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perf annotate: Add call target name if it is missing

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The /proc/kcore file has no symbols, so the call target name does not
display.  Fix by looking up the symbol name if it is on the same map.

Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1375875537-4509-14-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2013-08-07 14:38:57 +03:00 committed by Arnaldo Carvalho de Melo
parent 484a5e7476
commit b178170a38
1 changed files with 16 additions and 0 deletions
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16
tools/perf/util/annotate.c
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@ -825,6 +825,22 @@ static int symbol__parse_objdump_line(struct symbol *sym, struct map *map,
dl->ops.target.offset = dl->ops.target.addr - dl->ops.target.offset = dl->ops.target.addr -
map__rip_2objdump(map, sym->start); map__rip_2objdump(map, sym->start);
/*
* kcore has no symbols, so add the call target name if it is on the
* same map.
*/
if (dl->ins && ins__is_call(dl->ins) && !dl->ops.target.name) {
struct symbol *s;
u64 ip = dl->ops.target.addr;
if (ip >= map->start && ip <= map->end) {
ip = map->map_ip(map, ip);
s = map__find_symbol(map, ip, NULL);
if (s && s->start == ip)
dl->ops.target.name = strdup(s->name);
}
}
disasm__add(&notes->src->source, dl); disasm__add(&notes->src->source, dl);
return 0; return 0;