diff --git a/tools/testing/selftests/bpf/veristat.c b/tools/testing/selftests/bpf/veristat.c index c9c257784ee3..5c0ec3edce72 100644 --- a/tools/testing/selftests/bpf/veristat.c +++ b/tools/testing/selftests/bpf/veristat.c @@ -993,13 +993,15 @@ static void free_verif_stats(struct verif_stats *stats, size_t stat_cnt) static char verif_log_buf[64 * 1024]; -#define MAX_PARSED_LOG_LINES 100 +/* Keep room for all 256 subprogram records and trailing statistics. */ +#define MAX_PARSED_LOG_LINES 300 static int parse_verif_log(char * const buf, size_t buf_sz, struct verif_stats *s) { const char *cur; - int pos, lines, sub_stack, cnt = 0; - char *state = NULL, *token, stack[512]; + long sub_stack; + int pos, lines, cnt = 0; + char *state = NULL, *token, stack[512] = {}; buf[buf_sz - 1] = '\0'; @@ -1025,11 +1027,24 @@ static int parse_verif_log(char * const buf, size_t buf_sz, struct verif_stats * &s->stats[MARK_READ_MAX_LEN])) continue; + /* + * New kernels emit one "subprog () " record + * per subprogram with the stack depth at the end, while old + * kernels emit a single "stack depth max " + * line. Match both formats so veristat works against either + * kernel. + */ + if (sscanf(cur, "stack depth max %ld", &s->stats[MAX_STACK]) == 1) + continue; + if (sscanf(cur, "subprog %*d %*s %*s insns_self %*d insns_total %*d stack %ld", &sub_stack) == 1) { + s->stats[STACK] += sub_stack; + continue; + } if (2 == sscanf(cur, "stack depth %511s max %ld", stack, &s->stats[MAX_STACK])) continue; } while ((token = strtok_r(cnt++ ? NULL : stack, "+", &state))) { - if (sscanf(token, "%d", &sub_stack) == 0) + if (sscanf(token, "%ld", &sub_stack) == 0) break; s->stats[STACK] += sub_stack; }