From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6C5F4C43441 for ; Thu, 22 Nov 2018 07:03:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3674220864 for ; Thu, 22 Nov 2018 07:03:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3674220864 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=zytor.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404840AbeKVRl0 (ORCPT ); Thu, 22 Nov 2018 12:41:26 -0500 Received: from terminus.zytor.com ([198.137.202.136]:49643 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726958AbeKVRl0 (ORCPT ); Thu, 22 Nov 2018 12:41:26 -0500 Received: from terminus.zytor.com (localhost [127.0.0.1]) by terminus.zytor.com (8.15.2/8.15.2) with ESMTPS id wAM73Bse3689284 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Wed, 21 Nov 2018 23:03:11 -0800 Received: (from tipbot@localhost) by terminus.zytor.com (8.15.2/8.15.2/Submit) id wAM73BTl3689281; Wed, 21 Nov 2018 23:03:11 -0800 Date: Wed, 21 Nov 2018 23:03:11 -0800 X-Authentication-Warning: terminus.zytor.com: tipbot set sender to tipbot@zytor.com using -f From: tip-bot for Arnaldo Carvalho de Melo Message-ID: Cc: namhyung@kernel.org, linux-kernel@vger.kernel.org, mingo@kernel.org, adrian.hunter@intel.com, acme@redhat.com, wangnan0@huawei.com, dsahern@gmail.com, jolsa@kernel.org, hpa@zytor.com, tglx@linutronix.de Reply-To: hpa@zytor.com, tglx@linutronix.de, dsahern@gmail.com, jolsa@kernel.org, wangnan0@huawei.com, acme@redhat.com, adrian.hunter@intel.com, linux-kernel@vger.kernel.org, mingo@kernel.org, namhyung@kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] perf bpf: Add simple pid_filter class accessible to BPF proggies Git-Commit-ID: 8008aab0962ea68cc00d15e8d7b0637b48837a40 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 8008aab0962ea68cc00d15e8d7b0637b48837a40 Gitweb: https://git.kernel.org/tip/8008aab0962ea68cc00d15e8d7b0637b48837a40 Author: Arnaldo Carvalho de Melo AuthorDate: Tue, 6 Nov 2018 15:50:36 -0300 Committer: Arnaldo Carvalho de Melo CommitDate: Wed, 21 Nov 2018 12:00:31 -0300 perf bpf: Add simple pid_filter class accessible to BPF proggies Will be used in the augmented_raw_syscalls.c to implement 'perf trace --filter-pids'. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: https://lkml.kernel.org/n/tip-9sybmz4vchlbpqwx2am13h9e@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/include/bpf/pid_filter.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/tools/perf/include/bpf/pid_filter.h b/tools/perf/include/bpf/pid_filter.h new file mode 100644 index 000000000000..6e61c4bdf548 --- /dev/null +++ b/tools/perf/include/bpf/pid_filter.h @@ -0,0 +1,21 @@ +// SPDX-License-Identifier: LGPL-2.1 + +#ifndef _PERF_BPF_PID_FILTER_ +#define _PERF_BPF_PID_FILTER_ + +#include + +#define pid_filter(name) pid_map(name, bool) + +static int pid_filter__add(struct bpf_map *pids, pid_t pid) +{ + bool value = true; + return bpf_map_update_elem(pids, &pid, &value, BPF_NOEXIST); +} + +static bool pid_filter__has(struct bpf_map *pids, pid_t pid) +{ + return bpf_map_lookup_elem(pids, &pid) != NULL; +} + +#endif // _PERF_BPF_PID_FILTER_