Merge branch 'kvm-amd-pmu-fixes' into HEAD

[linux-2.6-microblaze.git] / tools / perf / util / unwind.h

diff --git a/tools/perf/util/unwind.h b/tools/perf/util/unwind.h
index ab8ad46..b2a03fa 100644 (file)
--- a/tools/perf/util/unwind.h
+++ b/tools/perf/util/unwind.h
@@ -23,13 +23,19 @@ struct unwind_libunwind_ops {
        void (*finish_access)(struct maps *maps);
        int (*get_entries)(unwind_entry_cb_t cb, void *arg,
                           struct thread *thread,
-                          struct perf_sample *data, int max_stack);
+                          struct perf_sample *data, int max_stack, bool best_effort);
 };
 
 #ifdef HAVE_DWARF_UNWIND_SUPPORT
+/*
+ * When best_effort is set, don't report errors and fail silently. This could
+ * be expanded in the future to be more permissive about things other than
+ * error messages.
+ */
 int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
                        struct thread *thread,
-                       struct perf_sample *data, int max_stack);
+                       struct perf_sample *data, int max_stack,
+                       bool best_effort);
 /* libunwind specific */
 #ifdef HAVE_LIBUNWIND_SUPPORT
 #ifndef LIBUNWIND__ARCH_REG_ID
@@ -65,7 +71,8 @@ unwind__get_entries(unwind_entry_cb_t cb __maybe_unused,
                    void *arg __maybe_unused,
                    struct thread *thread __maybe_unused,
                    struct perf_sample *data __maybe_unused,
-                   int max_stack __maybe_unused)
+                   int max_stack __maybe_unused,
+                   bool best_effort __maybe_unused)
 {
        return 0;
 }