No need for an extra "data_map" file since the routines there operate mainly on a perf_session instance. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1261957026-15580-3-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>tirimbino
Arnaldo Carvalho de Melo
15 years ago
committed by
Ingo Molnar
parent
3912f2abc9
commit
06aae59003
@ -1,252 +0,0 @@ |
||||
#include "symbol.h" |
||||
#include "util.h" |
||||
#include "debug.h" |
||||
#include "thread.h" |
||||
#include "session.h" |
||||
|
||||
static int process_event_stub(event_t *event __used, |
||||
struct perf_session *session __used) |
||||
{ |
||||
dump_printf(": unhandled!\n"); |
||||
return 0; |
||||
} |
||||
|
||||
static void perf_event_ops__fill_defaults(struct perf_event_ops *handler) |
||||
{ |
||||
if (!handler->process_sample_event) |
||||
handler->process_sample_event = process_event_stub; |
||||
if (!handler->process_mmap_event) |
||||
handler->process_mmap_event = process_event_stub; |
||||
if (!handler->process_comm_event) |
||||
handler->process_comm_event = process_event_stub; |
||||
if (!handler->process_fork_event) |
||||
handler->process_fork_event = process_event_stub; |
||||
if (!handler->process_exit_event) |
||||
handler->process_exit_event = process_event_stub; |
||||
if (!handler->process_lost_event) |
||||
handler->process_lost_event = process_event_stub; |
||||
if (!handler->process_read_event) |
||||
handler->process_read_event = process_event_stub; |
||||
if (!handler->process_throttle_event) |
||||
handler->process_throttle_event = process_event_stub; |
||||
if (!handler->process_unthrottle_event) |
||||
handler->process_unthrottle_event = 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]); |
||||
} |
||||
|
||||
static int process_event(event_t *event, struct perf_session *session, |
||||
struct perf_event_ops *ops, |
||||
unsigned long offset, unsigned long head) |
||||
{ |
||||
trace_event(event); |
||||
|
||||
if (event->header.type < PERF_RECORD_MAX) { |
||||
dump_printf("%p [%p]: PERF_RECORD_%s", |
||||
(void *)(offset + head), |
||||
(void *)(long)(event->header.size), |
||||
event__name[event->header.type]); |
||||
++event__total[0]; |
||||
++event__total[event->header.type]; |
||||
} |
||||
|
||||
switch (event->header.type) { |
||||
case PERF_RECORD_SAMPLE: |
||||
return ops->process_sample_event(event, session); |
||||
case PERF_RECORD_MMAP: |
||||
return ops->process_mmap_event(event, session); |
||||
case PERF_RECORD_COMM: |
||||
return ops->process_comm_event(event, session); |
||||
case PERF_RECORD_FORK: |
||||
return ops->process_fork_event(event, session); |
||||
case PERF_RECORD_EXIT: |
||||
return ops->process_exit_event(event, session); |
||||
case PERF_RECORD_LOST: |
||||
return ops->process_lost_event(event, session); |
||||
case PERF_RECORD_READ: |
||||
return ops->process_read_event(event, session); |
||||
case PERF_RECORD_THROTTLE: |
||||
return ops->process_throttle_event(event, session); |
||||
case PERF_RECORD_UNTHROTTLE: |
||||
return ops->process_unthrottle_event(event, session); |
||||
default: |
||||
ops->total_unknown++; |
||||
return -1; |
||||
} |
||||
} |
||||
|
||||
int perf_header__read_build_ids(int input, u64 offset, u64 size) |
||||
{ |
||||
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; |
||||
|
||||
if (read(input, &bev, sizeof(bev)) != sizeof(bev)) |
||||
goto out; |
||||
|
||||
len = bev.header.size - sizeof(bev); |
||||
if (read(input, filename, len) != len) |
||||
goto out; |
||||
|
||||
dso = dsos__findnew(filename); |
||||
if (dso != NULL) |
||||
dso__set_build_id(dso, &bev.build_id); |
||||
|
||||
offset += bev.header.size; |
||||
} |
||||
err = 0; |
||||
out: |
||||
return err; |
||||
} |
||||
|
||||
static struct thread *perf_session__register_idle_thread(struct perf_session *self) |
||||
{ |
||||
struct thread *thread = perf_session__findnew(self, 0); |
||||
|
||||
if (!thread || thread__set_comm(thread, "swapper")) { |
||||
pr_err("problem inserting idle task.\n"); |
||||
thread = NULL; |
||||
} |
||||
|
||||
return thread; |
||||
} |
||||
|
||||
int perf_session__process_events(struct perf_session *self, |
||||
struct perf_event_ops *ops) |
||||
{ |
||||
int err; |
||||
unsigned long head, shift; |
||||
unsigned long offset = 0; |
||||
size_t page_size; |
||||
event_t *event; |
||||
uint32_t size; |
||||
char *buf; |
||||
|
||||
if (perf_session__register_idle_thread(self) == NULL) |
||||
return -ENOMEM; |
||||
|
||||
perf_event_ops__fill_defaults(ops); |
||||
|
||||
page_size = getpagesize(); |
||||
|
||||
head = self->header.data_offset; |
||||
self->sample_type = perf_header__sample_type(&self->header); |
||||
|
||||
err = -EINVAL; |
||||
if (ops->sample_type_check && ops->sample_type_check(self) < 0) |
||||
goto out_err; |
||||
|
||||
if (!ops->full_paths) { |
||||
char bf[PATH_MAX]; |
||||
|
||||
if (getcwd(bf, sizeof(bf)) == NULL) { |
||||
err = -errno; |
||||
out_getcwd_err: |
||||
pr_err("failed to get the current directory\n"); |
||||
goto out_err; |
||||
} |
||||
self->cwd = strdup(bf); |
||||
if (self->cwd == NULL) { |
||||
err = -ENOMEM; |
||||
goto out_getcwd_err; |
||||
} |
||||
self->cwdlen = strlen(self->cwd); |
||||
} |
||||
|
||||
shift = page_size * (head / page_size); |
||||
offset += shift; |
||||
head -= shift; |
||||
|
||||
remap: |
||||
buf = mmap(NULL, page_size * self->mmap_window, PROT_READ, |
||||
MAP_SHARED, self->fd, offset); |
||||
if (buf == MAP_FAILED) { |
||||
pr_err("failed to mmap file\n"); |
||||
err = -errno; |
||||
goto out_err; |
||||
} |
||||
|
||||
more: |
||||
event = (event_t *)(buf + head); |
||||
|
||||
size = event->header.size; |
||||
if (!size) |
||||
size = 8; |
||||
|
||||
if (head + event->header.size >= page_size * self->mmap_window) { |
||||
int munmap_ret; |
||||
|
||||
shift = page_size * (head / page_size); |
||||
|
||||
munmap_ret = munmap(buf, page_size * self->mmap_window); |
||||
assert(munmap_ret == 0); |
||||
|
||||
offset += shift; |
||||
head -= shift; |
||||
goto remap; |
||||
} |
||||
|
||||
size = event->header.size; |
||||
|
||||
dump_printf("\n%p [%p]: event: %d\n", |
||||
(void *)(offset + head), |
||||
(void *)(long)event->header.size, |
||||
event->header.type); |
||||
|
||||
if (!size || process_event(event, self, ops, offset, head) < 0) { |
||||
|
||||
dump_printf("%p [%p]: skipping unknown header type: %d\n", |
||||
(void *)(offset + head), |
||||
(void *)(long)(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; |
||||
|
||||
if (offset + head >= self->header.data_offset + self->header.data_size) |
||||
goto done; |
||||
|
||||
if (offset + head < self->size) |
||||
goto more; |
||||
|
||||
done: |
||||
err = 0; |
||||
out_err: |
||||
return err; |
||||
} |
||||
Loading…
Reference in new issue