perf_counter tools: Optionally pass a symbol filter to the dso load routines

Will be used by perf top.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20090528175526.GF4747@ghostprotocols.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/Documentation/perf_counter/util/symbol.h b/Documentation/perf_counter/util/symbol.h
index db2fdf9..b0299bc 100644
--- a/Documentation/perf_counter/util/symbol.h
+++ b/Documentation/perf_counter/util/symbol.h
@@ -19,6 +19,8 @@
 	char		 name[0];
 };
 
+typedef int (*symbol_filter_t)(struct dso *self, struct symbol *sym);
+
 struct dso *dso__new(const char *name, unsigned int sym_priv_size);
 void dso__delete(struct dso *self);
 
@@ -29,8 +31,9 @@
 
 struct symbol *dso__find_symbol(struct dso *self, uint64_t ip);
 
-int dso__load_kernel(struct dso *self, const char *vmlinux);
-int dso__load(struct dso *self);
+int dso__load_kernel(struct dso *self, const char *vmlinux,
+		     symbol_filter_t filter);
+int dso__load(struct dso *self, symbol_filter_t filter);
 
 size_t dso__fprintf(struct dso *self, FILE *fp);