perf annotate: Sort by hottest lines in the TUI

Right now it will just sort and position at the hottest line, i.e.
the one where more samples were taken.

It will be at the center of the screen and later TAB/shift-TAB will
cycle thru the hottest lines.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 7 insertions, 6 deletions

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 62ec9b0e4b9a..be22ae6ef055 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -983,9 +983,9 @@ int hist_entry__inc_addr_samples(struct hist_entry *self, u64 ip)
         return 0;
 }
 
-static struct objdump_line *objdump_line__new(s64 offset, char *line)
+static struct objdump_line *objdump_line__new(s64 offset, char *line, size_t privsize)
 {
-        struct objdump_line *self = malloc(sizeof(*self));
+        struct objdump_line *self = malloc(sizeof(*self) + privsize);
 
         if (self != NULL) {
                 self->offset = offset;
@@ -1017,7 +1017,7 @@ struct objdump_line *objdump__get_next_ip_line(struct list_head *head,
 }
 
 static int hist_entry__parse_objdump_line(struct hist_entry *self, FILE *file,
-                                          struct list_head *head)
+                                          struct list_head *head, size_t privsize)
 {
         struct symbol *sym = self->ms.sym;
         struct objdump_line *objdump_line;
@@ -1068,7 +1068,7 @@ static int hist_entry__parse_objdump_line(struct hist_entry *self, FILE *file,
                         offset = -1;
         }
 
-        objdump_line = objdump_line__new(offset, line);
+        objdump_line = objdump_line__new(offset, line, privsize);
         if (objdump_line == NULL) {
                 free(line);
                 return -1;
@@ -1078,7 +1078,8 @@ static int hist_entry__parse_objdump_line(struct hist_entry *self, FILE *file,
         return 0;
 }
 
-int hist_entry__annotate(struct hist_entry *self, struct list_head *head)
+int hist_entry__annotate(struct hist_entry *self, struct list_head *head,
+                         size_t privsize)
 {
         struct symbol *sym = self->ms.sym;
         struct map *map = self->ms.map;
@@ -1143,7 +1144,7 @@ fallback:
                 goto out_free_filename;
 
         while (!feof(file))
-                if (hist_entry__parse_objdump_line(self, file, head) < 0)
+                if (hist_entry__parse_objdump_line(self, file, head, privsize) < 0)
                         break;
 
         pclose(file);