1 files changed, 317 insertions, 472 deletions

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index e9231659754..378b85b731a 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -5,8 +5,6 @@
  * (or a CPU, or a PID) into the perf.data output file - for
  * later analysis via perf report.
  */
-#define _FILE_OFFSET_BITS 64
-
 #include "builtin.h"
 
 #include "perf.h"
@@ -26,58 +24,35 @@
 #include "util/symbol.h"
 #include "util/cpumap.h"
 #include "util/thread_map.h"
+#include "util/data.h"
 
 #include <unistd.h>
 #include <sched.h>
 #include <sys/mman.h>
 
-enum write_mode_t {
-	WRITE_FORCE,
-	WRITE_APPEND
-};
 
-struct perf_record {
+struct record {
 	struct perf_tool	tool;
-	struct perf_record_opts	opts;
+	struct record_opts	opts;
 	u64			bytes_written;
-	const char		*output_name;
+	struct perf_data_file	file;
 	struct perf_evlist	*evlist;
 	struct perf_session	*session;
 	const char		*progname;
-	int			output;
-	unsigned int		page_size;
 	int			realtime_prio;
-	enum write_mode_t	write_mode;
 	bool			no_buildid;
 	bool			no_buildid_cache;
-	bool			force;
-	bool			file_new;
-	bool			append_file;
 	long			samples;
-	off_t			post_processing_offset;
 };
 
-static void advance_output(struct perf_record *rec, size_t size)
+static int record__write(struct record *rec, void *bf, size_t size)
 {
-	rec->bytes_written += size;
-}
-
-static int write_output(struct perf_record *rec, void *buf, size_t size)
-{
-	while (size) {
-		int ret = write(rec->output, buf, size);
-
-		if (ret < 0) {
-			pr_err("failed to write\n");
-			return -1;
-		}
-
-		size -= ret;
-		buf += ret;
-
-		rec->bytes_written += ret;
+	if (perf_data_file__write(rec->session->file, bf, size) < 0) {
+		pr_err("failed to write perf data, error: %m\n");
+		return -1;
 	}
 
+	rec->bytes_written += size;
 	return 0;
 }
 
@@ -86,19 +61,15 @@ static int process_synthesized_event(struct perf_tool *tool,
 				     struct perf_sample *sample __maybe_unused,
 				     struct machine *machine __maybe_unused)
 {
-	struct perf_record *rec = container_of(tool, struct perf_record, tool);
-	if (write_output(rec, event, event->header.size) < 0)
-		return -1;
-
-	return 0;
+	struct record *rec = container_of(tool, struct record, tool);
+	return record__write(rec, event, event->header.size);
 }
 
-static int perf_record__mmap_read(struct perf_record *rec,
-				   struct perf_mmap *md)
+static int record__mmap_read(struct record *rec, struct perf_mmap *md)
 {
 	unsigned int head = perf_mmap__read_head(md);
 	unsigned int old = md->prev;
-	unsigned char *data = md->base + rec->page_size;
+	unsigned char *data = md->base + page_size;
 	unsigned long size;
 	void *buf;
 	int rc = 0;
@@ -115,7 +86,7 @@ static int perf_record__mmap_read(struct perf_record *rec,
 		size = md->mask + 1 - (old & md->mask);
 		old += size;
 
-		if (write_output(rec, buf, size) < 0) {
+		if (record__write(rec, buf, size) < 0) {
 			rc = -1;
 			goto out;
 		}
@@ -125,7 +96,7 @@ static int perf_record__mmap_read(struct perf_record *rec,
 	size = head - old;
 	old += size;
 
-	if (write_output(rec, buf, size) < 0) {
+	if (record__write(rec, buf, size) < 0) {
 		rc = -1;
 		goto out;
 	}
@@ -145,168 +116,45 @@ static void sig_handler(int sig)
 {
 	if (sig == SIGCHLD)
 		child_finished = 1;
+	else
+		signr = sig;
 
 	done = 1;
-	signr = sig;
 }
 
-static void perf_record__sig_exit(int exit_status __maybe_unused, void *arg)
+static void record__sig_exit(void)
 {
-	struct perf_record *rec = arg;
-	int status;
-
-	if (rec->evlist->workload.pid > 0) {
-		if (!child_finished)
-			kill(rec->evlist->workload.pid, SIGTERM);
-
-		wait(&status);
-		if (WIFSIGNALED(status))
-			psignal(WTERMSIG(status), rec->progname);
-	}
-
-	if (signr == -1 || signr == SIGUSR1)
+	if (signr == -1)
 		return;
 
 	signal(signr, SIG_DFL);
-	kill(getpid(), signr);
+	raise(signr);
 }
 
-static bool perf_evlist__equal(struct perf_evlist *evlist,
-			       struct perf_evlist *other)
-{
-	struct perf_evsel *pos, *pair;
-
-	if (evlist->nr_entries != other->nr_entries)
-		return false;
-
-	pair = perf_evlist__first(other);
-
-	list_for_each_entry(pos, &evlist->entries, node) {
-		if (memcmp(&pos->attr, &pair->attr, sizeof(pos->attr) != 0))
-			return false;
-		pair = perf_evsel__next(pair);
-	}
-
-	return true;
-}
-
-static int perf_record__open(struct perf_record *rec)
+static int record__open(struct record *rec)
 {
+	char msg[512];
 	struct perf_evsel *pos;
 	struct perf_evlist *evlist = rec->evlist;
 	struct perf_session *session = rec->session;
-	struct perf_record_opts *opts = &rec->opts;
+	struct record_opts *opts = &rec->opts;
 	int rc = 0;
 
-	perf_evlist__config_attrs(evlist, opts);
-
-	if (opts->group)
-		perf_evlist__set_leader(evlist);
-
-	list_for_each_entry(pos, &evlist->entries, node) {
-		struct perf_event_attr *attr = &pos->attr;
-		/*
-		 * Check if parse_single_tracepoint_event has already asked for
-		 * PERF_SAMPLE_TIME.
-		 *
-		 * XXX this is kludgy but short term fix for problems introduced by
-		 * eac23d1c that broke 'perf script' by having different sample_types
-		 * when using multiple tracepoint events when we use a perf binary
-		 * that tries to use sample_id_all on an older kernel.
-		 *
-		 * We need to move counter creation to perf_session, support
-		 * different sample_types, etc.
-		 */
-		bool time_needed = attr->sample_type & PERF_SAMPLE_TIME;
+	perf_evlist__config(evlist, opts);
 
-fallback_missing_features:
-		if (opts->exclude_guest_missing)
-			attr->exclude_guest = attr->exclude_host = 0;
-retry_sample_id:
-		attr->sample_id_all = opts->sample_id_all_missing ? 0 : 1;
+	evlist__for_each(evlist, pos) {
 try_again:
 		if (perf_evsel__open(pos, evlist->cpus, evlist->threads) < 0) {
-			int err = errno;
-
-			if (err == EPERM || err == EACCES) {
-				ui__error_paranoid();
-				rc = -err;
-				goto out;
-			} else if (err ==  ENODEV && opts->target.cpu_list) {
-				pr_err("No such device - did you specify"
-				       " an out-of-range profile CPU?\n");
-				rc = -err;
-				goto out;
-			} else if (err == EINVAL) {
-				if (!opts->exclude_guest_missing &&
-				    (attr->exclude_guest || attr->exclude_host)) {
-					pr_debug("Old kernel, cannot exclude "
-						 "guest or host samples.\n");
-					opts->exclude_guest_missing = true;
-					goto fallback_missing_features;
-				} else if (!opts->sample_id_all_missing) {
-					/*
-					 * Old kernel, no attr->sample_id_type_all field
-					 */
-					opts->sample_id_all_missing = true;
-					if (!opts->sample_time && !opts->raw_samples && !time_needed)
-						attr->sample_type &= ~PERF_SAMPLE_TIME;
-
-					goto retry_sample_id;
-				}
-			}
-
-			/*
-			 * If it's cycles then fall back to hrtimer
-			 * based cpu-clock-tick sw counter, which
-			 * is always available even if no PMU support.
-			 *
-			 * PPC returns ENXIO until 2.6.37 (behavior changed
-			 * with commit b0a873e).
-			 */
-			if ((err == ENOENT || err == ENXIO)
-					&& attr->type == PERF_TYPE_HARDWARE
-					&& attr->config == PERF_COUNT_HW_CPU_CYCLES) {
-
+			if (perf_evsel__fallback(pos, errno, msg, sizeof(msg))) {
 				if (verbose)
-					ui__warning("The cycles event is not supported, "
-						    "trying to fall back to cpu-clock-ticks\n");
-				attr->type = PERF_TYPE_SOFTWARE;
-				attr->config = PERF_COUNT_SW_CPU_CLOCK;
-				if (pos->name) {
-					free(pos->name);
-					pos->name = NULL;
-				}
+					ui__warning("%s\n", msg);
 				goto try_again;
 			}
 
-			if (err == ENOENT) {
-				ui__error("The %s event is not supported.\n",
-					  perf_evsel__name(pos));
-				rc = -err;
-				goto out;
-			}
-
-			printf("\n");
-			error("sys_perf_event_open() syscall returned with %d "
-			      "(%s) for event %s. /bin/dmesg may provide "
-			      "additional information.\n",
-			      err, strerror(err), perf_evsel__name(pos));
-
-#if defined(__i386__) || defined(__x86_64__)
-			if (attr->type == PERF_TYPE_HARDWARE &&
-			    err == EOPNOTSUPP) {
-				pr_err("No hardware sampling interrupt available."
-				       " No APIC? If so then you can boot the kernel"
-				       " with the \"lapic\" boot parameter to"
-				       " force-enable it.\n");
-				rc = -err;
-				goto out;
-			}
-#endif
-
-			pr_err("No CONFIG_PERF_EVENTS=y kernel support configured?\n");
-			rc = -err;
+			rc = -errno;
+			perf_evsel__open_strerror(pos, &opts->target,
+						  errno, msg, sizeof(msg));
+			ui__error("%s\n", msg);
 			goto out;
 		}
 	}
@@ -324,11 +172,8 @@ try_again:
 			       "Consider increasing "
 			       "/proc/sys/kernel/perf_event_mlock_kb,\n"
 			       "or try again with a smaller value of -m/--mmap_pages.\n"
-			       "(current value: %d)\n", opts->mmap_pages);
+			       "(current value: %u)\n", opts->mmap_pages);
 			rc = -errno;
-		} else if (!is_power_of_2(opts->mmap_pages)) {
-			pr_err("--mmap_pages/-m value must be a power of two.");
-			rc = -EINVAL;
 		} else {
 			pr_err("failed to mmap with %d (%s)\n", errno, strerror(errno));
 			rc = -errno;
@@ -336,62 +181,31 @@ try_again:
 		goto out;
 	}
 
-	if (rec->file_new)
-		session->evlist = evlist;
-	else {
-		if (!perf_evlist__equal(session->evlist, evlist)) {
-			fprintf(stderr, "incompatible append\n");
-			rc = -1;
-			goto out;
-		}
- 	}
-
+	session->evlist = evlist;
 	perf_session__set_id_hdr_size(session);
 out:
 	return rc;
 }
 
-static int process_buildids(struct perf_record *rec)
+static int process_buildids(struct record *rec)
 {
-	u64 size = lseek(rec->output, 0, SEEK_CUR);
+	struct perf_data_file *file  = &rec->file;
+	struct perf_session *session = rec->session;
+	u64 start = session->header.data_offset;
 
+	u64 size = lseek(file->fd, 0, SEEK_CUR);
 	if (size == 0)
 		return 0;
 
-	rec->session->fd = rec->output;
-	return __perf_session__process_events(rec->session, rec->post_processing_offset,
-					      size - rec->post_processing_offset,
+	return __perf_session__process_events(session, start,
+					      size - start,
 					      size, &build_id__mark_dso_hit_ops);
 }
 
-static void perf_record__exit(int status, void *arg)
-{
-	struct perf_record *rec = arg;
-
-	if (status != 0)
-		return;
-
-	if (!rec->opts.pipe_output) {
-		rec->session->header.data_size += rec->bytes_written;
-
-		if (!rec->no_buildid)
-			process_buildids(rec);
-		perf_session__write_header(rec->session, rec->evlist,
-					   rec->output, true);
-		perf_session__delete(rec->session);
-		perf_evlist__delete(rec->evlist);
-		symbol__exit();
-	}
-}
-
 static void perf_event__synthesize_guest_os(struct machine *machine, void *data)
 {
 	int err;
 	struct perf_tool *tool = data;
-
-	if (machine__is_host(machine))
-		return;
-
 	/*
 	 *As for guest kernel when processing subcommand record&report,
 	 *we arrange module mmap prior to guest kernel mmap and trigger
@@ -411,10 +225,7 @@ static void perf_event__synthesize_guest_os(struct machine *machine, void *data)
 	 * have no _text sometimes.
 	 */
 	err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event,
-						 machine, "_text");
-	if (err < 0)
-		err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event,
-							 machine, "_stext");
+						 machine);
 	if (err < 0)
 		pr_err("Couldn't record guest kernel [%d]'s reference"
 		       " relocation symbol.\n", machine->pid);
@@ -425,14 +236,14 @@ static struct perf_event_header finished_round_event = {
 	.type = PERF_RECORD_FINISHED_ROUND,
 };
 
-static int perf_record__mmap_read_all(struct perf_record *rec)
+static int record__mmap_read_all(struct record *rec)
 {
 	int i;
 	int rc = 0;
 
 	for (i = 0; i < rec->evlist->nr_mmaps; i++) {
 		if (rec->evlist->mmap[i].base) {
-			if (perf_record__mmap_read(rec, &rec->evlist->mmap[i]) != 0) {
+			if (record__mmap_read(rec, &rec->evlist->mmap[i]) != 0) {
 				rc = -1;
 				goto out;
 			}
@@ -440,129 +251,104 @@ static int perf_record__mmap_read_all(struct perf_record *rec)
 	}
 
 	if (perf_header__has_feat(&rec->session->header, HEADER_TRACING_DATA))
-		rc = write_output(rec, &finished_round_event,
-				  sizeof(finished_round_event));
+		rc = record__write(rec, &finished_round_event, sizeof(finished_round_event));
 
 out:
 	return rc;
 }
 
-static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
+static void record__init_features(struct record *rec)
 {
-	struct stat st;
-	int flags;
-	int err, output, feat;
+	struct perf_session *session = rec->session;
+	int feat;
+
+	for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)
+		perf_header__set_feat(&session->header, feat);
+
+	if (rec->no_buildid)
+		perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
+
+	if (!have_tracepoints(&rec->evlist->entries))
+		perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
+
+	if (!rec->opts.branch_stack)
+		perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
+}
+
+static volatile int workload_exec_errno;
+
+/*
+ * perf_evlist__prepare_workload will send a SIGUSR1
+ * if the fork fails, since we asked by setting its
+ * want_signal to true.
+ */
+static void workload_exec_failed_signal(int signo __maybe_unused,
+					siginfo_t *info,
+					void *ucontext __maybe_unused)
+{
+	workload_exec_errno = info->si_value.sival_int;
+	done = 1;
+	child_finished = 1;
+}
+
+static int __cmd_record(struct record *rec, int argc, const char **argv)
+{
+	int err;
+	int status = 0;
 	unsigned long waking = 0;
 	const bool forks = argc > 0;
 	struct machine *machine;
 	struct perf_tool *tool = &rec->tool;
-	struct perf_record_opts *opts = &rec->opts;
-	struct perf_evlist *evsel_list = rec->evlist;
-	const char *output_name = rec->output_name;
+	struct record_opts *opts = &rec->opts;
+	struct perf_data_file *file = &rec->file;
 	struct perf_session *session;
+	bool disabled = false;
 
 	rec->progname = argv[0];
 
-	rec->page_size = sysconf(_SC_PAGE_SIZE);
-
-	on_exit(perf_record__sig_exit, rec);
+	atexit(record__sig_exit);
 	signal(SIGCHLD, sig_handler);
 	signal(SIGINT, sig_handler);
-	signal(SIGUSR1, sig_handler);
+	signal(SIGTERM, sig_handler);
 
-	if (!output_name) {
-		if (!fstat(STDOUT_FILENO, &st) && S_ISFIFO(st.st_mode))
-			opts->pipe_output = true;
-		else
-			rec->output_name = output_name = "perf.data";
-	}
-	if (output_name) {
-		if (!strcmp(output_name, "-"))
-			opts->pipe_output = true;
-		else if (!stat(output_name, &st) && st.st_size) {
-			if (rec->write_mode == WRITE_FORCE) {
-				char oldname[PATH_MAX];
-				snprintf(oldname, sizeof(oldname), "%s.old",
-					 output_name);
-				unlink(oldname);
-				rename(output_name, oldname);
-			}
-		} else if (rec->write_mode == WRITE_APPEND) {
-			rec->write_mode = WRITE_FORCE;
-		}
-	}
-
-	flags = O_CREAT|O_RDWR;
-	if (rec->write_mode == WRITE_APPEND)
-		rec->file_new = 0;
-	else
-		flags |= O_TRUNC;
-
-	if (opts->pipe_output)
-		output = STDOUT_FILENO;
-	else
-		output = open(output_name, flags, S_IRUSR | S_IWUSR);
-	if (output < 0) {
-		perror("failed to create output file");
-		return -1;
-	}
-
-	rec->output = output;
-
-	session = perf_session__new(output_name, O_WRONLY,
-				    rec->write_mode == WRITE_FORCE, false, NULL);
+	session = perf_session__new(file, false, NULL);
 	if (session == NULL) {
-		pr_err("Not enough memory for reading perf file header\n");
+		pr_err("Perf session creation failed.\n");
 		return -1;
 	}
 
 	rec->session = session;
 
-	for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)
-		perf_header__set_feat(&session->header, feat);
-
-	if (rec->no_buildid)
-		perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
-
-	if (!have_tracepoints(&evsel_list->entries))
-		perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
-
-	if (!rec->opts.branch_stack)
-		perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
-
-	if (!rec->file_new) {
-		err = perf_session__read_header(session, output);
-		if (err < 0)
-			goto out_delete_session;
-	}
+	record__init_features(rec);
 
 	if (forks) {
-		err = perf_evlist__prepare_workload(evsel_list, opts, argv);
+		err = perf_evlist__prepare_workload(rec->evlist, &opts->target,
+						    argv, file->is_pipe,
+						    workload_exec_failed_signal);
 		if (err < 0) {
 			pr_err("Couldn't run the workload!\n");
+			status = err;
 			goto out_delete_session;
 		}
 	}
 
-	if (perf_record__open(rec) != 0) {
+	if (record__open(rec) != 0) {
 		err = -1;
-		goto out_delete_session;
+		goto out_child;
 	}
 
-	/*
-	 * perf_session__delete(session) will be called at perf_record__exit()
-	 */
-	on_exit(perf_record__exit, rec);
+	if (!rec->evlist->nr_groups)
+		perf_header__clear_feat(&session->header, HEADER_GROUP_DESC);
 
-	if (opts->pipe_output) {
-		err = perf_header__write_pipe(output);
+	if (file->is_pipe) {
+		err = perf_header__write_pipe(file->fd);
 		if (err < 0)
-			goto out_delete_session;
-	} else if (rec->file_new) {
-		err = perf_session__write_header(session, evsel_list,
-						 output, false);
+			goto out_child;
+	} else {
+		err = perf_session__write_header(session, rec->evlist,
+						 file->fd, false);
 		if (err < 0)
-			goto out_delete_session;
+			goto out_child;
 	}
 
 	if (!rec->no_buildid
@@ -570,34 +356,20 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
 		pr_err("Couldn't generate buildids. "
 		       "Use --no-buildid to profile anyway.\n");
 		err = -1;
-		goto out_delete_session;
+		goto out_child;
 	}
 
-	rec->post_processing_offset = lseek(output, 0, SEEK_CUR);
+	machine = &session->machines.host;
 
-	machine = perf_session__find_host_machine(session);
-	if (!machine) {
-		pr_err("Couldn't find native kernel information.\n");
-		err = -1;
-		goto out_delete_session;
-	}
-
-	if (opts->pipe_output) {
+	if (file->is_pipe) {
 		err = perf_event__synthesize_attrs(tool, session,
 						   process_synthesized_event);
 		if (err < 0) {
 			pr_err("Couldn't synthesize attrs.\n");
-			goto out_delete_session;
+			goto out_child;
 		}
 
-		err = perf_event__synthesize_event_types(tool, process_synthesized_event,
-							 machine);
-		if (err < 0) {
-			pr_err("Couldn't synthesize event_types.\n");
-			goto out_delete_session;
-		}
-
-		if (have_tracepoints(&evsel_list->entries)) {
+		if (have_tracepoints(&rec->evlist->entries)) {
 			/*
 			 * FIXME err <= 0 here actually means that
 			 * there were no tracepoints so its not really
@@ -606,21 +378,18 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
 			 * return this more properly and also
 			 * propagate errors that now are calling die()
 			 */
-			err = perf_event__synthesize_tracing_data(tool, output, evsel_list,
+			err = perf_event__synthesize_tracing_data(tool, file->fd, rec->evlist,
 								  process_synthesized_event);
 			if (err <= 0) {
 				pr_err("Couldn't record tracing data.\n");
-				goto out_delete_session;
+				goto out_child;
 			}
-			advance_output(rec, err);
+			rec->bytes_written += err;
 		}
 	}
 
 	err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event,
-						 machine, "_text");
-	if (err < 0)
-		err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event,
-							 machine, "_stext");
+						 machine);
 	if (err < 0)
 		pr_err("Couldn't record kernel reference relocation symbol\n"
 		       "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n"
@@ -633,20 +402,15 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
 		       "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n"
 		       "Check /proc/modules permission or run as root.\n");
 
-	if (perf_guest)
-		perf_session__process_machines(session, tool,
-					       perf_event__synthesize_guest_os);
-
-	if (!opts->target.system_wide)
-		err = perf_event__synthesize_thread_map(tool, evsel_list->threads,
-						  process_synthesized_event,
-						  machine);
-	else
-		err = perf_event__synthesize_threads(tool, process_synthesized_event,
-					       machine);
+	if (perf_guest) {
+		machines__process_guests(&session->machines,
+					 perf_event__synthesize_guest_os, tool);
+	}
 
+	err = __machine__synthesize_threads(machine, tool, &opts->target, rec->evlist->threads,
+					    process_synthesized_event, opts->sample_address);
 	if (err != 0)
-		goto out_delete_session;
+		goto out_child;
 
 	if (rec->realtime_prio) {
 		struct sched_param param;
@@ -655,56 +419,112 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
 		if (sched_setscheduler(0, SCHED_FIFO, &param)) {
 			pr_err("Could not set realtime priority.\n");
 			err = -1;
-			goto out_delete_session;
+			goto out_child;
 		}
 	}
 
-	perf_evlist__enable(evsel_list);
+	/*
+	 * When perf is starting the traced process, all the events
+	 * (apart from group members) have enable_on_exec=1 set,
+	 * so don't spoil it by prematurely enabling them.
+	 */
+	if (!target__none(&opts->target) && !opts->initial_delay)
+		perf_evlist__enable(rec->evlist);
 
 	/*
 	 * Let the child rip
 	 */
 	if (forks)
-		perf_evlist__start_workload(evsel_list);
+		perf_evlist__start_workload(rec->evlist);
+
+	if (opts->initial_delay) {
+		usleep(opts->initial_delay * 1000);
+		perf_evlist__enable(rec->evlist);
+	}
 
 	for (;;) {
 		int hits = rec->samples;
 
-		if (perf_record__mmap_read_all(rec) < 0) {
+		if (record__mmap_read_all(rec) < 0) {
 			err = -1;
-			goto out_delete_session;
+			goto out_child;
 		}
 
 		if (hits == rec->samples) {
 			if (done)
 				break;
-			err = poll(evsel_list->pollfd, evsel_list->nr_fds, -1);
+			err = poll(rec->evlist->pollfd, rec->evlist->nr_fds, -1);
+			/*
+			 * Propagate error, only if there's any. Ignore positive
+			 * number of returned events and interrupt error.
+			 */
+			if (err > 0 || (err < 0 && errno == EINTR))
+				err = 0;
 			waking++;
 		}
 
-		if (done)
-			perf_evlist__disable(evsel_list);
+		/*
+		 * When perf is starting the traced process, at the end events
+		 * die with the process and we wait for that. Thus no need to
+		 * disable events in this case.
+		 */
+		if (done && !disabled && !target__none(&opts->target)) {
+			perf_evlist__disable(rec->evlist);
+			disabled = true;
+		}
 	}
 
-	if (quiet || signr == SIGUSR1)
-		return 0;
+	if (forks && workload_exec_errno) {
+		char msg[512];
+		const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg));
+		pr_err("Workload failed: %s\n", emsg);
+		err = -1;
+		goto out_child;
+	}
 
-	fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking);
+	if (!quiet) {
+		fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking);
 
-	/*
-	 * Approximate RIP event size: 24 bytes.
-	 */
-	fprintf(stderr,
-		"[ perf record: Captured and wrote %.3f MB %s (~%" PRIu64 " samples) ]\n",
-		(double)rec->bytes_written / 1024.0 / 1024.0,
-		output_name,
-		rec->bytes_written / 24);
+		/*
+		 * Approximate RIP event size: 24 bytes.
+		 */
+		fprintf(stderr,
+			"[ perf record: Captured and wrote %.3f MB %s (~%" PRIu64 " samples) ]\n",
+			(double)rec->bytes_written / 1024.0 / 1024.0,
+			file->path,
+			rec->bytes_written / 24);
+	}
 
-	return 0;
+out_child:
+	if (forks) {
+		int exit_status;
+
+		if (!child_finished)
+			kill(rec->evlist->workload.pid, SIGTERM);
+
+		wait(&exit_status);
+
+		if (err < 0)
+			status = err;
+		else if (WIFEXITED(exit_status))
+			status = WEXITSTATUS(exit_status);
+		else if (WIFSIGNALED(exit_status))
+			signr = WTERMSIG(exit_status);
+	} else
+		status = err;
+
+	if (!err && !file->is_pipe) {
+		rec->session->header.data_size += rec->bytes_written;
+
+		if (!rec->no_buildid)
+			process_buildids(rec);
+		perf_session__write_header(rec->session, rec->evlist,
+					   file->fd, true);
+	}
 
 out_delete_session:
 	perf_session__delete(session);
-	return err;
+	return status;
 }
 
 #define BRANCH_OPT(n, m) \
@@ -725,6 +545,10 @@ static const struct branch_mode branch_modes[] = {
 	BRANCH_OPT("any_call", PERF_SAMPLE_BRANCH_ANY_CALL),
 	BRANCH_OPT("any_ret", PERF_SAMPLE_BRANCH_ANY_RETURN),
 	BRANCH_OPT("ind_call", PERF_SAMPLE_BRANCH_IND_CALL),
+	BRANCH_OPT("abort_tx", PERF_SAMPLE_BRANCH_ABORT_TX),
+	BRANCH_OPT("in_tx", PERF_SAMPLE_BRANCH_IN_TX),
+	BRANCH_OPT("no_tx", PERF_SAMPLE_BRANCH_NO_TX),
+	BRANCH_OPT("cond", PERF_SAMPLE_BRANCH_COND),
 	BRANCH_END
 };
 
@@ -791,7 +615,7 @@ error:
 	return ret;
 }
 
-#ifdef LIBUNWIND_SUPPORT
+#ifdef HAVE_DWARF_UNWIND_SUPPORT
 static int get_stack_size(char *str, unsigned long *_size)
 {
 	char *endptr;
@@ -817,24 +641,14 @@ static int get_stack_size(char *str, unsigned long *_size)
 	       max_size, str);
 	return -1;
 }
-#endif /* LIBUNWIND_SUPPORT */
+#endif /* HAVE_DWARF_UNWIND_SUPPORT */
 
-static int
-parse_callchain_opt(const struct option *opt __maybe_unused, const char *arg,
-		    int unset)
+int record_parse_callchain(const char *arg, struct record_opts *opts)
 {
-	struct perf_record *rec = (struct perf_record *)opt->value;
 	char *tok, *name, *saveptr = NULL;
 	char *buf;
 	int ret = -1;
 
-	/* --no-call-graph */
-	if (unset)
-		return 0;
-
-	/* We specified default option if none is provided. */
-	BUG_ON(!arg);
-
 	/* We need buffer that we know we can write to. */
 	buf = malloc(strlen(arg) + 1);
 	if (!buf)
@@ -849,36 +663,32 @@ parse_callchain_opt(const struct option *opt __maybe_unused, const char *arg,
 		/* Framepointer style */
 		if (!strncmp(name, "fp", sizeof("fp"))) {
 			if (!strtok_r(NULL, ",", &saveptr)) {
-				rec->opts.call_graph = CALLCHAIN_FP;
+				opts->call_graph = CALLCHAIN_FP;
 				ret = 0;
 			} else
 				pr_err("callchain: No more arguments "
 				       "needed for -g fp\n");
 			break;
 
-#ifdef LIBUNWIND_SUPPORT
+#ifdef HAVE_DWARF_UNWIND_SUPPORT
 		/* Dwarf style */
 		} else if (!strncmp(name, "dwarf", sizeof("dwarf"))) {
 			const unsigned long default_stack_dump_size = 8192;
 
 			ret = 0;
-			rec->opts.call_graph = CALLCHAIN_DWARF;
-			rec->opts.stack_dump_size = default_stack_dump_size;
+			opts->call_graph = CALLCHAIN_DWARF;
+			opts->stack_dump_size = default_stack_dump_size;
 
 			tok = strtok_r(NULL, ",", &saveptr);
 			if (tok) {
 				unsigned long size = 0;
 
 				ret = get_stack_size(tok, &size);
-				rec->opts.stack_dump_size = size;
+				opts->stack_dump_size = size;
 			}
-
-			if (!ret)
-				pr_debug("callchain: stack dump size %d\n",
-					 rec->opts.stack_dump_size);
-#endif /* LIBUNWIND_SUPPORT */
+#endif /* HAVE_DWARF_UNWIND_SUPPORT */
 		} else {
-			pr_err("callchain: Unknown -g option "
+			pr_err("callchain: Unknown --call-graph option "
 			       "value: %s\n", arg);
 			break;
 		}
@@ -886,13 +696,68 @@ parse_callchain_opt(const struct option *opt __maybe_unused, const char *arg,
 	} while (0);
 
 	free(buf);
+	return ret;
+}
+
+static void callchain_debug(struct record_opts *opts)
+{
+	static const char *str[CALLCHAIN_MAX] = { "NONE", "FP", "DWARF" };
+
+	pr_debug("callchain: type %s\n", str[opts->call_graph]);
+
+	if (opts->call_graph == CALLCHAIN_DWARF)
+		pr_debug("callchain: stack dump size %d\n",
+			 opts->stack_dump_size);
+}
+
+int record_parse_callchain_opt(const struct option *opt,
+			       const char *arg,
+			       int unset)
+{
+	struct record_opts *opts = opt->value;
+	int ret;
+
+	opts->call_graph_enabled = !unset;
 
+	/* --no-call-graph */
+	if (unset) {
+		opts->call_graph = CALLCHAIN_NONE;
+		pr_debug("callchain: disabled\n");
+		return 0;
+	}
+
+	ret = record_parse_callchain(arg, opts);
 	if (!ret)
-		pr_debug("callchain: type %d\n", rec->opts.call_graph);
+		callchain_debug(opts);
 
 	return ret;
 }
 
+int record_callchain_opt(const struct option *opt,
+			 const char *arg __maybe_unused,
+			 int unset __maybe_unused)
+{
+	struct record_opts *opts = opt->value;
+
+	opts->call_graph_enabled = !unset;
+
+	if (opts->call_graph == CALLCHAIN_NONE)
+		opts->call_graph = CALLCHAIN_FP;
+
+	callchain_debug(opts);
+	return 0;
+}
+
+static int perf_record_config(const char *var, const char *value, void *cb)
+{
+	struct record *rec = cb;
+
+	if (!strcmp(var, "record.call-graph"))
+		return record_parse_callchain(value, &rec->opts);
+
+	return perf_default_config(var, value, cb);
+}
+
 static const char * const record_usage[] = {
 	"perf record [<options>] [<command>]",
 	"perf record [<options>] -- <command> [<options>]",
@@ -900,8 +765,8 @@ static const char * const record_usage[] = {
 };
 
 /*
- * XXX Ideally would be local to cmd_record() and passed to a perf_record__new
- * because we need to have access to it in perf_record__exit, that is called
+ * XXX Ideally would be local to cmd_record() and passed to a record__new
+ * because we need to have access to it in record__exit, that is called
  * after cmd_record() exits, but since record_options need to be accessible to
  * builtin-script, leave it here.
  *
@@ -909,7 +774,7 @@ static const char * const record_usage[] = {
  *
  * Just say no to tons of global variables, sigh.
  */
-static struct perf_record record = {
+static struct record record = {
 	.opts = {
 		.mmap_pages	     = UINT_MAX,
 		.user_freq	     = UINT_MAX,
@@ -917,24 +782,23 @@ static struct perf_record record = {
 		.freq		     = 4000,
 		.target		     = {
 			.uses_mmap   = true,
+			.default_per_cpu = true,
 		},
 	},
-	.write_mode = WRITE_FORCE,
-	.file_new   = true,
 };
 
-#define CALLCHAIN_HELP "do call-graph (stack chain/backtrace) recording: "
+#define CALLCHAIN_HELP "setup and enables call-graph (stack chain/backtrace) recording: "
 
-#ifdef LIBUNWIND_SUPPORT
-static const char callchain_help[] = CALLCHAIN_HELP "[fp] dwarf";
+#ifdef HAVE_DWARF_UNWIND_SUPPORT
+const char record_callchain_help[] = CALLCHAIN_HELP "fp dwarf";
 #else
-static const char callchain_help[] = CALLCHAIN_HELP "[fp]";
+const char record_callchain_help[] = CALLCHAIN_HELP "fp";
 #endif
 
 /*
  * XXX Will stay a global variable till we fix builtin-script.c to stop messing
  * with it and switch to use the library functions in perf_evlist that came
- * from builtin-record.c, i.e. use perf_record_opts,
+ * from builtin-record.c, i.e. use record_opts,
  * perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record',
  * using pipes, etc.
  */
@@ -950,31 +814,32 @@ const struct option record_options[] = {
 		    "record events on existing thread id"),
 	OPT_INTEGER('r', "realtime", &record.realtime_prio,
 		    "collect data with this RT SCHED_FIFO priority"),
-	OPT_BOOLEAN('D', "no-delay", &record.opts.no_delay,
+	OPT_BOOLEAN(0, "no-buffering", &record.opts.no_buffering,
 		    "collect data without buffering"),
 	OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples,
 		    "collect raw sample records from all opened counters"),
 	OPT_BOOLEAN('a', "all-cpus", &record.opts.target.system_wide,
 			    "system-wide collection from all CPUs"),
-	OPT_BOOLEAN('A', "append", &record.append_file,
-			    "append to the output file to do incremental profiling"),
 	OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu",
 		    "list of cpus to monitor"),
-	OPT_BOOLEAN('f', "force", &record.force,
-			"overwrite existing data file (deprecated)"),
 	OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"),
-	OPT_STRING('o', "output", &record.output_name, "file",
+	OPT_STRING('o', "output", &record.file.path, "file",
 		    "output file name"),
-	OPT_BOOLEAN('i', "no-inherit", &record.opts.no_inherit,
-		    "child tasks do not inherit counters"),
+	OPT_BOOLEAN_SET('i', "no-inherit", &record.opts.no_inherit,
+			&record.opts.no_inherit_set,
+			"child tasks do not inherit counters"),
 	OPT_UINTEGER('F', "freq", &record.opts.user_freq, "profile at this frequency"),
-	OPT_UINTEGER('m', "mmap-pages", &record.opts.mmap_pages,
-		     "number of mmap data pages"),
+	OPT_CALLBACK('m', "mmap-pages", &record.opts.mmap_pages, "pages",
+		     "number of mmap data pages",
+		     perf_evlist__parse_mmap_pages),
 	OPT_BOOLEAN(0, "group", &record.opts.group,
 		    "put the counters into a counter group"),
-	OPT_CALLBACK_DEFAULT('g', "call-graph", &record, "mode[,dump_size]",
-			     callchain_help, &parse_callchain_opt,
-			     "fp"),
+	OPT_CALLBACK_NOOPT('g', NULL, &record.opts,
+			   NULL, "enables call-graph recording" ,
+			   &record_callchain_opt),
+	OPT_CALLBACK(0, "call-graph", &record.opts,
+		     "mode[,dump_size]", record_callchain_help,
+		     &record_parse_callchain_opt),
 	OPT_INCR('v', "verbose", &verbose,
 		    "be more verbose (show counter open errors, etc)"),
 	OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"),
@@ -993,6 +858,8 @@ const struct option record_options[] = {
 	OPT_CALLBACK('G', "cgroup", &record.evlist, "name",
 		     "monitor event in cgroup name only",
 		     parse_cgroups),
+	OPT_UINTEGER('D', "delay", &record.opts.initial_delay,
+		  "ms to wait before starting measurement after program start"),
 	OPT_STRING('u', "uid", &record.opts.target.uid_str, "user",
 		   "user to profile"),
 
@@ -1003,38 +870,32 @@ const struct option record_options[] = {
 	OPT_CALLBACK('j', "branch-filter", &record.opts.branch_stack,
 		     "branch filter mask", "branch stack filter modes",
 		     parse_branch_stack),
+	OPT_BOOLEAN('W', "weight", &record.opts.sample_weight,
+		    "sample by weight (on special events only)"),
+	OPT_BOOLEAN(0, "transaction", &record.opts.sample_transaction,
+		    "sample transaction flags (special events only)"),
+	OPT_BOOLEAN(0, "per-thread", &record.opts.target.per_thread,
+		    "use per-thread mmaps"),
 	OPT_END()
 };
 
 int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused)
 {
 	int err = -ENOMEM;
-	struct perf_evsel *pos;
-	struct perf_evlist *evsel_list;
-	struct perf_record *rec = &record;
+	struct record *rec = &record;
 	char errbuf[BUFSIZ];
 
-	evsel_list = perf_evlist__new(NULL, NULL);
-	if (evsel_list == NULL)
+	rec->evlist = perf_evlist__new();
+	if (rec->evlist == NULL)
 		return -ENOMEM;
 
-	rec->evlist = evsel_list;
+	perf_config(perf_record_config, rec);
 
 	argc = parse_options(argc, argv, record_options, record_usage,
 			    PARSE_OPT_STOP_AT_NON_OPTION);
-	if (!argc && perf_target__none(&rec->opts.target))
+	if (!argc && target__none(&rec->opts.target))
 		usage_with_options(record_usage, record_options);
 
-	if (rec->force && rec->append_file) {
-		ui__error("Can't overwrite and append at the same time."
-			  " You need to choose between -f and -A");
-		usage_with_options(record_usage, record_options);
-	} else if (rec->append_file) {
-		rec->write_mode = WRITE_APPEND;
-	} else {
-		rec->write_mode = WRITE_FORCE;
-	}
-
 	if (nr_cgroups && !rec->opts.target.system_wide) {
 		ui__error("cgroup monitoring only available in"
 			  " system-wide mode\n");
@@ -1056,60 +917,44 @@ int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused)
 	if (rec->no_buildid_cache || rec->no_buildid)
 		disable_buildid_cache();
 
-	if (evsel_list->nr_entries == 0 &&
-	    perf_evlist__add_default(evsel_list) < 0) {
+	if (rec->evlist->nr_entries == 0 &&
+	    perf_evlist__add_default(rec->evlist) < 0) {
 		pr_err("Not enough memory for event selector list\n");
 		goto out_symbol_exit;
 	}
 
-	err = perf_target__validate(&rec->opts.target);
+	if (rec->opts.target.tid && !rec->opts.no_inherit_set)
+		rec->opts.no_inherit = true;
+
+	err = target__validate(&rec->opts.target);
 	if (err) {
-		perf_target__strerror(&rec->opts.target, err, errbuf, BUFSIZ);
+		target__strerror(&rec->opts.target, err, errbuf, BUFSIZ);
 		ui__warning("%s", errbuf);
 	}
 
-	err = perf_target__parse_uid(&rec->opts.target);
+	err = target__parse_uid(&rec->opts.target);
 	if (err) {
 		int saved_errno = errno;
 
-		perf_target__strerror(&rec->opts.target, err, errbuf, BUFSIZ);
+		target__strerror(&rec->opts.target, err, errbuf, BUFSIZ);
 		ui__error("%s", errbuf);
 
 		err = -saved_errno;
-		goto out_free_fd;
+		goto out_symbol_exit;
 	}
 
 	err = -ENOMEM;
-	if (perf_evlist__create_maps(evsel_list, &rec->opts.target) < 0)
+	if (perf_evlist__create_maps(rec->evlist, &rec->opts.target) < 0)
 		usage_with_options(record_usage, record_options);
 
-	list_for_each_entry(pos, &evsel_list->entries, node) {
-		if (perf_header__push_event(pos->attr.config, perf_evsel__name(pos)))
-			goto out_free_fd;
-	}
-
-	if (rec->opts.user_interval != ULLONG_MAX)
-		rec->opts.default_interval = rec->opts.user_interval;
-	if (rec->opts.user_freq != UINT_MAX)
-		rec->opts.freq = rec->opts.user_freq;
-
-	/*
-	 * User specified count overrides default frequency.
-	 */
-	if (rec->opts.default_interval)
-		rec->opts.freq = 0;
-	else if (rec->opts.freq) {
-		rec->opts.default_interval = rec->opts.freq;
-	} else {
-		ui__error("frequency and count are zero, aborting\n");
+	if (record_opts__config(&rec->opts)) {
 		err = -EINVAL;
-		goto out_free_fd;
+		goto out_symbol_exit;
 	}
 
 	err = __cmd_record(&record, argc, argv);
-out_free_fd:
-	perf_evlist__delete_maps(evsel_list);
 out_symbol_exit:
+	perf_evlist__delete(rec->evlist);
 	symbol__exit();
 	return err;
 }