Declare dso const, so that functions can be called with const struct *dso.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
 tools/perf/util/dso.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h
index 0b7c7633b9f6..dfc4cf3de7a8 100644
--- a/tools/perf/util/dso.h
+++ b/tools/perf/util/dso.h
@@ -379,19 +379,19 @@ void dso__reset_find_symbol_cache(struct dso *dso);
 size_t dso__fprintf_symbols_by_name(struct dso *dso, FILE *fp);
 size_t dso__fprintf(struct dso *dso, FILE *fp);
 
-static inline bool dso__is_vmlinux(struct dso *dso)
+static inline bool dso__is_vmlinux(const struct dso *dso)
 {
 	return dso->binary_type == DSO_BINARY_TYPE__VMLINUX ||
 	       dso->binary_type == DSO_BINARY_TYPE__GUEST_VMLINUX;
 }
 
-static inline bool dso__is_kcore(struct dso *dso)
+static inline bool dso__is_kcore(const struct dso *dso)
 {
 	return dso->binary_type == DSO_BINARY_TYPE__KCORE ||
 	       dso->binary_type == DSO_BINARY_TYPE__GUEST_KCORE;
 }
 
-static inline bool dso__is_kallsyms(struct dso *dso)
+static inline bool dso__is_kallsyms(const struct dso *dso)
 {
 	return dso->kernel && dso->long_name[0] != '/';
 }
-- 
2.34.1