From patchwork Sun Sep 3 18:25:46 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joel Fernandes X-Patchwork-Id: 809349 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="plqrfSyf"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3xlhKB3p5rz9sDB for ; Mon, 4 Sep 2017 04:27:09 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752495AbdICS0F (ORCPT ); Sun, 3 Sep 2017 14:26:05 -0400 Received: from mail-pg0-f52.google.com ([74.125.83.52]:34801 "EHLO mail-pg0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751389AbdICS0E (ORCPT ); Sun, 3 Sep 2017 14:26:04 -0400 Received: by mail-pg0-f52.google.com with SMTP id t193so13181126pgc.1 for ; Sun, 03 Sep 2017 11:26:03 -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=Ddxd8StC/jzjd/s58gRiu3+70h4vJEQ/WCuDTX0qtiw=; b=plqrfSyfmU0fBbIITSJzTJy56+J6WWa9IsvuGCCMkYAC+fuf5Cy87HyXUJHsrdiRfq 0bT8/hhKF8Y5SJjqqrrNOUOreprc5sEkSylAi9+XypY60b10Btb+uJKZGpVkVNTcmj2v hp8GOjQK30ld6id/W30agqiX9W+11u9mIcRfSCaQljP7piRtghro0SgUGzldr0PC9pOP ofoPaOkMmAohOJzxsb9Nrd2WFPJtYDcWK5QC2KOEOylxjsX2p+3CkUFsET5bnaLzlJLc nGQr36KlW6iK6AreU0SEKGzv/UOvzwqOAn+MSEUsSCcdbCZIjkHMbCr1g2uPhHmB3k97 KM5w== 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=Ddxd8StC/jzjd/s58gRiu3+70h4vJEQ/WCuDTX0qtiw=; b=HvnRbaNrv0bDGahcIVzLMk5rf9QkjW28XqBny0QI9EaKG5WcRDyn2tOjc03tb5GY67 6S4l6NVektIkTkXz1PL2IHlF2WCaig8FR/Tv8C6t4J1EhXk3tBZUPoNeBJuPwRTMXg8H AClgz5qN/v+N0GuXQB2jkAz/b8XxRKy9UtVk1i8NlbcTEOBZ6kdhyiTbUVKm06u0usXe hNsBcis5Dosy0BmHOpw9ZWJab/BMFt6i3Er5Z2hJmnV9MId7YBaNmjP6/OL/jz9jHcbG LZfAK+Acygjn95987of0NzpbY+j4iOv1ruW5fsT1JPGefwKl/RpzoEM9ACEPJ7eSoLDR 7oiA== X-Gm-Message-State: AHPjjUi/hqj3U2oyt/R2BB45Rj8cJmkjI93ah8yJr09RpGHOQt1w/AJz aBxMLlAYcqI9ph1x X-Google-Smtp-Source: ADKCNb69cO99iFne62NzKZMe4tLel1MfFMSeYIpUuoxgGK6bTL1rwNtX8Y+Oxq/jvd6iPkPXrBh4Sg== X-Received: by 10.99.3.79 with SMTP id 76mr9709021pgd.211.1504463163387; Sun, 03 Sep 2017 11:26:03 -0700 (PDT) Received: from joelaf-glaptop0.roam.corp.google.com (74.sub-70-213-6.myvzw.com. [70.213.6.74]) by smtp.gmail.com with ESMTPSA id p64sm7627440pfi.168.2017.09.03.11.26.01 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sun, 03 Sep 2017 11:26:02 -0700 (PDT) From: Joel Fernandes To: linux-kernel@vger.kernel.org, netdev@vger.kernel.org Cc: kernel-team@android.com, Juri Lelli , Alison Chaiken , Chenbo Feng , Joel Fernandes , Alexei Starovoitov , Daniel Borkmann , David Miller Subject: [PATCH RFC v3 1/4] samples/bpf: Use getppid instead of getpgrp for array map stress Date: Sun, 3 Sep 2017 11:25:46 -0700 Message-Id: <20170903182549.30866-1-joelaf@google.com> X-Mailer: git-send-email 2.14.1.581.gf28d330327-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. CC: Alexei Starovoitov CC: Daniel Borkmann Cc: David Miller 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 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)); }