From patchwork Tue Sep 19 03:57:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pu Lehui X-Patchwork-Id: 13390700 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 51E41CD3432 for ; Tue, 19 Sep 2023 03:57:10 +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=FAQ6YKKrUVhJHn6/tivaGmH+92A51mXhFSKHC/d41ms=; b=lzFUWX/NADFbo1 3AVc7PY1icoacATGEaLIWmy68LPhN2UJ8BZgzeQK/RsuLtQJIFgVSPJmb99sWvj4c3nnVe6MqsCQR TvBePiAGXoQjAOfm7wAq/3d4D/GT/cvZychClE3z42vRFihOL+ul2+4q6wff0zMdWqkCk3dEkjpNz P81uGCzKv06c1XDHEaKZaZtmx609LvueQqE5u3ZKQIlZNkqL6y24WpX2Q1nDVsegHFnNH2octAFQr OD5txa4cAelNv5sm8otZ+K903gogH6D7TP8z+DQLlAF5VQr2us0kQr4XfJLB1QiZCkpzMCKh68gw4 OWG1jpbkESv+dUbfKSvw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qiRrG-00GrlO-2i; 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 1qiRrD-00Grj7-1f for linux-riscv@lists.infradead.org; Tue, 19 Sep 2023 03:57:05 +0000 Received: from mail02.huawei.com (unknown [172.30.67.143]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTP id 4RqSXJ6Rhdz4f3jry 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--.51651S4; Tue, 19 Sep 2023 11:56:53 +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 2/4] riscv, bpf: Using kvcalloc to allocate cache buffer Date: Tue, 19 Sep 2023 11:57:09 +0800 Message-Id: <20230919035711.3297256-3-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--.51651S4 X-Coremail-Antispam: 1UD129KBjvJXoW7WFW3Cw13GrWfGw4Utr4fXwb_yoW8Cw1kpF 4DKrnxA398Zr1kXF40qr4kXFy5J3Wqg3W7GFWUuFWrWF90qrW8Xan5C345urWrCrWFyrWF v3yY9rnxu34kZwUanT9S1TB71UUUUUDqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUmF14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_Jryl82xGYIkIc2 x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0 Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJw A2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq3wAS 0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2 IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0 Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628vn2kIc2 xKxwCY1x0262kKe7AKxVWUtVW8ZwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWU JVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67 kF1VAFwI0_GFv_WrylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY 6xIIjxv20xvEc7CjxVAFwI0_Cr0_Gr1UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42 IY6I8E87Iv67AKxVW8JVWxJwCI42IY6I8E87Iv6xkF7I0E14v26r4UJVWxJrUvcSsGvfC2 KfnxnUUI43ZEXa7VUbH5lUUUUUU== 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_205703_972174_1E8E0376 X-CRM114-Status: GOOD ( 10.16 ) 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 It is unnecessary to allocate continuous physical memory for cache buffer, and when ebpf program is too large, it may cause memory allocation failure. Signed-off-by: Pu Lehui --- arch/riscv/net/bpf_jit_comp64.c | 4 ++-- arch/riscv/net/bpf_jit_core.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/riscv/net/bpf_jit_comp64.c b/arch/riscv/net/bpf_jit_comp64.c index 8423f4ddf..57535cfe1 100644 --- a/arch/riscv/net/bpf_jit_comp64.c +++ b/arch/riscv/net/bpf_jit_comp64.c @@ -906,7 +906,7 @@ static int __arch_prepare_bpf_trampoline(struct bpf_tramp_image *im, } if (fmod_ret->nr_links) { - branches_off = kcalloc(fmod_ret->nr_links, sizeof(int), GFP_KERNEL); + branches_off = kvcalloc(fmod_ret->nr_links, sizeof(int), GFP_KERNEL); if (!branches_off) return -ENOMEM; @@ -993,7 +993,7 @@ static int __arch_prepare_bpf_trampoline(struct bpf_tramp_image *im, ret = ctx->ninsns; out: - kfree(branches_off); + kvfree(branches_off); return ret; } diff --git a/arch/riscv/net/bpf_jit_core.c b/arch/riscv/net/bpf_jit_core.c index dd00103a2..d9c82537d 100644 --- a/arch/riscv/net/bpf_jit_core.c +++ b/arch/riscv/net/bpf_jit_core.c @@ -78,7 +78,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog) } ctx->prog = prog; - ctx->offset = kcalloc(prog->len, sizeof(int), GFP_KERNEL); + ctx->offset = kvcalloc(prog->len, sizeof(int), GFP_KERNEL); if (!ctx->offset) { prog = orig_prog; goto out_offset; @@ -170,7 +170,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog) ctx->offset[i] = ninsns_rvoff(ctx->offset[i]); bpf_prog_fill_jited_linfo(prog, ctx->offset); out_offset: - kfree(ctx->offset); + kvfree(ctx->offset); kfree(jit_data); prog->aux->jit_data = NULL; }