linux-kernel - Re: [PATCH] net: core: devlink.c: Use built-in RCU list checking

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Message-ID: <20200225130646.GD17869@nanopsycho>
Date:   Tue, 25 Feb 2020 14:06:46 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     madhuparnabhowmik10@...il.com
Cc:     jiri@...lanox.com, davem@...emloft.net, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, joel@...lfernandes.org,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        frextrite@...il.com, paulmck@...nel.org
Subject: Re: [PATCH] net: core: devlink.c: Use built-in RCU list checking

Tue, Feb 25, 2020 at 01:27:45PM CET, madhuparnabhowmik10@...il.com wrote:
>From: Madhuparna Bhowmik <madhuparnabhowmik10@...il.com>
>
>list_for_each_entry_rcu() has built-in RCU and lock checking.
>
>Pass cond argument to list_for_each_entry_rcu() to silence
>false lockdep warning when CONFIG_PROVE_RCU_LIST is enabled.
>
>The devlink->lock is held when devlink_dpipe_table_find()
>is called in non RCU read side section. Therefore, pass struct devlink
>to devlink_dpipe_table_find() for lockdep checking.
>
>Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10@...il.com>

Reviewed-by: Jiri Pirko <jiri@...lanox.com>