From patchwork Tue Nov 9 11:50:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: German Gomez X-Patchwork-Id: 12610457 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 13211C433F5 for ; Tue, 9 Nov 2021 11:52:28 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D07C56105A for ; Tue, 9 Nov 2021 11:52:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org D07C56105A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Y162MnPx/u6ob5eB9uRaq4XevsXu9FRqJWUkAgSlpeE=; b=dpYmhw2uWxIqRQ dnyR2zZa4DALOkdVV3ONvq0s4ROGzGu3fypI76YZ2qd6Q2Zz4PraBd9qHEgEi+Ul680YUzu2FEX9V HTvD+Ykmk8Mr8fBP/BB9p8INs6SpvITE1LQItwMnIf98THBbwHuyfaDuL/RLz00fJhL+2CYQyzzKx GG1HvORhoMMT6nuQsHEGCgJ1OF5i+QtVT+r8ls0UShL8OMIJEjSh4x1qbpxSGnIvqHtMyiJ78vhT2 NxvPncOvU7lIpL1OOMi51T2+PX9/7j+iM8eAKf9VW6fmGHYgGqoyF5gGAFkOWMJCtE4vQ3g1Sf2Q9 TAfbAKkSiOaWPyAJ/ZRQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mkPel-001pVI-Dh; Tue, 09 Nov 2021 11:51:15 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mkPeE-001pGk-PY for linux-arm-kernel@lists.infradead.org; Tue, 09 Nov 2021 11:50:44 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 94D92ED1; Tue, 9 Nov 2021 03:50:41 -0800 (PST) Received: from ip-10-252-15-108.eu-west-1.compute.internal (unknown [10.252.15.108]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 71FA93F7F5; Tue, 9 Nov 2021 03:50:39 -0800 (PST) From: German Gomez To: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, acme@kernel.org Cc: German Gomez , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , John Garry , Will Deacon , Mathieu Poirier , Leo Yan , linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 2/4] perf arm-spe: Update --switch-events docs in perf-record Date: Tue, 9 Nov 2021 11:50:18 +0000 Message-Id: <20211109115020.31623-3-german.gomez@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211109115020.31623-1-german.gomez@arm.com> References: <20211109115020.31623-1-german.gomez@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211109_035042_912333_6AF2AE6D X-CRM114-Status: GOOD ( 12.29 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Update perf-record docs and Arm SPE recording options so that they are consistent. This includes supporting the --no-switch-events flag in Arm SPE as well. Signed-off-by: German Gomez Reviewed-by: Leo Yan Acked-by: Namhyung Kim --- tools/perf/Documentation/perf-record.txt | 2 +- tools/perf/arch/arm64/util/arm-spe.c | 4 +++- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index 2d7df8703..3cf7bac67 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -469,7 +469,7 @@ This option sets the time out limit. The default value is 500 ms. --switch-events:: Record context switch events i.e. events of type PERF_RECORD_SWITCH or -PERF_RECORD_SWITCH_CPU_WIDE. In some cases (e.g. Intel PT or CoreSight) +PERF_RECORD_SWITCH_CPU_WIDE. In some cases (e.g. Intel PT, CoreSight or Arm SPE) switch events will be enabled automatically, which can be suppressed by by the option --no-switch-events. diff --git a/tools/perf/arch/arm64/util/arm-spe.c b/tools/perf/arch/arm64/util/arm-spe.c index 58ba8d15c..725a06cd2 100644 --- a/tools/perf/arch/arm64/util/arm-spe.c +++ b/tools/perf/arch/arm64/util/arm-spe.c @@ -169,8 +169,10 @@ static int arm_spe_recording_options(struct auxtrace_record *itr, if (!perf_cpu_map__empty(cpus)) { evsel__set_sample_bit(tracking_evsel, TIME); evsel__set_sample_bit(tracking_evsel, CPU); + /* also track task context switch */ - tracking_evsel->core.attr.context_switch = 1; + if (!record_opts__no_switch_events(opts)) + tracking_evsel->core.attr.context_switch = 1; } return 0;