diff options
Diffstat (limited to 'tools/perf/util/unwind.c')
| -rw-r--r-- | tools/perf/util/unwind.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/tools/perf/util/unwind.c b/tools/perf/util/unwind.c index 5390d0b8862a..0efd5393de85 100644 --- a/tools/perf/util/unwind.c +++ b/tools/perf/util/unwind.c @@ -559,7 +559,7 @@ static unw_accessors_t accessors = { }; static int get_entries(struct unwind_info *ui, unwind_entry_cb_t cb, - void *arg) + void *arg, int max_stack) { unw_addr_space_t addr_space; unw_cursor_t c; @@ -575,7 +575,7 @@ static int get_entries(struct unwind_info *ui, unwind_entry_cb_t cb, if (ret) display_error(ret); - while (!ret && (unw_step(&c) > 0)) { + while (!ret && (unw_step(&c) > 0) && max_stack--) { unw_word_t ip; unw_get_reg(&c, UNW_REG_IP, &ip); @@ -588,7 +588,8 @@ static int get_entries(struct unwind_info *ui, unwind_entry_cb_t cb, int unwind__get_entries(unwind_entry_cb_t cb, void *arg, struct machine *machine, struct thread *thread, - u64 sample_uregs, struct perf_sample *data) + u64 sample_uregs, struct perf_sample *data, + int max_stack) { unw_word_t ip; struct unwind_info ui = { @@ -610,5 +611,5 @@ int unwind__get_entries(unwind_entry_cb_t cb, void *arg, if (ret) return -ENOMEM; - return get_entries(&ui, cb, arg); + return get_entries(&ui, cb, arg, max_stack); } |