On Tue, Aug 04, 2015 at 08:58:14AM +0000, Kaixu Xia wrote:
> +static void *perf_event_fd_array_get_ptr(struct bpf_map *map, int fd)
> +{
> + struct perf_event *event;
> + struct perf_event_attr *attr;
> +
> + event = perf_event_get(fd);
> + if (IS_ERR(event))
> + return event;
> +
> + attr = perf_event_attrs(event);
> + if (IS_ERR(attr)) {
perf_event_release_kernel(event);
> + return attr;
}
And maybe I should do a tree wide:
s/perf_event_release_kernel/perf_event_put/, but that's not too
important and can be done at any time.
> +
> + if (attr->type != PERF_TYPE_RAW &&
> + attr->type != PERF_TYPE_HARDWARE) {
> + perf_event_release_kernel(event);
> + return ERR_PTR(-EINVAL);
> + }
> + return event;
> +}
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