
if (n < array_len)
return array[n];
return NULL;
}
/*
* Update various tracking values we maintain to print
* more semantic information such as miss/hit ratios,
* instruction rates, etc:
*/
static void update_shadow_stats(struct perf_evsel *counter, u64 *count,
int cpu)
{
int ctx = evsel_context(counter);
if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
update_stats(&runtime_nsecs_stats[cpu], count[0]);
else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
update_stats(&runtime_cycles_stats[ctx][cpu], count[0]);
else if (transaction_run &&
perf_evsel__cmp(counter, nth_evsel(T_CYCLES_IN_TX)))
update_stats(&runtime_transaction_stats[ctx][cpu], count[0]);
else if (transaction_run &&
perf_evsel__cmp(counter, nth_evsel(T_TRANSACTION_START)))
update_stats(&runtime_transaction_stats[ctx][cpu], count[0]);
else if (transaction_run &&
perf_evsel__cmp(counter, nth_evsel(T_ELISION_START)))
update_stats(&runtime_elision_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
update_stats(&runtime_stalled_cycles_front_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
update_stats(&runtime_stalled_cycles_back_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
update_stats(&runtime_branches_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
update_stats(&runtime_cacherefs_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
update_stats(&runtime_l1_dcache_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
update_stats(&runtime_ll_cache_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
update_stats(&runtime_ll_cache_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
update_stats(&runtime_dtlb_cache_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
update_stats(&runtime_itlb_cache_stats[ctx][cpu], count[0]);
}
static void zero_per_pkg(struct perf_evsel *counter)
{
if (counter->per_pkg_mask)
@ -480,7 +333,7 @@ static int read_cb(struct perf_evsel *evsel, int cpu, int thread __maybe_unused,
perf_counts_values__scale(count, scale, NULL);
evsel->counts->cpu[cpu] = *count;
if (aggr_mode == AGGR_NONE)
update_shadow_stats(evsel, count->values, cpu);
perf_stat__update_shadow_stats(evsel, count->values, cpu);
break;
case AGGR_GLOBAL:
aggr->val += count->val;
@ -528,7 +381,7 @@ static int read_counter_aggr(struct perf_evsel *counter)
/*
* Save the full runtime - to allow normalization during printout:
*/
update_shadow_stats(counter, count, 0);
perf_stat__update_shadow_stats(counter, count, 0);
return 0;
}
@ -906,200 +759,11 @@ static void nsec_printout(int id, int nr, struct perf_evsel *evsel, double avg)
fprintf(output, " ");
}
/* used for get_ratio_color() */
enum grc_type {
GRC_STALLED_CYCLES_FE,
GRC_STALLED_CYCLES_BE,
GRC_CACHE_MISSES,
GRC_MAX_NR
};
static const char *get_ratio_color(enum grc_type type, double ratio)
{
static const double grc_table[GRC_MAX_NR][3] = {
[GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 },
[GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 },
[GRC_CACHE_MISSES] = { 20.0, 10.0, 5.0 },
};
const char *color = PERF_COLOR_NORMAL;
if (ratio > grc_table[type][0])
color = PERF_COLOR_RED;
else if (ratio > grc_table[type][1])
color = PERF_COLOR_MAGENTA;
else if (ratio > grc_table[type][2])
color = PERF_COLOR_YELLOW;
return color;
}
static void print_stalled_cycles_frontend(int cpu,
struct perf_evsel *evsel
__maybe_unused, double avg)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio);
fprintf(output, " # ");
color_fprintf(output, color, "%6.2f%%", ratio);
fprintf(output, " frontend cycles idle ");
}
static void print_stalled_cycles_backend(int cpu,
struct perf_evsel *evsel
__maybe_unused, double avg)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);
fprintf(output, " # ");
color_fprintf(output, color, "%6.2f%%", ratio);
fprintf(output, " backend cycles idle ");
}
static void print_branch_misses(int cpu,
struct perf_evsel *evsel __maybe_unused,
double avg)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_branches_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
fprintf(output, " # ");
color_fprintf(output, color, "%6.2f%%", ratio);
fprintf(output, " of all branches ");
}
static void print_l1_dcache_misses(int cpu,
struct perf_evsel *evsel __maybe_unused,
double avg)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_l1_dcache_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
fprintf(output, " # ");
color_fprintf(output, color, "%6.2f%%", ratio);
fprintf(output, " of all L1-dcache hits ");
}
static void print_l1_icache_misses(int cpu,
struct perf_evsel *evsel __maybe_unused,
double avg)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_l1_icache_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
fprintf(output, " # ");
color_fprintf(output, color, "%6.2f%%", ratio);
fprintf(output, " of all L1-icache hits ");
}
static void print_dtlb_cache_misses(int cpu,
struct perf_evsel *evsel __maybe_unused,
double avg)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_dtlb_cache_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
fprintf(output, " # ");
color_fprintf(output, color, "%6.2f%%", ratio);
fprintf(output, " of all dTLB cache hits ");
}
static void print_itlb_cache_misses(int cpu,
struct perf_evsel *evsel __maybe_unused,
double avg)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_itlb_cache_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
fprintf(output, " # ");
color_fprintf(output, color, "%6.2f%%", ratio);
fprintf(output, " of all iTLB cache hits ");
}
static void print_ll_cache_misses(int cpu,
struct perf_evsel *evsel __maybe_unused,
double avg)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_ll_cache_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
fprintf(output, " # ");
color_fprintf(output, color, "%6.2f%%", ratio);
fprintf(output, " of all LL-cache hits ");
}
static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg)
{
double total, ratio = 0.0, total2;
double sc = evsel->scale;
const char *fmt;
int cpu = cpu_map__id_to_cpu(id);
int ctx = evsel_context(evsel);
if (csv_output) {
fmt = sc != 1.0 ? "%.2f%s" : "%.0f%s";
@ -1130,138 +794,7 @@ static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg)
if (csv_output || interval)
return;
if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
if (total) {
ratio = avg / total;
fprintf(output, " # %5.2f insns per cycle ", ratio);
} else {
fprintf(output, " ");
}
total = avg_stats(&runtime_stalled_cycles_front_stats[ctx][cpu]);
total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[ctx][cpu]));
if (total && avg) {
ratio = total / avg;
fprintf(output, "\n");
if (aggr_mode == AGGR_NONE)
fprintf(output, " ");
fprintf(output, " # %5.2f stalled cycles per insn", ratio);
}
} else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
runtime_branches_stats[ctx][cpu].n != 0) {
print_branch_misses(cpu, evsel, avg);
} else if (
evsel->attr.type == PERF_TYPE_HW_CACHE &&
evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D |
((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
runtime_l1_dcache_stats[ctx][cpu].n != 0) {
print_l1_dcache_misses(cpu, evsel, avg);
} else if (
evsel->attr.type == PERF_TYPE_HW_CACHE &&
evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I |
((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
runtime_l1_icache_stats[ctx][cpu].n != 0) {
print_l1_icache_misses(cpu, evsel, avg);
} else if (
evsel->attr.type == PERF_TYPE_HW_CACHE &&
evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
runtime_dtlb_cache_stats[ctx][cpu].n != 0) {
print_dtlb_cache_misses(cpu, evsel, avg);
} else if (
evsel->attr.type == PERF_TYPE_HW_CACHE &&
evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
runtime_itlb_cache_stats[ctx][cpu].n != 0) {
print_itlb_cache_misses(cpu, evsel, avg);
} else if (
evsel->attr.type == PERF_TYPE_HW_CACHE &&
evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL |
((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
runtime_ll_cache_stats[ctx][cpu].n != 0) {
print_ll_cache_misses(cpu, evsel, avg);
} else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) &&
runtime_cacherefs_stats[ctx][cpu].n != 0) {
total = avg_stats(&runtime_cacherefs_stats[ctx][cpu]);
if (total)
ratio = avg * 100 / total;
fprintf(output, " # %8.3f %% of all cache refs ", ratio);
} else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
print_stalled_cycles_frontend(cpu, evsel, avg);
} else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
print_stalled_cycles_backend(cpu, evsel, avg);
} else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
total = avg_stats(&runtime_nsecs_stats[cpu]);
if (total) {
ratio = avg / total;
fprintf(output, " # %8.3f GHz ", ratio);
} else {
fprintf(output, " ");
}
} else if (transaction_run &&
perf_evsel__cmp(evsel, nth_evsel(T_CYCLES_IN_TX))) {
total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
if (total)
fprintf(output,
" # %5.2f%% transactional cycles ",
100.0 * (avg / total));
} else if (transaction_run &&
perf_evsel__cmp(evsel, nth_evsel(T_CYCLES_IN_TX_CP))) {
total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
total2 = avg_stats(&runtime_cycles_in_tx_stats[ctx][cpu]);
if (total2 < avg)
total2 = avg;
if (total)
fprintf(output,
" # %5.2f%% aborted cycles ",
100.0 * ((total2-avg) / total));
} else if (transaction_run &&
perf_evsel__cmp(evsel, nth_evsel(T_TRANSACTION_START)) &&
avg > 0 &&
runtime_cycles_in_tx_stats[ctx][cpu].n != 0) {
total = avg_stats(&runtime_cycles_in_tx_stats[ctx][cpu]);
if (total)
ratio = total / avg;
fprintf(output, " # %8.0f cycles / transaction ", ratio);
} else if (transaction_run &&
perf_evsel__cmp(evsel, nth_evsel(T_ELISION_START)) &&
avg > 0 &&
runtime_cycles_in_tx_stats[ctx][cpu].n != 0) {
total = avg_stats(&runtime_cycles_in_tx_stats[ctx][cpu]);
if (total)
ratio = total / avg;
fprintf(output, " # %8.0f cycles / elision ", ratio);
} else if (runtime_nsecs_stats[cpu].n != 0) {
char unit = 'M';
total = avg_stats(&runtime_nsecs_stats[cpu]);
if (total)
ratio = 1000.0 * avg / total;
if (ratio < 0.001) {
ratio *= 1000;
unit = 'K';
}
fprintf(output, " # %8.3f %c/sec ", ratio, unit);
} else {
fprintf(output, " ");
}
perf_stat__print_shadow_stats(output, evsel, avg, cpu, aggr_mode);
}
static void print_aggr(char *prefix)
@ -1576,17 +1109,6 @@ static int perf_stat_init_aggr_mode(void)
return 0;
}
static int setup_events(const char * const *attrs, unsigned len)
{
unsigned i;
for (i = 0; i < len; i++) {
if (parse_events(evsel_list, attrs[i], NULL))
return -1;
}
return 0;
}
/*
* Add default attributes, if there were no attributes specified or
* if -d/--detailed, -d -d or -d -d -d is used:
@ -1708,12 +1230,10 @@ static int add_default_attributes(void)
int err;
if (pmu_have_event("cpu", "cycles-ct") &&
pmu_have_event("cpu", "el-start"))
err = setup_events(transaction_attrs,
ARRAY_SIZE(transaction_attrs));
err = parse_events(evsel_list, transaction_attrs, NULL);
else
err = setup_events(transaction_limited_attrs,
ARRAY_SIZE(transaction_limited_attrs));
if (err < 0) {
err = parse_events(evsel_list, transaction_limited_attrs, NULL);
if (err) {
fprintf(stderr, "Cannot set up transaction events\n");
return -1;
}

4
tools/perf/tests/dso-data.c
View File

@ -166,7 +166,7 @@ int test__dso_data(void)
free(buf);
}
dso__delete(dso);
dso__put(dso);
unlink(file);
return 0;
}
@ -226,7 +226,7 @@ static void dsos__delete(int cnt)
struct dso *dso = dsos[i];
unlink(dso->name);
dso__delete(dso);
dso__put(dso);
}
free(dsos);

6
tools/perf/tests/hists_common.c
View File

@ -134,11 +134,15 @@ struct machine *setup_fake_machine(struct machines *machines)
sym = symbol__new(fsym->start, fsym->length,
STB_GLOBAL, fsym->name);
if (sym == NULL)
if (sym == NULL) {
dso__put(dso);
goto out;
}
symbols__insert(&dso->symbols[MAP__FUNCTION], sym);
}
dso__put(dso);
}
return machine;

1
tools/perf/util/Build
View File

@ -68,6 +68,7 @@ libperf-y += rblist.o
libperf-y += intlist.o
libperf-y += vdso.o
libperf-y += stat.o
libperf-y += stat-shadow.o
libperf-y += record.o
libperf-y += srcline.o
libperf-y += data.o

87
tools/perf/util/dso.c
View File

@ -889,8 +889,8 @@ struct dso *machine__findnew_kernel(struct machine *machine, const char *name,
* Either one of the dso or name parameter must be non-NULL or the
* function will not work.
*/
static struct dso *dso__findlink_by_longname(struct rb_root *root,
struct dso *dso, const char *name)
static struct dso *__dso__findlink_by_longname(struct rb_root *root,
struct dso *dso, const char *name)
{
struct rb_node **p = &root->rb_node;
struct rb_node *parent = NULL;
@ -937,10 +937,10 @@ static struct dso *dso__findlink_by_longname(struct rb_root *root,
return NULL;
}
static inline struct dso *
dso__find_by_longname(const struct rb_root *root, const char *name)
static inline struct dso *__dso__find_by_longname(struct rb_root *root,
const char *name)
{
return dso__findlink_by_longname((struct rb_root *)root, NULL, name);
return __dso__findlink_by_longname(root, NULL, name);
}
void dso__set_long_name(struct dso *dso, const char *name, bool name_allocated)
@ -1049,6 +1049,7 @@ struct dso *dso__new(const char *name)
INIT_LIST_HEAD(&dso->node);
INIT_LIST_HEAD(&dso->data.open_entry);
pthread_mutex_init(&dso->lock, NULL);
atomic_set(&dso->refcnt, 1);
}
return dso;
@ -1083,6 +1084,19 @@ void dso__delete(struct dso *dso)
free(dso);
}
struct dso *dso__get(struct dso *dso)
{
if (dso)
atomic_inc(&dso->refcnt);
return dso;
}
void dso__put(struct dso *dso)
{
if (dso && atomic_dec_and_test(&dso->refcnt))
dso__delete(dso);
}
void dso__set_build_id(struct dso *dso, void *build_id)
{
memcpy(dso->build_id, build_id, sizeof(dso->build_id));
@ -1149,14 +1163,41 @@ bool __dsos__read_build_ids(struct list_head *head, bool with_hits)
return have_build_id;
}
void dsos__add(struct dsos *dsos, struct dso *dso)
void __dsos__add(struct dsos *dsos, struct dso *dso)
{
list_add_tail(&dso->node, &dsos->head);
dso__findlink_by_longname(&dsos->root, dso, NULL);
__dso__findlink_by_longname(&dsos->root, dso, NULL);
/*
* It is now in the linked list, grab a reference, then garbage collect
* this when needing memory, by looking at LRU dso instances in the
* list with atomic_read(&dso->refcnt) == 1, i.e. no references
* anywhere besides the one for the list, do, under a lock for the
* list: remove it from the list, then a dso__put(), that probably will
* be the last and will then call dso__delete(), end of life.
*
* That, or at the end of the 'struct machine' lifetime, when all
* 'struct dso' instances will be removed from the list, in
* dsos__exit(), if they have no other reference from some other data
* structure.
*
* E.g.: after processing a 'perf.data' file and storing references
* to objects instantiated while processing events, we will have
* references to the 'thread', 'map', 'dso' structs all from 'struct
* hist_entry' instances, but we may not need anything not referenced,
* so we might as well call machines__exit()/machines__delete() and
* garbage collect it.
*/
dso__get(dso);
}
struct dso *dsos__find(const struct dsos *dsos, const char *name,
bool cmp_short)
void dsos__add(struct dsos *dsos, struct dso *dso)
{
pthread_rwlock_wrlock(&dsos->lock);
__dsos__add(dsos, dso);
pthread_rwlock_unlock(&dsos->lock);
}
struct dso *__dsos__find(struct dsos *dsos, const char *name, bool cmp_short)
{
struct dso *pos;
@ -1166,15 +1207,24 @@ struct dso *dsos__find(const struct dsos *dsos, const char *name,
return pos;
return NULL;
}
return dso__find_by_longname(&dsos->root, name);
return __dso__find_by_longname(&dsos->root, name);
}
struct dso *dsos__addnew(struct dsos *dsos, const char *name)
struct dso *dsos__find(struct dsos *dsos, const char *name, bool cmp_short)
{
struct dso *dso;
pthread_rwlock_rdlock(&dsos->lock);
dso = __dsos__find(dsos, name, cmp_short);
pthread_rwlock_unlock(&dsos->lock);
return dso;
}
struct dso *__dsos__addnew(struct dsos *dsos, const char *name)
{
struct dso *dso = dso__new(name);
if (dso != NULL) {
dsos__add(dsos, dso);
__dsos__add(dsos, dso);
dso__set_basename(dso);
}
return dso;
@ -1182,9 +1232,18 @@ struct dso *dsos__addnew(struct dsos *dsos, const char *name)
struct dso *__dsos__findnew(struct dsos *dsos, const char *name)
{
struct dso *dso = dsos__find(dsos, name, false);
struct dso *dso = __dsos__find(dsos, name, false);
return dso ? dso : dsos__addnew(dsos, name);
return dso ? dso : __dsos__addnew(dsos, name);
}
struct dso *dsos__findnew(struct dsos *dsos, const char *name)
{
struct dso *dso;
pthread_rwlock_wrlock(&dsos->lock);
dso = dso__get(__dsos__findnew(dsos, name));
pthread_rwlock_unlock(&dsos->lock);
return dso;
}
size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp,

24
tools/perf/util/dso.h
View File

@ -1,9 +1,11 @@
#ifndef __PERF_DSO
#define __PERF_DSO
#include <linux/atomic.h>
#include <linux/types.h>
#include <linux/rbtree.h>
#include <stdbool.h>
#include <pthread.h>
#include <linux/types.h>
#include <linux/bitops.h>
#include "map.h"
@ -124,6 +126,7 @@ struct dso_cache {
struct dsos {
struct list_head head;
struct rb_root root; /* rbtree root sorted by long name */
pthread_rwlock_t lock;
};
struct auxtrace_cache;
@ -177,7 +180,7 @@ struct dso {
void *priv;
u64 db_id;
};
atomic_t refcnt;
char name[0];
};
@ -204,6 +207,17 @@ void dso__set_long_name(struct dso *dso, const char *name, bool name_allocated);
int dso__name_len(const struct dso *dso);
struct dso *dso__get(struct dso *dso);
void dso__put(struct dso *dso);
static inline void __dso__zput(struct dso **dso)
{
dso__put(*dso);
*dso = NULL;
}
#define dso__zput(dso) __dso__zput(&dso)
bool dso__loaded(const struct dso *dso, enum map_type type);
bool dso__sorted_by_name(const struct dso *dso, enum map_type type);
@ -297,11 +311,13 @@ struct map *dso__new_map(const char *name);
struct dso *machine__findnew_kernel(struct machine *machine, const char *name,
const char *short_name, int dso_type);
void __dsos__add(struct dsos *dsos, struct dso *dso);
void dsos__add(struct dsos *dsos, struct dso *dso);
struct dso *dsos__addnew(struct dsos *dsos, const char *name);
struct dso *dsos__find(const struct dsos *dsos, const char *name,
bool cmp_short);
struct dso *__dsos__addnew(struct dsos *dsos, const char *name);
struct dso *__dsos__find(struct dsos *dsos, const char *name, bool cmp_short);
struct dso *dsos__find(struct dsos *dsos, const char *name, bool cmp_short);
struct dso *__dsos__findnew(struct dsos *dsos, const char *name);
struct dso *dsos__findnew(struct dsos *dsos, const char *name);
bool __dsos__read_build_ids(struct list_head *head, bool with_hits);
size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp,

1
tools/perf/util/header.c
View File

@ -1277,6 +1277,7 @@ static int __event_process_build_id(struct build_id_event *bev,
sbuild_id);
pr_debug("build id event received for %s: %s\n",
dso->long_name, sbuild_id);
dso__put(dso);
}
err = 0;

58
tools/perf/util/machine.c
View File

@ -20,6 +20,7 @@ static void dsos__init(struct dsos *dsos)
{
INIT_LIST_HEAD(&dsos->head);
dsos->root = RB_ROOT;
pthread_rwlock_init(&dsos->lock, NULL);
}
int machine__init(struct machine *machine, const char *root_dir, pid_t pid)
@ -81,15 +82,25 @@ out_delete:
return NULL;
}
static void dsos__delete(struct dsos *dsos)
static void dsos__purge(struct dsos *dsos)
{
struct dso *pos, *n;
pthread_rwlock_wrlock(&dsos->lock);
list_for_each_entry_safe(pos, n, &dsos->head, node) {
RB_CLEAR_NODE(&pos->rb_node);
list_del(&pos->node);
dso__delete(pos);
list_del_init(&pos->node);
dso__put(pos);
}
pthread_rwlock_unlock(&dsos->lock);
}
static void dsos__exit(struct dsos *dsos)
{
dsos__purge(dsos);
pthread_rwlock_destroy(&dsos->lock);
}
void machine__delete_threads(struct machine *machine)
@ -110,7 +121,7 @@ void machine__delete_threads(struct machine *machine)
void machine__exit(struct machine *machine)
{
map_groups__exit(&machine->kmaps);
dsos__delete(&machine->dsos);
dsos__exit(&machine->dsos);
machine__exit_vdso(machine);
zfree(&machine->root_dir);
zfree(&machine->current_tid);
@ -490,17 +501,19 @@ int machine__process_lost_samples_event(struct machine *machine __maybe_unused,
return 0;
}
static struct dso*
machine__module_dso(struct machine *machine, struct kmod_path *m,
const char *filename)
static struct dso *machine__findnew_module_dso(struct machine *machine,
struct kmod_path *m,
const char *filename)
{
struct dso *dso;
dso = dsos__find(&machine->dsos, m->name, true);
pthread_rwlock_wrlock(&machine->dsos.lock);
dso = __dsos__find(&machine->dsos, m->name, true);
if (!dso) {
dso = dsos__addnew(&machine->dsos, m->name);
dso = __dsos__addnew(&machine->dsos, m->name);
if (dso == NULL)
return NULL;
goto out_unlock;
if (machine__is_host(machine))
dso->symtab_type = DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE;
@ -515,6 +528,9 @@ machine__module_dso(struct machine *machine, struct kmod_path *m,
dso__set_long_name(dso, strdup(filename), true);
}
dso__get(dso);
out_unlock:
pthread_rwlock_unlock(&machine->dsos.lock);
return dso;
}
@ -534,8 +550,8 @@ int machine__process_itrace_start_event(struct machine *machine __maybe_unused,
return 0;
}
struct map *machine__new_module(struct machine *machine, u64 start,
const char *filename)
struct map *machine__findnew_module_map(struct machine *machine, u64 start,
const char *filename)
{
struct map *map = NULL;
struct dso *dso;
@ -549,7 +565,7 @@ struct map *machine__new_module(struct machine *machine, u64 start,
if (map)
goto out;
dso = machine__module_dso(machine, &m, filename);
dso = machine__findnew_module_dso(machine, &m, filename);
if (dso == NULL)
goto out;
@ -1017,7 +1033,7 @@ static int machine__create_module(void *arg, const char *name, u64 start)
struct machine *machine = arg;
struct map *map;
map = machine__new_module(machine, start, name);
map = machine__findnew_module_map(machine, start, name);
if (map == NULL)
return -1;
@ -1140,8 +1156,8 @@ static int machine__process_kernel_mmap_event(struct machine *machine,
strlen(kmmap_prefix) - 1) == 0;
if (event->mmap.filename[0] == '/' ||
(!is_kernel_mmap && event->mmap.filename[0] == '[')) {
map = machine__new_module(machine, event->mmap.start,
event->mmap.filename);
map = machine__findnew_module_map(machine, event->mmap.start,
event->mmap.filename);
if (map == NULL)
goto out_problem;
@ -1156,6 +1172,8 @@ static int machine__process_kernel_mmap_event(struct machine *machine,
struct dso *kernel = NULL;
struct dso *dso;
pthread_rwlock_rdlock(&machine->dsos.lock);
list_for_each_entry(dso, &machine->dsos.head, node) {
/*
@ -1184,14 +1202,18 @@ static int machine__process_kernel_mmap_event(struct machine *machine,
break;
}
pthread_rwlock_unlock(&machine->dsos.lock);
if (kernel == NULL)
kernel = machine__findnew_dso(machine, kmmap_prefix);
if (kernel == NULL)
goto out_problem;
kernel->kernel = kernel_type;
if (__machine__create_kernel_maps(machine, kernel) < 0)
if (__machine__create_kernel_maps(machine, kernel) < 0) {
dso__put(kernel);
goto out_problem;
}
if (strstr(kernel->long_name, "vmlinux"))
dso__set_short_name(kernel, "[kernel.vmlinux]", false);
@ -1948,5 +1970,5 @@ int machine__get_kernel_start(struct machine *machine)
struct dso *machine__findnew_dso(struct machine *machine, const char *filename)
{
return __dsos__findnew(&machine->dsos, filename);
return dsos__findnew(&machine->dsos, filename);
}

4
tools/perf/util/machine.h
View File

@ -189,8 +189,8 @@ struct symbol *machine__find_kernel_function_by_name(struct machine *machine,
filter);
}
struct map *machine__new_module(struct machine *machine, u64 start,
const char *filename);
struct map *machine__findnew_module_map(struct machine *machine, u64 start,
const char *filename);
int machine__load_kallsyms(struct machine *machine, const char *filename,
enum map_type type, symbol_filter_t filter);

11
tools/perf/util/map.c
View File

@ -132,7 +132,7 @@ void map__init(struct map *map, enum map_type type,
map->end = end;
map->pgoff = pgoff;
map->reloc = 0;
map->dso = dso;
map->dso = dso__get(dso);
map->map_ip = map__map_ip;
map->unmap_ip = map__unmap_ip;
RB_CLEAR_NODE(&map->rb_node);
@ -198,6 +198,7 @@ struct map *map__new(struct machine *machine, u64 start, u64 len,
if (type != MAP__FUNCTION)
dso__set_loaded(dso, map->type);
}
dso__put(dso);
}
return map;
out_delete:
@ -224,9 +225,15 @@ struct map *map__new2(u64 start, struct dso *dso, enum map_type type)
return map;
}
void map__delete(struct map *map)
static void map__exit(struct map *map)
{
BUG_ON(!RB_EMPTY_NODE(&map->rb_node));
dso__zput(map->dso);
}
void map__delete(struct map *map)
{
map__exit(map);
free(map);
}

2
tools/perf/util/probe-event.c
View File

@ -168,7 +168,7 @@ static struct map *kernel_get_module_map(const char *module)
/* A file path -- this is an offline module */
if (module && strchr(module, '/'))
return machine__new_module(host_machine, 0, module);
return machine__findnew_module_map(host_machine, 0, module);
if (!module)
module = "kernel";

2
tools/perf/util/probe-finder.c
View File

@ -130,7 +130,7 @@ struct debuginfo *debuginfo__new(const char *path)
continue;
dinfo = __debuginfo__new(buf);
}
dso__delete(dso);
dso__put(dso);
out:
/* if failed to open all distro debuginfo, open given binary */

434
tools/perf/util/stat-shadow.c Normal file
View File

@ -0,0 +1,434 @@
#include <stdio.h>
#include "evsel.h"
#include "stat.h"
#include "color.h"
enum {
CTX_BIT_USER = 1 << 0,
CTX_BIT_KERNEL = 1 << 1,
CTX_BIT_HV = 1 << 2,
CTX_BIT_HOST = 1 << 3,
CTX_BIT_IDLE = 1 << 4,
CTX_BIT_MAX = 1 << 5,
};
#define NUM_CTX CTX_BIT_MAX
static struct stats runtime_nsecs_stats[MAX_NR_CPUS];
static struct stats runtime_cycles_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_stalled_cycles_front_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_stalled_cycles_back_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_branches_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_cacherefs_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_l1_dcache_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_l1_icache_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_ll_cache_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_itlb_cache_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_dtlb_cache_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_cycles_in_tx_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_transaction_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_elision_stats[NUM_CTX][MAX_NR_CPUS];
struct stats walltime_nsecs_stats;
static int evsel_context(struct perf_evsel *evsel)
{
int ctx = 0;
if (evsel->attr.exclude_kernel)
ctx |= CTX_BIT_KERNEL;
if (evsel->attr.exclude_user)
ctx |= CTX_BIT_USER;
if (evsel->attr.exclude_hv)
ctx |= CTX_BIT_HV;
if (evsel->attr.exclude_host)
ctx |= CTX_BIT_HOST;
if (evsel->attr.exclude_idle)
ctx |= CTX_BIT_IDLE;
return ctx;
}
void perf_stat__reset_shadow_stats(void)
{
memset(runtime_nsecs_stats, 0, sizeof(runtime_nsecs_stats));
memset(runtime_cycles_stats, 0, sizeof(runtime_cycles_stats));
memset(runtime_stalled_cycles_front_stats, 0, sizeof(runtime_stalled_cycles_front_stats));
memset(runtime_stalled_cycles_back_stats, 0, sizeof(runtime_stalled_cycles_back_stats));
memset(runtime_branches_stats, 0, sizeof(runtime_branches_stats));
memset(runtime_cacherefs_stats, 0, sizeof(runtime_cacherefs_stats));
memset(runtime_l1_dcache_stats, 0, sizeof(runtime_l1_dcache_stats));
memset(runtime_l1_icache_stats, 0, sizeof(runtime_l1_icache_stats));
memset(runtime_ll_cache_stats, 0, sizeof(runtime_ll_cache_stats));
memset(runtime_itlb_cache_stats, 0, sizeof(runtime_itlb_cache_stats));
memset(runtime_dtlb_cache_stats, 0, sizeof(runtime_dtlb_cache_stats));
memset(runtime_cycles_in_tx_stats, 0,
sizeof(runtime_cycles_in_tx_stats));
memset(runtime_transaction_stats, 0,
sizeof(runtime_transaction_stats));
memset(runtime_elision_stats, 0, sizeof(runtime_elision_stats));
memset(&walltime_nsecs_stats, 0, sizeof(walltime_nsecs_stats));
}
/*
* Update various tracking values we maintain to print
* more semantic information such as miss/hit ratios,
* instruction rates, etc:
*/
void perf_stat__update_shadow_stats(struct perf_evsel *counter, u64 *count,
int cpu)
{
int ctx = evsel_context(counter);
if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
update_stats(&runtime_nsecs_stats[cpu], count[0]);
else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
update_stats(&runtime_cycles_stats[ctx][cpu], count[0]);
else if (perf_stat_evsel__is(counter, CYCLES_IN_TX))
update_stats(&runtime_transaction_stats[ctx][cpu], count[0]);
else if (perf_stat_evsel__is(counter, TRANSACTION_START))
update_stats(&runtime_transaction_stats[ctx][cpu], count[0]);
else if (perf_stat_evsel__is(counter, ELISION_START))
update_stats(&runtime_elision_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
update_stats(&runtime_stalled_cycles_front_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
update_stats(&runtime_stalled_cycles_back_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
update_stats(&runtime_branches_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
update_stats(&runtime_cacherefs_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
update_stats(&runtime_l1_dcache_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
update_stats(&runtime_ll_cache_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
update_stats(&runtime_ll_cache_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
update_stats(&runtime_dtlb_cache_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
update_stats(&runtime_itlb_cache_stats[ctx][cpu], count[0]);
}
/* used for get_ratio_color() */
enum grc_type {
GRC_STALLED_CYCLES_FE,
GRC_STALLED_CYCLES_BE,
GRC_CACHE_MISSES,
GRC_MAX_NR
};
static const char *get_ratio_color(enum grc_type type, double ratio)
{
static const double grc_table[GRC_MAX_NR][3] = {
[GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 },
[GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 },
[GRC_CACHE_MISSES] = { 20.0, 10.0, 5.0 },
};
const char *color = PERF_COLOR_NORMAL;
if (ratio > grc_table[type][0])
color = PERF_COLOR_RED;
else if (ratio > grc_table[type][1])
color = PERF_COLOR_MAGENTA;
else if (ratio > grc_table[type][2])
color = PERF_COLOR_YELLOW;
return color;
}
static void print_stalled_cycles_frontend(FILE *out, int cpu,
struct perf_evsel *evsel
__maybe_unused, double avg)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio);
fprintf(out, " # ");
color_fprintf(out, color, "%6.2f%%", ratio);
fprintf(out, " frontend cycles idle ");
}
static void print_stalled_cycles_backend(FILE *out, int cpu,
struct perf_evsel *evsel
__maybe_unused, double avg)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);
fprintf(out, " # ");
color_fprintf(out, color, "%6.2f%%", ratio);
fprintf(out, " backend cycles idle ");
}
static void print_branch_misses(FILE *out, int cpu,
struct perf_evsel *evsel __maybe_unused,
double avg)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_branches_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
fprintf(out, " # ");
color_fprintf(out, color, "%6.2f%%", ratio);
fprintf(out, " of all branches ");
}
static void print_l1_dcache_misses(FILE *out, int cpu,
struct perf_evsel *evsel __maybe_unused,
double avg)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_l1_dcache_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
fprintf(out, " # ");
color_fprintf(out, color, "%6.2f%%", ratio);
fprintf(out, " of all L1-dcache hits ");
}
static void print_l1_icache_misses(FILE *out, int cpu,
struct perf_evsel *evsel __maybe_unused,
double avg)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_l1_icache_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
fprintf(out, " # ");
color_fprintf(out, color, "%6.2f%%", ratio);
fprintf(out, " of all L1-icache hits ");
}
static void print_dtlb_cache_misses(FILE *out, int cpu,
struct perf_evsel *evsel __maybe_unused,
double avg)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_dtlb_cache_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
fprintf(out, " # ");
color_fprintf(out, color, "%6.2f%%", ratio);
fprintf(out, " of all dTLB cache hits ");
}
static void print_itlb_cache_misses(FILE *out, int cpu,
struct perf_evsel *evsel __maybe_unused,
double avg)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_itlb_cache_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
fprintf(out, " # ");
color_fprintf(out, color, "%6.2f%%", ratio);
fprintf(out, " of all iTLB cache hits ");
}
static void print_ll_cache_misses(FILE *out, int cpu,
struct perf_evsel *evsel __maybe_unused,
double avg)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_ll_cache_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
fprintf(out, " # ");
color_fprintf(out, color, "%6.2f%%", ratio);
fprintf(out, " of all LL-cache hits ");
}
void perf_stat__print_shadow_stats(FILE *out, struct perf_evsel *evsel,
double avg, int cpu, enum aggr_mode aggr)
{
double total, ratio = 0.0, total2;
int ctx = evsel_context(evsel);
if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
if (total) {
ratio = avg / total;
fprintf(out, " # %5.2f insns per cycle ", ratio);
} else {
fprintf(out, " ");
}
total = avg_stats(&runtime_stalled_cycles_front_stats[ctx][cpu]);
total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[ctx][cpu]));
if (total && avg) {
ratio = total / avg;
fprintf(out, "\n");
if (aggr == AGGR_NONE)
fprintf(out, " ");
fprintf(out, " # %5.2f stalled cycles per insn", ratio);
}
} else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
runtime_branches_stats[ctx][cpu].n != 0) {
print_branch_misses(out, cpu, evsel, avg);
} else if (
evsel->attr.type == PERF_TYPE_HW_CACHE &&
evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D |
((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
runtime_l1_dcache_stats[ctx][cpu].n != 0) {
print_l1_dcache_misses(out, cpu, evsel, avg);
} else if (
evsel->attr.type == PERF_TYPE_HW_CACHE &&
evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I |
((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
runtime_l1_icache_stats[ctx][cpu].n != 0) {
print_l1_icache_misses(out, cpu, evsel, avg);
} else if (
evsel->attr.type == PERF_TYPE_HW_CACHE &&
evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
runtime_dtlb_cache_stats[ctx][cpu].n != 0) {
print_dtlb_cache_misses(out, cpu, evsel, avg);
} else if (
evsel->attr.type == PERF_TYPE_HW_CACHE &&
evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
runtime_itlb_cache_stats[ctx][cpu].n != 0) {
print_itlb_cache_misses(out, cpu, evsel, avg);
} else if (
evsel->attr.type == PERF_TYPE_HW_CACHE &&
evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL |
((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
runtime_ll_cache_stats[ctx][cpu].n != 0) {
print_ll_cache_misses(out, cpu, evsel, avg);
} else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) &&
runtime_cacherefs_stats[ctx][cpu].n != 0) {
total = avg_stats(&runtime_cacherefs_stats[ctx][cpu]);
if (total)
ratio = avg * 100 / total;
fprintf(out, " # %8.3f %% of all cache refs ", ratio);
} else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
print_stalled_cycles_frontend(out, cpu, evsel, avg);
} else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
print_stalled_cycles_backend(out, cpu, evsel, avg);
} else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
total = avg_stats(&runtime_nsecs_stats[cpu]);
if (total) {
ratio = avg / total;
fprintf(out, " # %8.3f GHz ", ratio);
} else {
fprintf(out, " ");
}
} else if (perf_stat_evsel__is(evsel, CYCLES_IN_TX)) {
total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
if (total)
fprintf(out,
" # %5.2f%% transactional cycles ",
100.0 * (avg / total));
} else if (perf_stat_evsel__is(evsel, CYCLES_IN_TX_CP)) {
total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
total2 = avg_stats(&runtime_cycles_in_tx_stats[ctx][cpu]);
if (total2 < avg)
total2 = avg;
if (total)
fprintf(out,
" # %5.2f%% aborted cycles ",
100.0 * ((total2-avg) / total));
} else if (perf_stat_evsel__is(evsel, TRANSACTION_START) &&
avg > 0 &&
runtime_cycles_in_tx_stats[ctx][cpu].n != 0) {
total = avg_stats(&runtime_cycles_in_tx_stats[ctx][cpu]);
if (total)
ratio = total / avg;
fprintf(out, " # %8.0f cycles / transaction ", ratio);
} else if (perf_stat_evsel__is(evsel, ELISION_START) &&
avg > 0 &&
runtime_cycles_in_tx_stats[ctx][cpu].n != 0) {
total = avg_stats(&runtime_cycles_in_tx_stats[ctx][cpu]);
if (total)
ratio = total / avg;
fprintf(out, " # %8.0f cycles / elision ", ratio);
} else if (runtime_nsecs_stats[cpu].n != 0) {
char unit = 'M';
total = avg_stats(&runtime_nsecs_stats[cpu]);
if (total)
ratio = 1000.0 * avg / total;
if (ratio < 0.001) {
ratio *= 1000;
unit = 'K';
}
fprintf(out, " # %8.3f %c/sec ", ratio, unit);
} else {
fprintf(out, " ");
}
}

35
tools/perf/util/stat.c
View File

@ -1,6 +1,6 @@
#include <math.h>
#include "stat.h"
#include "evsel.h"
void update_stats(struct stats *stats, u64 val)
{
@ -61,3 +61,36 @@ double rel_stddev_stats(double stddev, double avg)
return pct;
}
bool __perf_evsel_stat__is(struct perf_evsel *evsel,
enum perf_stat_evsel_id id)
{
struct perf_stat *ps = evsel->priv;
return ps->id == id;
}
#define ID(id, name) [PERF_STAT_EVSEL_ID__##id] = #name
static const char *id_str[PERF_STAT_EVSEL_ID__MAX] = {
ID(NONE, x),
ID(CYCLES_IN_TX, cpu/cycles-t/),
ID(TRANSACTION_START, cpu/tx-start/),
ID(ELISION_START, cpu/el-start/),
ID(CYCLES_IN_TX_CP, cpu/cycles-ct/),
};
#undef ID
void perf_stat_evsel_id_init(struct perf_evsel *evsel)
{
struct perf_stat *ps = evsel->priv;
int i;
/* ps->id is 0 hence PERF_STAT_EVSEL_ID__NONE by default */
for (i = 0; i < PERF_STAT_EVSEL_ID__MAX; i++) {
if (!strcmp(perf_evsel__name(evsel), id_str[i])) {
ps->id = i;
break;
}
}
}

40
tools/perf/util/stat.h
View File

@ -2,6 +2,7 @@
#define __PERF_STATS_H
#include <linux/types.h>
#include <stdio.h>
struct stats
{
@ -9,6 +10,27 @@ struct stats
u64 max, min;
};
enum perf_stat_evsel_id {
PERF_STAT_EVSEL_ID__NONE = 0,
PERF_STAT_EVSEL_ID__CYCLES_IN_TX,
PERF_STAT_EVSEL_ID__TRANSACTION_START,
PERF_STAT_EVSEL_ID__ELISION_START,
PERF_STAT_EVSEL_ID__CYCLES_IN_TX_CP,
PERF_STAT_EVSEL_ID__MAX,
};
struct perf_stat {
struct stats res_stats[3];
enum perf_stat_evsel_id id;
};
enum aggr_mode {
AGGR_NONE,
AGGR_GLOBAL,
AGGR_SOCKET,
AGGR_CORE,
};
void update_stats(struct stats *stats, u64 val);
double avg_stats(struct stats *stats);
double stddev_stats(struct stats *stats);
@ -22,4 +44,22 @@ static inline void init_stats(struct stats *stats)
stats->min = (u64) -1;
stats->max = 0;
}
struct perf_evsel;
bool __perf_evsel_stat__is(struct perf_evsel *evsel,
enum perf_stat_evsel_id id);
#define perf_stat_evsel__is(evsel, id) \
__perf_evsel_stat__is(evsel, PERF_STAT_EVSEL_ID__ ## id)
void perf_stat_evsel_id_init(struct perf_evsel *evsel);
extern struct stats walltime_nsecs_stats;
void perf_stat__reset_shadow_stats(void);
void perf_stat__update_shadow_stats(struct perf_evsel *counter, u64 *count,
int cpu);
void perf_stat__print_shadow_stats(FILE *out, struct perf_evsel *evsel,
double avg, int cpu, enum aggr_mode aggr);
#endif

2
tools/perf/util/symbol-elf.c
View File

@ -1016,7 +1016,7 @@ int dso__load_sym(struct dso *dso, struct map *map,
curr_map = map__new2(start, curr_dso,
map->type);
if (curr_map == NULL) {
dso__delete(curr_dso);
dso__put(curr_dso);
goto out_elf_end;
}
if (adjust_kernel_syms) {

4
tools/perf/util/symbol.c
View File

@ -786,7 +786,7 @@ static int dso__split_kallsyms(struct dso *dso, struct map *map, u64 delta,
curr_map = map__new2(pos->start, ndso, map->type);
if (curr_map == NULL) {
dso__delete(ndso);
dso__put(ndso);
return -1;
}
@ -1364,7 +1364,7 @@ static bool dso__is_compatible_symtab_type(struct dso *dso, bool kmod,
case DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP:
/*
* kernel modules know their symtab type - it's set when
* creating a module dso in machine__new_module().
* creating a module dso in machine__findnew_module_map().
*/
return kmod && dso->symtab_type == type;

54
tools/perf/util/vdso.c
View File

@ -120,14 +120,14 @@ void machine__exit_vdso(struct machine *machine)
zfree(&machine->vdso_info);
}
static struct dso *machine__addnew_vdso(struct machine *machine, const char *short_name,
const char *long_name)
static struct dso *__machine__addnew_vdso(struct machine *machine, const char *short_name,
const char *long_name)
{
struct dso *dso;
dso = dso__new(short_name);
if (dso != NULL) {
dsos__add(&machine->dsos, dso);
__dsos__add(&machine->dsos, dso);
dso__set_long_name(dso, long_name, false);
}
@ -230,27 +230,31 @@ static const char *vdso__get_compat_file(struct vdso_file *vdso_file)
return vdso_file->temp_file_name;
}
static struct dso *vdso__findnew_compat(struct machine *machine,
struct vdso_file *vdso_file)
static struct dso *__machine__findnew_compat(struct machine *machine,
struct vdso_file *vdso_file)
{
const char *file_name;
struct dso *dso;
dso = dsos__find(&machine->dsos, vdso_file->dso_name, true);
pthread_rwlock_wrlock(&machine->dsos.lock);
dso = __dsos__find(&machine->dsos, vdso_file->dso_name, true);
if (dso)
return dso;
goto out_unlock;
file_name = vdso__get_compat_file(vdso_file);
if (!file_name)
return NULL;
goto out_unlock;
return machine__addnew_vdso(machine, vdso_file->dso_name, file_name);
dso = __machine__addnew_vdso(machine, vdso_file->dso_name, file_name);
out_unlock:
pthread_rwlock_unlock(&machine->dsos.lock);
return dso;
}
static int machine__findnew_vdso_compat(struct machine *machine,
struct thread *thread,
struct vdso_info *vdso_info,
struct dso **dso)
static int __machine__findnew_vdso_compat(struct machine *machine,
struct thread *thread,
struct vdso_info *vdso_info,
struct dso **dso)
{
enum dso_type dso_type;
@ -267,10 +271,10 @@ static int machine__findnew_vdso_compat(struct machine *machine,
switch (dso_type) {
case DSO__TYPE_32BIT:
*dso = vdso__findnew_compat(machine, &vdso_info->vdso32);
*dso = __machine__findnew_compat(machine, &vdso_info->vdso32);
return 1;
case DSO__TYPE_X32BIT:
*dso = vdso__findnew_compat(machine, &vdso_info->vdsox32);
*dso = __machine__findnew_compat(machine, &vdso_info->vdsox32);
return 1;
case DSO__TYPE_UNKNOWN:
case DSO__TYPE_64BIT:
@ -285,31 +289,33 @@ struct dso *machine__findnew_vdso(struct machine *machine,
struct thread *thread __maybe_unused)
{
struct vdso_info *vdso_info;
struct dso *dso;
struct dso *dso = NULL;
pthread_rwlock_wrlock(&machine->dsos.lock);
if (!machine->vdso_info)
machine->vdso_info = vdso_info__new();
vdso_info = machine->vdso_info;
if (!vdso_info)
return NULL;
goto out_unlock;
#if BITS_PER_LONG == 64
if (machine__findnew_vdso_compat(machine, thread, vdso_info, &dso))
return dso;
if (__machine__findnew_vdso_compat(machine, thread, vdso_info, &dso))
goto out_unlock;
#endif
dso = dsos__find(&machine->dsos, DSO__NAME_VDSO, true);
dso = __dsos__find(&machine->dsos, DSO__NAME_VDSO, true);
if (!dso) {
char *file;
file = get_file(&vdso_info->vdso);
if (!file)
return NULL;
dso = machine__addnew_vdso(machine, DSO__NAME_VDSO, file);
if (file)
dso = __machine__addnew_vdso(machine, DSO__NAME_VDSO, file);
}
out_unlock:
dso__get(dso);
pthread_rwlock_unlock(&machine->dsos.lock);
return dso;
}