Re: [PATCH 09/54] perf tools: Enable passing event to BPF object

From: Jiri Olsa
Date: Fri Feb 12 2016 - 09:05:33 EST


On Fri, Feb 05, 2016 at 02:01:34PM +0000, Wang Nan wrote:

SNIP

> +
> + op = bpf_map__add_newop(map);
> + if (IS_ERR(op))
> + return PTR_ERR(op);
> + op->op_type = BPF_MAP_OP_SET_EVSEL;
> + op->v.evsel = evsel;
> + return 0;
> +}
> +
> +static int
> +bpf_map__config_event(struct bpf_map *map,
> + struct parse_events_term *term,
> + struct perf_evlist *evlist)
> +{
> + if (!term->err_val) {
> + pr_debug("Config value not set\n");
> + return -BPF_LOADER_ERRNO__OBJCONF_CONF;
> + }
> +
> + if (!term->type_val == PARSE_EVENTS__TERM_TYPE_STR) {

this failed to compiled due to

CC util/bpf-loader.o
util/bpf-loader.c: In function âbpf_map__config_eventâ:
util/bpf-loader.c:1013:22: error: logical not is only applied to the left hand side of comparison [-Werror=logical-not-parentheses]
if (!term->type_val == PARSE_EVENTS__TERM_TYPE_STR) {
^
cc1: all warnings being treated as errors


jirka