perf test: Use perf_evsel__newtp constructor in the tracepoint tests

Removing one trace_event__id function, not used anymore.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-13p2ov2rg166y73j9uazukma@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/Makefile

@@ -487,7 +487,6 @@ LIB_OBJS += $(OUTPUT)tests/rdpmc.o
 LIB_OBJS += $(OUTPUT)tests/evsel-roundtrip-name.o
 LIB_OBJS += $(OUTPUT)tests/evsel-tp-sched.o
 LIB_OBJS += $(OUTPUT)tests/pmu.o
-LIB_OBJS += $(OUTPUT)tests/util.o
 
 BUILTIN_OBJS += $(OUTPUT)builtin-annotate.o
 BUILTIN_OBJS += $(OUTPUT)builtin-bench.o

tools/perf/tests/mmap-basic.c

@@ -22,36 +22,16 @@ int test__basic_mmap(void)
 	struct thread_map *threads;
 	struct cpu_map *cpus;
 	struct perf_evlist *evlist;
-	struct perf_event_attr attr = {
-		.type		= PERF_TYPE_TRACEPOINT,
-		.read_format	= PERF_FORMAT_ID,
-		.sample_type	= PERF_SAMPLE_ID,
-		.watermark	= 0,
-	};
 	cpu_set_t cpu_set;
 	const char *syscall_names[] = { "getsid", "getppid", "getpgrp",
 					"getpgid", };
 	pid_t (*syscalls[])(void) = { (void *)getsid, getppid, getpgrp,
 				      (void*)getpgid };
 #define nsyscalls ARRAY_SIZE(syscall_names)
-	int ids[nsyscalls];
 	unsigned int nr_events[nsyscalls],
 		     expected_nr_events[nsyscalls], i, j;
 	struct perf_evsel *evsels[nsyscalls], *evsel;
 
-	for (i = 0; i < nsyscalls; ++i) {
-		char name[64];
-
-		snprintf(name, sizeof(name), "sys_enter_%s", syscall_names[i]);
-		ids[i] = trace_event__id(name);
-		if (ids[i] < 0) {
-			pr_debug("Is debugfs mounted on /sys/kernel/debug?\n");
-			return -1;
-		}
-		nr_events[i] = 0;
-		expected_nr_events[i] = random() % 257;
-	}
-
 	threads = thread_map__new(-1, getpid(), UINT_MAX);
 	if (threads == NULL) {
 		pr_debug("thread_map__new\n");
@@ -79,18 +59,20 @@ int test__basic_mmap(void)
 		goto out_free_cpus;
 	}
 
-	/* anonymous union fields, can't be initialized above */
-	attr.wakeup_events = 1;
-	attr.sample_period = 1;
-
 	for (i = 0; i < nsyscalls; ++i) {
-		attr.config = ids[i];
-		evsels[i] = perf_evsel__new(&attr, i);
+		char name[64];
+
+		snprintf(name, sizeof(name), "sys_enter_%s", syscall_names[i]);
+		evsels[i] = perf_evsel__newtp("syscalls", name, i);
 		if (evsels[i] == NULL) {
 			pr_debug("perf_evsel__new\n");
 			goto out_free_evlist;
 		}
 
+		evsels[i]->attr.wakeup_events = 1;
+		evsels[i]->attr.read_format |= PERF_FORMAT_ID;
+		perf_evsel__set_sample_bit(evsels[i], ID);
+
 		perf_evlist__add(evlist, evsels[i]);
 
 		if (perf_evsel__open(evsels[i], cpus, threads) < 0) {
@@ -99,6 +81,9 @@ int test__basic_mmap(void)
 				 strerror(errno));
 			goto out_close_fd;
 		}
+
+		nr_events[i] = 0;
+		expected_nr_events[i] = 1 + rand() % 127;
 	}
 
 	if (perf_evlist__mmap(evlist, 128, true) < 0) {

tools/perf/tests/open-syscall-all-cpus.c

@@ -7,20 +7,12 @@
 int test__open_syscall_event_on_all_cpus(void)
 {
 	int err = -1, fd, cpu;
-	struct thread_map *threads;
 	struct cpu_map *cpus;
 	struct perf_evsel *evsel;
-	struct perf_event_attr attr;
 	unsigned int nr_open_calls = 111, i;
 	cpu_set_t cpu_set;
-	int id = trace_event__id("sys_enter_open");
+	struct thread_map *threads = thread_map__new(-1, getpid(), UINT_MAX);
 
-	if (id < 0) {
-		pr_debug("is debugfs mounted on /sys/kernel/debug?\n");
-		return -1;
-	}
-
-	threads = thread_map__new(-1, getpid(), UINT_MAX);
 	if (threads == NULL) {
 		pr_debug("thread_map__new\n");
 		return -1;
@@ -32,15 +24,11 @@ int test__open_syscall_event_on_all_cpus(void)
 		goto out_thread_map_delete;
 	}
 
-
 	CPU_ZERO(&cpu_set);
 
-	memset(&attr, 0, sizeof(attr));
-	attr.type = PERF_TYPE_TRACEPOINT;
-	attr.config = id;
-	evsel = perf_evsel__new(&attr, 0);
+	evsel = perf_evsel__newtp("syscalls", "sys_enter_open", 0);
 	if (evsel == NULL) {
-		pr_debug("perf_evsel__new\n");
+		pr_debug("is debugfs mounted on /sys/kernel/debug?\n");
 		goto out_thread_map_delete;
 	}
 

tools/perf/tests/open-syscall.c

@@ -6,29 +6,18 @@
 int test__open_syscall_event(void)
 {
 	int err = -1, fd;
-	struct thread_map *threads;
 	struct perf_evsel *evsel;
-	struct perf_event_attr attr;
 	unsigned int nr_open_calls = 111, i;
-	int id = trace_event__id("sys_enter_open");
+	struct thread_map *threads = thread_map__new(-1, getpid(), UINT_MAX);
 
-	if (id < 0) {
-		pr_debug("is debugfs mounted on /sys/kernel/debug?\n");
-		return -1;
-	}
-
-	threads = thread_map__new(-1, getpid(), UINT_MAX);
 	if (threads == NULL) {
 		pr_debug("thread_map__new\n");
 		return -1;
 	}
 
-	memset(&attr, 0, sizeof(attr));
-	attr.type = PERF_TYPE_TRACEPOINT;
-	attr.config = id;
-	evsel = perf_evsel__new(&attr, 0);
+	evsel = perf_evsel__newtp("syscalls", "sys_enter_open", 0);
 	if (evsel == NULL) {
-		pr_debug("perf_evsel__new\n");
+		pr_debug("is debugfs mounted on /sys/kernel/debug?\n");
 		goto out_thread_map_delete;
 	}
 

tools/perf/tests/tests.h

@@ -16,7 +16,4 @@ int test__attr(void);
 int test__dso_data(void);
 int test__parse_events(void);
 
-/* Util */
-int trace_event__id(const char *evname);
-
 #endif /* TESTS_H */

tools/perf/tests/util.c

-#include <stdio.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include "tests.h"
-#include "debugfs.h"
-
-int trace_event__id(const char *evname)
-{
-	char *filename;
-	int err = -1, fd;
-
-	if (asprintf(&filename,
-		     "%s/syscalls/%s/id",
-		     tracing_events_path, evname) < 0)
-		return -1;
-
-	fd = open(filename, O_RDONLY);
-	if (fd >= 0) {
-		char id[16];
-		if (read(fd, id, sizeof(id)) > 0)
-			err = atoi(id);
-		close(fd);
-	}
-
-	free(filename);
-	return err;
-}