From patchwork Tue Sep 19 03:57:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pu Lehui X-Patchwork-Id: 13390701 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A4584CD37B4 for ; Tue, 19 Sep 2023 03:57:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ZOBnrc1dpTHIb+7ojyzKu1NeFFYHtbXveGYcgv0N4fc=; b=MOEuGOZeF/Wt0S VPyxGCPH+XDZHeMh6C9YZyohtdJRobMwf3kOHKocFdlHTH03LfyPh39DrwLk4iS13xMq/xmKEMaVp a8Fbd0eQGuB7QW5IS3RQntm5V/D0A/ZkEP4dRRtvtU6oSPeVeNs+WzZE6TgoA8CAVe8xDgIcU4qTq Zua03flfND45ahxXMyy+UnEUFK9zLXJZOLIJIWDvm2gdRVLMtfs083Y3W7NLj5eDabdTQ+2YmS0Is dJ543q4nqtCN2HNqp2iIR/s/RqWQw9Ldg81VrXxk6I/PdlSvPUElkPIimbIeCR+R2SfjWh44B0Brf rukcqZ9Ls1TudQr8sFOA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qiRrG-00GrlC-0k; Tue, 19 Sep 2023 03:57:06 +0000 Received: from dggsgout12.his.huawei.com ([45.249.212.56]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qiRrC-00Grj5-1i for linux-riscv@lists.infradead.org; Tue, 19 Sep 2023 03:57:04 +0000 Received: from mail02.huawei.com (unknown [172.30.67.143]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTP id 4RqSXJ5m3tz4f3jrk for ; Tue, 19 Sep 2023 11:56:48 +0800 (CST) Received: from localhost.localdomain (unknown [10.67.175.61]) by APP4 (Coremail) with SMTP id gCh0CgBH09IDHAlldnxXAw--.51651S3; Tue, 19 Sep 2023 11:56:52 +0800 (CST) From: Pu Lehui To: bpf@vger.kernel.org, linux-riscv@lists.infradead.org, netdev@vger.kernel.org Cc: =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Palmer Dabbelt , Conor Dooley , Luke Nelson , Pu Lehui , Pu Lehui Subject: [PATCH bpf-next 1/4] riscv, bpf: Remove redundant ctx->offset initialization Date: Tue, 19 Sep 2023 11:57:08 +0800 Message-Id: <20230919035711.3297256-2-pulehui@huaweicloud.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230919035711.3297256-1-pulehui@huaweicloud.com> References: <20230919035711.3297256-1-pulehui@huaweicloud.com> MIME-Version: 1.0 X-CM-TRANSID: gCh0CgBH09IDHAlldnxXAw--.51651S3 X-Coremail-Antispam: 1UD129KBjvdXoW7XFW8Jr15KF1fuF45XrW5KFg_yoW3Arg_C3 4xta4fXrWfJa1qkryj9w4rWr1qkw1rtFyrur1fXry5Can0qw1vy393try7Gry7Zrs8ZrWx WFZ7J3yxZw4YgjkaLaAFLSUrUUUUbb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbkxFF20E14v26rWj6s0DM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28IrcIa0xkI8VA2jI8067AKxVWUGwA2048vs2IY02 0Ec7CjxVAFwI0_Gr0_Xr1l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxSw2x7M28EF7xv wVC0I7IYx2IY67AKxVWDJVCq3wA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxVW8Jr0_Cr1UM2 8EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s0DM2AI xVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xIIjxv20x vE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Yz7v_Jr0_Gr1lF7xv r2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7M4IIrI8v6xkF7I0E8cxan2IY04 v7MxkF7I0En4kS14v26r1q6r43MxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j 6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7 AF67AKxVW8ZVWrXwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE 2Ix0cI8IcVCY1x0267AKxVW8JVWxJwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcV C2z280aVAFwI0_Gr0_Cr1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2Kfnx nUUI43ZEXa7VUjrHUDUUUUU== X-CM-SenderInfo: psxovxtxl6x35dzhxuhorxvhhfrp/ X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230918_205702_789925_50866B26 X-CRM114-Status: UNSURE ( 7.34 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Pu Lehui There is no gain in initializing ctx->offset and prev_insns, and ctx->offset is already zero-initialized. Let's remove this code. Signed-off-by: Pu Lehui --- arch/riscv/net/bpf_jit_core.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/arch/riscv/net/bpf_jit_core.c b/arch/riscv/net/bpf_jit_core.c index 7a26a3e1c..dd00103a2 100644 --- a/arch/riscv/net/bpf_jit_core.c +++ b/arch/riscv/net/bpf_jit_core.c @@ -89,11 +89,6 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog) goto out_offset; } - for (i = 0; i < prog->len; i++) { - prev_ninsns += 32; - ctx->offset[i] = prev_ninsns; - } - for (i = 0; i < NR_JIT_ITERATIONS; i++) { pass++; ctx->ninsns = 0;