perf hists browser: Allow annotating entries in callchains

Instead of annotating just the top level hist_entry, allow instead
annotating a map_symbol, i.e. the top level hist_entry or one of the
callchains for which there were samples.

Suggested-by: Stephane Eranian <eranian@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/n/tip-k1zxj5564je9jei4yd15ouwn@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c
index 9d32e3c..e5250eb 100644 (file)
--- a/tools/perf/ui/browsers/annotate.c
+++ b/tools/perf/ui/browsers/annotate.c
@@ -829,10 +829,16 @@ out:
        return key;
 }
 
+int map_symbol__tui_annotate(struct map_symbol *ms, struct perf_evsel *evsel,
+                            struct hist_browser_timer *hbt)
+{
+       return symbol__tui_annotate(ms->sym, ms->map, evsel, hbt);
+}
+
 int hist_entry__tui_annotate(struct hist_entry *he, struct perf_evsel *evsel,
                             struct hist_browser_timer *hbt)
 {
-       return symbol__tui_annotate(he->ms.sym, he->ms.map, evsel, hbt);
+       return map_symbol__tui_annotate(&he->ms, evsel, hbt);
 }
 
 static void annotate_browser__mark_jump_targets(struct annotate_browser *browser,

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index c37e70a..cd7350a 100644 (file)
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -1704,6 +1704,7 @@ retry_popup_menu:
                if (choice == annotate || choice == annotate_t || choice == annotate_f) {
                        struct hist_entry *he;
                        struct annotation *notes;
+                       struct map_symbol ms;
                        int err;
 do_annotate:
                        if (!objdump_path && perf_session_env__lookup_objdump(env))
@@ -1713,25 +1714,21 @@ do_annotate:
                        if (he == NULL)
                                continue;
 
-                       /*
-                        * we stash the branch_info symbol + map into the
-                        * the ms so we don't have to rewrite all the annotation
-                        * code to use branch_info.
-                        * in branch mode, the ms struct is not used
-                        */
                        if (choice == annotate_f) {
-                               he->ms.sym = he->branch_info->from.sym;
-                               he->ms.map = he->branch_info->from.map;
-                       }  else if (choice == annotate_t) {
-                               he->ms.sym = he->branch_info->to.sym;
-                               he->ms.map = he->branch_info->to.map;
+                               ms.map = he->branch_info->from.map;
+                               ms.sym = he->branch_info->from.sym;
+                       } else if (choice == annotate_t) {
+                               ms.map = he->branch_info->to.map;
+                               ms.sym = he->branch_info->to.sym;
+                       } else {
+                               ms = *browser->selection;
                        }
 
-                       notes = symbol__annotation(he->ms.sym);
+                       notes = symbol__annotation(ms.sym);
                        if (!notes->src)
                                continue;
 
-                       err = hist_entry__tui_annotate(he, evsel, hbt);
+                       err = map_symbol__tui_annotate(&ms, evsel, hbt);
                        /*
                         * offer option to annotate the other branch source or target
                         * (if they exists) when returning from annotate

diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index e988c9f..9f31b89 100644 (file)
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -303,6 +303,9 @@ struct hist_browser_timer {
 
 #ifdef HAVE_SLANG_SUPPORT
 #include "../ui/keysyms.h"
+int map_symbol__tui_annotate(struct map_symbol *ms, struct perf_evsel *evsel,
+                            struct hist_browser_timer *hbt);
+
 int hist_entry__tui_annotate(struct hist_entry *he, struct perf_evsel *evsel,
                             struct hist_browser_timer *hbt);
 
@@ -321,6 +324,12 @@ int perf_evlist__tui_browse_hists(struct perf_evlist *evlist __maybe_unused,
 {
        return 0;
 }
+static inline int map_symbol__tui_annotate(struct map_symbol *ms __maybe_unused,
+                                          struct perf_evsel *evsel __maybe_unused,
+                                          struct hist_browser_timer *hbt __maybe_unused)
+{
+       return 0;
+}
 
 static inline int hist_entry__tui_annotate(struct hist_entry *he __maybe_unused,
                                           struct perf_evsel *evsel __maybe_unused,