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=-9.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,USER_AGENT_GIT 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 0535AC169C4 for ; Fri, 1 Feb 2019 03:07:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C39A72184A for ; Fri, 1 Feb 2019 03:07:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ej15mUwp" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728611AbfBADG7 (ORCPT ); Thu, 31 Jan 2019 22:06:59 -0500 Received: from mail-pg1-f196.google.com ([209.85.215.196]:38901 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725831AbfBADG6 (ORCPT ); Thu, 31 Jan 2019 22:06:58 -0500 Received: by mail-pg1-f196.google.com with SMTP id g189so2262574pgc.5 for ; Thu, 31 Jan 2019 19:06:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=kFIyPwvmY6Z8CaxQVGctlcM25ld4uiqRnEntk+fHjBU=; b=ej15mUwppB6AS7nFNg9C3thXyyhlLMXsk7VqOWPN22dPJggNb2eqUQmxJqiO9Tm/s8 NLcuf8jIqNXOJDjY8Ber+5ME8wpQKvfD4xRNCxOeu+PiKA/rLRTN6jcj5dZqOz5FYFTI C95O0dpNGsHqt/MD05719EeLLLVAF3u2Hqpttn3Or9Py/Q5QIU09RLwGgI80rLq5TmnF PeOS50STHKEQupLEp1weU7/0ynx+Ava1j/50UGJL+T4zk9pJ9ZSuMAToPYzbwPa+tVfU zdOCtRsZjnAppkHDdrr0rDkExfhQMtgSks1P5xKLj+T7CUSWcw8oKtlrvMMiRsGxJiRv P1/A== 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=kFIyPwvmY6Z8CaxQVGctlcM25ld4uiqRnEntk+fHjBU=; b=BQkQ/yAR+mbsDiqK4Lw2VfIg36cmpOrU3Dx9e6b9dycNTpgQQYQfYWsDgmdiA+1lBf bxI08FxEUo3mdXZA6tET4yeXsPUynwuDw5rku0BATThDUYy1Wv3Pt7+y+oXo4JstRkPY B8VEFAiSGn864x25aqYvxPAQqkCwv2oj+IA/4aF83bxUo3+yd3R6C0bPUUUmAFkx7egu jGGOnEP9G3/ihmr8FlcusR1PA2j9PTGWHz6EVJvRR7Ag2zqG7wlWTFSc7qWAGuSrIsQB FUtCxdU7Qgw/KiVYJol3ZPbvi/zhoNWpcGuEW8vqponJuW0kEfjADv09Ovsc5vgudjUt 5HVQ== X-Gm-Message-State: AJcUukdaUgm6lXjkJwG7pQtLXZzpNfITxSbZqfhTi42xQX7asUFeIT9L DPLgHMtqWiIavvOC8rPypuM= X-Google-Smtp-Source: ALg8bN7RpJ2qUIDizwGAFAt6rS+BkLDspQxNWYgWJhI88ZD8tLyO7UMp7XSpAe+4eDlXbI1g3uzagA== X-Received: by 2002:a62:2292:: with SMTP id p18mr38483826pfj.9.1548990418286; Thu, 31 Jan 2019 19:06:58 -0800 (PST) Received: from vultr.guest ([104.238.181.70]) by smtp.gmail.com with ESMTPSA id i72sm8383692pfe.181.2019.01.31.19.06.57 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 31 Jan 2019 19:06:57 -0800 (PST) From: Changbin Du To: peterz@infradead.org, mingo@redhat.com, acme@kernel.org Cc: jolsa@redhat.com, namhyung@kernel.org, linux-kernel@vger.kernel.org, Changbin Du Subject: [PATCH] perf record: Add doc for bpf event selection Date: Fri, 1 Feb 2019 03:06:41 +0000 Message-Id: <20190201030641.4046-1-changbin.du@gmail.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add document for how to pass bpf program with perf. Signed-off-by: Changbin Du --- tools/perf/Documentation/perf-record.txt | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index d232b13ea713..0925d987cad0 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -88,6 +88,19 @@ OPTIONS If you want to profile write accesses in [0x1000~1008), just set 'mem:0x1000/8:w'. + - a bpf source file or object file to select events by a bpf program. + The bpf program can attach to variant perf events based on section + names. + + When passing '.c', perf searches installed LLVM to compile it into + object file first. Optional clang options can be pased by option + '--clang-opt'. + + perf record --clang-opt "-DLINUX_VERSION_CODE=0x50000" \ + -e ./tests/bpf-script-example.c + + Note: '--clang-opt' must place before '--event'. + - a group of events surrounded by a pair of brace ("{event1,event2,...}"). Each event is separated by commas and the group should be quoted to prevent the shell interpretation. You also need to use --group on -- 2.17.1