mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 18:14:07 +08:00
2292083f59
Print path and name of a data file into raw dump (-D) <file_offset>@<path/file>: 0x2226a@perf.data [0x30]: event: 9 or 0x15cc36@perf.data/data.7 [0x30]: event: 9 Reviewed-by: Riccardo Mancini <rickyman7@gmail.com> Signed-off-by: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com> Tested-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Riccardo Mancini <rickyman7@gmail.com> Acked-by: Andi Kleen <ak@linux.intel.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Antonov <alexander.antonov@linux.intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Budankov <abudankov@huawei.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/e8378fd4910c10751b001be880705653989283c2.1642440724.git.alexey.v.bayduraev@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
418 lines
9.7 KiB
C
418 lines
9.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <errno.h>
|
|
#include <inttypes.h>
|
|
#include <linux/list.h>
|
|
#include <linux/compiler.h>
|
|
#include <linux/string.h>
|
|
#include "ordered-events.h"
|
|
#include "session.h"
|
|
#include "asm/bug.h"
|
|
#include "debug.h"
|
|
#include "ui/progress.h"
|
|
|
|
#define pr_N(n, fmt, ...) \
|
|
eprintf(n, debug_ordered_events, fmt, ##__VA_ARGS__)
|
|
|
|
#define pr(fmt, ...) pr_N(1, pr_fmt(fmt), ##__VA_ARGS__)
|
|
|
|
static void queue_event(struct ordered_events *oe, struct ordered_event *new)
|
|
{
|
|
struct ordered_event *last = oe->last;
|
|
u64 timestamp = new->timestamp;
|
|
struct list_head *p;
|
|
|
|
++oe->nr_events;
|
|
oe->last = new;
|
|
|
|
pr_oe_time2(timestamp, "queue_event nr_events %u\n", oe->nr_events);
|
|
|
|
if (!last) {
|
|
list_add(&new->list, &oe->events);
|
|
oe->max_timestamp = timestamp;
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* last event might point to some random place in the list as it's
|
|
* the last queued event. We expect that the new event is close to
|
|
* this.
|
|
*/
|
|
if (last->timestamp <= timestamp) {
|
|
while (last->timestamp <= timestamp) {
|
|
p = last->list.next;
|
|
if (p == &oe->events) {
|
|
list_add_tail(&new->list, &oe->events);
|
|
oe->max_timestamp = timestamp;
|
|
return;
|
|
}
|
|
last = list_entry(p, struct ordered_event, list);
|
|
}
|
|
list_add_tail(&new->list, &last->list);
|
|
} else {
|
|
while (last->timestamp > timestamp) {
|
|
p = last->list.prev;
|
|
if (p == &oe->events) {
|
|
list_add(&new->list, &oe->events);
|
|
return;
|
|
}
|
|
last = list_entry(p, struct ordered_event, list);
|
|
}
|
|
list_add(&new->list, &last->list);
|
|
}
|
|
}
|
|
|
|
static union perf_event *__dup_event(struct ordered_events *oe,
|
|
union perf_event *event)
|
|
{
|
|
union perf_event *new_event = NULL;
|
|
|
|
if (oe->cur_alloc_size < oe->max_alloc_size) {
|
|
new_event = memdup(event, event->header.size);
|
|
if (new_event)
|
|
oe->cur_alloc_size += event->header.size;
|
|
}
|
|
|
|
return new_event;
|
|
}
|
|
|
|
static union perf_event *dup_event(struct ordered_events *oe,
|
|
union perf_event *event)
|
|
{
|
|
return oe->copy_on_queue ? __dup_event(oe, event) : event;
|
|
}
|
|
|
|
static void __free_dup_event(struct ordered_events *oe, union perf_event *event)
|
|
{
|
|
if (event) {
|
|
oe->cur_alloc_size -= event->header.size;
|
|
free(event);
|
|
}
|
|
}
|
|
|
|
static void free_dup_event(struct ordered_events *oe, union perf_event *event)
|
|
{
|
|
if (oe->copy_on_queue)
|
|
__free_dup_event(oe, event);
|
|
}
|
|
|
|
#define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct ordered_event))
|
|
static struct ordered_event *alloc_event(struct ordered_events *oe,
|
|
union perf_event *event)
|
|
{
|
|
struct list_head *cache = &oe->cache;
|
|
struct ordered_event *new = NULL;
|
|
union perf_event *new_event;
|
|
size_t size;
|
|
|
|
new_event = dup_event(oe, event);
|
|
if (!new_event)
|
|
return NULL;
|
|
|
|
/*
|
|
* We maintain the following scheme of buffers for ordered
|
|
* event allocation:
|
|
*
|
|
* to_free list -> buffer1 (64K)
|
|
* buffer2 (64K)
|
|
* ...
|
|
*
|
|
* Each buffer keeps an array of ordered events objects:
|
|
* buffer -> event[0]
|
|
* event[1]
|
|
* ...
|
|
*
|
|
* Each allocated ordered event is linked to one of
|
|
* following lists:
|
|
* - time ordered list 'events'
|
|
* - list of currently removed events 'cache'
|
|
*
|
|
* Allocation of the ordered event uses the following order
|
|
* to get the memory:
|
|
* - use recently removed object from 'cache' list
|
|
* - use available object in current allocation buffer
|
|
* - allocate new buffer if the current buffer is full
|
|
*
|
|
* Removal of ordered event object moves it from events to
|
|
* the cache list.
|
|
*/
|
|
size = sizeof(*oe->buffer) + MAX_SAMPLE_BUFFER * sizeof(*new);
|
|
|
|
if (!list_empty(cache)) {
|
|
new = list_entry(cache->next, struct ordered_event, list);
|
|
list_del_init(&new->list);
|
|
} else if (oe->buffer) {
|
|
new = &oe->buffer->event[oe->buffer_idx];
|
|
if (++oe->buffer_idx == MAX_SAMPLE_BUFFER)
|
|
oe->buffer = NULL;
|
|
} else if ((oe->cur_alloc_size + size) < oe->max_alloc_size) {
|
|
oe->buffer = malloc(size);
|
|
if (!oe->buffer) {
|
|
free_dup_event(oe, new_event);
|
|
return NULL;
|
|
}
|
|
|
|
pr("alloc size %" PRIu64 "B (+%zu), max %" PRIu64 "B\n",
|
|
oe->cur_alloc_size, size, oe->max_alloc_size);
|
|
|
|
oe->cur_alloc_size += size;
|
|
list_add(&oe->buffer->list, &oe->to_free);
|
|
|
|
oe->buffer_idx = 1;
|
|
new = &oe->buffer->event[0];
|
|
} else {
|
|
pr("allocation limit reached %" PRIu64 "B\n", oe->max_alloc_size);
|
|
return NULL;
|
|
}
|
|
|
|
new->event = new_event;
|
|
return new;
|
|
}
|
|
|
|
static struct ordered_event *
|
|
ordered_events__new_event(struct ordered_events *oe, u64 timestamp,
|
|
union perf_event *event)
|
|
{
|
|
struct ordered_event *new;
|
|
|
|
new = alloc_event(oe, event);
|
|
if (new) {
|
|
new->timestamp = timestamp;
|
|
queue_event(oe, new);
|
|
}
|
|
|
|
return new;
|
|
}
|
|
|
|
void ordered_events__delete(struct ordered_events *oe, struct ordered_event *event)
|
|
{
|
|
list_move(&event->list, &oe->cache);
|
|
oe->nr_events--;
|
|
free_dup_event(oe, event->event);
|
|
event->event = NULL;
|
|
}
|
|
|
|
int ordered_events__queue(struct ordered_events *oe, union perf_event *event,
|
|
u64 timestamp, u64 file_offset, const char *file_path)
|
|
{
|
|
struct ordered_event *oevent;
|
|
|
|
if (!timestamp || timestamp == ~0ULL)
|
|
return -ETIME;
|
|
|
|
if (timestamp < oe->last_flush) {
|
|
pr_oe_time(timestamp, "out of order event\n");
|
|
pr_oe_time(oe->last_flush, "last flush, last_flush_type %d\n",
|
|
oe->last_flush_type);
|
|
|
|
oe->nr_unordered_events++;
|
|
}
|
|
|
|
oevent = ordered_events__new_event(oe, timestamp, event);
|
|
if (!oevent) {
|
|
ordered_events__flush(oe, OE_FLUSH__HALF);
|
|
oevent = ordered_events__new_event(oe, timestamp, event);
|
|
}
|
|
|
|
if (!oevent)
|
|
return -ENOMEM;
|
|
|
|
oevent->file_offset = file_offset;
|
|
oevent->file_path = file_path;
|
|
return 0;
|
|
}
|
|
|
|
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;
|
|
struct ui_progress prog;
|
|
int ret;
|
|
|
|
if (!limit)
|
|
return 0;
|
|
|
|
if (show_progress)
|
|
ui_progress__init(&prog, oe->nr_events, "Processing time ordered events...");
|
|
|
|
list_for_each_entry_safe(iter, tmp, head, list) {
|
|
if (session_done())
|
|
return 0;
|
|
|
|
if (iter->timestamp > limit)
|
|
break;
|
|
ret = oe->deliver(oe, iter);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ordered_events__delete(oe, iter);
|
|
oe->last_flush = iter->timestamp;
|
|
|
|
if (show_progress)
|
|
ui_progress__update(&prog, 1);
|
|
}
|
|
|
|
if (list_empty(head))
|
|
oe->last = NULL;
|
|
else if (last_ts <= limit)
|
|
oe->last = list_entry(head->prev, struct ordered_event, list);
|
|
|
|
if (show_progress)
|
|
ui_progress__finish();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __ordered_events__flush(struct ordered_events *oe, enum oe_flush how,
|
|
u64 timestamp)
|
|
{
|
|
static const char * const str[] = {
|
|
"NONE",
|
|
"FINAL",
|
|
"ROUND",
|
|
"HALF ",
|
|
"TOP ",
|
|
"TIME ",
|
|
};
|
|
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;
|
|
|
|
case OE_FLUSH__HALF:
|
|
{
|
|
struct ordered_event *first, *last;
|
|
struct list_head *head = &oe->events;
|
|
|
|
first = list_entry(head->next, struct ordered_event, list);
|
|
last = oe->last;
|
|
|
|
/* Warn if we are called before any event got allocated. */
|
|
if (WARN_ONCE(!last || list_empty(head), "empty queue"))
|
|
return 0;
|
|
|
|
oe->next_flush = first->timestamp;
|
|
oe->next_flush += (last->timestamp - first->timestamp) / 2;
|
|
break;
|
|
}
|
|
|
|
case OE_FLUSH__TIME:
|
|
oe->next_flush = timestamp;
|
|
show_progress = false;
|
|
break;
|
|
|
|
case OE_FLUSH__ROUND:
|
|
case OE_FLUSH__NONE:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
pr_oe_time(oe->next_flush, "next_flush - ordered_events__flush PRE %s, nr_events %u\n",
|
|
str[how], oe->nr_events);
|
|
pr_oe_time(oe->max_timestamp, "max_timestamp\n");
|
|
|
|
err = do_flush(oe, show_progress);
|
|
|
|
if (!err) {
|
|
if (how == OE_FLUSH__ROUND)
|
|
oe->next_flush = oe->max_timestamp;
|
|
|
|
oe->last_flush_type = how;
|
|
}
|
|
|
|
pr_oe_time(oe->next_flush, "next_flush - ordered_events__flush POST %s, nr_events %u\n",
|
|
str[how], oe->nr_events);
|
|
pr_oe_time(oe->last_flush, "last_flush\n");
|
|
|
|
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);
|
|
}
|
|
|
|
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);
|
|
INIT_LIST_HEAD(&oe->to_free);
|
|
oe->max_alloc_size = (u64) -1;
|
|
oe->cur_alloc_size = 0;
|
|
oe->deliver = deliver;
|
|
oe->data = data;
|
|
}
|
|
|
|
static void
|
|
ordered_events_buffer__free(struct ordered_events_buffer *buffer,
|
|
unsigned int max, struct ordered_events *oe)
|
|
{
|
|
if (oe->copy_on_queue) {
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < max; i++)
|
|
__free_dup_event(oe, buffer->event[i].event);
|
|
}
|
|
|
|
free(buffer);
|
|
}
|
|
|
|
void ordered_events__free(struct ordered_events *oe)
|
|
{
|
|
struct ordered_events_buffer *buffer, *tmp;
|
|
|
|
if (list_empty(&oe->to_free))
|
|
return;
|
|
|
|
/*
|
|
* Current buffer might not have all the events allocated
|
|
* yet, we need to free only allocated ones ...
|
|
*/
|
|
if (oe->buffer) {
|
|
list_del_init(&oe->buffer->list);
|
|
ordered_events_buffer__free(oe->buffer, oe->buffer_idx, oe);
|
|
}
|
|
|
|
/* ... and continue with the rest */
|
|
list_for_each_entry_safe(buffer, tmp, &oe->to_free, list) {
|
|
list_del_init(&buffer->list);
|
|
ordered_events_buffer__free(buffer, MAX_SAMPLE_BUFFER, oe);
|
|
}
|
|
}
|
|
|
|
void ordered_events__reinit(struct ordered_events *oe)
|
|
{
|
|
ordered_events__deliver_t old_deliver = oe->deliver;
|
|
|
|
ordered_events__free(oe);
|
|
memset(oe, '\0', sizeof(*oe));
|
|
ordered_events__init(oe, old_deliver, oe->data);
|
|
}
|