diff options
| -rw-r--r-- | tools/perf/util/dso.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index 5d7c7bcc6276..76e5c13afc8f 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -1,3 +1,4 @@ +#include <asm/bug.h> #include "symbol.h" #include "dso.h" #include "machine.h" @@ -137,18 +138,23 @@ int dso__read_binary_type_filename(const struct dso *dso, } /* - * Global list of open DSOs. + * Global list of open DSOs and the counter. */ static LIST_HEAD(dso__data_open); +static long dso__data_open_cnt; static void dso__list_add(struct dso *dso) { list_add_tail(&dso->data.open_entry, &dso__data_open); + dso__data_open_cnt++; } static void dso__list_del(struct dso *dso) { list_del(&dso->data.open_entry); + WARN_ONCE(dso__data_open_cnt <= 0, + "DSO data fd counter out of bounds."); + dso__data_open_cnt--; } static int __open_dso(struct dso *dso, struct machine *machine) |