Merge tag 'perf-core-for-mingo-4.21-20181217' 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:

- Introduce 'perf record --aio' to use asynchronous IO trace writing, disabled
  by default (Alexey Budankov)

- Add fallback routines to be used in places where we don't have the CPU mode
  (kernel/userspace/hypervisor) and thus must first fallback lookups looking
  at all map trees when trying to resolve symbols (Adrian Hunter)

- Fix error with config term "pt=0", where we should just force "pt=1" and
  warn the user about the former being nonsensical (Adrian Hunter)

- Fix 'perf test' entry where we expect 'sleep' to come in a PERF_RECORD_COMM
  but instead we get 'coreutils' when sleep is provided by some versions of
  the 'coreutils' package (Adrian Hunter)

- Introduce 'perf top --kallsyms file' to match 'perf report --kallsyms', useful
  when dealing with BPF, where symbol resolution happens via kallsyms, not via
  the default vmlinux ELF symtabs (Arnaldo Carvalho de Melo)

- Support 'srccode' output field in 'perf script' (Andi Kleen)

- Introduce basic 'perf annotation' support for the ARC architecture (Eugeniy Paltsev)

- Compute and display average IPC and IPC coverage per symbol in 'perf annotate' and
  'perf report' (Jin Yao)

- Make 'perf top' use ordered_events and process histograms in a separate thread (Jiri Olsa)

- Make 'perf trace' use ordered_events (Jiri Olsa)

- Add support for ETMv3 and PTMv1.1 decoding in cs-etm (Mathieu Poirier)

- Support for ARM A32/T32 instruction sets in CoreSight trace (cs-etm) (Robert Walker)

- Fix 'perf stat' shadow stats for clock events. (Ravi Bangoria)

- Remove needless rb_tree extra indirection from map__find() (Eric Saint-Etienne)

- Fix CSV mode column output for non-cgroup events in 'perf stat' (Stephane Eranian)

- Add sanity check to libtraceevent's is_timestamp_in_us() (Tzvetomir Stoyanov)

- Use ERR_CAST instead of ERR_PTR(PTR_ERR()) (Wen Yang)

- Fix Load_Miss_Real_Latency on SKL/SKX intel vendor event files (Andi Kleen)

- strncpy() fixes triggered by new warnings on gcc 8.2.0 (Arnaldo Carvalho de Melo)

- Handle tracefs syscall tracepoint older 'nr' field in 'perf trace', that got
  renamed to '__syscall_nr' to work in older kernels (Arnaldo Carvalho de Melo)

- Give better hint about devel package for libssl (Arnaldo Carvalho de Melo)

- Fix the 'perf trace' build in architectures lacking explicit mmap.h file (Arnaldo Carvalho de Melo)

- Remove extra rb_tree traversal indirection from map__find() (Eric Saint-Etienne)

- Disable breakpoint tests for 32-bit ARM (Florian Fainelli)

- Fix typos all over the place, mostly in comments, but also in some debug
  messages and JSON files (Ingo Molnar)

- Allow specifying proc-map-timeout in config file (Mark Drayton)

- Fix mmap_flags table generation script (Sihyeon Jang)

- Fix 'size' parameter to snprintf in the 'perf config' code (Sihyeon Jang)

- More libtraceevent renames to make it a proper library (Tzvetomir Stoyanov)

- Implement new API tep_get_ref() in libtraceevent (Tzvetomir Stoyanov)

- Added support for pkg-config in libtraceevent (Tzvetomir Stoyanov)

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

1 files changed, 38 insertions, 6 deletions

diff --git a/tools/perf/util/ordered-events.c b/tools/perf/util/ordered-events.c
index 1904e7f6ec84..897589507d97 100644
--- a/tools/perf/util/ordered-events.c
+++ b/tools/perf/util/ordered-events.c
@@ -219,13 +219,12 @@ int ordered_events__queue(struct ordered_events *oe, union perf_event *event,
 	return 0;
 }
 
-static int __ordered_events__flush(struct ordered_events *oe)
+static int do_flush(struct ordered_events *oe, bool show_progress)
 {
 	struct list_head *head = &oe->events;
 	struct ordered_event *tmp, *iter;
 	u64 limit = oe->next_flush;
 	u64 last_ts = oe->last ? oe->last->timestamp : 0ULL;
-	bool show_progress = limit == ULLONG_MAX;
 	struct ui_progress prog;
 	int ret;
 
@@ -263,7 +262,8 @@ static int __ordered_events__flush(struct ordered_events *oe)
 	return 0;
 }
 
-int ordered_events__flush(struct ordered_events *oe, enum oe_flush how)
+static int __ordered_events__flush(struct ordered_events *oe, enum oe_flush how,
+				   u64 timestamp)
 {
 	static const char * const str[] = {
 		"NONE",
@@ -272,12 +272,16 @@ int ordered_events__flush(struct ordered_events *oe, enum oe_flush how)
 		"HALF ",
 	};
 	int err;
+	bool show_progress = false;
 
 	if (oe->nr_events == 0)
 		return 0;
 
 	switch (how) {
 	case OE_FLUSH__FINAL:
+		show_progress = true;
+		__fallthrough;
+	case OE_FLUSH__TOP:
 		oe->next_flush = ULLONG_MAX;
 		break;
 
@@ -298,6 +302,11 @@ int ordered_events__flush(struct ordered_events *oe, enum oe_flush how)
 		break;
 	}
 
+	case OE_FLUSH__TIME:
+		oe->next_flush = timestamp;
+		show_progress = false;
+		break;
+
 	case OE_FLUSH__ROUND:
 	case OE_FLUSH__NONE:
 	default:
@@ -308,7 +317,7 @@ int ordered_events__flush(struct ordered_events *oe, enum oe_flush how)
 		   str[how], oe->nr_events);
 	pr_oe_time(oe->max_timestamp, "max_timestamp\n");
 
-	err = __ordered_events__flush(oe);
+	err = do_flush(oe, show_progress);
 
 	if (!err) {
 		if (how == OE_FLUSH__ROUND)
@@ -324,7 +333,29 @@ int ordered_events__flush(struct ordered_events *oe, enum oe_flush how)
 	return err;
 }
 
-void ordered_events__init(struct ordered_events *oe, ordered_events__deliver_t deliver)
+int ordered_events__flush(struct ordered_events *oe, enum oe_flush how)
+{
+	return __ordered_events__flush(oe, how, 0);
+}
+
+int ordered_events__flush_time(struct ordered_events *oe, u64 timestamp)
+{
+	return __ordered_events__flush(oe, OE_FLUSH__TIME, timestamp);
+}
+
+u64 ordered_events__first_time(struct ordered_events *oe)
+{
+	struct ordered_event *event;
+
+	if (list_empty(&oe->events))
+		return 0;
+
+	event = list_first_entry(&oe->events, struct ordered_event, list);
+	return event->timestamp;
+}
+
+void ordered_events__init(struct ordered_events *oe, ordered_events__deliver_t deliver,
+			  void *data)
 {
 	INIT_LIST_HEAD(&oe->events);
 	INIT_LIST_HEAD(&oe->cache);
@@ -332,6 +363,7 @@ void ordered_events__init(struct ordered_events *oe, ordered_events__deliver_t d
 	oe->max_alloc_size = (u64) -1;
 	oe->cur_alloc_size = 0;
 	oe->deliver	   = deliver;
+	oe->data	   = data;
 }
 
 static void
@@ -375,5 +407,5 @@ void ordered_events__reinit(struct ordered_events *oe)
 
 	ordered_events__free(oe);
 	memset(oe, '\0', sizeof(*oe));
-	ordered_events__init(oe, old_deliver);
+	ordered_events__init(oe, old_deliver, oe->data);
 }