On Wed, 10 Jan 2018 17:12:20 +0800 Jeff Guo <[email protected]> wrote:
> +static int
> +dev_monitor_fd_new(void)
> +{
> +
> + int uevent_fd;
> +
> + uevent_fd = socket(PF_NETLINK, SOCK_RAW | SOCK_CLOEXEC |
> + SOCK_NONBLOCK,
> + NETLINK_KOBJECT_UEVENT);
> + if (uevent_fd < 0) {
If you used a blocking socket, then epoll would not be necessary.
There is one netlink socket for whole system, and the thread is only
reading from one fd.
