From patchwork Wed Sep 20 16:11:56 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joel Fernandes X-Patchwork-Id: 816337 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.b="EIZ05XXP"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3xy4Xr5CDQz9s7c for ; Thu, 21 Sep 2017 02:13:16 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751902AbdITQMN (ORCPT ); Wed, 20 Sep 2017 12:12:13 -0400 Received: from mail-pg0-f50.google.com ([74.125.83.50]:49543 "EHLO mail-pg0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751858AbdITQMM (ORCPT ); Wed, 20 Sep 2017 12:12:12 -0400 Received: by mail-pg0-f50.google.com with SMTP id m30so1934993pgn.6 for ; Wed, 20 Sep 2017 09:12:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=qul5PsmRgWLTfCC0ZEtP2dfrzE3wiv+yVs0WI8rTZ04=; b=EIZ05XXPCMhkXwKLhe5+k6Q5gcnBNayL2Ye1H+eWEox3rwKvSwcNW8iaglP5CAemDc vaXQtVR7AVmwZkfXlWjtF7c0B7QP/2dp/TZP09xIhXonCEUflaY2zHYCwke8OBtkdH0i k29qOhGpgGJa/UdbIgwKRU5o5MN5OWKtpaRDS39Zw2B+17DtaFCX7fRBOABQBdt0nvr/ 7jKvib/hOiZa2XFtFAtCYENq5BAG/3Nn/sMvOsBo+0cgwkT2I5RzLSeIca86/tkoyf8W XCfsvrIRO/hJc1e2JgaxuZAwInUPCb9hX3J6FfxVHzuOW0HrYGQNGcFetG9HF5pnuAUI 8ytQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=qul5PsmRgWLTfCC0ZEtP2dfrzE3wiv+yVs0WI8rTZ04=; b=hHUZl5QbwHFXahyVVfmUDgrWs9RiJ/eDGncSZPnOKPUsHhMLn2QET5oC3tHd0SfXW1 qCkz7koBHhQhjaZ7XlmZVhaTF+vUn/6Cp1jxjaKdGZ/GGBi6sRgyvvPAG12EgnRHJ5tK tGxImb4XO9IOFWuJ/57I+gc1hyC+kzSvoiYMEiVKfQzsIEJb4VUZNNHWFCeWgo2YDSa2 ei3u5WjMyg/fR0XnZH/A+WXh+Cll+vOIhrPUvkrmgvhfqPkhNIuiZ39PI4PDy0a7ewy5 kI/svp9u4e2yVrj3xHGZVsQvFkCr75UFnb/h1nLeGSuh4jCtdILdaeEe9t/1nOrnz1Kp SUWA== X-Gm-Message-State: AHPjjUg9Ov5gM1wX4pPV5qMdQeu51SoZWYJLWsGiG7BxnBRGYkB6n83k CMEQ4oKwbK/njD3/IYLpSkN9Hg== X-Google-Smtp-Source: AOwi7QCzDoMYVGOFk/tLoQUFucudYLe29jFRPWEtqCbXp7DArKndxy5uiEoOVcAKjfDv2XA1AZxXgw== X-Received: by 10.99.151.2 with SMTP id n2mr2784297pge.315.1505923931246; Wed, 20 Sep 2017 09:12:11 -0700 (PDT) Received: from joelaf-glaptop0.roam.corp.google.com ([73.93.152.222]) by smtp.gmail.com with ESMTPSA id x9sm8767200pfk.40.2017.09.20.09.12.09 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 20 Sep 2017 09:12:10 -0700 (PDT) From: Joel Fernandes To: linux-kernel@vger.kernel.org Cc: netdev@vger.kernel.org, alison@she-devel.com, juri.lelli@arm.com, fengc@google.com, daniel@iogearbox.net, davem@davemloft.net, ast@kernel.org, kernel-team@android.com, Joel Fernandes Subject: [PATCH v4 1/4] samples/bpf: Use getppid instead of getpgrp for array map stress Date: Wed, 20 Sep 2017 09:11:56 -0700 Message-Id: <20170920161159.25747-1-joelaf@google.com> X-Mailer: git-send-email 2.14.1.821.g8fa685d3b7-goog Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org When cross-compiling the bpf sample map_perf_test for aarch64, I find that __NR_getpgrp is undefined. This causes build errors. This syscall is deprecated and requires defining __ARCH_WANT_SYSCALL_DEPRECATED. To avoid having to define that, just use a different syscall (getppid) for the array map stress test. Acked-by: Alexei Starovoitov Signed-off-by: Joel Fernandes Acked-by: Daniel Borkmann --- samples/bpf/map_perf_test_kern.c | 2 +- samples/bpf/map_perf_test_user.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/samples/bpf/map_perf_test_kern.c b/samples/bpf/map_perf_test_kern.c index 098c857f1eda..2b2ffb97018b 100644 --- a/samples/bpf/map_perf_test_kern.c +++ b/samples/bpf/map_perf_test_kern.c @@ -266,7 +266,7 @@ int stress_hash_map_lookup(struct pt_regs *ctx) return 0; } -SEC("kprobe/sys_getpgrp") +SEC("kprobe/sys_getppid") int stress_array_map_lookup(struct pt_regs *ctx) { u32 key = 1, i; diff --git a/samples/bpf/map_perf_test_user.c b/samples/bpf/map_perf_test_user.c index f388254896f6..a0310fc70057 100644 --- a/samples/bpf/map_perf_test_user.c +++ b/samples/bpf/map_perf_test_user.c @@ -282,7 +282,7 @@ static void test_array_lookup(int cpu) start_time = time_get_ns(); for (i = 0; i < max_cnt; i++) - syscall(__NR_getpgrp, 0); + syscall(__NR_getppid, 0); printf("%d:array_lookup %lld lookups per sec\n", cpu, max_cnt * 1000000000ll * 64 / (time_get_ns() - start_time)); }