From: patchwork-bot+netdevbpf@kernel.org
To: Song Liu <song@kernel.org>
Cc: bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net,
andrii@kernel.org, martin.lau@kernel.org, kernel-team@meta.com,
iii@linux.ibm.com, tj@kernel.org
Subject: Re: [PATCH bpf] bpf: Avoid unnecessary -EBUSY from htab_lock_bucket
Date: Fri, 13 Oct 2023 19:40:22 +0000 [thread overview]
Message-ID: <169722602265.5697.11601601955968053647.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20231012055741.3375999-1-song@kernel.org>
Hello:
This patch was applied to bpf/bpf.git (master)
by Andrii Nakryiko <andrii@kernel.org>:
On Wed, 11 Oct 2023 22:57:41 -0700 you wrote:
> htab_lock_bucket uses the following logic to avoid recursion:
>
> 1. preempt_disable();
> 2. check percpu counter htab->map_locked[hash] for recursion;
> 2.1. if map_lock[hash] is already taken, return -BUSY;
> 3. raw_spin_lock_irqsave();
>
> [...]
Here is the summary with links:
- [bpf] bpf: Avoid unnecessary -EBUSY from htab_lock_bucket
https://git.kernel.org/bpf/bpf/c/a307f5a24924
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
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prev parent reply other threads:[~2023-10-13 19:40 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-12 5:57 [PATCH bpf] bpf: Avoid unnecessary -EBUSY from htab_lock_bucket Song Liu
2023-10-13 19:40 ` patchwork-bot+netdevbpf [this message]
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