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perf session: Move the event processing routines to session.c
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>
This commit is contained in:
Arnaldo Carvalho de Melo
Ingo Molnar
parent
3912f2abc9
commit
06aae59003
@ -423,7 +423,6 @@ LIB_OBJS += util/trace-event-perl.o
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LIB_OBJS += util/svghelper.o
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LIB_OBJS += util/sort.o
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LIB_OBJS += util/hist.o
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LIB_OBJS += util/data_map.o
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LIB_OBJS += util/probe-event.o
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BUILTIN_OBJS += builtin-annotate.o
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@ -1,252 +0,0 @@
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#include "symbol.h"
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#include "util.h"
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#include "debug.h"
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#include "thread.h"
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#include "session.h"
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static int process_event_stub(event_t *event __used,
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struct perf_session *session __used)
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{
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dump_printf(": unhandled!\n");
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return 0;
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}
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static void perf_event_ops__fill_defaults(struct perf_event_ops *handler)
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{
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if (!handler->process_sample_event)
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handler->process_sample_event = process_event_stub;
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if (!handler->process_mmap_event)
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handler->process_mmap_event = process_event_stub;
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if (!handler->process_comm_event)
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handler->process_comm_event = process_event_stub;
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if (!handler->process_fork_event)
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handler->process_fork_event = process_event_stub;
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if (!handler->process_exit_event)
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handler->process_exit_event = process_event_stub;
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if (!handler->process_lost_event)
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handler->process_lost_event = process_event_stub;
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if (!handler->process_read_event)
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handler->process_read_event = process_event_stub;
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if (!handler->process_throttle_event)
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handler->process_throttle_event = process_event_stub;
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if (!handler->process_unthrottle_event)
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handler->process_unthrottle_event = process_event_stub;
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}
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static const char *event__name[] = {
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[0] = "TOTAL",
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[PERF_RECORD_MMAP] = "MMAP",
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[PERF_RECORD_LOST] = "LOST",
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[PERF_RECORD_COMM] = "COMM",
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[PERF_RECORD_EXIT] = "EXIT",
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[PERF_RECORD_THROTTLE] = "THROTTLE",
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[PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE",
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[PERF_RECORD_FORK] = "FORK",
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[PERF_RECORD_READ] = "READ",
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[PERF_RECORD_SAMPLE] = "SAMPLE",
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};
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unsigned long event__total[PERF_RECORD_MAX];
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void event__print_totals(void)
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{
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int i;
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for (i = 0; i < PERF_RECORD_MAX; ++i)
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pr_info("%10s events: %10ld\n",
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event__name[i], event__total[i]);
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}
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static int process_event(event_t *event, struct perf_session *session,
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struct perf_event_ops *ops,
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unsigned long offset, unsigned long head)
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{
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trace_event(event);
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if (event->header.type < PERF_RECORD_MAX) {
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dump_printf("%p [%p]: PERF_RECORD_%s",
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(void *)(offset + head),
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(void *)(long)(event->header.size),
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event__name[event->header.type]);
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++event__total[0];
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++event__total[event->header.type];
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}
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switch (event->header.type) {
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case PERF_RECORD_SAMPLE:
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return ops->process_sample_event(event, session);
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case PERF_RECORD_MMAP:
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return ops->process_mmap_event(event, session);
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case PERF_RECORD_COMM:
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return ops->process_comm_event(event, session);
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case PERF_RECORD_FORK:
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return ops->process_fork_event(event, session);
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case PERF_RECORD_EXIT:
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return ops->process_exit_event(event, session);
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case PERF_RECORD_LOST:
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return ops->process_lost_event(event, session);
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case PERF_RECORD_READ:
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return ops->process_read_event(event, session);
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case PERF_RECORD_THROTTLE:
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return ops->process_throttle_event(event, session);
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case PERF_RECORD_UNTHROTTLE:
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return ops->process_unthrottle_event(event, session);
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default:
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ops->total_unknown++;
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return -1;
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}
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}
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int perf_header__read_build_ids(int input, u64 offset, u64 size)
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{
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struct build_id_event bev;
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char filename[PATH_MAX];
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u64 limit = offset + size;
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int err = -1;
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while (offset < limit) {
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struct dso *dso;
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ssize_t len;
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if (read(input, &bev, sizeof(bev)) != sizeof(bev))
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goto out;
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len = bev.header.size - sizeof(bev);
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if (read(input, filename, len) != len)
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goto out;
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dso = dsos__findnew(filename);
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if (dso != NULL)
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dso__set_build_id(dso, &bev.build_id);
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offset += bev.header.size;
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}
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err = 0;
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out:
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return err;
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}
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static struct thread *perf_session__register_idle_thread(struct perf_session *self)
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{
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struct thread *thread = perf_session__findnew(self, 0);
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if (!thread || thread__set_comm(thread, "swapper")) {
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pr_err("problem inserting idle task.\n");
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thread = NULL;
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}
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return thread;
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}
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int perf_session__process_events(struct perf_session *self,
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struct perf_event_ops *ops)
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{
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int err;
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unsigned long head, shift;
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unsigned long offset = 0;
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size_t page_size;
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event_t *event;
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uint32_t size;
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char *buf;
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if (perf_session__register_idle_thread(self) == NULL)
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return -ENOMEM;
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perf_event_ops__fill_defaults(ops);
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page_size = getpagesize();
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head = self->header.data_offset;
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self->sample_type = perf_header__sample_type(&self->header);
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err = -EINVAL;
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if (ops->sample_type_check && ops->sample_type_check(self) < 0)
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goto out_err;
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if (!ops->full_paths) {
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char bf[PATH_MAX];
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if (getcwd(bf, sizeof(bf)) == NULL) {
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err = -errno;
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out_getcwd_err:
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pr_err("failed to get the current directory\n");
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goto out_err;
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}
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self->cwd = strdup(bf);
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if (self->cwd == NULL) {
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err = -ENOMEM;
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goto out_getcwd_err;
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}
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self->cwdlen = strlen(self->cwd);
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}
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shift = page_size * (head / page_size);
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offset += shift;
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head -= shift;
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remap:
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buf = mmap(NULL, page_size * self->mmap_window, PROT_READ,
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MAP_SHARED, self->fd, offset);
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if (buf == MAP_FAILED) {
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pr_err("failed to mmap file\n");
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err = -errno;
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goto out_err;
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}
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more:
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event = (event_t *)(buf + head);
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size = event->header.size;
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if (!size)
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size = 8;
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if (head + event->header.size >= page_size * self->mmap_window) {
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int munmap_ret;
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shift = page_size * (head / page_size);
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munmap_ret = munmap(buf, page_size * self->mmap_window);
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assert(munmap_ret == 0);
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offset += shift;
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head -= shift;
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goto remap;
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}
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size = event->header.size;
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dump_printf("\n%p [%p]: event: %d\n",
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(void *)(offset + head),
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(void *)(long)event->header.size,
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event->header.type);
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if (!size || process_event(event, self, ops, offset, head) < 0) {
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dump_printf("%p [%p]: skipping unknown header type: %d\n",
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(void *)(offset + head),
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(void *)(long)(event->header.size),
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event->header.type);
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/*
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* assume we lost track of the stream, check alignment, and
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* increment a single u64 in the hope to catch on again 'soon'.
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*/
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if (unlikely(head & 7))
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head &= ~7ULL;
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size = 8;
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}
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head += size;
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if (offset + head >= self->header.data_offset + self->header.data_size)
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goto done;
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if (offset + head < self->size)
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goto more;
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done:
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err = 0;
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out_err:
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return err;
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}
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@ -148,3 +148,248 @@ struct symbol **perf_session__resolve_callchain(struct perf_session *self,
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return syms;
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}
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static int process_event_stub(event_t *event __used,
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struct perf_session *session __used)
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{
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dump_printf(": unhandled!\n");
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return 0;
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}
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static void perf_event_ops__fill_defaults(struct perf_event_ops *handler)
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{
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if (handler->process_sample_event == NULL)
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handler->process_sample_event = process_event_stub;
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if (handler->process_mmap_event == NULL)
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handler->process_mmap_event = process_event_stub;
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if (handler->process_comm_event == NULL)
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handler->process_comm_event = process_event_stub;
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if (handler->process_fork_event == NULL)
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handler->process_fork_event = process_event_stub;
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if (handler->process_exit_event == NULL)
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handler->process_exit_event = process_event_stub;
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if (handler->process_lost_event == NULL)
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handler->process_lost_event = process_event_stub;
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if (handler->process_read_event == NULL)
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handler->process_read_event = process_event_stub;
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if (handler->process_throttle_event == NULL)
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handler->process_throttle_event = process_event_stub;
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if (handler->process_unthrottle_event == NULL)
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handler->process_unthrottle_event = process_event_stub;
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}
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static const char *event__name[] = {
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[0] = "TOTAL",
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[PERF_RECORD_MMAP] = "MMAP",
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[PERF_RECORD_LOST] = "LOST",
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[PERF_RECORD_COMM] = "COMM",
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[PERF_RECORD_EXIT] = "EXIT",
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[PERF_RECORD_THROTTLE] = "THROTTLE",
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[PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE",
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[PERF_RECORD_FORK] = "FORK",
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[PERF_RECORD_READ] = "READ",
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[PERF_RECORD_SAMPLE] = "SAMPLE",
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};
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unsigned long event__total[PERF_RECORD_MAX];
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void event__print_totals(void)
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{
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int i;
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for (i = 0; i < PERF_RECORD_MAX; ++i)
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pr_info("%10s events: %10ld\n",
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event__name[i], event__total[i]);
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}
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static int perf_session__process_event(struct perf_session *self,
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event_t *event,
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struct perf_event_ops *ops,
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unsigned long offset, unsigned long head)
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{
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trace_event(event);
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if (event->header.type < PERF_RECORD_MAX) {
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dump_printf("%p [%p]: PERF_RECORD_%s",
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(void *)(offset + head),
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(void *)(long)(event->header.size),
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event__name[event->header.type]);
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++event__total[0];
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++event__total[event->header.type];
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}
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switch (event->header.type) {
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case PERF_RECORD_SAMPLE:
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return ops->process_sample_event(event, self);
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case PERF_RECORD_MMAP:
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return ops->process_mmap_event(event, self);
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case PERF_RECORD_COMM:
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return ops->process_comm_event(event, self);
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case PERF_RECORD_FORK:
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return ops->process_fork_event(event, self);
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case PERF_RECORD_EXIT:
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return ops->process_exit_event(event, self);
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case PERF_RECORD_LOST:
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return ops->process_lost_event(event, self);
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case PERF_RECORD_READ:
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return ops->process_read_event(event, self);
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case PERF_RECORD_THROTTLE:
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return ops->process_throttle_event(event, self);
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case PERF_RECORD_UNTHROTTLE:
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return ops->process_unthrottle_event(event, self);
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default:
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ops->total_unknown++;
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return -1;
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}
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}
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int perf_header__read_build_ids(int input, u64 offset, u64 size)
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{
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struct build_id_event bev;
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char filename[PATH_MAX];
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u64 limit = offset + size;
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int err = -1;
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while (offset < limit) {
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struct dso *dso;
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ssize_t len;
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if (read(input, &bev, sizeof(bev)) != sizeof(bev))
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goto out;
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len = bev.header.size - sizeof(bev);
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if (read(input, filename, len) != len)
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goto out;
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dso = dsos__findnew(filename);
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if (dso != NULL)
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dso__set_build_id(dso, &bev.build_id);
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offset += bev.header.size;
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}
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err = 0;
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out:
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return err;
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}
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static struct thread *perf_session__register_idle_thread(struct perf_session *self)
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{
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struct thread *thread = perf_session__findnew(self, 0);
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if (thread == NULL || thread__set_comm(thread, "swapper")) {
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pr_err("problem inserting idle task.\n");
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thread = NULL;
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}
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return thread;
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}
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int perf_session__process_events(struct perf_session *self,
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struct perf_event_ops *ops)
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{
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int err;
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unsigned long head, shift;
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unsigned long offset = 0;
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size_t page_size;
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event_t *event;
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uint32_t size;
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char *buf;
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if (perf_session__register_idle_thread(self) == NULL)
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return -ENOMEM;
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perf_event_ops__fill_defaults(ops);
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page_size = getpagesize();
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head = self->header.data_offset;
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self->sample_type = perf_header__sample_type(&self->header);
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err = -EINVAL;
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if (ops->sample_type_check && ops->sample_type_check(self) < 0)
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goto out_err;
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|
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if (!ops->full_paths) {
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char bf[PATH_MAX];
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|
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if (getcwd(bf, sizeof(bf)) == NULL) {
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err = -errno;
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out_getcwd_err:
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pr_err("failed to get the current directory\n");
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goto out_err;
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}
|
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self->cwd = strdup(bf);
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if (self->cwd == NULL) {
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err = -ENOMEM;
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goto out_getcwd_err;
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}
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self->cwdlen = strlen(self->cwd);
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}
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shift = page_size * (head / page_size);
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offset += shift;
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head -= shift;
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|
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remap:
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buf = mmap(NULL, page_size * self->mmap_window, PROT_READ,
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MAP_SHARED, self->fd, offset);
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if (buf == MAP_FAILED) {
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pr_err("failed to mmap file\n");
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err = -errno;
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goto out_err;
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}
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more:
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event = (event_t *)(buf + head);
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size = event->header.size;
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if (size == 0)
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size = 8;
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|
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if (head + event->header.size >= page_size * self->mmap_window) {
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int munmap_ret;
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shift = page_size * (head / page_size);
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munmap_ret = munmap(buf, page_size * self->mmap_window);
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assert(munmap_ret == 0);
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offset += shift;
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head -= shift;
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goto remap;
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}
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size = event->header.size;
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dump_printf("\n%p [%p]: event: %d\n",
|
||||
(void *)(offset + head),
|
||||
(void *)(long)event->header.size,
|
||||
event->header.type);
|
||||
|
||||
if (size == 0 ||
|
||||
perf_session__process_event(self, event, 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
Block a user