From cddbff470e3318834af518168d3a917b6e975062 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Sat, 16 Dec 2023 13:29:55 +0100 Subject: devlink: send notifications only if there are listeners Introduce devlink_nl_notify_need() helper and using it to check at the beginning of notification functions to avoid overhead of composing notification messages in case nobody listens. Signed-off-by: Jiri Pirko Signed-off-by: Paolo Abeni --- net/devlink/param.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/devlink/param.c') diff --git a/net/devlink/param.c b/net/devlink/param.c index d74df09311a9..7516b524ffb7 100644 --- a/net/devlink/param.c +++ b/net/devlink/param.c @@ -343,7 +343,7 @@ static void devlink_param_notify(struct devlink *devlink, * will replay the notifications if the params are added/removed * outside of the lifetime of the instance. */ - if (!devl_is_registered(devlink)) + if (!devl_is_registered(devlink) || !devlink_nl_notify_need(devlink)) return; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); -- cgit v1.2.3