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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,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 E7297C4321D for ; Sat, 18 Aug 2018 11:39:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A8DEA2188F for ; Sat, 18 Aug 2018 11:39:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A8DEA2188F 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 S1726617AbeHROqp (ORCPT ); Sat, 18 Aug 2018 10:46:45 -0400 Received: from terminus.zytor.com ([198.137.202.136]:45955 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726266AbeHROqp (ORCPT ); Sat, 18 Aug 2018 10:46:45 -0400 Received: from terminus.zytor.com (localhost [127.0.0.1]) by terminus.zytor.com (8.15.2/8.15.2) with ESMTPS id w7IBdDC61287565 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Sat, 18 Aug 2018 04:39:13 -0700 Received: (from tipbot@localhost) by terminus.zytor.com (8.15.2/8.15.2/Submit) id w7IBdD441287562; Sat, 18 Aug 2018 04:39:13 -0700 Date: Sat, 18 Aug 2018 04:39:13 -0700 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: dsahern@gmail.com, adrian.hunter@intel.com, tglx@linutronix.de, jolsa@kernel.org, mingo@kernel.org, namhyung@kernel.org, linux-kernel@vger.kernel.org, wangnan0@huawei.com, acme@redhat.com, hpa@zytor.com Reply-To: acme@redhat.com, hpa@zytor.com, linux-kernel@vger.kernel.org, wangnan0@huawei.com, jolsa@kernel.org, namhyung@kernel.org, mingo@kernel.org, dsahern@gmail.com, tglx@linutronix.de, adrian.hunter@intel.com To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/urgent] perf bpf: Add wrappers to BPF_FUNC_probe_read(_str) functions Git-Commit-ID: 8fa25f303adfed6eab921db8e242e59dd0b3b004 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: 8fa25f303adfed6eab921db8e242e59dd0b3b004 Gitweb: https://git.kernel.org/tip/8fa25f303adfed6eab921db8e242e59dd0b3b004 Author: Arnaldo Carvalho de Melo AuthorDate: Tue, 7 Aug 2018 15:10:19 -0300 Committer: Arnaldo Carvalho de Melo CommitDate: Wed, 8 Aug 2018 15:55:57 -0300 perf bpf: Add wrappers to BPF_FUNC_probe_read(_str) functions Will be used shortly in the augmented syscalls work together with a PERF_COUNT_SW_BPF_OUTPUT software event to insert syscalls + pointer contents in the perf ring buffer, to be consumed by 'perf trace' beautifiers. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: https://lkml.kernel.org/n/tip-ajlkpz4cd688ulx1u30htkj3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/include/bpf/bpf.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/perf/include/bpf/bpf.h b/tools/perf/include/bpf/bpf.h index 1f632b56bb34..47897d65e799 100644 --- a/tools/perf/include/bpf/bpf.h +++ b/tools/perf/include/bpf/bpf.h @@ -30,4 +30,7 @@ struct bpf_map { char _license[] SEC("license") = #name; \ int _version SEC("version") = LINUX_VERSION_CODE; +static int (*probe_read)(void *dst, int size, const void *unsafe_addr) = (void *)BPF_FUNC_probe_read; +static int (*probe_read_str)(void *dst, int size, const void *unsafe_addr) = (void *)BPF_FUNC_probe_read_str; + #endif /* _PERF_BPF_H */