Merge tag 'perf-core-for-mingo-5.4-20190829' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

perf top:

  Namhyung Kim:

  - Decay all events in the evlist, we were decaying just the first event
    in a group.

  - Fix linking of histograms in different evsels in a event group with more
    than two events.

  With the two fixes above a command line such as:

    # perf top -e '{cycles,instructions,cache-misses,cache-references}

    Should work as expected, with four columns and with all of them being
    decayed over time, i.e. less weight is given for older samples.

perf record:

  Arnaldo Carvalho de Melo:

  - Fix collection of build-ids when using setns() to get into namespaces,
    which had been broken with the introduction of the extra thread to
    react to PERF_RECORD_BPF_EVENT, i.e. to collect extra info for BPF
    programs. We need to unshare(CLONE_FS) in that thread so that the
    main one can do the setns(CLONE_NEWNS) when collectingthe build-ids.
    Without that symbol resolution gets more difficult and potentially
    misresolves symbols.

core:

  Igor Lubashev:

  - Further alignment in permission checking via capabilities to how the
    kernel checks what tooling tries to do.

PowerPC:

  Naveen N. Rao:

  - Sync powerpc syscall.tbl, so that 'perf trace' gets the definitions
    for recent syscalls.

libperf:

  Jiri Olsa:

  - Move the rest of the PERF_RECORD_ metadata struct definitions so that
    we can use 'union perf_event'.

libtraceevent:

  Steven Rostedt (VMware):

  - Do not free tep->cmdlines in add_new_comm() on failure.

  - Remove unneeded qsort and uses memmove instead

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

29 files changed, 172 insertions, 439 deletions

diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c
index a314e5b26e9d..d7c3fbb3694f 100644
--- a/tools/perf/util/arm-spe.c
+++ b/tools/perf/util/arm-spe.c
@@ -181,7 +181,7 @@ static const char * const arm_spe_info_fmts[] = {
 	[ARM_SPE_PMU_TYPE]		= "  PMU Type           %"PRId64"\n",
 };
 
-static void arm_spe_print_info(u64 *arr)
+static void arm_spe_print_info(__u64 *arr)
 {
 	if (!dump_trace)
 		return;
@@ -192,12 +192,12 @@ static void arm_spe_print_info(u64 *arr)
 int arm_spe_process_auxtrace_info(union perf_event *event,
 				  struct perf_session *session)
 {
-	struct auxtrace_info_event *auxtrace_info = &event->auxtrace_info;
+	struct perf_record_auxtrace_info *auxtrace_info = &event->auxtrace_info;
 	size_t min_sz = sizeof(u64) * ARM_SPE_PMU_TYPE;
 	struct arm_spe *spe;
 	int err;
 
-	if (auxtrace_info->header.size < sizeof(struct auxtrace_info_event) +
+	if (auxtrace_info->header.size < sizeof(struct perf_record_auxtrace_info) +
 					min_sz)
 		return -EINVAL;
 
diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c
index 12e9b7acbb2c..10c707724035 100644
--- a/tools/perf/util/auxtrace.c
+++ b/tools/perf/util/auxtrace.c
@@ -50,6 +50,7 @@
 #include "intel-bts.h"
 #include "arm-spe.h"
 #include "s390-cpumsf.h"
+#include "util.h"
 
 #include <linux/ctype.h>
 #include "symbol/kallsyms.h"
@@ -385,7 +386,7 @@ static int auxtrace_queues__add_indexed_event(struct auxtrace_queues *queues,
 		return err;
 
 	if (event->header.type == PERF_RECORD_AUXTRACE) {
-		if (event->header.size < sizeof(struct auxtrace_event) ||
+		if (event->header.size < sizeof(struct perf_record_auxtrace) ||
 		    event->header.size != sz) {
 			err = -EINVAL;
 			goto out;
@@ -518,7 +519,7 @@ static int auxtrace_not_supported(void)
 
 int auxtrace_record__info_fill(struct auxtrace_record *itr,
 			       struct perf_session *session,
-			       struct auxtrace_info_event *auxtrace_info,
+			       struct perf_record_auxtrace_info *auxtrace_info,
 			       size_t priv_size)
 {
 	if (itr)
@@ -858,13 +859,13 @@ void auxtrace_buffer__free(struct auxtrace_buffer *buffer)
 	free(buffer);
 }
 
-void auxtrace_synth_error(struct auxtrace_error_event *auxtrace_error, int type,
+void auxtrace_synth_error(struct perf_record_auxtrace_error *auxtrace_error, int type,
 			  int code, int cpu, pid_t pid, pid_t tid, u64 ip,
 			  const char *msg, u64 timestamp)
 {
 	size_t size;
 
-	memset(auxtrace_error, 0, sizeof(struct auxtrace_error_event));
+	memset(auxtrace_error, 0, sizeof(struct perf_record_auxtrace_error));
 
 	auxtrace_error->header.type = PERF_RECORD_AUXTRACE_ERROR;
 	auxtrace_error->type = type;
@@ -893,12 +894,12 @@ int perf_event__synthesize_auxtrace_info(struct auxtrace_record *itr,
 
 	pr_debug2("Synthesizing auxtrace information\n");
 	priv_size = auxtrace_record__info_priv_size(itr, session->evlist);
-	ev = zalloc(sizeof(struct auxtrace_info_event) + priv_size);
+	ev = zalloc(sizeof(struct perf_record_auxtrace_info) + priv_size);
 	if (!ev)
 		return -ENOMEM;
 
 	ev->auxtrace_info.header.type = PERF_RECORD_AUXTRACE_INFO;
-	ev->auxtrace_info.header.size = sizeof(struct auxtrace_info_event) +
+	ev->auxtrace_info.header.size = sizeof(struct perf_record_auxtrace_info) +
 					priv_size;
 	err = auxtrace_record__info_fill(itr, session, &ev->auxtrace_info,
 					 priv_size);
@@ -942,7 +943,7 @@ s64 perf_event__process_auxtrace(struct perf_session *session,
 	s64 err;
 
 	if (dump_trace)
-		fprintf(stdout, " size: %#"PRIx64"  offset: %#"PRIx64"  ref: %#"PRIx64"  idx: %u  tid: %d  cpu: %d\n",
+		fprintf(stdout, " size: %#"PRI_lx64"  offset: %#"PRI_lx64"  ref: %#"PRI_lx64"  idx: %u  tid: %d  cpu: %d\n",
 			event->auxtrace.size, event->auxtrace.offset,
 			event->auxtrace.reference, event->auxtrace.idx,
 			event->auxtrace.tid, event->auxtrace.cpu);
@@ -1168,7 +1169,7 @@ static const char *auxtrace_error_name(int type)
 
 size_t perf_event__fprintf_auxtrace_error(union perf_event *event, FILE *fp)
 {
-	struct auxtrace_error_event *e = &event->auxtrace_error;
+	struct perf_record_auxtrace_error *e = &event->auxtrace_error;
 	unsigned long long nsecs = e->time;
 	const char *msg = e->msg;
 	int ret;
@@ -1188,7 +1189,7 @@ size_t perf_event__fprintf_auxtrace_error(union perf_event *event, FILE *fp)
 	if (!e->fmt)
 		msg = (const char *)&e->time;
 
-	ret += fprintf(fp, " cpu %d pid %d tid %d ip %#"PRIx64" code %u: %s\n",
+	ret += fprintf(fp, " cpu %d pid %d tid %d ip %#"PRI_lx64" code %u: %s\n",
 		       e->cpu, e->pid, e->tid, e->ip, e->code, msg);
 	return ret;
 }
@@ -1196,7 +1197,7 @@ size_t perf_event__fprintf_auxtrace_error(union perf_event *event, FILE *fp)
 void perf_session__auxtrace_error_inc(struct perf_session *session,
 				      union perf_event *event)
 {
-	struct auxtrace_error_event *e = &event->auxtrace_error;
+	struct perf_record_auxtrace_error *e = &event->auxtrace_error;
 
 	if (e->type < PERF_AUXTRACE_ERROR_MAX)
 		session->evlist->stats.nr_auxtrace_errors[e->type] += 1;
diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h
index 8e637ac3918e..b213e6431d88 100644
--- a/tools/perf/util/auxtrace.h
+++ b/tools/perf/util/auxtrace.h
@@ -28,7 +28,7 @@ struct perf_tool;
 struct perf_mmap;
 struct option;
 struct record_opts;
-struct auxtrace_info_event;
+struct perf_record_auxtrace_info;
 struct events_stats;
 
 /* Auxtrace records must have the same alignment as perf event records */
@@ -318,7 +318,7 @@ struct auxtrace_record {
 				 struct evlist *evlist);
 	int (*info_fill)(struct auxtrace_record *itr,
 			 struct perf_session *session,
-			 struct auxtrace_info_event *auxtrace_info,
+			 struct perf_record_auxtrace_info *auxtrace_info,
 			 size_t priv_size);
 	void (*free)(struct auxtrace_record *itr);
 	int (*snapshot_start)(struct auxtrace_record *itr);
@@ -498,7 +498,7 @@ size_t auxtrace_record__info_priv_size(struct auxtrace_record *itr,
 				       struct evlist *evlist);
 int auxtrace_record__info_fill(struct auxtrace_record *itr,
 			       struct perf_session *session,
-			       struct auxtrace_info_event *auxtrace_info,
+			       struct perf_record_auxtrace_info *auxtrace_info,
 			       size_t priv_size);
 void auxtrace_record__free(struct auxtrace_record *itr);
 int auxtrace_record__snapshot_start(struct auxtrace_record *itr);
@@ -515,7 +515,7 @@ int auxtrace_index__process(int fd, u64 size, struct perf_session *session,
 			    bool needs_swap);
 void auxtrace_index__free(struct list_head *head);
 
-void auxtrace_synth_error(struct auxtrace_error_event *auxtrace_error, int type,
+void auxtrace_synth_error(struct perf_record_auxtrace_error *auxtrace_error, int type,
 			  int code, int cpu, pid_t pid, pid_t tid, u64 ip,
 			  const char *msg, u64 timestamp);
 
diff --git a/tools/perf/util/bpf-loader.c b/tools/perf/util/bpf-loader.c
index e20d7c5e1925..80a828e75cf6 100644
--- a/tools/perf/util/bpf-loader.c
+++ b/tools/perf/util/bpf-loader.c
@@ -23,6 +23,7 @@
 #include "probe-finder.h" // for MAX_PROBES
 #include "parse-events.h"
 #include "strfilter.h"
+#include "util.h"
 #include "llvm-utils.h"
 #include "c++/clang-c.h"
 
diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c
index b98754863de9..4c96a33b09ff 100644
--- a/tools/perf/util/build-id.c
+++ b/tools/perf/util/build-id.c
@@ -295,7 +295,7 @@ static int write_buildid(const char *name, size_t name_len, u8 *build_id,
 			 pid_t pid, u16 misc, struct feat_fd *fd)
 {
 	int err;
-	struct build_id_event b;
+	struct perf_record_header_build_id b;
 	size_t len;
 
 	len = name_len + 1;
diff --git a/tools/perf/util/c++/clang-c.h b/tools/perf/util/c++/clang-c.h
index e513366f2ee0..2df8a45bd088 100644
--- a/tools/perf/util/c++/clang-c.h
+++ b/tools/perf/util/c++/clang-c.h
@@ -3,7 +3,6 @@
 #define PERF_UTIL_CLANG_C_H
 
 #include <stddef.h>	/* for size_t */
-#include <util-cxx.h>	/* for __maybe_unused */
 
 #ifdef __cplusplus
 extern "C" {
@@ -22,6 +21,7 @@ extern int perf_clang__compile_bpf(const char *filename,
 #else
 
 #include <errno.h>
+#include <linux/compiler.h>	/* for __maybe_unused */
 
 static inline void perf_clang__init(void) { }
 static inline void perf_clang__cleanup(void) { }
diff --git a/tools/perf/util/c++/clang-test.cpp b/tools/perf/util/c++/clang-test.cpp
index 7b042a5ebc68..21b23605f78b 100644
--- a/tools/perf/util/c++/clang-test.cpp
+++ b/tools/perf/util/c++/clang-test.cpp
@@ -1,10 +1,12 @@
 // SPDX-License-Identifier: GPL-2.0
 #include "clang.h"
 #include "clang-c.h"
+extern "C" {
+#include "../util.h"
+}
 #include "llvm/IR/Function.h"
 #include "llvm/IR/LLVMContext.h"
 
-#include <util-cxx.h>
 #include <tests/llvm.h>
 #include <string>
 
diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c
index f5c21184e1fc..b9301e7e9c76 100644
--- a/tools/perf/util/cpumap.c
+++ b/tools/perf/util/cpumap.c
@@ -43,7 +43,7 @@ static struct perf_cpu_map *cpu_map__from_entries(struct cpu_map_entries *cpus)
 	return map;
 }
 
-static struct perf_cpu_map *cpu_map__from_mask(struct cpu_map_mask *mask)
+static struct perf_cpu_map *cpu_map__from_mask(struct perf_record_record_cpu_map *mask)
 {
 	struct perf_cpu_map *map;
 	int nr, nbits = mask->nr * mask->long_size * BITS_PER_BYTE;
@@ -61,12 +61,12 @@ static struct perf_cpu_map *cpu_map__from_mask(struct cpu_map_mask *mask)
 
 }
 
-struct perf_cpu_map *cpu_map__new_data(struct cpu_map_data *data)
+struct perf_cpu_map *cpu_map__new_data(struct perf_record_cpu_map_data *data)
 {
 	if (data->type == PERF_CPU_MAP__CPUS)
 		return cpu_map__from_entries((struct cpu_map_entries *)data->data);
 	else
-		return cpu_map__from_mask((struct cpu_map_mask *)data->data);
+		return cpu_map__from_mask((struct perf_record_record_cpu_map *)data->data);
 }
 
 size_t cpu_map__fprintf(struct perf_cpu_map *map, FILE *fp)
diff --git a/tools/perf/util/cpumap.h b/tools/perf/util/cpumap.h
index c2519e7ea958..2553bef1279d 100644
--- a/tools/perf/util/cpumap.h
+++ b/tools/perf/util/cpumap.h
@@ -7,10 +7,10 @@
 #include <internal/cpumap.h>
 #include <perf/cpumap.h>
 
-struct cpu_map_data;
+struct perf_record_cpu_map_data;
 
 struct perf_cpu_map *perf_cpu_map__empty_new(int nr);
-struct perf_cpu_map *cpu_map__new_data(struct cpu_map_data *data);
+struct perf_cpu_map *cpu_map__new_data(struct perf_record_cpu_map_data *data);
 size_t cpu_map__snprint(struct perf_cpu_map *map, char *buf, size_t size);
 size_t cpu_map__snprint_mask(struct perf_cpu_map *map, char *buf, size_t size);
 size_t cpu_map__fprintf(struct perf_cpu_map *map, FILE *fp);
diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index b3a5daaf1a8f..d6de3834865e 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c
@@ -2370,7 +2370,7 @@ static const char * const cs_etmv4_priv_fmts[] = {
 	[CS_ETMV4_TRCAUTHSTATUS] = "	TRCAUTHSTATUS		       %llx\n",
 };
 
-static void cs_etm__print_auxtrace_info(u64 *val, int num)
+static void cs_etm__print_auxtrace_info(__u64 *val, int num)
 {
 	int i, j, cpu = 0;
 
@@ -2393,7 +2393,7 @@ static void cs_etm__print_auxtrace_info(u64 *val, int num)
 int cs_etm__process_auxtrace_info(union perf_event *event,
 				  struct perf_session *session)
 {
-	struct auxtrace_info_event *auxtrace_info = &event->auxtrace_info;
+	struct perf_record_auxtrace_info *auxtrace_info = &event->auxtrace_info;
 	struct cs_etm_auxtrace *etm = NULL;
 	struct int_node *inode;
 	unsigned int pmu_type;
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 33616ea62a47..c9d1f83c747a 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -913,11 +913,13 @@ static int __perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
 	int err;
 	union perf_event *event;
 
-	if (symbol_conf.kptr_restrict)
-		return -1;
 	if (map == NULL)
 		return -1;
 
+	kmap = map__kmap(map);
+	if (!kmap->ref_reloc_sym)
+		return -1;
+
 	/*
 	 * We should get this from /sys/kernel/sections/.text, but till that is
 	 * available use this, and after it is use this as a fallback for older
@@ -940,7 +942,6 @@ static int __perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
 		event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
 	}
 
-	kmap = map__kmap(map);
 	size = snprintf(event->mmap.filename, sizeof(event->mmap.filename),
 			"%s%s", machine->mmap_name, kmap->ref_reloc_sym->name) + 1;
 	size = PERF_ALIGN(size, sizeof(u64));
@@ -991,7 +992,7 @@ int perf_event__synthesize_thread_map2(struct perf_tool *tool,
 	event->thread_map.nr = threads->nr;
 
 	for (i = 0; i < threads->nr; i++) {
-		struct thread_map_event_entry *entry = &event->thread_map.entries[i];
+		struct perf_record_thread_map_entry *entry = &event->thread_map.entries[i];
 		char *comm = perf_thread_map__comm(threads, i);
 
 		if (!comm)
@@ -1018,7 +1019,7 @@ static void synthesize_cpus(struct cpu_map_entries *cpus,
 		cpus->cpu[i] = map->map[i];
 }
 
-static void synthesize_mask(struct cpu_map_mask *mask,
+static void synthesize_mask(struct perf_record_record_cpu_map *mask,
 			    struct perf_cpu_map *map, int max)
 {
 	int i;
@@ -1049,7 +1050,7 @@ static size_t mask_size(struct perf_cpu_map *map, int *max)
 			*max = bit;
 	}
 
-	return sizeof(struct cpu_map_mask) + BITS_TO_LONGS(*max) * sizeof(long);
+	return sizeof(struct perf_record_record_cpu_map) + BITS_TO_LONGS(*max) * sizeof(long);
 }
 
 void *cpu_map_data__alloc(struct perf_cpu_map *map, size_t *size, u16 *type, int *max)
@@ -1060,15 +1061,15 @@ void *cpu_map_data__alloc(struct perf_cpu_map *map, size_t *size, u16 *type, int
 	/*
 	 * Both array and mask data have variable size based
 	 * on the number of cpus and their actual values.
-	 * The size of the 'struct cpu_map_data' is:
+	 * The size of the 'struct perf_record_cpu_map_data' is:
 	 *
 	 *   array = size of 'struct cpu_map_entries' +
 	 *           number of cpus * sizeof(u64)
 	 *
-	 *   mask  = size of 'struct cpu_map_mask' +
+	 *   mask  = size of 'struct perf_record_record_cpu_map' +
 	 *           maximum cpu bit converted to size of longs
 	 *
-	 * and finaly + the size of 'struct cpu_map_data'.
+	 * and finaly + the size of 'struct perf_record_cpu_map_data'.
 	 */
 	size_cpus = cpus_size(map);
 	size_mask = mask_size(map, max);
@@ -1081,12 +1082,12 @@ void *cpu_map_data__alloc(struct perf_cpu_map *map, size_t *size, u16 *type, int
 		*type  = PERF_CPU_MAP__MASK;
 	}
 
-	*size += sizeof(struct cpu_map_data);
+	*size += sizeof(struct perf_record_cpu_map_data);
 	*size = PERF_ALIGN(*size, sizeof(u64));
 	return zalloc(*size);
 }
 
-void cpu_map_data__synthesize(struct cpu_map_data *data, struct perf_cpu_map *map,
+void cpu_map_data__synthesize(struct perf_record_cpu_map_data *data, struct perf_cpu_map *map,
 			      u16 type, int max)
 {
 	data->type = type;
@@ -1096,16 +1097,16 @@ void cpu_map_data__synthesize(struct cpu_map_data *data, struct perf_cpu_map *ma
 		synthesize_cpus((struct cpu_map_entries *) data->data, map);
 		break;
 	case PERF_CPU_MAP__MASK:
-		synthesize_mask((struct cpu_map_mask *) data->data, map, max);
+		synthesize_mask((struct perf_record_record_cpu_map *)data->data, map, max);
 	default:
 		break;
 	};
 }
 
-static struct cpu_map_event* cpu_map_event__new(struct perf_cpu_map *map)
+static struct perf_record_cpu_map *cpu_map_event__new(struct perf_cpu_map *map)
 {
-	size_t size = sizeof(struct cpu_map_event);
-	struct cpu_map_event *event;
+	size_t size = sizeof(struct perf_record_cpu_map);
+	struct perf_record_cpu_map *event;
 	int max;
 	u16 type;
 
@@ -1126,7 +1127,7 @@ int perf_event__synthesize_cpu_map(struct perf_tool *tool,
 				   perf_event__handler_t process,
 				   struct machine *machine)
 {
-	struct cpu_map_event *event;
+	struct perf_record_cpu_map *event;
 	int err;
 
 	event = cpu_map_event__new(map);
@@ -1144,7 +1145,7 @@ int perf_event__synthesize_stat_config(struct perf_tool *tool,
 				       perf_event__handler_t process,
 				       struct machine *machine)
 {
-	struct stat_config_event *event;
+	struct perf_record_stat_config *event;
 	int size, i = 0, err;
 
 	size  = sizeof(*event);
@@ -1183,7 +1184,7 @@ int perf_event__synthesize_stat(struct perf_tool *tool,
 				perf_event__handler_t process,
 				struct machine *machine)
 {
-	struct stat_event event;
+	struct perf_record_stat event;
 
 	event.header.type = PERF_RECORD_STAT;
 	event.header.size = sizeof(event);
@@ -1204,7 +1205,7 @@ int perf_event__synthesize_stat_round(struct perf_tool *tool,
 				      perf_event__handler_t process,
 				      struct machine *machine)
 {
-	struct stat_round_event event;
+	struct perf_record_stat_round event;
 
 	event.header.type = PERF_RECORD_STAT_ROUND;
 	event.header.size = sizeof(event);
@@ -1217,7 +1218,7 @@ int perf_event__synthesize_stat_round(struct perf_tool *tool,
 }
 
 void perf_event__read_stat_config(struct perf_stat_config *config,
-				  struct stat_config_event *event)
+				  struct perf_record_stat_config *event)
 {
 	unsigned i;
 
@@ -1234,7 +1235,7 @@ void perf_event__read_stat_config(struct perf_stat_config *config,
 		CASE(INTERVAL,  interval)
 #undef CASE
 		default:
-			pr_warning("unknown stat config term %" PRIu64 "\n",
+			pr_warning("unknown stat config term %" PRI_lu64 "\n",
 				   event->data[i].tag);
 		}
 	}
@@ -1448,7 +1449,7 @@ int perf_event__process_exit(struct perf_tool *tool __maybe_unused,
 
 size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp)
 {
-	return fprintf(fp, " offset: %#"PRIx64" size: %#"PRIx64" flags: %#"PRIx64" [%s%s%s]\n",
+	return fprintf(fp, " offset: %#"PRI_lx64" size: %#"PRI_lx64" flags: %#"PRI_lx64" [%s%s%s]\n",
 		       event->aux.aux_offset, event->aux.aux_size,
 		       event->aux.flags,
 		       event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "",
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 429a3fe52d6c..4c0c5232bd41 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -22,9 +22,11 @@
  */
 #define PRI_lu64 "l" PRIu64
 #define PRI_lx64 "l" PRIx64
+#define PRI_ld64 "l" PRId64
 #else
 #define PRI_lu64 PRIu64
 #define PRI_lx64 PRIx64
+#define PRI_ld64 PRId64
 #endif
 
 #define PERF_SAMPLE_MASK				\
@@ -144,36 +146,6 @@ struct perf_sample {
 	 PERF_MEM_S(LOCK, NA) |\
 	 PERF_MEM_S(TLB, NA))
 
-struct build_id_event {
-	struct perf_event_header header;
-	pid_t			 pid;
-	u8			 build_id[PERF_ALIGN(BUILD_ID_SIZE, sizeof(u64))];
-	char			 filename[];
-};
-
-enum perf_user_event_type { /* above any possible kernel type */
-	PERF_RECORD_USER_TYPE_START		= 64,
-	PERF_RECORD_HEADER_ATTR			= 64,
-	PERF_RECORD_HEADER_EVENT_TYPE		= 65, /* deprecated */
-	PERF_RECORD_HEADER_TRACING_DATA		= 66,
-	PERF_RECORD_HEADER_BUILD_ID		= 67,
-	PERF_RECORD_FINISHED_ROUND		= 68,
-	PERF_RECORD_ID_INDEX			= 69,
-	PERF_RECORD_AUXTRACE_INFO		= 70,
-	PERF_RECORD_AUXTRACE			= 71,
-	PERF_RECORD_AUXTRACE_ERROR		= 72,
-	PERF_RECORD_THREAD_MAP			= 73,
-	PERF_RECORD_CPU_MAP			= 74,
-	PERF_RECORD_STAT_CONFIG			= 75,
-	PERF_RECORD_STAT			= 76,
-	PERF_RECORD_STAT_ROUND			= 77,
-	PERF_RECORD_EVENT_UPDATE		= 78,
-	PERF_RECORD_TIME_CONV			= 79,
-	PERF_RECORD_HEADER_FEATURE		= 80,
-	PERF_RECORD_COMPRESSED			= 81,
-	PERF_RECORD_HEADER_MAX
-};
-
 enum auxtrace_error_type {
 	PERF_AUXTRACE_ERROR_ITRACE  = 1,
 	PERF_AUXTRACE_ERROR_MAX
@@ -338,252 +310,10 @@ struct events_stats {
 };
 
 enum {
-	PERF_CPU_MAP__CPUS = 0,
-	PERF_CPU_MAP__MASK = 1,
-};
-
-struct cpu_map_entries {
-	u16	nr;
-	u16	cpu[];
-};
-
-struct cpu_map_mask {
-	u16	nr;
-	u16	long_size;
-	unsigned long mask[];
-};
-
-struct cpu_map_data {
-	u16	type;
-	char	data[];
-};
-
-struct cpu_map_event {
-	struct perf_event_header	header;
-	struct cpu_map_data		data;
-};
-
-struct attr_event {
-	struct perf_event_header header;
-	struct perf_event_attr attr;
-	u64 id[];
-};
-
-enum {
-	PERF_EVENT_UPDATE__UNIT  = 0,
-	PERF_EVENT_UPDATE__SCALE = 1,
-	PERF_EVENT_UPDATE__NAME  = 2,
-	PERF_EVENT_UPDATE__CPUS  = 3,
-};
-
-struct event_update_event_cpus {
-	struct cpu_map_data cpus;
-};
-
-struct event_update_event_scale {
-	double scale;
-};
-
-struct event_update_event {
-	struct perf_event_header header;
-	u64 type;
-	u64 id;
-
-	char data[];
-};
-
-#define MAX_EVENT_NAME 64
-
-struct perf_trace_event_type {
-	u64	event_id;
-	char	name[MAX_EVENT_NAME];
-};
-
-struct event_type_event {
-	struct perf_event_header header;
-	struct perf_trace_event_type event_type;
-};
-
-struct tracing_data_event {
-	struct perf_event_header header;
-	u32 size;
-};
-
-struct id_index_entry {
-	u64 id;
-	u64 idx;
-	u64 cpu;
-	u64 tid;
-};
-
-struct id_index_event {
-	struct perf_event_header header;
-	u64 nr;
-	struct id_index_entry entries[0];
-};
-
-struct auxtrace_info_event {
-	struct perf_event_header header;
-	u32 type;
-	u32 reserved__; /* For alignment */
-	u64 priv[];
-};
-
-struct auxtrace_event {
-	struct perf_event_header header;
-	u64 size;
-	u64 offset;
-	u64 reference;
-	u32 idx;
-	u32 tid;
-	u32 cpu;
-	u32 reserved__; /* For alignment */
-};
-
-#define MAX_AUXTRACE_ERROR_MSG 64
-
-struct auxtrace_error_event {
-	struct perf_event_header header;
-	u32 type;
-	u32 code;
-	u32 cpu;
-	u32 pid;
-	u32 tid;
-	u32 fmt;
-	u64 ip;
-	u64 time;
-	char msg[MAX_AUXTRACE_ERROR_MSG];
-};
-
-struct aux_event {
-	struct perf_event_header header;
-	u64	aux_offset;
-	u64	aux_size;
-	u64	flags;
-};
-
-struct itrace_start_event {
-	struct perf_event_header header;
-	u32 pid, tid;
-};
-
-struct context_switch_event {
-	struct perf_event_header header;
-	u32 next_prev_pid;
-	u32 next_prev_tid;
-};
-
-struct thread_map_event_entry {
-	u64	pid;
-	char	comm[16];
-};
-
-struct thread_map_event {
-	struct perf_event_header	header;
-	u64				nr;
-	struct thread_map_event_entry	entries[];
-};
-
-enum {
-	PERF_STAT_CONFIG_TERM__AGGR_MODE	= 0,
-	PERF_STAT_CONFIG_TERM__INTERVAL		= 1,
-	PERF_STAT_CONFIG_TERM__SCALE		= 2,
-	PERF_STAT_CONFIG_TERM__MAX		= 3,
-};
-
-struct stat_config_event_entry {
-	u64	tag;
-	u64	val;
-};
-
-struct stat_config_event {
-	struct perf_event_header	header;
-	u64				nr;
-	struct stat_config_event_entry	data[];
-};
-
-struct stat_event {
-	struct perf_event_header	header;
-
-	u64	id;
-	u32	cpu;
-	u32	thread;
-
-	union {
-		struct {
-			u64 val;
-			u64 ena;
-			u64 run;
-		};
-		u64 values[3];
-	};
-};
-
-enum {
 	PERF_STAT_ROUND_TYPE__INTERVAL	= 0,
 	PERF_STAT_ROUND_TYPE__FINAL	= 1,
 };
 
-struct stat_round_event {
-	struct perf_event_header	header;
-	u64				type;
-	u64				time;
-};
-
-struct time_conv_event {
-	struct perf_event_header header;
-	u64 time_shift;
-	u64 time_mult;
-	u64 time_zero;
-};
-
-struct feature_event {
-	struct perf_event_header 	header;
-	u64				feat_id;
-	char				data[];
-};
-
-struct compressed_event {
-	struct perf_event_header	header;
-	char				data[];
-};
-
-union perf_event {
-	struct perf_event_header	header;
-	struct perf_record_mmap		mmap;
-	struct perf_record_mmap2	mmap2;
-	struct perf_record_comm		comm;
-	struct perf_record_namespaces	namespaces;
-	struct perf_record_fork		fork;
-	struct perf_record_lost		lost;
-	struct perf_record_lost_samples	lost_samples;
-	struct perf_record_read		read;
-	struct perf_record_throttle	throttle;
-	struct perf_record_sample	sample;
-	struct perf_record_bpf_event	bpf;
-	struct perf_record_ksymbol	ksymbol;
-	struct attr_event		attr;
-	struct event_update_event	event_update;
-	struct event_type_event		event_type;
-	struct tracing_data_event	tracing_data;
-	struct build_id_event		build_id;
-	struct id_index_event		id_index;
-	struct auxtrace_info_event	auxtrace_info;
-	struct auxtrace_event		auxtrace;
-	struct auxtrace_error_event	auxtrace_error;
-	struct aux_event		aux;
-	struct itrace_start_event	itrace_start;
-	struct context_switch_event	context_switch;
-	struct thread_map_event		thread_map;
-	struct cpu_map_event		cpu_map;
-	struct stat_config_event	stat_config;
-	struct stat_event		stat;
-	struct stat_round_event		stat_round;
-	struct time_conv_event		time_conv;
-	struct feature_event		feat;
-	struct compressed_event		pack;
-};
-
 void perf_event__print_totals(void);
 
 struct perf_tool;
@@ -621,7 +351,7 @@ int perf_event__synthesize_stat_config(struct perf_tool *tool,
 				       perf_event__handler_t process,
 				       struct machine *machine);
 void perf_event__read_stat_config(struct perf_stat_config *config,
-				  struct stat_config_event *event);
+				  struct perf_record_stat_config *event);
 int perf_event__synthesize_stat(struct perf_tool *tool,
 				u32 cpu, u32 thread, u64 id,
 				struct perf_counts_values *count,
@@ -758,7 +488,7 @@ int kallsyms__get_function_start(const char *kallsyms_filename,
 				 const char *symbol_name, u64 *addr);
 
 void *cpu_map_data__alloc(struct perf_cpu_map *map, size_t *size, u16 *type, int *max);
-void  cpu_map_data__synthesize(struct cpu_map_data *data, struct perf_cpu_map *map,
+void  cpu_map_data__synthesize(struct perf_record_cpu_map_data *data, struct perf_cpu_map *map,
 			       u16 type, int max);
 
 void event_attr_init(struct perf_event_attr *attr);
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 47bc54111f57..253dd8dd0e12 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -16,10 +16,12 @@
 #include "evsel.h"
 #include "debug.h"
 #include "units.h"
+#include "util.h"
 #include "asm/bug.h"
 #include "bpf-event.h"
 #include <signal.h>
 #include <unistd.h>
+#include <sched.h>
 
 #include "parse-events.h"
 #include <subcmd/parse-options.h>
@@ -1823,6 +1825,14 @@ static void *perf_evlist__poll_thread(void *arg)
 	struct evlist *evlist = arg;
 	bool draining = false;
 	int i, done = 0;
+	/*
+	 * In order to read symbols from other namespaces perf to needs to call
+	 * setns(2).  This isn't permitted if the struct_fs has multiple users.
+	 * unshare(2) the fs so that we may continue to setns into namespaces
+	 * that we're observing when, for instance, reading the build-ids at
+	 * the end of a 'perf record' session.
+	 */
+	unshare(CLONE_FS);
 
 	while (!done) {
 		bool got_data = false;
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index e31ddcc058f2..16796de7af3f 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -13,7 +13,6 @@
 #include "event.h"
 #include "evsel.h"
 #include "mmap.h"
-#include "util.h"
 #include <signal.h>
 #include <unistd.h>
 
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index fa676355559e..dbc04e1053a9 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -40,6 +40,7 @@
 #include "stat.h"
 #include "string2.h"
 #include "memswap.h"
+#include "util.h"
 #include "util/parse-branch-options.h"
 #include <internal/xyarray.h>
 
@@ -282,7 +283,7 @@ struct evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx)
 
 static bool perf_event_can_profile_kernel(void)
 {
-	return geteuid() == 0 || perf_event_paranoid() == -1;
+	return perf_event_paranoid_check(1);
 }
 
 struct evsel *perf_evsel__new_cycles(bool precise)
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 1f2965a07bef..0a842d9eff22 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -42,6 +42,7 @@
 #include "tool.h"
 #include "time-utils.h"
 #include "units.h"
+#include "util.h"
 #include "cputopo.h"
 #include "bpf-event.h"
 
@@ -1877,7 +1878,7 @@ static void print_mem_topology(struct feat_fd *ff, FILE *fp)
 	}
 }
 
-static int __event_process_build_id(struct build_id_event *bev,
+static int __event_process_build_id(struct perf_record_header_build_id *bev,
 				    char *filename,
 				    struct perf_session *session)
 {
@@ -1946,7 +1947,7 @@ static int perf_header__read_build_ids_abi_quirk(struct perf_header *header,
 		u8			   build_id[PERF_ALIGN(BUILD_ID_SIZE, sizeof(u64))];
 		char			   filename[0];
 	} old_bev;
-	struct build_id_event bev;
+	struct perf_record_header_build_id bev;
 	char filename[PATH_MAX];
 	u64 limit = offset + size;
 
@@ -1987,7 +1988,7 @@ static int perf_header__read_build_ids(struct perf_header *header,
 				       int input, u64 offset, u64 size)
 {
 	struct perf_session *session = container_of(header, struct perf_session, header);
-	struct build_id_event bev;
+	struct perf_record_header_build_id bev;
 	char filename[PATH_MAX];
 	u64 limit = offset + size, orig_offset = offset;
 	int err = -1;
@@ -2009,7 +2010,7 @@ static int perf_header__read_build_ids(struct perf_header *header,
 		 *
 		 * "perf: 'perf kvm' tool for monitoring guest performance from host"
 		 *
-		 * Added a field to struct build_id_event that broke the file
+		 * Added a field to struct perf_record_header_build_id that broke the file
 		 * format.
 		 *
 		 * Since the kernel build-id is the first entry, process the
@@ -3677,7 +3678,7 @@ int perf_event__synthesize_features(struct perf_tool *tool,
 {
 	struct perf_header *header = &session->header;
 	struct feat_fd ff;
-	struct feature_event *fe;
+	struct perf_record_header_feature *fe;
 	size_t sz, sz_hdr;
 	int feat, ret;
 
@@ -3740,7 +3741,7 @@ int perf_event__process_feature(struct perf_session *session,
 {
 	struct perf_tool *tool = session->tool;
 	struct feat_fd ff = { .fd = 0 };
-	struct feature_event *fe = (struct feature_event *)event;
+	struct perf_record_header_feature *fe = (struct perf_record_header_feature *)event;
 	int type = fe->header.type;
 	u64 feat = fe->feat_id;
 
@@ -3777,10 +3778,10 @@ int perf_event__process_feature(struct perf_session *session,
 	return 0;
 }
 
-static struct event_update_event *
+static struct perf_record_event_update *
 event_update_event__new(size_t size, u64 type, u64 id)
 {
-	struct event_update_event *ev;
+	struct perf_record_event_update *ev;
 
 	size += sizeof(*ev);
 	size  = PERF_ALIGN(size, sizeof(u64));
@@ -3800,7 +3801,7 @@ perf_event__synthesize_event_update_unit(struct perf_tool *tool,
 					 struct evsel *evsel,
 					 perf_event__handler_t process)
 {
-	struct event_update_event *ev;
+	struct perf_record_event_update *ev;
 	size_t size = strlen(evsel->unit);
 	int err;
 
@@ -3819,15 +3820,15 @@ perf_event__synthesize_event_update_scale(struct perf_tool *tool,
 					  struct evsel *evsel,
 					  perf_event__handler_t process)
 {
-	struct event_update_event *ev;
-	struct event_update_event_scale *ev_data;
+	struct perf_record_event_update *ev;
+	struct perf_record_event_update_scale *ev_data;
 	int err;
 
 	ev = event_update_event__new(sizeof(*ev_data), PERF_EVENT_UPDATE__SCALE, evsel->id[0]);
 	if (ev == NULL)
 		return -ENOMEM;
 
-	ev_data = (struct event_update_event_scale *) ev->data;
+	ev_data = (struct perf_record_event_update_scale *)ev->data;
 	ev_data->scale = evsel->scale;
 	err = process(tool, (union perf_event*) ev, NULL, NULL);
 	free(ev);
@@ -3839,7 +3840,7 @@ perf_event__synthesize_event_update_name(struct perf_tool *tool,
 					 struct evsel *evsel,
 					 perf_event__handler_t process)
 {
-	struct event_update_event *ev;
+	struct perf_record_event_update *ev;
 	size_t len = strlen(evsel->name);
 	int err;
 
@@ -3858,8 +3859,8 @@ perf_event__synthesize_event_update_cpus(struct perf_tool *tool,
 					struct evsel *evsel,
 					perf_event__handler_t process)
 {
-	size_t size = sizeof(struct event_update_event);
-	struct event_update_event *ev;
+	size_t size = sizeof(struct perf_record_event_update);
+	struct perf_record_event_update *ev;
 	int max, err;
 	u16 type;
 
@@ -3875,7 +3876,7 @@ perf_event__synthesize_event_update_cpus(struct perf_tool *tool,
 	ev->type = PERF_EVENT_UPDATE__CPUS;
 	ev->id   = evsel->id[0];
 
-	cpu_map_data__synthesize((struct cpu_map_data *) ev->data,
+	cpu_map_data__synthesize((struct perf_record_cpu_map_data *)ev->data,
 				 evsel->core.own_cpus,
 				 type, max);
 
@@ -3886,17 +3887,17 @@ perf_event__synthesize_event_update_cpus(struct perf_tool *tool,
 
 size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp)
 {
-	struct event_update_event *ev = &event->event_update;
-	struct event_update_event_scale *ev_scale;
-	struct event_update_event_cpus *ev_cpus;
+	struct perf_record_event_update *ev = &event->event_update;
+	struct perf_record_event_update_scale *ev_scale;
+	struct perf_record_event_update_cpus *ev_cpus;
 	struct perf_cpu_map *map;
 	size_t ret;
 
-	ret = fprintf(fp, "\n... id:    %" PRIu64 "\n", ev->id);
+	ret = fprintf(fp, "\n... id:    %" PRI_lu64 "\n", ev->id);
 
 	switch (ev->type) {
 	case PERF_EVENT_UPDATE__SCALE:
-		ev_scale = (struct event_update_event_scale *) ev->data;
+		ev_scale = (struct perf_record_event_update_scale *)ev->data;
 		ret += fprintf(fp, "... scale: %f\n", ev_scale->scale);
 		break;
 	case PERF_EVENT_UPDATE__UNIT:
@@ -3906,7 +3907,7 @@ size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp)
 		ret += fprintf(fp, "... name:  %s\n", ev->data);
 		break;
 	case PERF_EVENT_UPDATE__CPUS:
-		ev_cpus = (struct event_update_event_cpus *) ev->data;
+		ev_cpus = (struct perf_record_event_update_cpus *)ev->data;
 		ret += fprintf(fp, "... ");
 
 		map = cpu_map__new_data(&ev_cpus->cpus);
@@ -4052,9 +4053,9 @@ int perf_event__process_event_update(struct perf_tool *tool __maybe_unused,
 				     union perf_event *event,
 				     struct evlist **pevlist)
 {
-	struct event_update_event *ev = &event->event_update;
-	struct event_update_event_scale *ev_scale;
-	struct event_update_event_cpus *ev_cpus;
+	struct perf_record_event_update *ev = &event->event_update;
+	struct perf_record_event_update_scale *ev_scale;
+	struct perf_record_event_update_cpus *ev_cpus;
 	struct evlist *evlist;
 	struct evsel *evsel;
 	struct perf_cpu_map *map;
@@ -4076,11 +4077,11 @@ int perf_event__process_event_update(struct perf_tool *tool __maybe_unused,
 		evsel->name = strdup(ev->data);
 		break;
 	case PERF_EVENT_UPDATE__SCALE:
-		ev_scale = (struct event_update_event_scale *) ev->data;
+		ev_scale = (struct perf_record_event_update_scale *)ev->data;
 		evsel->scale = ev_scale->scale;
 		break;
 	case PERF_EVENT_UPDATE__CPUS:
-		ev_cpus = (struct event_update_event_cpus *) ev->data;
+		ev_cpus = (struct perf_record_event_update_cpus *)ev->data;
 
 		map = cpu_map__new_data(&ev_cpus->cpus);
 		if (map)
@@ -4152,7 +4153,7 @@ int perf_event__process_tracing_data(struct perf_session *session,
 	char buf[BUFSIZ];
 
 	/* setup for reading amidst mmap */
-	lseek(fd, offset + sizeof(struct tracing_data_event),
+	lseek(fd, offset + sizeof(struct perf_record_header_tracing_data),
 	      SEEK_SET);
 
 	size_read = trace_report(fd, &session->tevent,
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 33702675073c..e0b149673a88 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -2439,7 +2439,7 @@ void hists__match(struct hists *leader, struct hists *other)
 {
 	struct rb_root_cached *root;
 	struct rb_node *nd;
-	struct hist_entry *pos, *pair, *pos_pair, *tmp_pair;
+	struct hist_entry *pos, *pair;
 
 	if (symbol_conf.report_hierarchy) {
 		/* hierarchy report always collapses entries */
@@ -2456,24 +2456,8 @@ void hists__match(struct hists *leader, struct hists *other)
 		pos  = rb_entry(nd, struct hist_entry, rb_node_in);
 		pair = hists__find_entry(other, pos);
 
-		if (pair && list_empty(&pair->pairs.node)) {
-			list_for_each_entry_safe(pos_pair, tmp_pair, &pos->pairs.head, pairs.node) {
-				if (pos_pair->hists == other) {
-					/*
-					 * XXX maybe decayed entries can appear
-					 * here?  but then we would have use
-					 * after free, as decayed entries are
-					 * freed see hists__delete_entry
-					 */
-					BUG_ON(!pos_pair->dummy);
-					list_del_init(&pos_pair->pairs.node);
-					hist_entry__delete(pos_pair);
-					break;
-				}
-			}
-
+		if (pair)
 			hist_entry__add_pair(pair, pos);
-		}
 	}
 }
 
@@ -2558,6 +2542,25 @@ int hists__link(struct hists *leader, struct hists *other)
 	return 0;
 }
 
+int hists__unlink(struct hists *hists)
+{
+	struct rb_root_cached *root;
+	struct rb_node *nd;
+	struct hist_entry *pos;
+
+	if (hists__has(hists, need_collapse))
+		root = &hists->entries_collapsed;
+	else
+		root = hists->entries_in;
+
+	for (nd = rb_first_cached(root); nd; nd = rb_next(nd)) {
+		pos = rb_entry(nd, struct hist_entry, rb_node_in);
+		list_del_init(&pos->pairs.node);
+	}
+
+	return 0;
+}
+
 void hist__account_cycles(struct branch_stack *bs, struct addr_location *al,
 			  struct perf_sample *sample, bool nonany_branch_mode)
 {
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 83d5fc15429c..7b9267ebebeb 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -217,6 +217,7 @@ void hists__calc_col_len(struct hists *hists, struct hist_entry *he);
 
 void hists__match(struct hists *leader, struct hists *other);
 int hists__link(struct hists *leader, struct hists *other);
+int hists__unlink(struct hists *hists);
 
 struct hists_evsel {
 	struct evsel evsel;
diff --git a/tools/perf/util/intel-bts.c b/tools/perf/util/intel-bts.c
index 8dc6408206b9..99dddb63dac1 100644
--- a/tools/perf/util/intel-bts.c
+++ b/tools/perf/util/intel-bts.c
@@ -834,7 +834,7 @@ static const char * const intel_bts_info_fmts[] = {
 	[INTEL_BTS_SNAPSHOT_MODE]	= "  Snapshot mode      %"PRId64"\n",
 };
 
-static void intel_bts_print_info(u64 *arr, int start, int finish)
+static void intel_bts_print_info(__u64 *arr, int start, int finish)
 {
 	int i;
 
@@ -848,12 +848,12 @@ static void intel_bts_print_info(u64 *arr, int start, int finish)
 int intel_bts_process_auxtrace_info(union perf_event *event,
 				    struct perf_session *session)
 {
-	struct auxtrace_info_event *auxtrace_info = &event->auxtrace_info;
+	struct perf_record_auxtrace_info *auxtrace_info = &event->auxtrace_info;
 	size_t min_sz = sizeof(u64) * INTEL_BTS_SNAPSHOT_MODE;
 	struct intel_bts *bts;
 	int err;
 
-	if (auxtrace_info->header.size < sizeof(struct auxtrace_info_event) +
+	if (auxtrace_info->header.size < sizeof(struct perf_record_auxtrace_info) +
 					min_sz)
 		return -EINVAL;
 
diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c
index ea504fa9b623..825a6a3b03a1 100644
--- a/tools/perf/util/intel-pt.c
+++ b/tools/perf/util/intel-pt.c
@@ -3044,7 +3044,7 @@ static const char * const intel_pt_info_fmts[] = {
 	[INTEL_PT_FILTER_STR_LEN]	= "  Filter string len.  %"PRIu64"\n",
 };
 
-static void intel_pt_print_info(u64 *arr, int start, int finish)
+static void intel_pt_print_info(__u64 *arr, int start, int finish)
 {
 	int i;
 
@@ -3063,23 +3063,23 @@ static void intel_pt_print_info_str(const char *name, const char *str)
 	fprintf(stdout, "  %-20s%s\n", name, str ? str : "");
 }
 
-static bool intel_pt_has(struct auxtrace_info_event *auxtrace_info, int pos)
+static bool intel_pt_has(struct perf_record_auxtrace_info *auxtrace_info, int pos)
 {
 	return auxtrace_info->header.size >=
-		sizeof(struct auxtrace_info_event) + (sizeof(u64) * (pos + 1));
+		sizeof(struct perf_record_auxtrace_info) + (sizeof(u64) * (pos + 1));
 }
 
 int intel_pt_process_auxtrace_info(union perf_event *event,
 				   struct perf_session *session)
 {
-	struct auxtrace_info_event *auxtrace_info = &event->auxtrace_info;
+	struct perf_record_auxtrace_info *auxtrace_info = &event->auxtrace_info;
 	size_t min_sz = sizeof(u64) * INTEL_PT_PER_CPU_MMAPS;
 	struct intel_pt *pt;
 	void *info_end;
-	u64 *info;
+	__u64 *info;
 	int err;
 
-	if (auxtrace_info->header.size < sizeof(struct auxtrace_info_event) +
+	if (auxtrace_info->header.size < sizeof(struct perf_record_auxtrace_info) +
 					min_sz)
 		return -EINVAL;
 
diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c
index 59974e901232..11479a7ad1c7 100644
--- a/tools/perf/util/python.c
+++ b/tools/perf/util/python.c
@@ -431,8 +431,8 @@ static char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch ev
 static PyMemberDef pyrf_context_switch_event__members[] = {
 	sample_members
 	member_def(perf_event_header, type, T_UINT, "event type"),
-	member_def(context_switch_event, next_prev_pid, T_UINT, "next/prev pid"),
-	member_def(context_switch_event, next_prev_tid, T_UINT, "next/prev tid"),
+	member_def(perf_record_switch, next_prev_pid, T_UINT, "next/prev pid"),
+	member_def(perf_record_switch, next_prev_tid, T_UINT, "next/prev tid"),
 	{ .name = NULL, },
 };
 
diff --git a/tools/perf/util/s390-cpumsf.c b/tools/perf/util/s390-cpumsf.c
index d078ae8353c8..4f6c1465998f 100644
--- a/tools/perf/util/s390-cpumsf.c
+++ b/tools/perf/util/s390-cpumsf.c
@@ -1109,11 +1109,11 @@ static int s390_cpumsf__config(const char *var, const char *value, void *cb)
 int s390_cpumsf_process_auxtrace_info(union perf_event *event,
 				      struct perf_session *session)
 {
-	struct auxtrace_info_event *auxtrace_info = &event->auxtrace_info;
+	struct perf_record_auxtrace_info *auxtrace_info = &event->auxtrace_info;
 	struct s390_cpumsf *sf;
 	int err;
 
-	if (auxtrace_info->header.size < sizeof(struct auxtrace_info_event))
+	if (auxtrace_info->header.size < sizeof(struct perf_record_auxtrace_info))
 		return -EINVAL;
 
 	sf = zalloc(sizeof(struct s390_cpumsf));
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 5786e9c807c5..7350b0dfbc1e 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -29,6 +29,7 @@
 #include "thread-stack.h"
 #include "sample-raw.h"
 #include "stat.h"
+#include "util.h"
 #include "arch/common.h"
 
 #ifdef HAVE_ZSTD_SUPPORT
@@ -63,8 +64,8 @@ static int perf_session__process_compressed_event(struct perf_session *session,
 		decomp->size = decomp_last_rem;
 	}
 
-	src = (void *)event + sizeof(struct compressed_event);
-	src_size = event->pack.header.size - sizeof(struct compressed_event);
+	src = (void *)event + sizeof(struct perf_record_compressed);
+	src_size = event->pack.header.size - sizeof(struct perf_record_compressed);
 
 	decomp_size = zstd_decompress_stream(&(session->zstd_data), src, src_size,
 				&(decomp->data[decomp_last_rem]), decomp_len - decomp_last_rem);
@@ -835,9 +836,9 @@ static void perf_event__thread_map_swap(union perf_event *event,
 static void perf_event__cpu_map_swap(union perf_event *event,
 				     bool sample_id_all __maybe_unused)
 {
-	struct cpu_map_data *data = &event->cpu_map.data;
+	struct perf_record_cpu_map_data *data = &event->cpu_map.data;
 	struct cpu_map_entries *cpus;
-	struct cpu_map_mask *mask;
+	struct perf_record_record_cpu_map *mask;
 	unsigned i;
 
 	data->type = bswap_64(data->type);
@@ -852,7 +853,7 @@ static void perf_event__cpu_map_swap(union perf_event *event,
 			cpus->cpu[i] = bswap_16(cpus->cpu[i]);
 		break;
 	case PERF_CPU_MAP__MASK:
-		mask = (struct cpu_map_mask *) data->data;
+		mask = (struct perf_record_record_cpu_map *)data->data;
 
 		mask->nr = bswap_16(mask->nr);
 		mask->long_size = bswap_16(mask->long_size);
@@ -2375,10 +2376,10 @@ int perf_event__process_id_index(struct perf_session *session,
 				 union perf_event *event)
 {
 	struct evlist *evlist = session->evlist;
-	struct id_index_event *ie = &event->id_index;
+	struct perf_record_id_index *ie = &event->id_index;
 	size_t i, nr, max_nr;
 
-	max_nr = (ie->header.size - sizeof(struct id_index_event)) /
+	max_nr = (ie->header.size - sizeof(struct perf_record_id_index)) /
 		 sizeof(struct id_index_entry);
 	nr = ie->nr;
 	if (nr > max_nr)
@@ -2392,10 +2393,10 @@ int perf_event__process_id_index(struct perf_session *session,
 		struct perf_sample_id *sid;
 
 		if (dump_trace) {
-			fprintf(stdout,	" ... id: %"PRIu64, e->id);
-			fprintf(stdout,	"  idx: %"PRIu64, e->idx);
-			fprintf(stdout,	"  cpu: %"PRId64, e->cpu);
-			fprintf(stdout,	"  tid: %"PRId64"\n", e->tid);
+			fprintf(stdout,	" ... id: %"PRI_lu64, e->id);
+			fprintf(stdout,	"  idx: %"PRI_lu64, e->idx);
+			fprintf(stdout,	"  cpu: %"PRI_ld64, e->cpu);
+			fprintf(stdout,	"  tid: %"PRI_ld64"\n", e->tid);
 		}
 
 		sid = perf_evlist__id2sid(evlist, e->id);
@@ -2420,14 +2421,14 @@ int perf_event__synthesize_id_index(struct perf_tool *tool,
 
 	pr_debug2("Synthesizing id index\n");
 
-	max_nr = (UINT16_MAX - sizeof(struct id_index_event)) /
+	max_nr = (UINT16_MAX - sizeof(struct perf_record_id_index)) /
 		 sizeof(struct id_index_entry);
 
 	evlist__for_each_entry(evlist, evsel)
 		nr += evsel->ids;
 
 	n = nr > max_nr ? max_nr : nr;
-	sz = sizeof(struct id_index_event) + n * sizeof(struct id_index_entry);
+	sz = sizeof(struct perf_record_id_index) + n * sizeof(struct id_index_entry);
 	ev = zalloc(sz);
 	if (!ev)
 		return -ENOMEM;
@@ -2467,7 +2468,7 @@ int perf_event__synthesize_id_index(struct perf_tool *tool,
 		}
 	}
 
-	sz = sizeof(struct id_index_event) + nr * sizeof(struct id_index_entry);
+	sz = sizeof(struct perf_record_id_index) + nr * sizeof(struct id_index_entry);
 	ev->id_index.header.size = sz;
 	ev->id_index.nr = nr;
 
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index 79e97d17ea04..b7aa076ab6fd 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -28,7 +28,7 @@ struct perf_session {
 	struct itrace_synth_opts *itrace_synth_opts;
 	struct list_head	auxtrace_index;
 	struct trace_event	tevent;
-	struct time_conv_event	time_conv;
+	struct perf_record_time_conv	time_conv;
 	bool			repipe;
 	bool			one_mmap;
 	void			*one_mmap_addr;
diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c
index f985336b3a22..66f8808e57d3 100644
--- a/tools/perf/util/stat.c
+++ b/tools/perf/util/stat.c
@@ -382,7 +382,7 @@ int perf_event__process_stat_event(struct perf_session *session,
 				   union perf_event *event)
 {
 	struct perf_counts_values count;
-	struct stat_event *st = &event->stat;
+	struct perf_record_stat *st = &event->stat;
 	struct evsel *counter;
 
 	count.val = st->val;
@@ -402,12 +402,12 @@ int perf_event__process_stat_event(struct perf_session *session,
 
 size_t perf_event__fprintf_stat(union perf_event *event, FILE *fp)
 {
-	struct stat_event *st = (struct stat_event *) event;
+	struct perf_record_stat *st = (struct perf_record_stat *)event;
 	size_t ret;
 
-	ret  = fprintf(fp, "\n... id %" PRIu64 ", cpu %d, thread %d\n",
+	ret  = fprintf(fp, "\n... id %" PRI_lu64 ", cpu %d, thread %d\n",
 		       st->id, st->cpu, st->thread);
-	ret += fprintf(fp, "... value %" PRIu64 ", enabled %" PRIu64 ", running %" PRIu64 "\n",
+	ret += fprintf(fp, "... value %" PRI_lu64 ", enabled %" PRI_lu64 ", running %" PRI_lu64 "\n",
 		       st->val, st->ena, st->run);
 
 	return ret;
@@ -415,10 +415,10 @@ size_t perf_event__fprintf_stat(union perf_event *event, FILE *fp)
 
 size_t perf_event__fprintf_stat_round(union perf_event *event, FILE *fp)
 {
-	struct stat_round_event *rd = (struct stat_round_event *)event;
+	struct perf_record_stat_round *rd = (struct perf_record_stat_round *)event;
 	size_t ret;
 
-	ret = fprintf(fp, "\n... time %" PRIu64 ", type %s\n", rd->time,
+	ret = fprintf(fp, "\n... time %" PRI_lu64 ", type %s\n", rd->time,
 		      rd->type == PERF_STAT_ROUND_TYPE__FINAL ? "FINAL" : "INTERVAL");
 
 	return ret;
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 4efde7879474..035f2e75728c 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -4,6 +4,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
+#include <linux/capability.h>
 #include <linux/kernel.h>
 #include <linux/mman.h>
 #include <linux/time64.h>
@@ -15,8 +16,10 @@
 #include <inttypes.h>
 #include "annotate.h"
 #include "build-id.h"
+#include "cap.h"
 #include "util.h"
 #include "debug.h"
+#include "event.h"
 #include "machine.h"
 #include "map.h"
 #include "symbol.h"
@@ -2195,13 +2198,19 @@ static bool symbol__read_kptr_restrict(void)
 		char line[8];
 
 		if (fgets(line, sizeof(line), fp) != NULL)
-			value = ((geteuid() != 0) || (getuid() != 0)) ?
-					(atoi(line) != 0) :
-					(atoi(line) == 2);
+			value = perf_cap__capable(CAP_SYSLOG) ?
+					(atoi(line) >= 2) :
+					(atoi(line) != 0);
 
 		fclose(fp);
 	}
 
+	/* Per kernel/kallsyms.c:
+	 * we also restrict when perf_event_paranoid > 1 w/o CAP_SYSLOG
+	 */
+	if (perf_event_paranoid() > 1 && !perf_cap__capable(CAP_SYSLOG))
+		value = true;
+
 	return value;
 }
 
diff --git a/tools/perf/util/thread_map.c b/tools/perf/util/thread_map.c
index 3e64525bf604..c9bfe4696943 100644
--- a/tools/perf/util/thread_map.c
+++ b/tools/perf/util/thread_map.c
@@ -369,7 +369,7 @@ void thread_map__read_comms(struct perf_thread_map *threads)
 }
 
 static void thread_map__copy_event(struct perf_thread_map *threads,
-				   struct thread_map_event *event)
+				   struct perf_record_thread_map *event)
 {
 	unsigned i;
 
@@ -383,7 +383,7 @@ static void thread_map__copy_event(struct perf_thread_map *threads,
 	refcount_set(&threads->refcnt, 1);
 }
 
-struct perf_thread_map *thread_map__new_event(struct thread_map_event *event)
+struct perf_thread_map *thread_map__new_event(struct perf_record_thread_map *event)
 {
 	struct perf_thread_map *threads;
 
diff --git a/tools/perf/util/thread_map.h b/tools/perf/util/thread_map.h
index ca165fdf6cb0..3bb860a32b8e 100644
--- a/tools/perf/util/thread_map.h
+++ b/tools/perf/util/thread_map.h
@@ -8,7 +8,7 @@
 #include <internal/threadmap.h>
 #include <perf/threadmap.h>
 
-struct thread_map_event;
+struct perf_record_thread_map;
 
 struct perf_thread_map *thread_map__new_dummy(void);
 struct perf_thread_map *thread_map__new_by_pid(pid_t pid);
@@ -16,7 +16,7 @@ struct perf_thread_map *thread_map__new_by_tid(pid_t tid);
 struct perf_thread_map *thread_map__new_by_uid(uid_t uid);
 struct perf_thread_map *thread_map__new_all_cpus(void);
 struct perf_thread_map *thread_map__new(pid_t pid, pid_t tid, uid_t uid);
-struct perf_thread_map *thread_map__new_event(struct thread_map_event *event);
+struct perf_thread_map *thread_map__new_event(struct perf_record_thread_map *event);
 
 struct perf_thread_map *thread_map__new_str(const char *pid,
 		const char *tid, uid_t uid, bool all_threads);
diff --git a/tools/perf/util/util-cxx.h b/tools/perf/util/util-cxx.h
deleted file mode 100644
index 80a99e458d4e..000000000000
--- a/tools/perf/util/util-cxx.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Support C++ source use utilities defined in util.h
- */
-
-#ifndef PERF_UTIL_UTIL_CXX_H
-#define PERF_UTIL_UTIL_CXX_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/*
- * Now 'new' is the only C++ keyword found in util.h:
- * in tools/include/linux/rbtree.h
- *
- * Other keywords, like class and delete, should be
- * redefined if necessary.
- */
-#define new _new
-#include "util.h"
-#undef new
-
-#ifdef __cplusplus
-}
-#endif
-#endif