perf annotate: Introduce struct sym_hist_entry

struct sym_hist has addr[] but it should have not only number of samples
but also the sample period.  So use new struct symhist_entry to pave the
way to have that.

Committer notes:

This initial patch will only introduce the struct sym_hist_entry and use
only the nr_samples member, which makes the code clearer and paves the
way to save the period as well.

Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1500500205-16553-1-git-send-email-treeze.taeung@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h
index bac698d7cc6a..3a176633b324 100644
--- a/tools/perf/util/annotate.h
+++ b/tools/perf/util/annotate.h
@@ -74,16 +74,21 @@ static inline bool disasm_line__has_offset(const struct disasm_line *dl)
         return dl->ops.target.offset_avail;
 }
 
+struct sym_hist_entry {
+        u64             nr_samples;
+        u64             period;
+};
+
 void disasm_line__free(struct disasm_line *dl);
 struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos);
 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw);
 size_t disasm__fprintf(struct list_head *head, FILE *fp);
 double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset,
-                            s64 end, const char **path, u64 *nr_samples);
+                            s64 end, const char **path, struct sym_hist_entry *sample);
 
 struct sym_hist {
         u64             sum;
-        u64             addr[0];
+        struct sym_hist_entry addr[0];
 };
 
 struct cyc_hist {