nfs: disintegrate UAPI for nfs

This is to complete part of the Userspace API (UAPI) disintegration for which
the preparatory patches were pulled recently.  After these patches, userspace
headers will be segregated into:

        include/uapi/linux/.../foo.h

for the userspace interface stuff, and:

        include/linux/.../foo.h

for the strictly kernel internal stuff.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 140 insertions, 89 deletions

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 1e60ab70b2b..1be843aa154 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -14,6 +14,7 @@
 #include "util/util.h"
 #include "util/evlist.h"
 #include "util/evsel.h"
+#include "util/sort.h"
 #include <linux/bitmap.h>
 
 static char const		*script_name;
@@ -28,11 +29,6 @@ static bool			system_wide;
 static const char		*cpu_list;
 static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
 
-struct perf_script {
-	struct perf_tool    tool;
-	struct perf_session *session;
-};
-
 enum perf_output_field {
 	PERF_OUTPUT_COMM            = 1U << 0,
 	PERF_OUTPUT_TID             = 1U << 1,
@@ -262,14 +258,11 @@ static int perf_session__check_output_opt(struct perf_session *session)
 	return 0;
 }
 
-static void print_sample_start(struct pevent *pevent,
-			       struct perf_sample *sample,
+static void print_sample_start(struct perf_sample *sample,
 			       struct thread *thread,
 			       struct perf_evsel *evsel)
 {
-	int type;
 	struct perf_event_attr *attr = &evsel->attr;
-	struct event_format *event;
 	const char *evname = NULL;
 	unsigned long secs;
 	unsigned long usecs;
@@ -307,20 +300,7 @@ static void print_sample_start(struct pevent *pevent,
 	}
 
 	if (PRINT_FIELD(EVNAME)) {
-		if (attr->type == PERF_TYPE_TRACEPOINT) {
-			/*
-			 * XXX Do we really need this here?
-			 * perf_evlist__set_tracepoint_names should have done
-			 * this already
-			 */
-			type = trace_parse_common_type(pevent,
-						       sample->raw_data);
-			event = pevent_find_event(pevent, type);
-			if (event)
-				evname = event->name;
-		} else
-			evname = perf_evsel__name(evsel);
-
+		evname = perf_evsel__name(evsel);
 		printf("%s: ", evname ? evname : "[unknown]");
 	}
 }
@@ -401,7 +381,7 @@ static void print_sample_bts(union perf_event *event,
 			printf(" ");
 		else
 			printf("\n");
-		perf_event__print_ip(event, sample, machine,
+		perf_evsel__print_ip(evsel, event, sample, machine,
 				     PRINT_FIELD(SYM), PRINT_FIELD(DSO),
 				     PRINT_FIELD(SYMOFFSET));
 	}
@@ -415,19 +395,17 @@ static void print_sample_bts(union perf_event *event,
 	printf("\n");
 }
 
-static void process_event(union perf_event *event __unused,
-			  struct pevent *pevent,
-			  struct perf_sample *sample,
-			  struct perf_evsel *evsel,
-			  struct machine *machine,
-			  struct thread *thread)
+static void process_event(union perf_event *event, struct perf_sample *sample,
+			  struct perf_evsel *evsel, struct machine *machine,
+			  struct addr_location *al)
 {
 	struct perf_event_attr *attr = &evsel->attr;
+	struct thread *thread = al->thread;
 
 	if (output[attr->type].fields == 0)
 		return;
 
-	print_sample_start(pevent, sample, thread, evsel);
+	print_sample_start(sample, thread, evsel);
 
 	if (is_bts_event(attr)) {
 		print_sample_bts(event, sample, evsel, machine, thread);
@@ -435,9 +413,8 @@ static void process_event(union perf_event *event __unused,
 	}
 
 	if (PRINT_FIELD(TRACE))
-		print_trace_event(pevent, sample->cpu, sample->raw_data,
-				  sample->raw_size);
-
+		event_format__print(evsel->tp_format, sample->cpu,
+				    sample->raw_data, sample->raw_size);
 	if (PRINT_FIELD(ADDR))
 		print_sample_addr(event, sample, machine, thread, attr);
 
@@ -446,7 +423,7 @@ static void process_event(union perf_event *event __unused,
 			printf(" ");
 		else
 			printf("\n");
-		perf_event__print_ip(event, sample, machine,
+		perf_evsel__print_ip(evsel, event, sample, machine,
 				     PRINT_FIELD(SYM), PRINT_FIELD(DSO),
 				     PRINT_FIELD(SYMOFFSET));
 	}
@@ -454,9 +431,9 @@ static void process_event(union perf_event *event __unused,
 	printf("\n");
 }
 
-static int default_start_script(const char *script __unused,
-				int argc __unused,
-				const char **argv __unused)
+static int default_start_script(const char *script __maybe_unused,
+				int argc __maybe_unused,
+				const char **argv __maybe_unused)
 {
 	return 0;
 }
@@ -466,8 +443,8 @@ static int default_stop_script(void)
 	return 0;
 }
 
-static int default_generate_script(struct pevent *pevent __unused,
-				   const char *outfile __unused)
+static int default_generate_script(struct pevent *pevent __maybe_unused,
+				   const char *outfile __maybe_unused)
 {
 	return 0;
 }
@@ -498,14 +475,13 @@ static int cleanup_scripting(void)
 
 static const char *input_name;
 
-static int process_sample_event(struct perf_tool *tool __used,
+static int process_sample_event(struct perf_tool *tool __maybe_unused,
 				union perf_event *event,
 				struct perf_sample *sample,
 				struct perf_evsel *evsel,
 				struct machine *machine)
 {
 	struct addr_location al;
-	struct perf_script *scr = container_of(tool, struct perf_script, tool);
 	struct thread *thread = machine__findnew_thread(machine, event->ip.tid);
 
 	if (thread == NULL) {
@@ -537,32 +513,29 @@ static int process_sample_event(struct perf_tool *tool __used,
 	if (cpu_list && !test_bit(sample->cpu, cpu_bitmap))
 		return 0;
 
-	scripting_ops->process_event(event, scr->session->pevent,
-				     sample, evsel, machine, thread);
+	scripting_ops->process_event(event, sample, evsel, machine, &al);
 
 	evsel->hists.stats.total_period += sample->period;
 	return 0;
 }
 
-static struct perf_script perf_script = {
-	.tool = {
-		.sample		 = process_sample_event,
-		.mmap		 = perf_event__process_mmap,
-		.comm		 = perf_event__process_comm,
-		.exit		 = perf_event__process_task,
-		.fork		 = perf_event__process_task,
-		.attr		 = perf_event__process_attr,
-		.event_type	 = perf_event__process_event_type,
-		.tracing_data	 = perf_event__process_tracing_data,
-		.build_id	 = perf_event__process_build_id,
-		.ordered_samples = true,
-		.ordering_requires_timestamps = true,
-	},
+static struct perf_tool perf_script = {
+	.sample		 = process_sample_event,
+	.mmap		 = perf_event__process_mmap,
+	.comm		 = perf_event__process_comm,
+	.exit		 = perf_event__process_task,
+	.fork		 = perf_event__process_task,
+	.attr		 = perf_event__process_attr,
+	.event_type	 = perf_event__process_event_type,
+	.tracing_data	 = perf_event__process_tracing_data,
+	.build_id	 = perf_event__process_build_id,
+	.ordered_samples = true,
+	.ordering_requires_timestamps = true,
 };
 
 extern volatile int session_done;
 
-static void sig_handler(int sig __unused)
+static void sig_handler(int sig __maybe_unused)
 {
 	session_done = 1;
 }
@@ -573,7 +546,7 @@ static int __cmd_script(struct perf_session *session)
 
 	signal(SIGINT, sig_handler);
 
-	ret = perf_session__process_events(session, &perf_script.tool);
+	ret = perf_session__process_events(session, &perf_script);
 
 	if (debug_mode)
 		pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered);
@@ -672,8 +645,8 @@ static void list_available_languages(void)
 	fprintf(stderr, "\n");
 }
 
-static int parse_scriptname(const struct option *opt __used,
-			    const char *str, int unset __used)
+static int parse_scriptname(const struct option *opt __maybe_unused,
+			    const char *str, int unset __maybe_unused)
 {
 	char spec[PATH_MAX];
 	const char *script, *ext;
@@ -718,8 +691,8 @@ static int parse_scriptname(const struct option *opt __used,
 	return 0;
 }
 
-static int parse_output_fields(const struct option *opt __used,
-			    const char *arg, int unset __used)
+static int parse_output_fields(const struct option *opt __maybe_unused,
+			    const char *arg, int unset __maybe_unused)
 {
 	char *tok;
 	int i, imax = sizeof(all_output_options) / sizeof(struct output_option);
@@ -1010,8 +983,9 @@ static char *get_script_root(struct dirent *script_dirent, const char *suffix)
 	return script_root;
 }
 
-static int list_available_scripts(const struct option *opt __used,
-				  const char *s __used, int unset __used)
+static int list_available_scripts(const struct option *opt __maybe_unused,
+				  const char *s __maybe_unused,
+				  int unset __maybe_unused)
 {
 	struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
 	char scripts_path[MAXPATHLEN];
@@ -1058,6 +1032,61 @@ static int list_available_scripts(const struct option *opt __used,
 	exit(0);
 }
 
+/*
+ * Return -1 if none is found, otherwise the actual scripts number.
+ *
+ * Currently the only user of this function is the script browser, which
+ * will list all statically runnable scripts, select one, execute it and
+ * show the output in a perf browser.
+ */
+int find_scripts(char **scripts_array, char **scripts_path_array)
+{
+	struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
+	char scripts_path[MAXPATHLEN];
+	DIR *scripts_dir, *lang_dir;
+	char lang_path[MAXPATHLEN];
+	char *temp;
+	int i = 0;
+
+	snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
+
+	scripts_dir = opendir(scripts_path);
+	if (!scripts_dir)
+		return -1;
+
+	for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
+		snprintf(lang_path, MAXPATHLEN, "%s/%s", scripts_path,
+			 lang_dirent.d_name);
+#ifdef NO_LIBPERL
+		if (strstr(lang_path, "perl"))
+			continue;
+#endif
+#ifdef NO_LIBPYTHON
+		if (strstr(lang_path, "python"))
+			continue;
+#endif
+
+		lang_dir = opendir(lang_path);
+		if (!lang_dir)
+			continue;
+
+		for_each_script(lang_path, lang_dir, script_dirent, script_next) {
+			/* Skip those real time scripts: xxxtop.p[yl] */
+			if (strstr(script_dirent.d_name, "top."))
+				continue;
+			sprintf(scripts_path_array[i], "%s/%s", lang_path,
+				script_dirent.d_name);
+			temp = strchr(script_dirent.d_name, '.');
+			snprintf(scripts_array[i],
+				(temp - script_dirent.d_name) + 1,
+				"%s", script_dirent.d_name);
+			i++;
+		}
+	}
+
+	return i;
+}
+
 static char *get_script_path(const char *script_root, const char *suffix)
 {
 	struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
@@ -1170,6 +1199,8 @@ static const struct option options[] = {
 		     parse_output_fields),
 	OPT_BOOLEAN('a', "all-cpus", &system_wide,
 		     "system-wide collection from all CPUs"),
+	OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
+		   "only consider these symbols"),
 	OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
 	OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
 		   "only display events for these comms"),
@@ -1181,21 +1212,26 @@ static const struct option options[] = {
 	OPT_END()
 };
 
-static bool have_cmd(int argc, const char **argv)
+static int have_cmd(int argc, const char **argv)
 {
 	char **__argv = malloc(sizeof(const char *) * argc);
 
-	if (!__argv)
-		die("malloc");
+	if (!__argv) {
+		pr_err("malloc failed\n");
+		return -1;
+	}
+
 	memcpy(__argv, argv, sizeof(const char *) * argc);
 	argc = parse_options(argc, (const char **)__argv, record_options,
 			     NULL, PARSE_OPT_STOP_AT_NON_OPTION);
 	free(__argv);
 
-	return argc != 0;
+	system_wide = (argc == 0);
+
+	return 0;
 }
 
-int cmd_script(int argc, const char **argv, const char *prefix __used)
+int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
 {
 	char *rec_script_path = NULL;
 	char *rep_script_path = NULL;
@@ -1259,13 +1295,13 @@ int cmd_script(int argc, const char **argv, const char *prefix __used)
 
 		if (pipe(live_pipe) < 0) {
 			perror("failed to create pipe");
-			exit(-1);
+			return -1;
 		}
 
 		pid = fork();
 		if (pid < 0) {
 			perror("failed to fork");
-			exit(-1);
+			return -1;
 		}
 
 		if (!pid) {
@@ -1277,13 +1313,18 @@ int cmd_script(int argc, const char **argv, const char *prefix __used)
 			if (is_top_script(argv[0])) {
 				system_wide = true;
 			} else if (!system_wide) {
-				system_wide = !have_cmd(argc - rep_args,
-							&argv[rep_args]);
+				if (have_cmd(argc - rep_args, &argv[rep_args]) != 0) {
+					err = -1;
+					goto out;
+				}
 			}
 
 			__argv = malloc((argc + 6) * sizeof(const char *));
-			if (!__argv)
-				die("malloc");
+			if (!__argv) {
+				pr_err("malloc failed\n");
+				err = -ENOMEM;
+				goto out;
+			}
 
 			__argv[j++] = "/bin/sh";
 			__argv[j++] = rec_script_path;
@@ -1305,8 +1346,12 @@ int cmd_script(int argc, const char **argv, const char *prefix __used)
 		close(live_pipe[1]);
 
 		__argv = malloc((argc + 4) * sizeof(const char *));
-		if (!__argv)
-			die("malloc");
+		if (!__argv) {
+			pr_err("malloc failed\n");
+			err = -ENOMEM;
+			goto out;
+		}
+
 		j = 0;
 		__argv[j++] = "/bin/sh";
 		__argv[j++] = rep_script_path;
@@ -1331,12 +1376,20 @@ int cmd_script(int argc, const char **argv, const char *prefix __used)
 
 		if (!rec_script_path)
 			system_wide = false;
-		else if (!system_wide)
-			system_wide = !have_cmd(argc - 1, &argv[1]);
+		else if (!system_wide) {
+			if (have_cmd(argc - 1, &argv[1]) != 0) {
+				err = -1;
+				goto out;
+			}
+		}
 
 		__argv = malloc((argc + 2) * sizeof(const char *));
-		if (!__argv)
-			die("malloc");
+		if (!__argv) {
+			pr_err("malloc failed\n");
+			err = -ENOMEM;
+			goto out;
+		}
+
 		__argv[j++] = "/bin/sh";
 		__argv[j++] = script_path;
 		if (system_wide)
@@ -1356,12 +1409,10 @@ int cmd_script(int argc, const char **argv, const char *prefix __used)
 		setup_pager();
 
 	session = perf_session__new(input_name, O_RDONLY, 0, false,
-				    &perf_script.tool);
+				    &perf_script);
 	if (session == NULL)
 		return -ENOMEM;
 
-	perf_script.session = session;
-
 	if (cpu_list) {
 		if (perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap))
 			return -1;
@@ -1387,18 +1438,18 @@ int cmd_script(int argc, const char **argv, const char *prefix __used)
 		input = open(session->filename, O_RDONLY);	/* input_name */
 		if (input < 0) {
 			perror("failed to open file");
-			exit(-1);
+			return -1;
 		}
 
 		err = fstat(input, &perf_stat);
 		if (err < 0) {
 			perror("failed to stat file");
-			exit(-1);
+			return -1;
 		}
 
 		if (!perf_stat.st_size) {
 			fprintf(stderr, "zero-sized file, nothing to do!\n");
-			exit(0);
+			return 0;
 		}
 
 		scripting_ops = script_spec__lookup(generate_script_lang);