linux-kernel - Re: [PATCH net-next RFC v3 02/14] devlink: Add reload actions counters

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Date:   Tue, 1 Sep 2020 17:01:27 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Moshe Shemesh <moshe@...dia.com>
Cc:     Jiri Pirko <jiri@...nulli.us>, Moshe Shemesh <moshe@...lanox.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jiri Pirko <jiri@...lanox.com>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next RFC v3 02/14] devlink: Add reload actions
 counters

On Tue, 1 Sep 2020 22:05:36 +0300 Moshe Shemesh wrote:
> >> +void devlink_reload_actions_cnts_update(struct devlink *devlink, unsigned long actions_done)
> >> +{
> >> +	int action;
> >> +
> >> +	for (action = 0; action < DEVLINK_RELOAD_ACTION_MAX; action++) {
> >> +		if (!test_bit(action, &actions_done))
> >> +			continue;
> >> +		devlink->reload_actions_cnts[action]++;
> >> +	}
> >> +}
> >> +EXPORT_SYMBOL_GPL(devlink_reload_actions_cnts_update);  
> > I don't follow why this is an exported symbol if you only use it from
> > this .c. Looks like a leftover...
> >  
> Not leftover, in the commit message I notified and explained why I 
> exposed it.

We should generate devlink notifications on this event (down and up)
so the counters don't have to be exposed to drivers. We need a more
thorough API.