aboutsummaryrefslogtreecommitdiff
path: root/tools/perf/util
diff options
context:
space:
mode:
Diffstat (limited to 'tools/perf/util')
-rw-r--r--tools/perf/util/session.c59
-rw-r--r--tools/perf/util/session.h7
2 files changed, 66 insertions, 0 deletions
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index fe87a2f2e5a..ecd54bedfb1 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -4,6 +4,7 @@
#include <sys/types.h>
#include "session.h"
+#include "sort.h"
#include "util.h"
static int perf_session__open(struct perf_session *self, bool force)
@@ -90,3 +91,61 @@ void perf_session__delete(struct perf_session *self)
free(self->cwd);
free(self);
}
+
+static bool symbol__match_parent_regex(struct symbol *sym)
+{
+ if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0))
+ return 1;
+
+ return 0;
+}
+
+struct symbol **perf_session__resolve_callchain(struct perf_session *self,
+ struct thread *thread,
+ struct ip_callchain *chain,
+ struct symbol **parent)
+{
+ u8 cpumode = PERF_RECORD_MISC_USER;
+ struct symbol **syms = NULL;
+ unsigned int i;
+
+ if (self->use_callchain) {
+ syms = calloc(chain->nr, sizeof(*syms));
+ if (!syms) {
+ fprintf(stderr, "Can't allocate memory for symbols\n");
+ exit(-1);
+ }
+ }
+
+ for (i = 0; i < chain->nr; i++) {
+ u64 ip = chain->ips[i];
+ struct addr_location al;
+
+ if (ip >= PERF_CONTEXT_MAX) {
+ switch (ip) {
+ case PERF_CONTEXT_HV:
+ cpumode = PERF_RECORD_MISC_HYPERVISOR; break;
+ case PERF_CONTEXT_KERNEL:
+ cpumode = PERF_RECORD_MISC_KERNEL; break;
+ case PERF_CONTEXT_USER:
+ cpumode = PERF_RECORD_MISC_USER; break;
+ default:
+ break;
+ }
+ continue;
+ }
+
+ thread__find_addr_location(thread, self, cpumode,
+ MAP__FUNCTION, ip, &al, NULL);
+ if (al.sym != NULL) {
+ if (sort__has_parent && !*parent &&
+ symbol__match_parent_regex(al.sym))
+ *parent = al.sym;
+ if (!self->use_callchain)
+ break;
+ syms[i] = al.sym;
+ }
+ }
+
+ return syms;
+}
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index 759d96022a3..a8f3a49ca43 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -6,7 +6,9 @@
#include "thread.h"
#include <linux/rbtree.h>
+struct ip_callchain;
struct thread;
+struct symbol;
struct symbol_conf;
struct perf_session {
@@ -50,6 +52,11 @@ void perf_session__delete(struct perf_session *self);
int perf_session__process_events(struct perf_session *self,
struct perf_event_ops *event_ops);
+struct symbol **perf_session__resolve_callchain(struct perf_session *self,
+ struct thread *thread,
+ struct ip_callchain *chain,
+ struct symbol **parent);
+
int perf_header__read_build_ids(int input, u64 offset, u64 file_size);
#endif /* __PERF_SESSION_H */