diff options
Diffstat (limited to 'tools/perf/util/bpf_lock_contention.c')
| -rw-r--r-- | tools/perf/util/bpf_lock_contention.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/tools/perf/util/bpf_lock_contention.c b/tools/perf/util/bpf_lock_contention.c index 6545bee65347..ef5323c78ffc 100644 --- a/tools/perf/util/bpf_lock_contention.c +++ b/tools/perf/util/bpf_lock_contention.c @@ -41,6 +41,7 @@ int lock_contention_prepare(struct lock_contention *con) return -1; } + bpf_map__set_value_size(skel->maps.stacks, con->max_stack * sizeof(u64)); bpf_map__set_max_entries(skel->maps.stacks, con->map_nr_entries); bpf_map__set_max_entries(skel->maps.lock_stat, con->map_nr_entries); @@ -115,7 +116,7 @@ int lock_contention_read(struct lock_contention *con) struct lock_contention_data data; struct lock_stat *st; struct machine *machine = con->machine; - u64 stack_trace[CONTENTION_STACK_DEPTH]; + u64 stack_trace[con->max_stack]; fd = bpf_map__fd(skel->maps.lock_stat); stack = bpf_map__fd(skel->maps.stacks); @@ -146,9 +147,9 @@ int lock_contention_read(struct lock_contention *con) bpf_map_lookup_elem(stack, &key, stack_trace); /* skip BPF + lock internal functions */ - idx = CONTENTION_STACK_SKIP; + idx = con->stack_skip; while (is_lock_function(machine, stack_trace[idx]) && - idx < CONTENTION_STACK_DEPTH - 1) + idx < con->max_stack - 1) idx++; st->addr = stack_trace[idx]; |