summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--include/linux/perf_event.h4
-rw-r--r--tools/lib/traceevent/event-parse.c104
-rw-r--r--tools/lib/traceevent/event-parse.h34
-rw-r--r--tools/lib/traceevent/event-utils.h6
-rw-r--r--tools/perf/Makefile2
-rw-r--r--tools/perf/util/header.c265
-rw-r--r--tools/perf/util/header.h1
-rw-r--r--tools/perf/util/parse-events-test.c37
-rw-r--r--tools/perf/util/parse-events.c12
-rw-r--r--tools/perf/util/parse-events.h1
-rw-r--r--tools/perf/util/parse-events.l50
-rw-r--r--tools/perf/util/parse-events.y20
-rw-r--r--tools/perf/util/pmu.c50
-rw-r--r--tools/perf/util/pmu.h2
14 files changed, 487 insertions, 101 deletions
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 297ca3db6b4a..28f9cee3fbc3 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -205,8 +205,8 @@ enum perf_event_read_format {
#define PERF_ATTR_SIZE_VER0 64 /* sizeof first published struct */
#define PERF_ATTR_SIZE_VER1 72 /* add: config2 */
#define PERF_ATTR_SIZE_VER2 80 /* add: branch_sample_type */
-#define PERF_ATTR_SIZE_VER3 88 /* add: sample_regs_user */
-#define PERF_ATTR_SIZE_VER4 96 /* add: sample_stack_user */
+#define PERF_ATTR_SIZE_VER3 96 /* add: sample_regs_user */
+ /* add: sample_stack_user */
/*
* Hardware event_id to monitor via a performance monitoring event:
diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index b7c2c491f61e..b5b4d806ffa2 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -4686,9 +4686,8 @@ static int find_event_handle(struct pevent *pevent, struct event_format *event)
*
* /sys/kernel/debug/tracing/events/.../.../format
*/
-int pevent_parse_event(struct pevent *pevent,
- const char *buf, unsigned long size,
- const char *sys)
+enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf,
+ unsigned long size, const char *sys)
{
struct event_format *event;
int ret;
@@ -4697,17 +4696,16 @@ int pevent_parse_event(struct pevent *pevent,
event = alloc_event();
if (!event)
- return -ENOMEM;
+ return PEVENT_ERRNO__MEM_ALLOC_FAILED;
event->name = event_read_name();
if (!event->name) {
/* Bad event? */
- free(event);
- return -1;
+ ret = PEVENT_ERRNO__MEM_ALLOC_FAILED;
+ goto event_alloc_failed;
}
if (strcmp(sys, "ftrace") == 0) {
-
event->flags |= EVENT_FL_ISFTRACE;
if (strcmp(event->name, "bprint") == 0)
@@ -4715,20 +4713,28 @@ int pevent_parse_event(struct pevent *pevent,
}
event->id = event_read_id();
- if (event->id < 0)
- die("failed to read event id");
+ if (event->id < 0) {
+ ret = PEVENT_ERRNO__READ_ID_FAILED;
+ /*
+ * This isn't an allocation error actually.
+ * But as the ID is critical, just bail out.
+ */
+ goto event_alloc_failed;
+ }
event->system = strdup(sys);
- if (!event->system)
- die("failed to allocate system");
+ if (!event->system) {
+ ret = PEVENT_ERRNO__MEM_ALLOC_FAILED;
+ goto event_alloc_failed;
+ }
/* Add pevent to event so that it can be referenced */
event->pevent = pevent;
ret = event_read_format(event);
if (ret < 0) {
- do_warning("failed to read event format for %s", event->name);
- goto event_failed;
+ ret = PEVENT_ERRNO__READ_FORMAT_FAILED;
+ goto event_parse_failed;
}
/*
@@ -4740,10 +4746,9 @@ int pevent_parse_event(struct pevent *pevent,
ret = event_read_print(event);
if (ret < 0) {
- do_warning("failed to read event print fmt for %s",
- event->name);
show_warning = 1;
- goto event_failed;
+ ret = PEVENT_ERRNO__READ_PRINT_FAILED;
+ goto event_parse_failed;
}
show_warning = 1;
@@ -4754,20 +4759,19 @@ int pevent_parse_event(struct pevent *pevent,
struct print_arg *arg, **list;
/* old ftrace had no args */
-
list = &event->print_fmt.args;
for (field = event->format.fields; field; field = field->next) {
arg = alloc_arg();
- *list = arg;
- list = &arg->next;
arg->type = PRINT_FIELD;
arg->field.name = strdup(field->name);
if (!arg->field.name) {
- do_warning("failed to allocate field name");
event->flags |= EVENT_FL_FAILED;
- return -1;
+ free_arg(arg);
+ return PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED;
}
arg->field.field = field;
+ *list = arg;
+ list = &arg->next;
}
return 0;
}
@@ -4778,11 +4782,65 @@ int pevent_parse_event(struct pevent *pevent,
return 0;
- event_failed:
+ event_parse_failed:
event->flags |= EVENT_FL_FAILED;
/* still add it even if it failed */
add_event(pevent, event);
- return -1;
+ return ret;
+
+ event_alloc_failed:
+ free(event->system);
+ free(event->name);
+ free(event);
+ return ret;
+}
+
+#undef _PE
+#define _PE(code, str) str
+static const char * const pevent_error_str[] = {
+ PEVENT_ERRORS
+};
+#undef _PE
+
+int pevent_strerror(struct pevent *pevent, enum pevent_errno errnum,
+ char *buf, size_t buflen)
+{
+ int idx;
+ const char *msg;
+
+ if (errnum >= 0) {
+ msg = strerror_r(errnum, buf, buflen);
+ if (msg != buf) {
+ size_t len = strlen(msg);
+ char *c = mempcpy(buf, msg, min(buflen-1, len));
+ *c = '\0';
+ }
+ return 0;
+ }
+
+ if (errnum <= __PEVENT_ERRNO__START ||
+ errnum >= __PEVENT_ERRNO__END)
+ return -1;
+
+ idx = errnum - __PEVENT_ERRNO__START - 1;
+ msg = pevent_error_str[idx];
+
+ switch (errnum) {
+ case PEVENT_ERRNO__MEM_ALLOC_FAILED:
+ case PEVENT_ERRNO__PARSE_EVENT_FAILED:
+ case PEVENT_ERRNO__READ_ID_FAILED:
+ case PEVENT_ERRNO__READ_FORMAT_FAILED:
+ case PEVENT_ERRNO__READ_PRINT_FAILED:
+ case PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED:
+ snprintf(buf, buflen, "%s", msg);
+ break;
+
+ default:
+ /* cannot reach here */
+ break;
+ }
+
+ return 0;
}
int get_field_val(struct trace_seq *s, struct format_field *field,
diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h
index 5772ad8cb386..527df038a25f 100644
--- a/tools/lib/traceevent/event-parse.h
+++ b/tools/lib/traceevent/event-parse.h
@@ -345,6 +345,34 @@ enum pevent_flag {
PEVENT_NSEC_OUTPUT = 1, /* output in NSECS */
};
+#define PEVENT_ERRORS \
+ _PE(MEM_ALLOC_FAILED, "failed to allocate memory"), \
+ _PE(PARSE_EVENT_FAILED, "failed to parse event"), \
+ _PE(READ_ID_FAILED, "failed to read event id"), \
+ _PE(READ_FORMAT_FAILED, "failed to read event format"), \
+ _PE(READ_PRINT_FAILED, "failed to read event print fmt"), \
+ _PE(OLD_FTRACE_ARG_FAILED,"failed to allocate field name for ftrace")
+
+#undef _PE
+#define _PE(__code, __str) PEVENT_ERRNO__ ## __code
+enum pevent_errno {
+ PEVENT_ERRNO__SUCCESS = 0,
+
+ /*
+ * Choose an arbitrary negative big number not to clash with standard
+ * errno since SUS requires the errno has distinct positive values.
+ * See 'Issue 6' in the link below.
+ *
+ * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
+ */
+ __PEVENT_ERRNO__START = -100000,
+
+ PEVENT_ERRORS,
+
+ __PEVENT_ERRNO__END,
+};
+#undef _PE
+
struct cmdline;
struct cmdline_list;
struct func_map;
@@ -509,8 +537,8 @@ void pevent_print_event(struct pevent *pevent, struct trace_seq *s,
int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size,
int long_size);
-int pevent_parse_event(struct pevent *pevent, const char *buf,
- unsigned long size, const char *sys);
+enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf,
+ unsigned long size, const char *sys);
void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event,
const char *name, struct pevent_record *record,
@@ -561,6 +589,8 @@ int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec);
const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid);
void pevent_event_info(struct trace_seq *s, struct event_format *event,
struct pevent_record *record);
+int pevent_strerror(struct pevent *pevent, enum pevent_errno errnum,
+ char *buf, size_t buflen);
struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type);
struct format_field **pevent_event_common_fields(struct event_format *event);
diff --git a/tools/lib/traceevent/event-utils.h b/tools/lib/traceevent/event-utils.h
index 08296383d1e6..bc075006966e 100644
--- a/tools/lib/traceevent/event-utils.h
+++ b/tools/lib/traceevent/event-utils.h
@@ -39,6 +39,12 @@ void __vdie(const char *fmt, ...);
void __vwarning(const char *fmt, ...);
void __vpr_stat(const char *fmt, ...);
+#define min(x, y) ({ \
+ typeof(x) _min1 = (x); \
+ typeof(y) _min2 = (y); \
+ (void) (&_min1 == &_min2); \
+ _min1 < _min2 ? _min1 : _min2; })
+
static inline char *strim(char *string)
{
char *ret;
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 6bd888d04b6e..722ddee61f9f 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -493,7 +493,7 @@ endif
FLAGS_UNWIND=$(LIBUNWIND_CFLAGS) $(ALL_CFLAGS) $(LIBUNWIND_LDFLAGS) $(ALL_LDFLAGS) $(EXTLIBS) $(LIBUNWIND_LIBS)
ifneq ($(call try-cc,$(SOURCE_LIBUNWIND),$(FLAGS_UNWIND)),y)
- msg := $(warning No libunwind found. Please install libunwind >= 0.99);
+ msg := $(warning No libunwind found, disabling post unwind support. Please install libunwind-dev[el] >= 0.99);
NO_LIBUNWIND := 1
endif # Libunwind support
endif # NO_LIBUNWIND
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 1e5b6aa60523..9696e64c9dbd 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -20,6 +20,7 @@
#include "symbol.h"
#include "debug.h"
#include "cpumap.h"
+#include "pmu.h"
static bool no_buildid_cache = false;
@@ -1004,6 +1005,45 @@ done:
}
/*
+ * File format:
+ *
+ * struct pmu_mappings {
+ * u32 pmu_num;
+ * struct pmu_map {
+ * u32 type;
+ * char name[];
+ * }[pmu_num];
+ * };
+ */
+
+static int write_pmu_mappings(int fd, struct perf_header *h __used,
+ struct perf_evlist *evlist __used)
+{
+ struct perf_pmu *pmu = NULL;
+ off_t offset = lseek(fd, 0, SEEK_CUR);
+ __u32 pmu_num = 0;
+
+ /* write real pmu_num later */
+ do_write(fd, &pmu_num, sizeof(pmu_num));
+
+ while ((pmu = perf_pmu__scan(pmu))) {
+ if (!pmu->name)
+ continue;
+ pmu_num++;
+ do_write(fd, &pmu->type, sizeof(pmu->type));
+ do_write_string(fd, pmu->name);
+ }
+
+ if (pwrite(fd, &pmu_num, sizeof(pmu_num), offset) != sizeof(pmu_num)) {
+ /* discard all */
+ lseek(fd, offset, SEEK_SET);
+ return -1;
+ }
+
+ return 0;
+}
+
+/*
* default get_cpuid(): nothing gets recorded
* actual implementation must be in arch/$(ARCH)/util/header.c
*/
@@ -1148,12 +1188,29 @@ static void print_cpu_topology(struct perf_header *ph, int fd, FILE *fp)
}
}
-static void print_event_desc(struct perf_header *ph, int fd, FILE *fp)
+static void free_event_desc(struct perf_evsel *events)
+{
+ struct perf_evsel *evsel;
+
+ if (!events)
+ return;
+
+ for (evsel = events; evsel->attr.size; evsel++) {
+ if (evsel->name)
+ free(evsel->name);
+ if (evsel->id)
+ free(evsel->id);
+ }
+
+ free(events);
+}
+
+static struct perf_evsel *
+read_event_desc(struct perf_header *ph, int fd)
{
- struct perf_event_attr attr;
- uint64_t id;
+ struct perf_evsel *evsel, *events = NULL;
+ u64 *id;
void *buf = NULL;
- char *str;
u32 nre, sz, nr, i, j;
ssize_t ret;
size_t msz;
@@ -1173,18 +1230,22 @@ static void print_event_desc(struct perf_header *ph, int fd, FILE *fp)
if (ph->needs_swap)
sz = bswap_32(sz);
- memset(&attr, 0, sizeof(attr));
-
/* buffer to hold on file attr struct */
buf = malloc(sz);
if (!buf)
goto error;
- msz = sizeof(attr);
+ /* the last event terminates with evsel->attr.size == 0: */
+ events = calloc(nre + 1, sizeof(*events));
+ if (!events)
+ goto error;
+
+ msz = sizeof(evsel->attr);
if (sz < msz)
msz = sz;
- for (i = 0 ; i < nre; i++) {
+ for (i = 0, evsel = events; i < nre; evsel++, i++) {
+ evsel->idx = i;
/*
* must read entire on-file attr struct to
@@ -1197,7 +1258,7 @@ static void print_event_desc(struct perf_header *ph, int fd, FILE *fp)
if (ph->needs_swap)
perf_event__attr_swap(buf);
- memcpy(&attr, buf, msz);
+ memcpy(&evsel->attr, buf, msz);
ret = read(fd, &nr, sizeof(nr));
if (ret != (ssize_t)sizeof(nr))
@@ -1206,51 +1267,82 @@ static void print_event_desc(struct perf_header *ph, int fd, FILE *fp)
if (ph->needs_swap)
nr = bswap_32(nr);
- str = do_read_string(fd, ph);
- fprintf(fp, "# event : name = %s, ", str);
- free(str);
+ evsel->name = do_read_string(fd, ph);
+
+ if (!nr)
+ continue;
+
+ id = calloc(nr, sizeof(*id));
+ if (!id)
+ goto error;
+ evsel->ids = nr;
+ evsel->id = id;
+
+ for (j = 0 ; j < nr; j++) {
+ ret = read(fd, id, sizeof(*id));
+ if (ret != (ssize_t)sizeof(*id))
+ goto error;
+ if (ph->needs_swap)
+ *id = bswap_64(*id);
+ id++;
+ }
+ }
+out:
+ if (buf)
+ free(buf);
+ return events;
+error:
+ if (events)
+ free_event_desc(events);
+ events = NULL;
+ goto out;
+}
+
+static void print_event_desc(struct perf_header *ph, int fd, FILE *fp)
+{
+ struct perf_evsel *evsel, *events = read_event_desc(ph, fd);
+ u32 j;
+ u64 *id;
+
+ if (!events) {
+ fprintf(fp, "# event desc: not available or unable to read\n");
+ return;
+ }
+
+ for (evsel = events; evsel->attr.size; evsel++) {
+ fprintf(fp, "# event : name = %s, ", evsel->name);
fprintf(fp, "type = %d, config = 0x%"PRIx64
", config1 = 0x%"PRIx64", config2 = 0x%"PRIx64,
- attr.type,
- (u64)attr.config,
- (u64)attr.config1,
- (u64)attr.config2);
+ evsel->attr.type,
+ (u64)evsel->attr.config,
+ (u64)evsel->attr.config1,
+ (u64)evsel->attr.config2);
fprintf(fp, ", excl_usr = %d, excl_kern = %d",
- attr.exclude_user,
- attr.exclude_kernel);
+ evsel->attr.exclude_user,
+ evsel->attr.exclude_kernel);
fprintf(fp, ", excl_host = %d, excl_guest = %d",
- attr.exclude_host,
- attr.exclude_guest);
+ evsel->attr.exclude_host,
+ evsel->attr.exclude_guest);
- fprintf(fp, ", precise_ip = %d", attr.precise_ip);
+ fprintf(fp, ", precise_ip = %d", evsel->attr.precise_ip);
- if (nr)
+ if (evsel->ids) {
fprintf(fp, ", id = {");
-
- for (j = 0 ; j < nr; j++) {
- ret = read(fd, &id, sizeof(id));
- if (ret != (ssize_t)sizeof(id))
- goto error;
-
- if (ph->needs_swap)
- id = bswap_64(id);
-
- if (j)
- fputc(',', fp);
-
- fprintf(fp, " %"PRIu64, id);
- }
- if (nr && j == nr)
+ for (j = 0, id = evsel->id; j < evsel->ids; j++, id++) {
+ if (j)
+ fputc(',', fp);
+ fprintf(fp, " %"PRIu64, *id);
+ }
fprintf(fp, " }");
+ }
+
fputc('\n', fp);
}
- free(buf);
- return;
-error:
- fprintf(fp, "# event desc: not available or unable to read\n");
+
+ free_event_desc(events);
}
static void print_total_mem(struct perf_header *h __used, int fd, FILE *fp)
@@ -1337,6 +1429,43 @@ static void print_branch_stack(struct perf_header *ph __used, int fd __used,
fprintf(fp, "# contains samples with branch stack\n");
}
+static void print_pmu_mappings(struct perf_header *ph, int fd, FILE *fp)
+{
+ const char *delimiter = "# pmu mappings: ";
+ char *name;
+ int ret;
+ u32 pmu_num;
+ u32 type;
+
+ ret = read(fd, &pmu_num, sizeof(pmu_num));
+ if (ret != sizeof(pmu_num))
+ goto error;
+
+ if (!pmu_num) {
+ fprintf(fp, "# pmu mappings: not available\n");
+ return;
+ }
+
+ while (pmu_num) {
+ if (read(fd, &type, sizeof(type)) != sizeof(type))
+ break;
+ name = do_read_string(fd, ph);
+ if (!name)
+ break;
+ pmu_num--;
+ fprintf(fp, "%s%s = %" PRIu32, delimiter, name, type);
+ free(name);
+ delimiter = ", ";
+ }
+
+ fprintf(fp, "\n");
+
+ if (!pmu_num)
+ return;
+error:
+ fprintf(fp, "# pmu mappings: unable to read\n");
+}
+
static int __event_process_build_id(struct build_id_event *bev,
char *filename,
struct perf_session *session)
@@ -1504,6 +1633,56 @@ static int process_build_id(struct perf_file_section *section,
return 0;
}
+static struct perf_evsel *
+perf_evlist__find_by_index(struct perf_evlist *evlist, int idx)
+{
+ struct perf_evsel *evsel;
+
+ list_for_each_entry(evsel, &evlist->entries, node) {
+ if (evsel->idx == idx)
+ return evsel;
+ }
+
+ return NULL;
+}
+
+static void
+perf_evlist__set_event_name(struct perf_evlist *evlist, struct perf_evsel *event)
+{
+ struct perf_evsel *evsel;
+
+ if (!event->name)
+ return;
+
+ evsel = perf_evlist__find_by_index(evlist, event->idx);
+ if (!evsel)
+ return;
+
+ if (evsel->name)
+ return;
+
+ evsel->name = strdup(event->name);
+}
+
+static int
+process_event_desc(struct perf_file_section *section __unused,
+ struct perf_header *header, int feat __unused, int fd,
+ void *data __used)
+{
+ struct perf_session *session = container_of(header, struct perf_session, header);
+ struct perf_evsel *evsel, *events = read_event_desc(header, fd);
+
+ if (!events)
+ return 0;
+
+ for (evsel = events; evsel->attr.size; evsel++)
+ perf_evlist__set_event_name(session->evlist, evsel);
+
+ free_event_desc(events);
+
+ return 0;
+}
+
struct feature_ops {
int (*write)(int fd, struct perf_header *h, struct perf_evlist *evlist);
void (*print)(struct perf_header *h, int fd, FILE *fp);
@@ -1537,11 +1716,12 @@ static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = {
FEAT_OPA(HEADER_CPUDESC, cpudesc),
FEAT_OPA(HEADER_CPUID, cpuid),
FEAT_OPA(HEADER_TOTAL_MEM, total_mem),
- FEAT_OPA(HEADER_EVENT_DESC, event_desc),
+ FEAT_OPP(HEADER_EVENT_DESC, event_desc),
FEAT_OPA(HEADER_CMDLINE, cmdline),
FEAT_OPF(HEADER_CPU_TOPOLOGY, cpu_topology),
FEAT_OPF(HEADER_NUMA_TOPOLOGY, numa_topology),
FEAT_OPA(HEADER_BRANCH_STACK, branch_stack),
+ FEAT_OPA(HEADER_PMU_MAPPINGS, pmu_mappings),
};
struct header_print_data {
@@ -1831,7 +2011,6 @@ static const int attr_file_abi_sizes[] = {
[1] = PERF_ATTR_SIZE_VER1,
[2] = PERF_ATTR_SIZE_VER2,
[3] = PERF_ATTR_SIZE_VER3,
- [4] = PERF_ATTR_SIZE_VER4,
0,
};
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index 24962e707e5b..9d5eedceda72 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -28,6 +28,7 @@ enum {
HEADER_CPU_TOPOLOGY,
HEADER_NUMA_TOPOLOGY,
HEADER_BRANCH_STACK,
+ HEADER_PMU_MAPPINGS,
HEADER_LAST_FEATURE,
HEADER_FEAT_BITS = 256,
};
diff --git a/tools/perf/util/parse-events-test.c b/tools/perf/util/parse-events-test.c
index bf055ce1916e..bc8b65130ae0 100644
--- a/tools/perf/util/parse-events-test.c
+++ b/tools/perf/util/parse-events-test.c
@@ -301,12 +301,13 @@ static int test__checkevent_breakpoint_modifier(struct perf_evlist *evlist)
{
struct perf_evsel *evsel = perf_evlist__first(evlist);
+
TEST_ASSERT_VAL("wrong exclude_user", !evsel->attr.exclude_user);
TEST_ASSERT_VAL("wrong exclude_kernel", evsel->attr.exclude_kernel);
TEST_ASSERT_VAL("wrong exclude_hv", evsel->attr.exclude_hv);
TEST_ASSERT_VAL("wrong precise_ip", !evsel->attr.precise_ip);
TEST_ASSERT_VAL("wrong name",
- !strcmp(perf_evsel__name(evsel), "mem:0x0:rw:u"));
+ !strcmp(perf_evsel__name(evsel), "mem:0:u"));
return test__checkevent_breakpoint(evlist);
}
@@ -320,7 +321,7 @@ static int test__checkevent_breakpoint_x_modifier(struct perf_evlist *evlist)
TEST_ASSERT_VAL("wrong exclude_hv", evsel->attr.exclude_hv);
TEST_ASSERT_VAL("wrong precise_ip", !evsel->attr.precise_ip);
TEST_ASSERT_VAL("wrong name",
- !strcmp(perf_evsel__name(evsel), "mem:0x0:x:k"));
+ !strcmp(perf_evsel__name(evsel), "mem:0:x:k"));
return test__checkevent_breakpoint_x(evlist);
}
@@ -334,7 +335,7 @@ static int test__checkevent_breakpoint_r_modifier(struct perf_evlist *evlist)
TEST_ASSERT_VAL("wrong exclude_hv", !evsel->attr.exclude_hv);
TEST_ASSERT_VAL("wrong precise_ip", evsel->attr.precise_ip);
TEST_ASSERT_VAL("wrong name",
- !strcmp(perf_evsel__name(evsel), "mem:0x0:r:hp"));
+ !strcmp(perf_evsel__name(evsel), "mem:0:r:hp"));
return test__checkevent_breakpoint_r(evlist);
}
@@ -348,7 +349,7 @@ static int test__checkevent_breakpoint_w_modifier(struct perf_evlist *evlist)
TEST_ASSERT_VAL("wrong exclude_hv", evsel->attr.exclude_hv);
TEST_ASSERT_VAL("wrong precise_ip", evsel->attr.precise_ip);
TEST_ASSERT_VAL("wrong name",
- !strcmp(perf_evsel__name(evsel), "mem:0x0:w:up"));
+ !strcmp(perf_evsel__name(evsel), "mem:0:w:up"));
return test__checkevent_breakpoint_w(evlist);
}
@@ -362,7 +363,7 @@ static int test__checkevent_breakpoint_rw_modifier(struct perf_evlist *evlist)
TEST_ASSERT_VAL("wrong exclude_hv", evsel->attr.exclude_hv);
TEST_ASSERT_VAL("wrong precise_ip", evsel->attr.precise_ip);
TEST_ASSERT_VAL("wrong name",
- !strcmp(perf_evsel__name(evsel), "mem:0x0:rw:kp"));
+ !strcmp(perf_evsel__name(evsel), "mem:0:rw:kp"));
return test__checkevent_breakpoint_rw(evlist);
}
@@ -437,7 +438,7 @@ static int test__checkevent_pmu_name(struct perf_evlist *evlist)
TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->attr.type);
TEST_ASSERT_VAL("wrong config", 2 == evsel->attr.config);
TEST_ASSERT_VAL("wrong name",
- !strcmp(perf_evsel__name(evsel), "raw 0x2:u"));
+ !strcmp(perf_evsel__name(evsel), "cpu/config=2/u"));
return 0;
}
@@ -948,19 +949,19 @@ static int test_event(struct test__event_st *e)
static int test_events(struct test__event_st *events, unsigned cnt)
{
- int ret = 0;
+ int ret1, ret2 = 0;
unsigned i;
for (i = 0; i < cnt; i++) {
struct test__event_st *e = &events[i];
pr_debug("running test %d '%s'\n", i, e->name);
- ret = test_event(e);
- if (ret)
- break;
+ ret1 = test_event(e);
+ if (ret1)
+ ret2 = ret1;
}
- return ret;
+ return ret2;
}
static int test_term(struct test__term *t)
@@ -1021,13 +1022,13 @@ static int test_pmu(void)
int parse_events__test(void)
{
- int ret;
+ int ret1, ret2 = 0;
#define TEST_EVENTS(tests) \
do { \
- ret = test_events(tests, ARRAY_SIZE(tests)); \
- if (ret) \
- return ret; \
+ ret1 = test_events(tests, ARRAY_SIZE(tests)); \
+ if (!ret2) \
+ ret2 = ret1; \
} while (0)
TEST_EVENTS(test__events);
@@ -1035,5 +1036,9 @@ do { \
if (test_pmu())
TEST_EVENTS(test__events_pmu);
- return test_terms(test__terms, ARRAY_SIZE(test__terms));
+ ret1 = test_terms(test__terms, ARRAY_SIZE(test__terms));
+ if (!ret2)
+ ret2 = ret1;
+
+ return ret2;
}
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 925784a930a8..b24630398b92 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -751,6 +751,18 @@ int parse_events__modifier_event(struct list_head *list, char *str, bool add)
return 0;
}
+int parse_events_name(struct list_head *list, char *name)
+{
+ struct perf_evsel *evsel;
+
+ list_for_each_entry(evsel, list, node) {
+ if (!evsel->name)
+ evsel->name = strdup(name);
+ }
+
+ return 0;
+}
+
static int parse_events__scanner(const char *str, void *data, int start_token)
{
YY_BUFFER_STATE buffer;
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index 0b9782dc3da2..c356e443448d 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -81,6 +81,7 @@ int parse_events__term_clone(struct parse_events__term **new,
void parse_events__free_terms(struct list_head *terms);
int parse_events__modifier_event(struct list_head *list, char *str, bool add);
int parse_events__modifier_group(struct list_head *list, char *event_mod);
+int parse_events_name(struct list_head *list, char *name);
int parse_events_add_tracepoint(struct list_head **list, int *idx,
char *sys, char *event);
int parse_events_add_numeric(struct list_head **list, int *idx,
diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
index 2c0d006d43db..f5e28dc68270 100644
--- a/tools/perf/util/parse-events.l
+++ b/tools/perf/util/parse-events.l
@@ -70,6 +70,12 @@ static int term(yyscan_t scanner, int type)
%}
%x mem
+%s config
+%x event
+
+group [^,{}/]*[{][^}]*[}][^,{}/]*
+event_pmu [^,{}/]+[/][^/]*[/][^,{}/]*
+event [^,{}/]+
num_dec [0-9]+
num_hex 0x[a-fA-F0-9]+
@@ -84,7 +90,13 @@ modifier_bp [rwx]{1,3}
{
int start_token;
- start_token = (int) parse_events_get_extra(yyscanner);
+ start_token = parse_events_get_extra(yyscanner);
+
+ if (start_token == PE_START_TERMS)
+ BEGIN(config);
+ else if (start_token == PE_START_EVENTS)
+ BEGIN(event);
+
if (start_token) {
parse_events_set_extra(NULL, yyscanner);
return start_token;
@@ -92,6 +104,26 @@ modifier_bp [rwx]{1,3}
}
%}
+<event>{
+
+{group} {
+ BEGIN(INITIAL); yyless(0);
+ }
+
+{event_pmu} |
+{event} {
+ str(yyscanner, PE_EVENT_NAME);
+ BEGIN(INITIAL); yyless(0);
+ return PE_EVENT_NAME;
+ }
+
+. |
+<<EOF>> {
+ BEGIN(INITIAL); yyless(0);
+ }
+
+}
+
cpu-cycles|cycles { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); }
stalled-cycles-frontend|idle-cycles-frontend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); }
stalled-cycles-backend|idle-cycles-backend { return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); }
@@ -127,18 +159,16 @@ speculative-read|speculative-load |
refs|Reference|ops|access |
misses|miss { return str(yyscanner, PE_NAME_CACHE_OP_RESULT); }
- /*
- * These are event config hardcoded term names to be specified
- * within xxx/.../ syntax. So far we dont clash with other names,
- * so we can put them here directly. In case the we have a conflict
- * in future, this needs to go into '//' condition block.
- */
+<config>{
config { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG); }
config1 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG1); }
config2 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG2); }
name { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NAME); }
period { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); }
branch_type { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); }
+, { return ','; }
+"/" { BEGIN(INITIAL); return '/'; }
+}
mem: { BEGIN(mem); return PE_PREFIX_MEM; }
r{num_raw_hex} { return raw(yyscanner); }
@@ -147,11 +177,11 @@ r{num_raw_hex} { return raw(yyscanner); }
{modifier_event} { return str(yyscanner, PE_MODIFIER_EVENT); }
{name} { return str(yyscanner, PE_NAME); }
-"/" { return '/'; }
+"/" { BEGIN(config); return '/'; }
- { return '-'; }
-, { return ','; }
+, { BEGIN(event); return ','; }
: { return ':'; }
-"{" { return '{'; }
+"{" { BEGIN(event); return '{'; }
"}" { return '}'; }
= { return '='; }
\n { }
diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index 66850f820df9..42d9a17b83b1 100644
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -27,6 +27,7 @@ do { \
%token PE_START_EVENTS PE_START_TERMS
%token PE_VALUE PE_VALUE_SYM_HW PE_VALUE_SYM_SW PE_RAW PE_TERM
+%token PE_EVENT_NAME
%token PE_NAME
%token PE_MODIFIER_EVENT PE_MODIFIER_BP
%token PE_NAME_CACHE_TYPE PE_NAME_CACHE_OP_RESULT
@@ -42,6 +43,7 @@ do { \
%type <str> PE_NAME_CACHE_OP_RESULT
%type <str> PE_MODIFIER_EVENT
%type <str> PE_MODIFIER_BP
+%type <str> PE_EVENT_NAME
%type <num> value_sym
%type <head> event_config
%type <term> event_term
@@ -53,6 +55,8 @@ do { \
%type <head> event_legacy_numeric
%type <head> event_legacy_raw
%type <head> event_def
+%type <head> event_mod
+%type <head> event_name
%type <head> event
%type <head> events
%type <head> group_def
@@ -143,8 +147,10 @@ events ',' event
|
event
-event:
-event_def PE_MODIFIER_EVENT
+event: event_mod
+
+event_mod:
+event_name PE_MODIFIER_EVENT
{
struct list_head *list = $1;
@@ -157,6 +163,16 @@ event_def PE_MODIFIER_EVENT
$$ = list;
}
|
+event_name
+
+event_name:
+PE_EVENT_NAME event_def
+{
+ ABORT_ON(parse_events_name($2, $1));
+ free($1);
+ $$ = $2;
+}
+|
event_def
event_def: event_pmu |
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 67715a42cd6d..6631d828db3d 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -10,6 +10,8 @@
#include "pmu.h"
#include "parse-events.h"
+#define EVENT_SOURCE_DEVICE_PATH "/bus/event_source/devices/"
+
int perf_pmu_parse(struct list_head *list, char *name);
extern FILE *perf_pmu_in;
@@ -69,7 +71,7 @@ static int pmu_format(char *name, struct list_head *format)
return -1;
snprintf(path, PATH_MAX,
- "%s/bus/event_source/devices/%s/format", sysfs, name);
+ "%s" EVENT_SOURCE_DEVICE_PATH "%s/format", sysfs, name);
if (stat(path, &st) < 0)
return 0; /* no error if format does not exist */
@@ -206,7 +208,7 @@ static int pmu_type(char *name, __u32 *type)
return -1;
snprintf(path, PATH_MAX,
- "%s/bus/event_source/devices/%s/type", sysfs, name);
+ "%s" EVENT_SOURCE_DEVICE_PATH "%s/type", sysfs, name);
if (stat(path, &st) < 0)
return -1;
@@ -222,6 +224,35 @@ static int pmu_type(char *name, __u32 *type)
return ret;
}
+/* Add all pmus in sysfs to pmu list: */
+static void pmu_read_sysfs(void)
+{
+ char path[PATH_MAX];
+ const char *sysfs;
+ DIR *dir;
+ struct dirent *dent;
+
+ sysfs = sysfs_find_mountpoint();
+ if (!sysfs)
+ return;
+
+ snprintf(path, PATH_MAX,
+ "%s" EVENT_SOURCE_DEVICE_PATH, sysfs);
+
+ dir = opendir(path);
+ if (!dir)
+ return;
+
+ while ((dent = readdir(dir))) {
+ if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
+ continue;
+ /* add to static LIST_HEAD(pmus): */
+ perf_pmu__find(dent->d_name);
+ }
+
+ closedir(dir);
+}
+
static struct perf_pmu *pmu_lookup(char *name)
{
struct perf_pmu *pmu;
@@ -267,6 +298,21 @@ static struct perf_pmu *pmu_find(char *name)
return NULL;
}
+struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu)
+{
+ /*
+ * pmu iterator: If pmu is NULL, we start at the begin,
+ * otherwise return the next pmu. Returns NULL on end.
+ */
+ if (!pmu) {
+ pmu_read_sysfs();
+ pmu = list_prepare_entry(pmu, &pmus, list);
+ }
+ list_for_each_entry_continue(pmu, &pmus, list)
+ return pmu;
+ return NULL;
+}
+
struct perf_pmu *perf_pmu__find(char *name)
{
struct perf_pmu *pmu;
diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h
index 535f2c5258ab..47f68d3cc5d1 100644
--- a/tools/perf/util/pmu.h
+++ b/tools/perf/util/pmu.h
@@ -46,5 +46,7 @@ int perf_pmu__new_format(struct list_head *list, char *name,
int config, unsigned long *bits);
void perf_pmu__set_format(unsigned long *bits, long from, long to);
+struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu);
+
int perf_pmu__test(void);
#endif /* __PMU_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-30 03:42:35 +0000