[PATCH 72/75] perf ordered_events: Add ordered_events__flush_time interface

Arnaldo Carvalho de Melo
2018-12-06T21:32:11Z

From: Jiri Olsa <jolsa@kernel.org>

Add OE_FLUSH__TIME flush type, to be able to flush only certain amount
of the queue based on the provided timestamp. It will be used in the
following patches.

Link: http://lkml.kernel.org/n/tip-a3na77vemwr1g92lfhlrztg5@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Dmitry Levin <ldv@altlinux.org>
Cc: Eugene Syromiatnikov <esyr@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Luis Cláudio Gonçalves <lclaudio@uudg.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20181205160509.1168-7-jolsa@kernel.org
[ Fix the build on older systems such as centos 5 and 6 where 'time' shadows a global declaration ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/ordered-events.c | 23 +++++++++++++++++++----
tools/perf/util/ordered-events.h | 2 ++
2 files changed, 21 insertions(+), 4 deletions(-)

diff --git a/tools/perf/util/ordered-events.c b/tools/perf/util/ordered-events.c
index c5412db05683..46965643020b 100644
--- a/tools/perf/util/ordered-events.c
+++ b/tools/perf/util/ordered-events.c
@@ -219,8 +219,7 @@ int ordered_events__queue(struct ordered_events *oe, union perf_event *event,
return 0;
}

-static int __ordered_events__flush(struct ordered_events *oe,
- bool show_progress)
+static int do_flush(struct ordered_events *oe, bool show_progress)
{
struct list_head *head = &oe->events;
struct ordered_event *tmp, *iter;
@@ -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",
@@ -302,6 +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:
@@ -312,7 +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, show_progress);
+ err = do_flush(oe, show_progress);

if (!err) {
if (how == OE_FLUSH__ROUND)
@@ -328,6 +333,16 @@ int ordered_events__flush(struct ordered_events *oe, enum oe_flush how)
return err;
}

+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);
+}
+
void ordered_events__init(struct ordered_events *oe, ordered_events__deliver_t deliver,
void *data)
{
diff --git a/tools/perf/util/ordered-events.h b/tools/perf/util/ordered-events.h
index 0c6e26aec0e3..f352af20e167 100644
--- a/tools/perf/util/ordered-events.h
+++ b/tools/perf/util/ordered-events.h
@@ -19,6 +19,7 @@ enum oe_flush {
OE_FLUSH__ROUND,
OE_FLUSH__HALF,
OE_FLUSH__TOP,
+ OE_FLUSH__TIME,
};

struct ordered_events;
@@ -55,6 +56,7 @@ int ordered_events__queue(struct ordered_events *oe, union perf_event *event,
u64 timestamp, u64 file_offset);
void ordered_events__delete(struct ordered_events *oe, struct ordered_event *event);
int ordered_events__flush(struct ordered_events *oe, enum oe_flush how);
+int ordered_events__flush_time(struct ordered_events *oe, u64 timestamp);
void ordered_events__init(struct ordered_events *oe, ordered_events__deliver_t deliver,
void *data);
void ordered_events__free(struct ordered_events *oe);
--
2.19.2