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Fri, 29 Jul 2022 08:23:21 -0700 (PDT) From: Yafang Shao To: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, kafai@fb.com, songliubraving@fb.com, yhs@fb.com, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com, haoluo@google.com, jolsa@kernel.org, hannes@cmpxchg.org, mhocko@kernel.org, roman.gushchin@linux.dev, shakeelb@google.com, songmuchun@bytedance.com, akpm@linux-foundation.org Cc: netdev@vger.kernel.org, bpf@vger.kernel.org, linux-mm@kvack.org, Yafang Shao Subject: [RFC PATCH bpf-next 01/15] bpf: Remove unneeded memset in queue_stack_map creation Date: Fri, 29 Jul 2022 15:23:02 +0000 Message-Id: <20220729152316.58205-2-laoar.shao@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220729152316.58205-1-laoar.shao@gmail.com> References: <20220729152316.58205-1-laoar.shao@gmail.com> MIME-Version: 1.0 ARC-Authentication-Results: i=1; imf01.hostedemail.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=MR6BnmL0; spf=pass (imf01.hostedemail.com: domain of laoar.shao@gmail.com designates 209.85.214.173 as permitted sender) smtp.mailfrom=laoar.shao@gmail.com; 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spf=pass (imf01.hostedemail.com: domain of laoar.shao@gmail.com designates 209.85.214.173 as permitted sender) smtp.mailfrom=laoar.shao@gmail.com; dmarc=pass (policy=none) header.from=gmail.com X-Stat-Signature: karoibnp68o19gfksyrdgs3pnz4k5i9n X-Rspamd-Queue-Id: DCC5F400D2 X-HE-Tag: 1659108203-464626 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: __GFP_ZERO will clear the memory, so we don't need to memset it. Signed-off-by: Yafang Shao --- kernel/bpf/queue_stack_maps.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/kernel/bpf/queue_stack_maps.c b/kernel/bpf/queue_stack_maps.c index a1c0794ae49d..8a5e060de63b 100644 --- a/kernel/bpf/queue_stack_maps.c +++ b/kernel/bpf/queue_stack_maps.c @@ -78,8 +78,6 @@ static struct bpf_map *queue_stack_map_alloc(union bpf_attr *attr) if (!qs) return ERR_PTR(-ENOMEM); - memset(qs, 0, sizeof(*qs)); - bpf_map_init_from_attr(&qs->map, attr); qs->size = size;