linux-kernel - Re: [PATCH v6 6/6] lib/dlock-list: Provide IRQ-safe APIs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20171004224612.GF13815@linux-80c1.suse>
Date:   Wed, 4 Oct 2017 15:46:12 -0700
From:   Davidlohr Bueso <dave@...olabs.net>
To:     Waiman Long <longman@...hat.com>
Cc:     Alexander Viro <viro@...iv.linux.org.uk>, Jan Kara <jack@...e.com>,
        Jeff Layton <jlayton@...chiereds.net>,
        "J. Bruce Fields" <bfields@...ldses.org>,
        Tejun Heo <tj@...nel.org>,
        Christoph Lameter <cl@...ux-foundation.org>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Andi Kleen <andi@...stfloor.org>,
        Dave Chinner <dchinner@...hat.com>,
        Boqun Feng <boqun.feng@...il.com>
Subject: Re: [PATCH v6 6/6] lib/dlock-list: Provide IRQ-safe APIs

On Wed, 04 Oct 2017, Waiman Long wrote:

>To enable the use of dlock-list in an interrupt handler, the following
>new APIs are provided for a irqsafe dlock-list:
>
> - void dlock_list_unlock_irqsafe(struct dlock_list_iter *)
> - void dlock_list_relock_irqsafe(struct dlock_list_iter *)
> - void dlock_list_add_irqsafe(struct dlock_list_node *,
>			       struct dlock_list_head *);
> - void dlock_lists_add_irqsafe(struct dlock_list_node *,
>				struct dlock_list_heads *)
> - void dlock_lists_del_irqsafe(struct dlock_list_node *)
>
>New macros for irqsafe dlock-list:
>
> - dlist_for_each_entry_irqsafe(pos, iter, member)
> - dlist_for_each_entry_safe_irqsafe(pos, n, iter, member)

Instead of adding more calls to the api, could we not just use the
irqsave/restore as part of the regular api?

Thanks,
Davidlohr