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-rw-r--r--tools/perf/util/evsel.c227
1 files changed, 163 insertions, 64 deletions
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index d5fbcf8c7aa7..66fa45198a11 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -36,6 +36,7 @@
#include "debug.h"
#include "trace-event.h"
#include "stat.h"
+#include "memswap.h"
#include "util/parse-branch-options.h"
#include "sane_ctype.h"
@@ -650,9 +651,9 @@ int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size)
return ret;
}
-void perf_evsel__config_callchain(struct perf_evsel *evsel,
- struct record_opts *opts,
- struct callchain_param *param)
+static void __perf_evsel__config_callchain(struct perf_evsel *evsel,
+ struct record_opts *opts,
+ struct callchain_param *param)
{
bool function = perf_evsel__is_function_event(evsel);
struct perf_event_attr *attr = &evsel->attr;
@@ -698,6 +699,14 @@ void perf_evsel__config_callchain(struct perf_evsel *evsel,
}
}
+void perf_evsel__config_callchain(struct perf_evsel *evsel,
+ struct record_opts *opts,
+ struct callchain_param *param)
+{
+ if (param->enabled)
+ return __perf_evsel__config_callchain(evsel, opts, param);
+}
+
static void
perf_evsel__reset_callgraph(struct perf_evsel *evsel,
struct callchain_param *param)
@@ -717,19 +726,19 @@ perf_evsel__reset_callgraph(struct perf_evsel *evsel,
}
static void apply_config_terms(struct perf_evsel *evsel,
- struct record_opts *opts)
+ struct record_opts *opts, bool track)
{
struct perf_evsel_config_term *term;
struct list_head *config_terms = &evsel->config_terms;
struct perf_event_attr *attr = &evsel->attr;
- struct callchain_param param;
+ /* callgraph default */
+ struct callchain_param param = {
+ .record_mode = callchain_param.record_mode,
+ };
u32 dump_size = 0;
int max_stack = 0;
const char *callgraph_buf = NULL;
- /* callgraph default */
- param.record_mode = callchain_param.record_mode;
-
list_for_each_entry(term, config_terms, list) {
switch (term->type) {
case PERF_EVSEL__CONFIG_TERM_PERIOD:
@@ -779,6 +788,8 @@ static void apply_config_terms(struct perf_evsel *evsel,
case PERF_EVSEL__CONFIG_TERM_OVERWRITE:
attr->write_backward = term->val.overwrite ? 1 : 0;
break;
+ case PERF_EVSEL__CONFIG_TERM_DRV_CFG:
+ break;
default:
break;
}
@@ -786,6 +797,8 @@ static void apply_config_terms(struct perf_evsel *evsel,
/* User explicitly set per-event callgraph, clear the old setting and reset. */
if ((callgraph_buf != NULL) || (dump_size > 0) || max_stack) {
+ bool sample_address = false;
+
if (max_stack) {
param.max_stack = max_stack;
if (callgraph_buf == NULL)
@@ -805,6 +818,8 @@ static void apply_config_terms(struct perf_evsel *evsel,
evsel->name);
return;
}
+ if (param.record_mode == CALLCHAIN_DWARF)
+ sample_address = true;
}
}
if (dump_size > 0) {
@@ -817,8 +832,14 @@ static void apply_config_terms(struct perf_evsel *evsel,
perf_evsel__reset_callgraph(evsel, &callchain_param);
/* set perf-event callgraph */
- if (param.enabled)
+ if (param.enabled) {
+ if (sample_address) {
+ perf_evsel__set_sample_bit(evsel, ADDR);
+ perf_evsel__set_sample_bit(evsel, DATA_SRC);
+ evsel->attr.mmap_data = track;
+ }
perf_evsel__config_callchain(evsel, opts, &param);
+ }
}
}
@@ -1049,7 +1070,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts,
* Apply event specific term settings,
* it overloads any global configuration.
*/
- apply_config_terms(evsel, opts);
+ apply_config_terms(evsel, opts, track);
evsel->ignore_missing_thread = opts->ignore_missing_thread;
}
@@ -1574,6 +1595,7 @@ int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr,
PRINT_ATTRf(use_clockid, p_unsigned);
PRINT_ATTRf(context_switch, p_unsigned);
PRINT_ATTRf(write_backward, p_unsigned);
+ PRINT_ATTRf(namespaces, p_unsigned);
PRINT_ATTRn("{ wakeup_events, wakeup_watermark }", wakeup_events, p_unsigned);
PRINT_ATTRf(bp_type, p_unsigned);
@@ -1596,10 +1618,46 @@ static int __open_attr__fprintf(FILE *fp, const char *name, const char *val,
return fprintf(fp, " %-32s %s\n", name, val);
}
+static void perf_evsel__remove_fd(struct perf_evsel *pos,
+ int nr_cpus, int nr_threads,
+ int thread_idx)
+{
+ for (int cpu = 0; cpu < nr_cpus; cpu++)
+ for (int thread = thread_idx; thread < nr_threads - 1; thread++)
+ FD(pos, cpu, thread) = FD(pos, cpu, thread + 1);
+}
+
+static int update_fds(struct perf_evsel *evsel,
+ int nr_cpus, int cpu_idx,
+ int nr_threads, int thread_idx)
+{
+ struct perf_evsel *pos;
+
+ if (cpu_idx >= nr_cpus || thread_idx >= nr_threads)
+ return -EINVAL;
+
+ evlist__for_each_entry(evsel->evlist, pos) {
+ nr_cpus = pos != evsel ? nr_cpus : cpu_idx;
+
+ perf_evsel__remove_fd(pos, nr_cpus, nr_threads, thread_idx);
+
+ /*
+ * Since fds for next evsel has not been created,
+ * there is no need to iterate whole event list.
+ */
+ if (pos == evsel)
+ break;
+ }
+ return 0;
+}
+
static bool ignore_missing_thread(struct perf_evsel *evsel,
+ int nr_cpus, int cpu,
struct thread_map *threads,
int thread, int err)
{
+ pid_t ignore_pid = thread_map__pid(threads, thread);
+
if (!evsel->ignore_missing_thread)
return false;
@@ -1615,11 +1673,18 @@ static bool ignore_missing_thread(struct perf_evsel *evsel,
if (threads->nr == 1)
return false;
+ /*
+ * We should remove fd for missing_thread first
+ * because thread_map__remove() will decrease threads->nr.
+ */
+ if (update_fds(evsel, nr_cpus, cpu, threads->nr, thread))
+ return false;
+
if (thread_map__remove(threads, thread))
return false;
pr_warning("WARNING: Ignored open failure for pid %d\n",
- thread_map__pid(threads, thread));
+ ignore_pid);
return true;
}
@@ -1724,7 +1789,7 @@ retry_open:
if (fd < 0) {
err = -errno;
- if (ignore_missing_thread(evsel, threads, thread, err)) {
+ if (ignore_missing_thread(evsel, cpus->nr, cpu, threads, thread, err)) {
/*
* We just removed 1 thread, so take a step
* back on thread index and lower the upper
@@ -1960,6 +2025,20 @@ static inline bool overflow(const void *endp, u16 max_size, const void *offset,
#define OVERFLOW_CHECK_u64(offset) \
OVERFLOW_CHECK(offset, sizeof(u64), sizeof(u64))
+static int
+perf_event__check_size(union perf_event *event, unsigned int sample_size)
+{
+ /*
+ * The evsel's sample_size is based on PERF_SAMPLE_MASK which includes
+ * up to PERF_SAMPLE_PERIOD. After that overflow() must be used to
+ * check the format does not go past the end of the event.
+ */
+ if (sample_size + sizeof(event->header) > event->header.size)
+ return -EFAULT;
+
+ return 0;
+}
+
int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
struct perf_sample *data)
{
@@ -1981,6 +2060,9 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
data->stream_id = data->id = data->time = -1ULL;
data->period = evsel->attr.sample_period;
data->cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
+ data->misc = event->header.misc;
+ data->id = -1ULL;
+ data->data_src = PERF_MEM_DATA_SRC_NONE;
if (event->header.type != PERF_RECORD_SAMPLE) {
if (!evsel->attr.sample_id_all)
@@ -1990,15 +2072,9 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
array = event->sample.array;
- /*
- * The evsel's sample_size is based on PERF_SAMPLE_MASK which includes
- * up to PERF_SAMPLE_PERIOD. After that overflow() must be used to
- * check the format does not go past the end of the event.
- */
- if (evsel->sample_size + sizeof(event->header) > event->header.size)
+ if (perf_event__check_size(event, evsel->sample_size))
return -EFAULT;
- data->id = -1ULL;
if (type & PERF_SAMPLE_IDENTIFIER) {
data->id = *array;
array++;
@@ -2028,7 +2104,6 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
array++;
}
- data->addr = 0;
if (type & PERF_SAMPLE_ADDR) {
data->addr = *array;
array++;
@@ -2120,14 +2195,27 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
if (type & PERF_SAMPLE_RAW) {
OVERFLOW_CHECK_u64(array);
u.val64 = *array;
- if (WARN_ONCE(swapped,
- "Endianness of raw data not corrected!\n")) {
- /* undo swap of u64, then swap on individual u32s */
+
+ /*
+ * Undo swap of u64, then swap on individual u32s,
+ * get the size of the raw area and undo all of the
+ * swap. The pevent interface handles endianity by
+ * itself.
+ */
+ if (swapped) {
u.val64 = bswap_64(u.val64);
u.val32[0] = bswap_32(u.val32[0]);
u.val32[1] = bswap_32(u.val32[1]);
}
data->raw_size = u.val32[0];
+
+ /*
+ * The raw data is aligned on 64bits including the
+ * u32 size, so it's safe to use mem_bswap_64.
+ */
+ if (swapped)
+ mem_bswap_64((void *) array, data->raw_size);
+
array = (void *)array + sizeof(u32);
OVERFLOW_CHECK(array, data->raw_size, max_size);
@@ -2192,14 +2280,12 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
array++;
}
- data->data_src = PERF_MEM_DATA_SRC_NONE;
if (type & PERF_SAMPLE_DATA_SRC) {
OVERFLOW_CHECK_u64(array);
data->data_src = *array;
array++;
}
- data->transaction = 0;
if (type & PERF_SAMPLE_TRANSACTION) {
OVERFLOW_CHECK_u64(array);
data->transaction = *array;
@@ -2232,6 +2318,50 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
return 0;
}
+int perf_evsel__parse_sample_timestamp(struct perf_evsel *evsel,
+ union perf_event *event,
+ u64 *timestamp)
+{
+ u64 type = evsel->attr.sample_type;
+ const u64 *array;
+
+ if (!(type & PERF_SAMPLE_TIME))
+ return -1;
+
+ if (event->header.type != PERF_RECORD_SAMPLE) {
+ struct perf_sample data = {
+ .time = -1ULL,
+ };
+
+ if (!evsel->attr.sample_id_all)
+ return -1;
+ if (perf_evsel__parse_id_sample(evsel, event, &data))
+ return -1;
+
+ *timestamp = data.time;
+ return 0;
+ }
+
+ array = event->sample.array;
+
+ if (perf_event__check_size(event, evsel->sample_size))
+ return -EFAULT;
+
+ if (type & PERF_SAMPLE_IDENTIFIER)
+ array++;
+
+ if (type & PERF_SAMPLE_IP)
+ array++;
+
+ if (type & PERF_SAMPLE_TID)
+ array++;
+
+ if (type & PERF_SAMPLE_TIME)
+ *timestamp = *array;
+
+ return 0;
+}
+
size_t perf_event__sample_event_size(const struct perf_sample *sample, u64 type,
u64 read_format)
{
@@ -2342,8 +2472,7 @@ size_t perf_event__sample_event_size(const struct perf_sample *sample, u64 type,
int perf_event__synthesize_sample(union perf_event *event, u64 type,
u64 read_format,
- const struct perf_sample *sample,
- bool swapped)
+ const struct perf_sample *sample)
{
u64 *array;
size_t sz;
@@ -2368,15 +2497,6 @@ int perf_event__synthesize_sample(union perf_event *event, u64 type,
if (type & PERF_SAMPLE_TID) {
u.val32[0] = sample->pid;
u.val32[1] = sample->tid;
- if (swapped) {
- /*
- * Inverse of what is done in perf_evsel__parse_sample
- */
- u.val32[0] = bswap_32(u.val32[0]);
- u.val32[1] = bswap_32(u.val32[1]);
- u.val64 = bswap_64(u.val64);
- }
-
*array = u.val64;
array++;
}
@@ -2403,13 +2523,7 @@ int perf_event__synthesize_sample(union perf_event *event, u64 type,
if (type & PERF_SAMPLE_CPU) {
u.val32[0] = sample->cpu;
- if (swapped) {
- /*
- * Inverse of what is done in perf_evsel__parse_sample
- */
- u.val32[0] = bswap_32(u.val32[0]);
- u.val64 = bswap_64(u.val64);
- }
+ u.val32[1] = 0;
*array = u.val64;
array++;
}
@@ -2456,15 +2570,6 @@ int perf_event__synthesize_sample(union perf_event *event, u64 type,
if (type & PERF_SAMPLE_RAW) {
u.val32[0] = sample->raw_size;
- if (WARN_ONCE(swapped,
- "Endianness of raw data not corrected!\n")) {
- /*
- * Inverse of what is done in perf_evsel__parse_sample
- */
- u.val32[0] = bswap_32(u.val32[0]);
- u.val32[1] = bswap_32(u.val32[1]);
- u.val64 = bswap_64(u.val64);
- }
*array = u.val64;
array = (void *)array + sizeof(u32);
@@ -2743,8 +2848,9 @@ int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target,
break;
case EOPNOTSUPP:
if (evsel->attr.sample_period != 0)
- return scnprintf(msg, size, "%s",
- "PMU Hardware doesn't support sampling/overflow-interrupts.");
+ return scnprintf(msg, size,
+ "%s: PMU Hardware doesn't support sampling/overflow-interrupts. Try 'perf stat'",
+ perf_evsel__name(evsel));
if (evsel->attr.precise_ip)
return scnprintf(msg, size, "%s",
"\'precise\' request may not be supported. Try removing 'p' modifier.");
@@ -2781,16 +2887,9 @@ int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target,
perf_evsel__name(evsel));
}
-char *perf_evsel__env_arch(struct perf_evsel *evsel)
-{
- if (evsel && evsel->evlist && evsel->evlist->env)
- return evsel->evlist->env->arch;
- return NULL;
-}
-
-char *perf_evsel__env_cpuid(struct perf_evsel *evsel)
+struct perf_env *perf_evsel__env(struct perf_evsel *evsel)
{
- if (evsel && evsel->evlist && evsel->evlist->env)
- return evsel->evlist->env->cpuid;
+ if (evsel && evsel->evlist)
+ return evsel->evlist->env;
return NULL;
}