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perf symbols: Look at .dynsym again if .symtab not found 

The original intent of the code was to repeat the search with
want_symtab = 0. But as the code stands now, we never hit the "default"
case of the switch statement. Which means we never repeat the search.

Tested-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Reported-by: Arun Sharma <asharma@fb.com>
Reported-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Dave Martin <dave.martin@linaro.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2011-03-22 15:42:14 -03:00
parent b25114817a
commit 60e4b10c5a
1 changed files with 13 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
tools/perf/util/symbol.c
View File

@ -1486,7 +1486,9 @@ int dso__load(struct dso *self, struct map *map, symbol_filter_t filter)
* On the first pass, only load images if they have a full symtab. * On the first pass, only load images if they have a full symtab.
* Failing that, do a second pass where we accept .dynsym also * Failing that, do a second pass where we accept .dynsym also
*/ */
for (self->symtab_type = SYMTAB__BUILD_ID_CACHE, want_symtab = 1; want_symtab = 1;
restart:
for (self->symtab_type = SYMTAB__BUILD_ID_CACHE;
self->symtab_type != SYMTAB__NOT_FOUND; self->symtab_type != SYMTAB__NOT_FOUND;
self->symtab_type++) { self->symtab_type++) {
switch (self->symtab_type) { switch (self->symtab_type) {
@ -1536,17 +1538,7 @@ int dso__load(struct dso *self, struct map *map, symbol_filter_t filter)
snprintf(name, size, "%s%s", symbol_conf.symfs, snprintf(name, size, "%s%s", symbol_conf.symfs,
self->long_name); self->long_name);
break; break;
default:;
default:
/*
* If we wanted a full symtab but no image had one,
* relax our requirements and repeat the search.
*/
if (want_symtab) {
want_symtab = 0;
self->symtab_type = SYMTAB__BUILD_ID_CACHE;
} else
continue;
} }
/* Name is now the name of the next image to try */ /* Name is now the name of the next image to try */
@ -1573,6 +1565,15 @@ int dso__load(struct dso *self, struct map *map, symbol_filter_t filter)
} }
} }
/*
* If we wanted a full symtab but no image had one,
* relax our requirements and repeat the search.
*/
if (ret <= 0 && want_symtab) {
want_symtab = 0;
goto restart;
}
free(name); free(name);
if (ret < 0 && strstr(self->name, " (deleted)") != NULL) if (ret < 0 && strstr(self->name, " (deleted)") != NULL)
return 0; return 0;