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Fri, 20 Oct 2023 17:30:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1697823025; bh=5ut1L1541Y4ftwvkK1hGaiM6h4nfhAd+GjYGCoEpZZk=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=ohlO8zYWZHYxY3N6tuKOxLxZBC6cHJNqSParfmxNEgHP/wphEX2pAYPtqzzX+wyXd uwd4U8n9mQYMVCF2sgp5IaERUF259btLix7VtKMvopDK6C+J4F7sfDi4ftL8HH/nYj jWP52L46YN7ZoYdJ+AP3HvAS9Qq9S/T0KWPWqotXdu+qm0eeN57ZRe4ZWBWnnEKDqD CXb0O+s3poxYhao58UrGj1fLY6vHdX3RIIaUcDjRa2R4LyNBWE+vB2EVbqNie47Q7x fDGNnuBEoeFp5q1Es1YGcCLBhm+cQqT1mDOwq6cqPZQjFwm9RN8qT9W4cRN9tc14cU ypVX+WF/RI+hQ== Received: from aws-us-west-2-korg-oddjob-1.ci.codeaurora.org (localhost.localdomain [127.0.0.1]) by aws-us-west-2-korg-oddjob-1.ci.codeaurora.org (Postfix) with ESMTP id 0624EC595D7; Fri, 20 Oct 2023 17:30:25 +0000 (UTC) Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH bpf-next v3 0/7] bpf: Fixes for per-cpu kptr From: patchwork-bot+netdevbpf@kernel.org Message-Id: <169782302501.9988.4889931337296268116.git-patchwork-notify@kernel.org> Date: Fri, 20 Oct 2023 17:30:25 +0000 References: <20231020133202.4043247-1-houtao@huaweicloud.com> In-Reply-To: <20231020133202.4043247-1-houtao@huaweicloud.com> To: Hou Tao Cc: bpf@vger.kernel.org, linux-mm@kvack.org, martin.lau@linux.dev, alexei.starovoitov@gmail.com, andrii@kernel.org, song@kernel.org, haoluo@google.com, yonghong.song@linux.dev, daniel@iogearbox.net, kpsingh@kernel.org, sdf@google.com, jolsa@kernel.org, john.fastabend@gmail.com, houtao1@huawei.com, dennis@kernel.org, tj@kernel.org, cl@linux.com, akpm@linux-foundation.org X-Rspamd-Queue-Id: 8E01340009 X-Rspam-User: X-Stat-Signature: ph9szrzs9uzfg15wc8kb88x9h1pjb9u4 X-Rspamd-Server: rspam01 X-HE-Tag: 1697823029-803126 X-HE-Meta: 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 EWCsopmr VCGepKjga3r5kaX/UlxtVK4e1HOV7OMUVFSJ0iT39J+m521RZ028X4lei4+62yDf5kZuK9/IFQmCTtwWaECHEEyq5Tx/e7c24gT5jt+XUX25JFb+PUvwnvxtd+CSbQssuYz+4kA0/6oVrkVswFrxyNbeZbtgJ+WWH4Dnp2VSa1bu3X1zCXXd43y+/5FVaUynKa0yCl9kLi9M7XUUGdvwvF6ExMdZ4aq2NLQP00U5XSt8XSM+86upJo0sgRvbs9P6n2oWqYHpTvhBsgY4UhKC5/kW3rNLDu1SyZDjAfUpQnWVpIcKefhB/mvl18tPMpcdfcs9IkytFLzNyO7vi6BiFXF+P25R9MuRHnTYIQiwpW9/aoa+Rk7QQu/vVzg== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hello: This series was applied to bpf/bpf-next.git (master) by Alexei Starovoitov : On Fri, 20 Oct 2023 21:31:55 +0800 you wrote: > From: Hou Tao > > Hi, > > The patchset aims to fix the problems found in the review of per-cpu > kptr patch-set [0]. Patch #1 moves pcpu_lock after the invocation of > pcpu_chunk_addr_search() and it is a micro-optimization for > free_percpu(). The reason includes it in the patch is that the same > logic is used in newly-added API pcpu_alloc_size(). Patch #2 introduces > pcpu_alloc_size() for dynamic per-cpu area. Patch #2 and #3 use > pcpu_alloc_size() to check whether or not unit_size matches with the > size of underlying per-cpu area and to select a matching bpf_mem_cache. > Patch #4 fixes the freeing of per-cpu kptr when these kptrs are freed by > map destruction. The last patch adds test cases for these problems. > > [...] Here is the summary with links: - [bpf-next,v3,1/7] mm/percpu.c: don't acquire pcpu_lock for pcpu_chunk_addr_search() https://git.kernel.org/bpf/bpf-next/c/394e6869f018 - [bpf-next,v3,2/7] mm/percpu.c: introduce pcpu_alloc_size() https://git.kernel.org/bpf/bpf-next/c/5897c912a66b - [bpf-next,v3,3/7] bpf: Re-enable unit_size checking for global per-cpu allocator https://git.kernel.org/bpf/bpf-next/c/fd496368ab75 - [bpf-next,v3,4/7] bpf: Use pcpu_alloc_size() in bpf_mem_free{_rcu}() https://git.kernel.org/bpf/bpf-next/c/f6bbb0c00203 - [bpf-next,v3,5/7] bpf: Move the declaration of __bpf_obj_drop_impl() to bpf.h https://git.kernel.org/bpf/bpf-next/c/c999470ea070 - [bpf-next,v3,6/7] bpf: Use bpf_global_percpu_ma for per-cpu kptr in __bpf_obj_drop_impl() https://git.kernel.org/bpf/bpf-next/c/710701945f97 - [bpf-next,v3,7/7] selftests/bpf: Add more test cases for bpf memory allocator https://git.kernel.org/bpf/bpf-next/c/30c44ceada16 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html