lkml.org 
[lkml]   [2021]   [Dec]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH net-next] u64_stats: Disable preemption on 32bit UP+SMP PREEMPT_RT during updates.
From
Date
Hello:

This patch was applied to netdev/net-next.git (master)
by David S. Miller <davem@davemloft.net>:

On Fri, 10 Dec 2021 21:29:59 +0100 you wrote:
> On PREEMPT_RT the seqcount_t for synchronisation is required on 32bit
> architectures even on UP because the softirq (and the threaded IRQ handler) can
> be preempted.
>
> With the seqcount_t for synchronisation, a reader with higher priority can
> preempt the writer and then spin endlessly in read_seqcount_begin() while the
> writer can't make progress.
>
> [...]

Here is the summary with links:
- [net-next] u64_stats: Disable preemption on 32bit UP+SMP PREEMPT_RT during updates.
https://git.kernel.org/netdev/net-next/c/3c118547f87e

You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html


\
 
 \ /
  Last update: 2021-12-13 13:50    [W:0.040 / U:0.124 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site