From patchwork Mon Aug 7 13:03:02 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joel Fernandes X-Patchwork-Id: 798626 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="u7yynUIK"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3xQyRP6Cs6z9sR9 for ; Mon, 7 Aug 2017 23:04:33 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751993AbdHGND2 (ORCPT ); Mon, 7 Aug 2017 09:03:28 -0400 Received: from mail-pf0-f170.google.com ([209.85.192.170]:33310 "EHLO mail-pf0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751508AbdHGNDY (ORCPT ); Mon, 7 Aug 2017 09:03:24 -0400 Received: by mail-pf0-f170.google.com with SMTP id h68so1541365pfk.0 for ; Mon, 07 Aug 2017 06:03:24 -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:in-reply-to:references; bh=5hSoRo/ga9gd/Ae8QdcUXlQkQAYdLboZHvxNMzGrUSs=; b=u7yynUIKhwNjs6IOLwQfsavh2uSJsTIdEi0XSCCfH95mRYHpqvFIO3G5arOkyK5Va4 QuPQ5QX6R1tjlLff6CIqBBekuQU1d/JWyzfkp1Gl++9aejdZTPbpSg1sW3DI2ASH2uaa LC2NrReqNaqRcAAUsLSXUmWEeRwPhR7DgvKYuwmcGnJVhCMJnDMO51y7nnXk24g8+Qih h1655XXshX7K7nt++bw4bR80FcuTO+TovJr17LqLgEFxGwbwcVLjZU9KjGB3TAzgWg34 YoHSyJXJfk/EsJih4rgCfoZTDgm1s7+S67E9Zdr/WDdisP1O1MYyU/mxwcpjZpfrf6vF HQ+g== 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:in-reply-to :references; bh=5hSoRo/ga9gd/Ae8QdcUXlQkQAYdLboZHvxNMzGrUSs=; b=XSdaWfyKX34qpNH+gyHYuSuZIqsSKxgn3KG3fm5Vk46izZcJJk4i7eWN3V421C+wKx OKWCAPcGmrtcNum55kg7I5yCc1CXKWYfnZUsEFVt8Am9bv+Njshlzk2YZFV2PQudnI8X F17dTYbUuKCwp96kfXl6z/Ctpk+LPeGnAhVcJtikQ6JKKhZLV9l5k7IfmmVBZBAmQMSY 2FHIlWR7Rn77JVTJw5M3TMVSDJbDGfaV1t2k+j/dkXyUpUuoRvv3XwQthFoGPXFMqcek AAF+ztWf9aM6yRB+2P8XwMwcl/bQWl1Ui0zJD1ypabG19V8MntGp2IzfG0zvRVcbWC5b xy7w== X-Gm-Message-State: AHYfb5j26mb2jSf+hp2DFhboIShu+SCQXo/LnQpmobWBaygkYmQcMfvU 9iPOsKSC3WHOBljJ X-Received: by 10.98.63.204 with SMTP id z73mr493254pfj.278.1502111003437; Mon, 07 Aug 2017 06:03:23 -0700 (PDT) Received: from joelaf-glaptop0.roam.corp.google.com (c-24-130-92-142.hsd1.ca.comcast.net. [24.130.92.142]) by smtp.gmail.com with ESMTPSA id d28sm2955686pfb.139.2017.08.07.06.03.22 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 07 Aug 2017 06:03:22 -0700 (PDT) From: Joel Fernandes To: linux-kernel@vger.kernel.org Cc: Chenbo Feng , Alison Chaiken , Juri Lelli , Joel Fernandes , Alexei Starovoitov , Daniel Borkmann , netdev@vger.kernel.org (open list:BPF (Safe dynamic programs and tools)) Subject: [PATCH RFC 1/5] samples/bpf: Use getppid instead of getpgrp for array map stress Date: Mon, 7 Aug 2017 06:03:02 -0700 Message-Id: <20170807130306.31530-2-joelaf@google.com> X-Mailer: git-send-email 2.14.0.rc1.383.gd1ce394fe2-goog In-Reply-To: <20170807130306.31530-1-joelaf@google.com> References: <20170807130306.31530-1-joelaf@google.com> 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. Signed-off-by: Joel Fernandes --- 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 245165817fbe..038ffec295cf 100644 --- a/samples/bpf/map_perf_test_kern.c +++ b/samples/bpf/map_perf_test_kern.c @@ -232,7 +232,7 @@ 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 1a8894b5ac51..1e9e68942197 100644 --- a/samples/bpf/map_perf_test_user.c +++ b/samples/bpf/map_perf_test_user.c @@ -232,7 +232,7 @@ 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)); }