1 files changed, 321 insertions, 72 deletions

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index abb914aa7be6..574a215e800b 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -7,11 +7,14 @@
 #include "util/header.h"
 #include "util/exec_cmd.h"
 #include "util/trace-event.h"
+#include "util/session.h"
 
 static char const		*script_name;
 static char const		*generate_script_lang;
 
-static int default_start_script(const char *script __attribute((unused)))
+static int default_start_script(const char *script __unused,
+				int argc __unused,
+				const char **argv __unused)
 {
 	return 0;
 }
@@ -21,7 +24,7 @@ static int default_stop_script(void)
 	return 0;
 }
 
-static int default_generate_script(const char *outfile __attribute ((unused)))
+static int default_generate_script(const char *outfile __unused)
 {
 	return 0;
 }
@@ -56,77 +59,53 @@ static int cleanup_scripting(void)
 #include "util/debug.h"
 
 #include "util/trace-event.h"
-#include "util/data_map.h"
 #include "util/exec_cmd.h"
 
 static char const		*input_name = "perf.data";
 
-static struct perf_header	*header;
-static u64			sample_type;
-
-static int process_sample_event(event_t *event)
+static int process_sample_event(event_t *event, struct perf_session *session)
 {
-	u64 ip = event->ip.ip;
-	u64 timestamp = -1;
-	u32 cpu = -1;
-	u64 period = 1;
-	void *more_data = event->ip.__more_data;
-	struct thread *thread = threads__findnew(event->ip.pid);
-
-	if (sample_type & PERF_SAMPLE_TIME) {
-		timestamp = *(u64 *)more_data;
-		more_data += sizeof(u64);
-	}
+	struct sample_data data;
+	struct thread *thread;
 
-	if (sample_type & PERF_SAMPLE_CPU) {
-		cpu = *(u32 *)more_data;
-		more_data += sizeof(u32);
-		more_data += sizeof(u32); /* reserved */
-	}
+	memset(&data, 0, sizeof(data));
+	data.time = -1;
+	data.cpu = -1;
+	data.period = 1;
 
-	if (sample_type & PERF_SAMPLE_PERIOD) {
-		period = *(u64 *)more_data;
-		more_data += sizeof(u64);
-	}
+	event__parse_sample(event, session->sample_type, &data);
 
 	dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
 		event->header.misc,
-		event->ip.pid, event->ip.tid,
-		(void *)(long)ip,
-		(long long)period);
+		data.pid, data.tid,
+		(void *)(long)data.ip,
+		(long long)data.period);
 
+	thread = perf_session__findnew(session, event->ip.pid);
 	if (thread == NULL) {
 		pr_debug("problem processing %d event, skipping it.\n",
 			 event->header.type);
 		return -1;
 	}
 
-	dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
-
-	if (sample_type & PERF_SAMPLE_RAW) {
-		struct {
-			u32 size;
-			char data[0];
-		} *raw = more_data;
-
+	if (session->sample_type & PERF_SAMPLE_RAW) {
 		/*
 		 * FIXME: better resolve from pid from the struct trace_entry
 		 * field, although it should be the same than this perf
 		 * event pid
 		 */
-		scripting_ops->process_event(cpu, raw->data, raw->size,
-					     timestamp, thread->comm);
+		scripting_ops->process_event(data.cpu, data.raw_data,
+					     data.raw_size,
+					     data.time, thread->comm);
 	}
-	event__stats.total += period;
 
+	session->events_stats.total += data.period;
 	return 0;
 }
 
-static int sample_type_check(u64 type)
+static int sample_type_check(struct perf_session *session)
 {
-	sample_type = type;
-
-	if (!(sample_type & PERF_SAMPLE_RAW)) {
+	if (!(session->sample_type & PERF_SAMPLE_RAW)) {
 		fprintf(stderr,
 			"No trace sample to read. Did you call perf record "
 			"without -R?");
@@ -136,19 +115,15 @@ static int sample_type_check(u64 type)
 	return 0;
 }
 
-static struct perf_file_handler file_handler = {
+static struct perf_event_ops event_ops = {
 	.process_sample_event	= process_sample_event,
 	.process_comm_event	= event__process_comm,
 	.sample_type_check	= sample_type_check,
 };
 
-static int __cmd_trace(void)
+static int __cmd_trace(struct perf_session *session)
 {
-	register_idle_thread();
-	register_perf_file_handler(&file_handler);
-
-	return mmap_dispatch_perf_file(&header, input_name,
-				       0, 0, &event__cwdlen, &event__cwd);
+	return perf_session__process_events(session, &event_ops);
 }
 
 struct script_spec {
@@ -299,7 +274,245 @@ static int parse_scriptname(const struct option *opt __used,
 	return 0;
 }
 
-static const char * const annotate_usage[] = {
+#define for_each_lang(scripts_dir, lang_dirent, lang_next)		\
+	while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) &&	\
+	       lang_next)						\
+		if (lang_dirent.d_type == DT_DIR &&			\
+		    (strcmp(lang_dirent.d_name, ".")) &&		\
+		    (strcmp(lang_dirent.d_name, "..")))
+
+#define for_each_script(lang_dir, script_dirent, script_next)		\
+	while (!readdir_r(lang_dir, &script_dirent, &script_next) &&	\
+	       script_next)						\
+		if (script_dirent.d_type != DT_DIR)
+
+
+#define RECORD_SUFFIX			"-record"
+#define REPORT_SUFFIX			"-report"
+
+struct script_desc {
+	struct list_head	node;
+	char			*name;
+	char			*half_liner;
+	char			*args;
+};
+
+LIST_HEAD(script_descs);
+
+static struct script_desc *script_desc__new(const char *name)
+{
+	struct script_desc *s = zalloc(sizeof(*s));
+
+	if (s != NULL)
+		s->name = strdup(name);
+
+	return s;
+}
+
+static void script_desc__delete(struct script_desc *s)
+{
+	free(s->name);
+	free(s);
+}
+
+static void script_desc__add(struct script_desc *s)
+{
+	list_add_tail(&s->node, &script_descs);
+}
+
+static struct script_desc *script_desc__find(const char *name)
+{
+	struct script_desc *s;
+
+	list_for_each_entry(s, &script_descs, node)
+		if (strcasecmp(s->name, name) == 0)
+			return s;
+	return NULL;
+}
+
+static struct script_desc *script_desc__findnew(const char *name)
+{
+	struct script_desc *s = script_desc__find(name);
+
+	if (s)
+		return s;
+
+	s = script_desc__new(name);
+	if (!s)
+		goto out_delete_desc;
+
+	script_desc__add(s);
+
+	return s;
+
+out_delete_desc:
+	script_desc__delete(s);
+
+	return NULL;
+}
+
+static char *ends_with(char *str, const char *suffix)
+{
+	size_t suffix_len = strlen(suffix);
+	char *p = str;
+
+	if (strlen(str) > suffix_len) {
+		p = str + strlen(str) - suffix_len;
+		if (!strncmp(p, suffix, suffix_len))
+			return p;
+	}
+
+	return NULL;
+}
+
+static char *ltrim(char *str)
+{
+	int len = strlen(str);
+
+	while (len && isspace(*str)) {
+		len--;
+		str++;
+	}
+
+	return str;
+}
+
+static int read_script_info(struct script_desc *desc, const char *filename)
+{
+	char line[BUFSIZ], *p;
+	FILE *fp;
+
+	fp = fopen(filename, "r");
+	if (!fp)
+		return -1;
+
+	while (fgets(line, sizeof(line), fp)) {
+		p = ltrim(line);
+		if (strlen(p) == 0)
+			continue;
+		if (*p != '#')
+			continue;
+		p++;
+		if (strlen(p) && *p == '!')
+			continue;
+
+		p = ltrim(p);
+		if (strlen(p) && p[strlen(p) - 1] == '\n')
+			p[strlen(p) - 1] = '\0';
+
+		if (!strncmp(p, "description:", strlen("description:"))) {
+			p += strlen("description:");
+			desc->half_liner = strdup(ltrim(p));
+			continue;
+		}
+
+		if (!strncmp(p, "args:", strlen("args:"))) {
+			p += strlen("args:");
+			desc->args = strdup(ltrim(p));
+			continue;
+		}
+	}
+
+	fclose(fp);
+
+	return 0;
+}
+
+static int list_available_scripts(const struct option *opt __used,
+				  const char *s __used, int unset __used)
+{
+	struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
+	char scripts_path[MAXPATHLEN];
+	DIR *scripts_dir, *lang_dir;
+	char script_path[MAXPATHLEN];
+	char lang_path[MAXPATHLEN];
+	struct script_desc *desc;
+	char first_half[BUFSIZ];
+	char *script_root;
+	char *str;
+
+	snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
+
+	scripts_dir = opendir(scripts_path);
+	if (!scripts_dir)
+		return -1;
+
+	for_each_lang(scripts_dir, lang_dirent, lang_next) {
+		snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
+			 lang_dirent.d_name);
+		lang_dir = opendir(lang_path);
+		if (!lang_dir)
+			continue;
+
+		for_each_script(lang_dir, script_dirent, script_next) {
+			script_root = strdup(script_dirent.d_name);
+			str = ends_with(script_root, REPORT_SUFFIX);
+			if (str) {
+				*str = '\0';
+				desc = script_desc__findnew(script_root);
+				snprintf(script_path, MAXPATHLEN, "%s/%s",
+					 lang_path, script_dirent.d_name);
+				read_script_info(desc, script_path);
+			}
+			free(script_root);
+		}
+	}
+
+	fprintf(stdout, "List of available trace scripts:\n");
+	list_for_each_entry(desc, &script_descs, node) {
+		sprintf(first_half, "%s %s", desc->name,
+			desc->args ? desc->args : "");
+		fprintf(stdout, "  %-36s %s\n", first_half,
+			desc->half_liner ? desc->half_liner : "");
+	}
+
+	exit(0);
+}
+
+static char *get_script_path(const char *script_root, const char *suffix)
+{
+	struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
+	char scripts_path[MAXPATHLEN];
+	char script_path[MAXPATHLEN];
+	DIR *scripts_dir, *lang_dir;
+	char lang_path[MAXPATHLEN];
+	char *str, *__script_root;
+	char *path = NULL;
+
+	snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
+
+	scripts_dir = opendir(scripts_path);
+	if (!scripts_dir)
+		return NULL;
+
+	for_each_lang(scripts_dir, lang_dirent, lang_next) {
+		snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
+			 lang_dirent.d_name);
+		lang_dir = opendir(lang_path);
+		if (!lang_dir)
+			continue;
+
+		for_each_script(lang_dir, script_dirent, script_next) {
+			__script_root = strdup(script_dirent.d_name);
+			str = ends_with(__script_root, suffix);
+			if (str) {
+				*str = '\0';
+				if (strcmp(__script_root, script_root))
+					continue;
+				snprintf(script_path, MAXPATHLEN, "%s/%s",
+					 lang_path, script_dirent.d_name);
+				path = strdup(script_path);
+				free(__script_root);
+				break;
+			}
+			free(__script_root);
+		}
+	}
+
+	return path;
+}
+
+static const char * const trace_usage[] = {
 	"perf trace [<options>] <command>",
 	NULL
 };
@@ -309,8 +522,10 @@ static const struct option options[] = {
 		    "dump raw trace in ASCII"),
 	OPT_BOOLEAN('v', "verbose", &verbose,
 		    "be more verbose (show symbol address, etc)"),
-	OPT_BOOLEAN('l', "latency", &latency_format,
+	OPT_BOOLEAN('L', "Latency", &latency_format,
 		    "show latency attributes (irqs/preemption disabled, etc)"),
+	OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts",
+			   list_available_scripts),
 	OPT_CALLBACK('s', "script", NULL, "name",
 		     "script file name (lang:script name, script name, or *)",
 		     parse_scriptname),
@@ -322,24 +537,61 @@ static const struct option options[] = {
 
 int cmd_trace(int argc, const char **argv, const char *prefix __used)
 {
-	int err;
+	struct perf_session *session;
+	const char *suffix = NULL;
+	const char **__argv;
+	char *script_path;
+	int i, err;
+
+	if (argc >= 2 && strncmp(argv[1], "rec", strlen("rec")) == 0) {
+		if (argc < 3) {
+			fprintf(stderr,
+				"Please specify a record script\n");
+			return -1;
+		}
+		suffix = RECORD_SUFFIX;
+	}
+
+	if (argc >= 2 && strncmp(argv[1], "rep", strlen("rep")) == 0) {
+		if (argc < 3) {
+			fprintf(stderr,
+				"Please specify a report script\n");
+			return -1;
+		}
+		suffix = REPORT_SUFFIX;
+	}
 
-	symbol__init(0);
+	if (suffix) {
+		script_path = get_script_path(argv[2], suffix);
+		if (!script_path) {
+			fprintf(stderr, "script not found\n");
+			return -1;
+		}
 
-	setup_scripting();
+		__argv = malloc((argc + 1) * sizeof(const char *));
+		__argv[0] = "/bin/sh";
+		__argv[1] = script_path;
+		for (i = 3; i < argc; i++)
+			__argv[i - 1] = argv[i];
+		__argv[argc - 1] = NULL;
 
-	argc = parse_options(argc, argv, options, annotate_usage, 0);
-	if (argc) {
-		/*
-		 * Special case: if there's an argument left then assume tha
-		 * it's a symbol filter:
-		 */
-		if (argc > 1)
-			usage_with_options(annotate_usage, options);
+		execvp("/bin/sh", (char **)__argv);
+		exit(-1);
 	}
 
+	setup_scripting();
+
+	argc = parse_options(argc, argv, options, trace_usage,
+			     PARSE_OPT_STOP_AT_NON_OPTION);
+
+	if (symbol__init() < 0)
+		return -1;
 	setup_pager();
 
+	session = perf_session__new(input_name, O_RDONLY, 0);
+	if (session == NULL)
+		return -ENOMEM;
+
 	if (generate_script_lang) {
 		struct stat perf_stat;
 
@@ -366,23 +618,20 @@ int cmd_trace(int argc, const char **argv, const char *prefix __used)
 			return -1;
 		}
 
-		header = perf_header__new();
-		if (header == NULL)
-			return -1;
-
-		perf_header__read(header, input);
+		perf_header__read(&session->header, input);
 		err = scripting_ops->generate_script("perf-trace");
 		goto out;
 	}
 
 	if (script_name) {
-		err = scripting_ops->start_script(script_name);
+		err = scripting_ops->start_script(script_name, argc, argv);
 		if (err)
 			goto out;
 	}
 
-	err = __cmd_trace();
+	err = __cmd_trace(session);
 
+	perf_session__delete(session);
 	cleanup_scripting();
 out:
 	return err;