#include <byteswap.h>
#include <unistd.h>
#include <sys/types.h>
+#include <sys/mman.h>
#include "session.h"
#include "sort.h"
{
struct stat input_stat;
+ if (!strcmp(self->filename, "-")) {
+ self->fd_pipe = true;
+ self->fd = STDIN_FILENO;
+
+ if (perf_header__read(self, self->fd) < 0)
+ pr_err("incompatible file format");
+
+ return 0;
+ }
+
self->fd = open(self->filename, O_RDONLY);
if (self->fd < 0) {
pr_err("failed to open file: %s", self->filename);
goto out_close;
}
- if (perf_header__read(&self->header, self->fd) < 0) {
+ if (perf_header__read(self, self->fd) < 0) {
pr_err("incompatible file format");
goto out_close;
}
return -1;
}
-struct perf_session *perf_session__new(const char *filename, int mode, bool force)
+void perf_session__update_sample_type(struct perf_session *self)
+{
+ self->sample_type = perf_header__sample_type(&self->header);
+}
+
+int perf_session__create_kernel_maps(struct perf_session *self)
+{
+ int ret = machine__create_kernel_maps(&self->host_machine);
+
+ if (ret >= 0)
+ ret = machines__create_guest_kernel_maps(&self->machines);
+ return ret;
+}
+
+struct perf_session *perf_session__new(const char *filename, int mode, bool force, bool repipe)
{
size_t len = filename ? strlen(filename) + 1 : 0;
struct perf_session *self = zalloc(sizeof(*self) + len);
memcpy(self->filename, filename, len);
self->threads = RB_ROOT;
- self->stats_by_id = RB_ROOT;
+ self->hists_tree = RB_ROOT;
self->last_match = NULL;
self->mmap_window = 32;
self->cwd = NULL;
self->cwdlen = 0;
- self->unknown_events = 0;
- map_groups__init(&self->kmaps);
+ self->machines = RB_ROOT;
+ self->repipe = repipe;
+ INIT_LIST_HEAD(&self->ordered_samples.samples_head);
+ machine__init(&self->host_machine, "", HOST_KERNEL_ID);
if (mode == O_RDONLY) {
if (perf_session__open(self, force) < 0)
goto out_delete;
}
- self->sample_type = perf_header__sample_type(&self->header);
+ perf_session__update_sample_type(self);
out:
return self;
out_free:
continue;
}
+ al.filtered = false;
thread__find_addr_location(thread, self, cpumode,
- MAP__FUNCTION, ip, &al, NULL);
+ MAP__FUNCTION, thread->pid, ip, &al, NULL);
if (al.sym != NULL) {
if (sort__has_parent && !*parent &&
symbol__match_parent_regex(al.sym))
return 0;
}
+static int process_finished_round_stub(event_t *event __used,
+ struct perf_session *session __used,
+ struct perf_event_ops *ops __used)
+{
+ dump_printf(": unhandled!\n");
+ return 0;
+}
+
+static int process_finished_round(event_t *event,
+ struct perf_session *session,
+ struct perf_event_ops *ops);
+
static void perf_event_ops__fill_defaults(struct perf_event_ops *handler)
{
if (handler->sample == NULL)
handler->throttle = process_event_stub;
if (handler->unthrottle == NULL)
handler->unthrottle = process_event_stub;
-}
-
-static const char *event__name[] = {
- [0] = "TOTAL",
- [PERF_RECORD_MMAP] = "MMAP",
- [PERF_RECORD_LOST] = "LOST",
- [PERF_RECORD_COMM] = "COMM",
- [PERF_RECORD_EXIT] = "EXIT",
- [PERF_RECORD_THROTTLE] = "THROTTLE",
- [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE",
- [PERF_RECORD_FORK] = "FORK",
- [PERF_RECORD_READ] = "READ",
- [PERF_RECORD_SAMPLE] = "SAMPLE",
-};
-
-unsigned long event__total[PERF_RECORD_MAX];
-
-void event__print_totals(void)
-{
- int i;
- for (i = 0; i < PERF_RECORD_MAX; ++i)
- pr_info("%10s events: %10ld\n",
- event__name[i], event__total[i]);
+ if (handler->attr == NULL)
+ handler->attr = process_event_stub;
+ if (handler->event_type == NULL)
+ handler->event_type = process_event_stub;
+ if (handler->tracing_data == NULL)
+ handler->tracing_data = process_event_stub;
+ if (handler->build_id == NULL)
+ handler->build_id = process_event_stub;
+ if (handler->finished_round == NULL) {
+ if (handler->ordered_samples)
+ handler->finished_round = process_finished_round;
+ else
+ handler->finished_round = process_finished_round_stub;
+ }
}
void mem_bswap_64(void *src, int byte_size)
self->read.id = bswap_64(self->read.id);
}
+static void event__attr_swap(event_t *self)
+{
+ size_t size;
+
+ self->attr.attr.type = bswap_32(self->attr.attr.type);
+ self->attr.attr.size = bswap_32(self->attr.attr.size);
+ self->attr.attr.config = bswap_64(self->attr.attr.config);
+ self->attr.attr.sample_period = bswap_64(self->attr.attr.sample_period);
+ self->attr.attr.sample_type = bswap_64(self->attr.attr.sample_type);
+ self->attr.attr.read_format = bswap_64(self->attr.attr.read_format);
+ self->attr.attr.wakeup_events = bswap_32(self->attr.attr.wakeup_events);
+ self->attr.attr.bp_type = bswap_32(self->attr.attr.bp_type);
+ self->attr.attr.bp_addr = bswap_64(self->attr.attr.bp_addr);
+ self->attr.attr.bp_len = bswap_64(self->attr.attr.bp_len);
+
+ size = self->header.size;
+ size -= (void *)&self->attr.id - (void *)self;
+ mem_bswap_64(self->attr.id, size);
+}
+
+static void event__event_type_swap(event_t *self)
+{
+ self->event_type.event_type.event_id =
+ bswap_64(self->event_type.event_type.event_id);
+}
+
+static void event__tracing_data_swap(event_t *self)
+{
+ self->tracing_data.size = bswap_32(self->tracing_data.size);
+}
+
typedef void (*event__swap_op)(event_t *self);
static event__swap_op event__swap_ops[] = {
[PERF_RECORD_LOST] = event__all64_swap,
[PERF_RECORD_READ] = event__read_swap,
[PERF_RECORD_SAMPLE] = event__all64_swap,
- [PERF_RECORD_MAX] = NULL,
+ [PERF_RECORD_HEADER_ATTR] = event__attr_swap,
+ [PERF_RECORD_HEADER_EVENT_TYPE] = event__event_type_swap,
+ [PERF_RECORD_HEADER_TRACING_DATA] = event__tracing_data_swap,
+ [PERF_RECORD_HEADER_BUILD_ID] = NULL,
+ [PERF_RECORD_HEADER_MAX] = NULL,
+};
+
+struct sample_queue {
+ u64 timestamp;
+ struct sample_event *event;
+ struct list_head list;
};
+static void flush_sample_queue(struct perf_session *s,
+ struct perf_event_ops *ops)
+{
+ struct list_head *head = &s->ordered_samples.samples_head;
+ u64 limit = s->ordered_samples.next_flush;
+ struct sample_queue *tmp, *iter;
+
+ if (!ops->ordered_samples || !limit)
+ return;
+
+ list_for_each_entry_safe(iter, tmp, head, list) {
+ if (iter->timestamp > limit)
+ return;
+
+ if (iter == s->ordered_samples.last_inserted)
+ s->ordered_samples.last_inserted = NULL;
+
+ ops->sample((event_t *)iter->event, s);
+
+ s->ordered_samples.last_flush = iter->timestamp;
+ list_del(&iter->list);
+ free(iter->event);
+ free(iter);
+ }
+}
+
+/*
+ * When perf record finishes a pass on every buffers, it records this pseudo
+ * event.
+ * We record the max timestamp t found in the pass n.
+ * Assuming these timestamps are monotonic across cpus, we know that if
+ * a buffer still has events with timestamps below t, they will be all
+ * available and then read in the pass n + 1.
+ * Hence when we start to read the pass n + 2, we can safely flush every
+ * events with timestamps below t.
+ *
+ * ============ PASS n =================
+ * CPU 0 | CPU 1
+ * |
+ * cnt1 timestamps | cnt2 timestamps
+ * 1 | 2
+ * 2 | 3
+ * - | 4 <--- max recorded
+ *
+ * ============ PASS n + 1 ==============
+ * CPU 0 | CPU 1
+ * |
+ * cnt1 timestamps | cnt2 timestamps
+ * 3 | 5
+ * 4 | 6
+ * 5 | 7 <---- max recorded
+ *
+ * Flush every events below timestamp 4
+ *
+ * ============ PASS n + 2 ==============
+ * CPU 0 | CPU 1
+ * |
+ * cnt1 timestamps | cnt2 timestamps
+ * 6 | 8
+ * 7 | 9
+ * - | 10
+ *
+ * Flush every events below timestamp 7
+ * etc...
+ */
+static int process_finished_round(event_t *event __used,
+ struct perf_session *session,
+ struct perf_event_ops *ops)
+{
+ flush_sample_queue(session, ops);
+ session->ordered_samples.next_flush = session->ordered_samples.max_timestamp;
+
+ return 0;
+}
+
+static void __queue_sample_end(struct sample_queue *new, struct list_head *head)
+{
+ struct sample_queue *iter;
+
+ list_for_each_entry_reverse(iter, head, list) {
+ if (iter->timestamp < new->timestamp) {
+ list_add(&new->list, &iter->list);
+ return;
+ }
+ }
+
+ list_add(&new->list, head);
+}
+
+static void __queue_sample_before(struct sample_queue *new,
+ struct sample_queue *iter,
+ struct list_head *head)
+{
+ list_for_each_entry_continue_reverse(iter, head, list) {
+ if (iter->timestamp < new->timestamp) {
+ list_add(&new->list, &iter->list);
+ return;
+ }
+ }
+
+ list_add(&new->list, head);
+}
+
+static void __queue_sample_after(struct sample_queue *new,
+ struct sample_queue *iter,
+ struct list_head *head)
+{
+ list_for_each_entry_continue(iter, head, list) {
+ if (iter->timestamp > new->timestamp) {
+ list_add_tail(&new->list, &iter->list);
+ return;
+ }
+ }
+ list_add_tail(&new->list, head);
+}
+
+/* The queue is ordered by time */
+static void __queue_sample_event(struct sample_queue *new,
+ struct perf_session *s)
+{
+ struct sample_queue *last_inserted = s->ordered_samples.last_inserted;
+ struct list_head *head = &s->ordered_samples.samples_head;
+
+
+ if (!last_inserted) {
+ __queue_sample_end(new, head);
+ return;
+ }
+
+ /*
+ * Most of the time the current event has a timestamp
+ * very close to the last event inserted, unless we just switched
+ * to another event buffer. Having a sorting based on a list and
+ * on the last inserted event that is close to the current one is
+ * probably more efficient than an rbtree based sorting.
+ */
+ if (last_inserted->timestamp >= new->timestamp)
+ __queue_sample_before(new, last_inserted, head);
+ else
+ __queue_sample_after(new, last_inserted, head);
+}
+
+static int queue_sample_event(event_t *event, struct sample_data *data,
+ struct perf_session *s)
+{
+ u64 timestamp = data->time;
+ struct sample_queue *new;
+
+
+ if (timestamp < s->ordered_samples.last_flush) {
+ printf("Warning: Timestamp below last timeslice flush\n");
+ return -EINVAL;
+ }
+
+ new = malloc(sizeof(*new));
+ if (!new)
+ return -ENOMEM;
+
+ new->timestamp = timestamp;
+
+ new->event = malloc(event->header.size);
+ if (!new->event) {
+ free(new);
+ return -ENOMEM;
+ }
+
+ memcpy(new->event, event, event->header.size);
+
+ __queue_sample_event(new, s);
+ s->ordered_samples.last_inserted = new;
+
+ if (new->timestamp > s->ordered_samples.max_timestamp)
+ s->ordered_samples.max_timestamp = new->timestamp;
+
+ return 0;
+}
+
+static int perf_session__process_sample(event_t *event, struct perf_session *s,
+ struct perf_event_ops *ops)
+{
+ struct sample_data data;
+
+ if (!ops->ordered_samples)
+ return ops->sample(event, s);
+
+ bzero(&data, sizeof(struct sample_data));
+ event__parse_sample(event, s->sample_type, &data);
+
+ queue_sample_event(event, &data, s);
+
+ return 0;
+}
+
static int perf_session__process_event(struct perf_session *self,
event_t *event,
struct perf_event_ops *ops,
{
trace_event(event);
- if (event->header.type < PERF_RECORD_MAX) {
+ if (event->header.type < PERF_RECORD_HEADER_MAX) {
dump_printf("%#Lx [%#x]: PERF_RECORD_%s",
offset + head, event->header.size,
event__name[event->header.type]);
- ++event__total[0];
- ++event__total[event->header.type];
+ hists__inc_nr_events(&self->hists, event->header.type);
}
if (self->header.needs_swap && event__swap_ops[event->header.type])
switch (event->header.type) {
case PERF_RECORD_SAMPLE:
- return ops->sample(event, self);
+ return perf_session__process_sample(event, self, ops);
case PERF_RECORD_MMAP:
return ops->mmap(event, self);
case PERF_RECORD_COMM:
return ops->throttle(event, self);
case PERF_RECORD_UNTHROTTLE:
return ops->unthrottle(event, self);
+ case PERF_RECORD_HEADER_ATTR:
+ return ops->attr(event, self);
+ case PERF_RECORD_HEADER_EVENT_TYPE:
+ return ops->event_type(event, self);
+ case PERF_RECORD_HEADER_TRACING_DATA:
+ /* setup for reading amidst mmap */
+ lseek(self->fd, offset + head, SEEK_SET);
+ return ops->tracing_data(event, self);
+ case PERF_RECORD_HEADER_BUILD_ID:
+ return ops->build_id(event, self);
+ case PERF_RECORD_FINISHED_ROUND:
+ return ops->finished_round(event, self, ops);
default:
- self->unknown_events++;
+ ++self->hists.stats.nr_unknown_events;
return -1;
}
}
self->size = bswap_16(self->size);
}
-int perf_header__read_build_ids(struct perf_header *self,
- int input, u64 offset, u64 size)
+static struct thread *perf_session__register_idle_thread(struct perf_session *self)
{
- struct build_id_event bev;
- char filename[PATH_MAX];
- u64 limit = offset + size;
- int err = -1;
-
- while (offset < limit) {
- struct dso *dso;
- ssize_t len;
- struct list_head *head = &dsos__user;
+ struct thread *thread = perf_session__findnew(self, 0);
- if (read(input, &bev, sizeof(bev)) != sizeof(bev))
- goto out;
+ if (thread == NULL || thread__set_comm(thread, "swapper")) {
+ pr_err("problem inserting idle task.\n");
+ thread = NULL;
+ }
- if (self->needs_swap)
- perf_event_header__bswap(&bev.header);
+ return thread;
+}
- len = bev.header.size - sizeof(bev);
- if (read(input, filename, len) != len)
- goto out;
+int do_read(int fd, void *buf, size_t size)
+{
+ void *buf_start = buf;
- if (bev.header.misc & PERF_RECORD_MISC_KERNEL)
- head = &dsos__kernel;
+ while (size) {
+ int ret = read(fd, buf, size);
- dso = __dsos__findnew(head, filename);
- if (dso != NULL) {
- dso__set_build_id(dso, &bev.build_id);
- if (head == &dsos__kernel && filename[0] == '[')
- dso->kernel = 1;
- }
+ if (ret <= 0)
+ return ret;
- offset += bev.header.size;
+ size -= ret;
+ buf += ret;
}
- err = 0;
-out:
- return err;
+
+ return buf - buf_start;
}
-static struct thread *perf_session__register_idle_thread(struct perf_session *self)
+#define session_done() (*(volatile int *)(&session_done))
+volatile int session_done;
+
+static int __perf_session__process_pipe_events(struct perf_session *self,
+ struct perf_event_ops *ops)
{
- struct thread *thread = perf_session__findnew(self, 0);
+ event_t event;
+ uint32_t size;
+ int skip = 0;
+ u64 head;
+ int err;
+ void *p;
- if (thread == NULL || thread__set_comm(thread, "swapper")) {
- pr_err("problem inserting idle task.\n");
- thread = NULL;
+ perf_event_ops__fill_defaults(ops);
+
+ head = 0;
+more:
+ err = do_read(self->fd, &event, sizeof(struct perf_event_header));
+ if (err <= 0) {
+ if (err == 0)
+ goto done;
+
+ pr_err("failed to read event header\n");
+ goto out_err;
}
- return thread;
+ if (self->header.needs_swap)
+ perf_event_header__bswap(&event.header);
+
+ size = event.header.size;
+ if (size == 0)
+ size = 8;
+
+ p = &event;
+ p += sizeof(struct perf_event_header);
+
+ if (size - sizeof(struct perf_event_header)) {
+ err = do_read(self->fd, p,
+ size - sizeof(struct perf_event_header));
+ if (err <= 0) {
+ if (err == 0) {
+ pr_err("unexpected end of event stream\n");
+ goto done;
+ }
+
+ pr_err("failed to read event data\n");
+ goto out_err;
+ }
+ }
+
+ if (size == 0 ||
+ (skip = perf_session__process_event(self, &event, ops,
+ 0, head)) < 0) {
+ dump_printf("%#Lx [%#x]: skipping unknown header type: %d\n",
+ head, event.header.size, event.header.type);
+ /*
+ * assume we lost track of the stream, check alignment, and
+ * increment a single u64 in the hope to catch on again 'soon'.
+ */
+ if (unlikely(head & 7))
+ head &= ~7ULL;
+
+ size = 8;
+ }
+
+ head += size;
+
+ dump_printf("\n%#Lx [%#x]: event: %d\n",
+ head, event.header.size, event.header.type);
+
+ if (skip > 0)
+ head += skip;
+
+ if (!session_done())
+ goto more;
+done:
+ err = 0;
+out_err:
+ return err;
}
int __perf_session__process_events(struct perf_session *self,
goto more;
done:
err = 0;
+ /* do the final flush for ordered samples */
+ self->ordered_samples.next_flush = ULLONG_MAX;
+ flush_sample_queue(self, ops);
out_err:
ui_progress__delete(progress);
return err;
self->cwdlen = strlen(self->cwd);
}
- err = __perf_session__process_events(self, self->header.data_offset,
- self->header.data_size,
- self->size, ops);
+ if (!self->fd_pipe)
+ err = __perf_session__process_events(self,
+ self->header.data_offset,
+ self->header.data_size,
+ self->size, ops);
+ else
+ err = __perf_session__process_pipe_events(self, ops);
out_err:
return err;
}
return true;
}
-int perf_session__set_kallsyms_ref_reloc_sym(struct perf_session *self,
+int perf_session__set_kallsyms_ref_reloc_sym(struct map **maps,
const char *symbol_name,
u64 addr)
{
char *bracket;
enum map_type i;
+ struct ref_reloc_sym *ref;
- self->ref_reloc_sym.name = strdup(symbol_name);
- if (self->ref_reloc_sym.name == NULL)
+ ref = zalloc(sizeof(struct ref_reloc_sym));
+ if (ref == NULL)
return -ENOMEM;
- bracket = strchr(self->ref_reloc_sym.name, ']');
+ ref->name = strdup(symbol_name);
+ if (ref->name == NULL) {
+ free(ref);
+ return -ENOMEM;
+ }
+
+ bracket = strchr(ref->name, ']');
if (bracket)
*bracket = '\0';
- self->ref_reloc_sym.addr = addr;
+ ref->addr = addr;
for (i = 0; i < MAP__NR_TYPES; ++i) {
- struct kmap *kmap = map__kmap(self->vmlinux_maps[i]);
- kmap->ref_reloc_sym = &self->ref_reloc_sym;
+ struct kmap *kmap = map__kmap(maps[i]);
+ kmap->ref_reloc_sym = ref;
}
return 0;
}
+
+size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp)
+{
+ return __dsos__fprintf(&self->host_machine.kernel_dsos, fp) +
+ __dsos__fprintf(&self->host_machine.user_dsos, fp) +
+ machines__fprintf_dsos(&self->machines, fp);
+}
+
+size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, FILE *fp,
+ bool with_hits)
+{
+ size_t ret = machine__fprintf_dsos_buildid(&self->host_machine, fp, with_hits);
+ return ret + machines__fprintf_dsos_buildid(&self->machines, fp, with_hits);
+}
git.openpandora.org / pandora-kernel.git / blobdiff