linux/tools/perf/util/ordered-events.h
Adrian Hunter f8bcf1e223 perf ordered_events: Add ordered_events__last_flush_time()
Allow callers to get the ordered_events last flush timestamp.

This is needed in perf inject to obey finished-round ordering when
injecting additional events (e.g. from a guest perf.data file) with
timestamps. Any additional events that have timestamps before the last
flush time must be injected before the corresponding FINISHED_ROUND event.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: kvm@vger.kernel.org
Link: https://lore.kernel.org/r/20220711093218.10967-4-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-20 11:07:30 -03:00

85 lines
2.1 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ORDERED_EVENTS_H
#define __ORDERED_EVENTS_H
#include <linux/types.h>
struct perf_sample;
struct ordered_event {
u64 timestamp;
u64 file_offset;
const char *file_path;
union perf_event *event;
struct list_head list;
};
enum oe_flush {
OE_FLUSH__NONE,
OE_FLUSH__FINAL,
OE_FLUSH__ROUND,
OE_FLUSH__HALF,
OE_FLUSH__TOP,
OE_FLUSH__TIME,
};
struct ordered_events;
typedef int (*ordered_events__deliver_t)(struct ordered_events *oe,
struct ordered_event *event);
struct ordered_events_buffer {
struct list_head list;
struct ordered_event event[];
};
struct ordered_events {
u64 last_flush;
u64 next_flush;
u64 max_timestamp;
u64 max_alloc_size;
u64 cur_alloc_size;
struct list_head events;
struct list_head cache;
struct list_head to_free;
struct ordered_events_buffer *buffer;
struct ordered_event *last;
ordered_events__deliver_t deliver;
int buffer_idx;
unsigned int nr_events;
enum oe_flush last_flush_type;
u32 nr_unordered_events;
bool copy_on_queue;
void *data;
};
int ordered_events__queue(struct ordered_events *oe, union perf_event *event,
u64 timestamp, u64 file_offset, const char *file_path);
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);
void ordered_events__reinit(struct ordered_events *oe);
u64 ordered_events__first_time(struct ordered_events *oe);
static inline
void ordered_events__set_alloc_size(struct ordered_events *oe, u64 size)
{
oe->max_alloc_size = size;
}
static inline
void ordered_events__set_copy_on_queue(struct ordered_events *oe, bool copy)
{
oe->copy_on_queue = copy;
}
static inline u64 ordered_events__last_flush_time(struct ordered_events *oe)
{
return oe->last_flush;
}
#endif /* __ORDERED_EVENTS_H */