return 0;
}
-#define MAX_EVENT_NAME 64
-
-struct perf_trace_event_type {
- u64 event_id;
- char name[MAX_EVENT_NAME];
-};
-
static int event_count;
static struct perf_trace_event_type *events;
continue; \
else
-static int __dsos__write_buildid_table(struct list_head *head, u16 misc, int fd)
+static int __dsos__write_buildid_table(struct list_head *head, pid_t pid,
+ u16 misc, int fd)
{
struct dso *pos;
len = ALIGN(len, NAME_ALIGN);
memset(&b, 0, sizeof(b));
memcpy(&b.build_id, pos->build_id, sizeof(pos->build_id));
+ b.pid = pid;
b.header.misc = misc;
b.header.size = sizeof(b) + len;
err = do_write(fd, &b, sizeof(b));
return 0;
}
-static int dsos__write_buildid_table(int fd)
+static int dsos__write_buildid_table(struct perf_header *header, int fd)
{
- int err = __dsos__write_buildid_table(&dsos__kernel,
- PERF_RECORD_MISC_KERNEL, fd);
- if (err == 0)
- err = __dsos__write_buildid_table(&dsos__user,
- PERF_RECORD_MISC_USER, fd);
+ struct perf_session *session = container_of(header,
+ struct perf_session, header);
+ struct rb_node *nd;
+ int err = 0;
+ u16 kmisc, umisc;
+
+ for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) {
+ struct machine *pos = rb_entry(nd, struct machine, rb_node);
+ if (machine__is_host(pos)) {
+ kmisc = PERF_RECORD_MISC_KERNEL;
+ umisc = PERF_RECORD_MISC_USER;
+ } else {
+ kmisc = PERF_RECORD_MISC_GUEST_KERNEL;
+ umisc = PERF_RECORD_MISC_GUEST_USER;
+ }
+
+ err = __dsos__write_buildid_table(&pos->kernel_dsos, pos->pid,
+ kmisc, fd);
+ if (err == 0)
+ err = __dsos__write_buildid_table(&pos->user_dsos,
+ pos->pid, umisc, fd);
+ if (err)
+ break;
+ }
return err;
}
return err;
}
-static int dsos__cache_build_ids(void)
+static int dsos__cache_build_ids(struct perf_header *self)
{
- int err_kernel, err_user;
+ struct perf_session *session = container_of(self,
+ struct perf_session, header);
+ struct rb_node *nd;
+ int ret = 0;
char debugdir[PATH_MAX];
snprintf(debugdir, sizeof(debugdir), "%s/%s", getenv("HOME"),
if (mkdir(debugdir, 0755) != 0 && errno != EEXIST)
return -1;
- err_kernel = __dsos__cache_build_ids(&dsos__kernel, debugdir);
- err_user = __dsos__cache_build_ids(&dsos__user, debugdir);
- return err_kernel || err_user ? -1 : 0;
+ for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) {
+ struct machine *pos = rb_entry(nd, struct machine, rb_node);
+ ret |= __dsos__cache_build_ids(&pos->kernel_dsos, debugdir);
+ ret |= __dsos__cache_build_ids(&pos->user_dsos, debugdir);
+ }
+ return ret ? -1 : 0;
+}
+
+static bool dsos__read_build_ids(struct perf_header *self, bool with_hits)
+{
+ bool ret = false;
+ struct perf_session *session = container_of(self,
+ struct perf_session, header);
+ struct rb_node *nd;
+
+ for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) {
+ struct machine *pos = rb_entry(nd, struct machine, rb_node);
+ ret |= __dsos__read_build_ids(&pos->kernel_dsos, with_hits);
+ ret |= __dsos__read_build_ids(&pos->user_dsos, with_hits);
+ }
+
+ return ret;
}
static int perf_header__adds_write(struct perf_header *self, int fd)
u64 sec_start;
int idx = 0, err;
- if (dsos__read_build_ids(true))
+ if (dsos__read_build_ids(self, true))
perf_header__set_feat(self, HEADER_BUILD_ID);
nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS);
trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset;
}
-
if (perf_header__has_feat(self, HEADER_BUILD_ID)) {
struct perf_file_section *buildid_sec;
/* Write build-ids */
buildid_sec->offset = lseek(fd, 0, SEEK_CUR);
- err = dsos__write_buildid_table(fd);
+ err = dsos__write_buildid_table(self, fd);
if (err < 0) {
pr_debug("failed to write buildid table\n");
goto out_free;
}
buildid_sec->size = lseek(fd, 0, SEEK_CUR) -
buildid_sec->offset;
- dsos__cache_build_ids();
+ dsos__cache_build_ids(self);
}
lseek(fd, sec_start, SEEK_SET);
return err;
}
+int perf_header__write_pipe(int fd)
+{
+ struct perf_pipe_file_header f_header;
+ int err;
+
+ f_header = (struct perf_pipe_file_header){
+ .magic = PERF_MAGIC,
+ .size = sizeof(f_header),
+ };
+
+ err = do_write(fd, &f_header, sizeof(f_header));
+ if (err < 0) {
+ pr_debug("failed to write perf pipe header\n");
+ return err;
+ }
+
+ return 0;
+}
+
int perf_header__write(struct perf_header *self, int fd, bool at_exit)
{
struct perf_file_header f_header;
return 0;
}
-static int do_read(int fd, void *buf, size_t size)
-{
- while (size) {
- int ret = read(fd, buf, size);
-
- if (ret <= 0)
- return -1;
-
- size -= ret;
- buf += ret;
- }
-
- return 0;
-}
-
static int perf_header__getbuffer64(struct perf_header *self,
int fd, void *buf, size_t size)
{
- if (do_read(fd, buf, size))
+ if (do_read(fd, buf, size) <= 0)
return -1;
if (self->needs_swap)
{
lseek(fd, 0, SEEK_SET);
- if (do_read(fd, self, sizeof(*self)) ||
+ if (do_read(fd, self, sizeof(*self)) <= 0 ||
memcmp(&self->magic, __perf_magic, sizeof(self->magic)))
return -1;
return 0;
}
+static int __event_process_build_id(struct build_id_event *bev,
+ char *filename,
+ struct perf_session *session)
+{
+ int err = -1;
+ struct list_head *head;
+ struct machine *machine;
+ u16 misc;
+ struct dso *dso;
+ enum dso_kernel_type dso_type;
+
+ machine = perf_session__findnew_machine(session, bev->pid);
+ if (!machine)
+ goto out;
+
+ misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
+
+ switch (misc) {
+ case PERF_RECORD_MISC_KERNEL:
+ dso_type = DSO_TYPE_KERNEL;
+ head = &machine->kernel_dsos;
+ break;
+ case PERF_RECORD_MISC_GUEST_KERNEL:
+ dso_type = DSO_TYPE_GUEST_KERNEL;
+ head = &machine->kernel_dsos;
+ break;
+ case PERF_RECORD_MISC_USER:
+ case PERF_RECORD_MISC_GUEST_USER:
+ dso_type = DSO_TYPE_USER;
+ head = &machine->user_dsos;
+ break;
+ default:
+ goto out;
+ }
+
+ dso = __dsos__findnew(head, filename);
+ if (dso != NULL) {
+ char sbuild_id[BUILD_ID_SIZE * 2 + 1];
+
+ dso__set_build_id(dso, &bev->build_id);
+
+ if (filename[0] == '[')
+ dso->kernel = dso_type;
+
+ build_id__sprintf(dso->build_id, sizeof(dso->build_id),
+ sbuild_id);
+ pr_debug("build id event received for %s: %s\n",
+ dso->long_name, sbuild_id);
+ }
+
+ err = 0;
+out:
+ return err;
+}
+
+static int perf_header__read_build_ids(struct perf_header *self,
+ int input, u64 offset, u64 size)
+{
+ struct perf_session *session = container_of(self,
+ struct perf_session, header);
+ struct build_id_event bev;
+ char filename[PATH_MAX];
+ u64 limit = offset + size;
+ int err = -1;
+
+ while (offset < limit) {
+ ssize_t len;
+
+ if (read(input, &bev, sizeof(bev)) != sizeof(bev))
+ goto out;
+
+ if (self->needs_swap)
+ perf_event_header__bswap(&bev.header);
+
+ len = bev.header.size - sizeof(bev);
+ if (read(input, filename, len) != len)
+ goto out;
+
+ __event_process_build_id(&bev, filename, session);
+
+ offset += bev.header.size;
+ }
+ err = 0;
+out:
+ return err;
+}
+
static int perf_file_section__process(struct perf_file_section *self,
struct perf_header *ph,
int feat, int fd)
switch (feat) {
case HEADER_TRACE_INFO:
- trace_report(fd);
+ trace_report(fd, false);
break;
case HEADER_BUILD_ID:
return 0;
}
-int perf_header__read(struct perf_header *self, int fd)
+static int perf_file_header__read_pipe(struct perf_pipe_file_header *self,
+ struct perf_header *ph, int fd,
+ bool repipe)
+{
+ if (do_read(fd, self, sizeof(*self)) <= 0 ||
+ memcmp(&self->magic, __perf_magic, sizeof(self->magic)))
+ return -1;
+
+ if (repipe && do_write(STDOUT_FILENO, self, sizeof(*self)) < 0)
+ return -1;
+
+ if (self->size != sizeof(*self)) {
+ u64 size = bswap_64(self->size);
+
+ if (size != sizeof(*self))
+ return -1;
+
+ ph->needs_swap = true;
+ }
+
+ return 0;
+}
+
+static int perf_header__read_pipe(struct perf_session *session, int fd)
{
+ struct perf_header *self = &session->header;
+ struct perf_pipe_file_header f_header;
+
+ if (perf_file_header__read_pipe(&f_header, self, fd,
+ session->repipe) < 0) {
+ pr_debug("incompatible file format\n");
+ return -EINVAL;
+ }
+
+ session->fd = fd;
+
+ return 0;
+}
+
+int perf_header__read(struct perf_session *session, int fd)
+{
+ struct perf_header *self = &session->header;
struct perf_file_header f_header;
struct perf_file_attr f_attr;
u64 f_id;
int nr_attrs, nr_ids, i, j;
+ if (session->fd_pipe)
+ return perf_header__read_pipe(session, fd);
+
if (perf_file_header__read(&f_header, self, fd) < 0) {
pr_debug("incompatible file format\n");
return -EINVAL;
{
int i;
+ /*
+ * We set id to -1 if the data file doesn't contain sample
+ * ids. Check for this and avoid walking through the entire
+ * list of ids which may be large.
+ */
+ if (id == -1ULL)
+ return NULL;
+
for (i = 0; i < header->attrs; i++) {
struct perf_header_attr *attr = header->attr[i];
int j;
return NULL;
}
+
+int event__synthesize_attr(struct perf_event_attr *attr, u16 ids, u64 *id,
+ event__handler_t process,
+ struct perf_session *session)
+{
+ event_t *ev;
+ size_t size;
+ int err;
+
+ size = sizeof(struct perf_event_attr);
+ size = ALIGN(size, sizeof(u64));
+ size += sizeof(struct perf_event_header);
+ size += ids * sizeof(u64);
+
+ ev = malloc(size);
+
+ ev->attr.attr = *attr;
+ memcpy(ev->attr.id, id, ids * sizeof(u64));
+
+ ev->attr.header.type = PERF_RECORD_HEADER_ATTR;
+ ev->attr.header.size = size;
+
+ err = process(ev, session);
+
+ free(ev);
+
+ return err;
+}
+
+int event__synthesize_attrs(struct perf_header *self,
+ event__handler_t process,
+ struct perf_session *session)
+{
+ struct perf_header_attr *attr;
+ int i, err = 0;
+
+ for (i = 0; i < self->attrs; i++) {
+ attr = self->attr[i];
+
+ err = event__synthesize_attr(&attr->attr, attr->ids, attr->id,
+ process, session);
+ if (err) {
+ pr_debug("failed to create perf header attribute\n");
+ return err;
+ }
+ }
+
+ return err;
+}
+
+int event__process_attr(event_t *self, struct perf_session *session)
+{
+ struct perf_header_attr *attr;
+ unsigned int i, ids, n_ids;
+
+ attr = perf_header_attr__new(&self->attr.attr);
+ if (attr == NULL)
+ return -ENOMEM;
+
+ ids = self->header.size;
+ ids -= (void *)&self->attr.id - (void *)self;
+ n_ids = ids / sizeof(u64);
+
+ for (i = 0; i < n_ids; i++) {
+ if (perf_header_attr__add_id(attr, self->attr.id[i]) < 0) {
+ perf_header_attr__delete(attr);
+ return -ENOMEM;
+ }
+ }
+
+ if (perf_header__add_attr(&session->header, attr) < 0) {
+ perf_header_attr__delete(attr);
+ return -ENOMEM;
+ }
+
+ perf_session__update_sample_type(session);
+
+ return 0;
+}
+
+int event__synthesize_event_type(u64 event_id, char *name,
+ event__handler_t process,
+ struct perf_session *session)
+{
+ event_t ev;
+ size_t size = 0;
+ int err = 0;
+
+ memset(&ev, 0, sizeof(ev));
+
+ ev.event_type.event_type.event_id = event_id;
+ memset(ev.event_type.event_type.name, 0, MAX_EVENT_NAME);
+ strncpy(ev.event_type.event_type.name, name, MAX_EVENT_NAME - 1);
+
+ ev.event_type.header.type = PERF_RECORD_HEADER_EVENT_TYPE;
+ size = strlen(name);
+ size = ALIGN(size, sizeof(u64));
+ ev.event_type.header.size = sizeof(ev.event_type) -
+ (sizeof(ev.event_type.event_type.name) - size);
+
+ err = process(&ev, session);
+
+ return err;
+}
+
+int event__synthesize_event_types(event__handler_t process,
+ struct perf_session *session)
+{
+ struct perf_trace_event_type *type;
+ int i, err = 0;
+
+ for (i = 0; i < event_count; i++) {
+ type = &events[i];
+
+ err = event__synthesize_event_type(type->event_id, type->name,
+ process, session);
+ if (err) {
+ pr_debug("failed to create perf header event type\n");
+ return err;
+ }
+ }
+
+ return err;
+}
+
+int event__process_event_type(event_t *self,
+ struct perf_session *session __unused)
+{
+ if (perf_header__push_event(self->event_type.event_type.event_id,
+ self->event_type.event_type.name) < 0)
+ return -ENOMEM;
+
+ return 0;
+}
+
+int event__synthesize_tracing_data(int fd, struct perf_event_attr *pattrs,
+ int nb_events,
+ event__handler_t process,
+ struct perf_session *session __unused)
+{
+ event_t ev;
+ ssize_t size = 0, aligned_size = 0, padding;
+ int err = 0;
+
+ memset(&ev, 0, sizeof(ev));
+
+ ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA;
+ size = read_tracing_data_size(fd, pattrs, nb_events);
+ if (size <= 0)
+ return size;
+ aligned_size = ALIGN(size, sizeof(u64));
+ padding = aligned_size - size;
+ ev.tracing_data.header.size = sizeof(ev.tracing_data);
+ ev.tracing_data.size = aligned_size;
+
+ process(&ev, session);
+
+ err = read_tracing_data(fd, pattrs, nb_events);
+ write_padded(fd, NULL, 0, padding);
+
+ return aligned_size;
+}
+
+int event__process_tracing_data(event_t *self,
+ struct perf_session *session)
+{
+ ssize_t size_read, padding, size = self->tracing_data.size;
+ off_t offset = lseek(session->fd, 0, SEEK_CUR);
+ char buf[BUFSIZ];
+
+ /* setup for reading amidst mmap */
+ lseek(session->fd, offset + sizeof(struct tracing_data_event),
+ SEEK_SET);
+
+ size_read = trace_report(session->fd, session->repipe);
+
+ padding = ALIGN(size_read, sizeof(u64)) - size_read;
+
+ if (read(session->fd, buf, padding) < 0)
+ die("reading input file");
+ if (session->repipe) {
+ int retw = write(STDOUT_FILENO, buf, padding);
+ if (retw <= 0 || retw != padding)
+ die("repiping tracing data padding");
+ }
+
+ if (size_read + padding != size)
+ die("tracing data size mismatch");
+
+ return size_read + padding;
+}
+
+int event__synthesize_build_id(struct dso *pos, u16 misc,
+ event__handler_t process,
+ struct machine *machine,
+ struct perf_session *session)
+{
+ event_t ev;
+ size_t len;
+ int err = 0;
+
+ if (!pos->hit)
+ return err;
+
+ memset(&ev, 0, sizeof(ev));
+
+ len = pos->long_name_len + 1;
+ len = ALIGN(len, NAME_ALIGN);
+ memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id));
+ ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID;
+ ev.build_id.header.misc = misc;
+ ev.build_id.pid = machine->pid;
+ ev.build_id.header.size = sizeof(ev.build_id) + len;
+ memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len);
+
+ err = process(&ev, session);
+
+ return err;
+}
+
+int event__process_build_id(event_t *self,
+ struct perf_session *session)
+{
+ __event_process_build_id(&self->build_id,
+ self->build_id.filename,
+ session);
+ return 0;
+}
git.samba.org / sfrench / cifs-2.6.git / blobdiff