Messages in this thread | ![/](/images/icornerl.gif) | | Subject | Re: [PATCH net-next] u64_stats: Disable preemption on 32bit UP+SMP PREEMPT_RT during updates. | From | patchwork-bot+netdevbpf@kernel ... | Date | Mon, 13 Dec 2021 12:50:09 +0000 |
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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
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