linux-kernel - Re: [PATCH v2] smp: Wake ksoftirqd on PREEMPT_RT instead do

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] [day] [month] [year] [list]

Message-ID: <20211026114823.pto26636nzolhint@linutronix.de>
Date:   Tue, 26 Oct 2021 13:48:23 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     Christoph Hellwig <hch@...radead.org>,
        linux-kernel@...r.kernel.org, Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH v2] smp: Wake ksoftirqd on PREEMPT_RT instead
 do_softirq().

On 2021-09-27 09:38:16 [+0200], To Thomas Gleixner wrote:
> The softirq implementation on PREEMPT_RT does not provide do_softirq().
> The other user of do_softirq() is replaced with a local_bh_disable()
> + enable() around the possible raise-softirq invocation. This can not be
> done here because migration_cpu_stop() is invoked with disabled
> preemption.
> 
> Wake the softirq thread on PREEMPT_RT if there are any pending softirqs.
> 
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
> ---
> v1…v2: Drop an empty line.

ping.

Sebastian