From patchwork Thu Aug 5 13:03:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Clark X-Patchwork-Id: 12421139 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=-17.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 6CF61C4338F for ; Thu, 5 Aug 2021 13:05:51 +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 231B760EE4 for ; Thu, 5 Aug 2021 13:05:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 231B760EE4 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=iV2v0HZZ7pBo0ejCS9K7PmhJD3nbuOPU3ogwZU0L9zY=; b=NNg8sRgma/yvPZ wfmImbuFnopYYqSk+zureOgKxseX2QisMQ2fP+5a72Gyy6Zm24A6lf5ShD3s06LZQ59fAGQdlkNQx 8QNMAXHLuHFbc3hvYaFjqS9TLy9+zRFlTuC+ZuHaz6nBNglLVjLF/F+IVF5ji37W5bRGIjbJrDct5 VRwNQeplQpjr8OD07/AZ5bOkrtrJ5hy6XgAqwPQuZVnLJBK7H+kiRzL49WI3S+5ks41kVND9OQMUy qytJVv0/iC6/KPbQoScvbuP5np7TstgFYN73+a49PpN5d4LkkYadNGdJHVpsMKUw8cSTiUlt9Ro6A vhKKNSFcaV03ccsZebzw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mBd2u-009bey-Qv; Thu, 05 Aug 2021 13:04:24 +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 1mBd2i-009bby-RP for linux-arm-kernel@lists.infradead.org; Thu, 05 Aug 2021 13:04:14 +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 0C04A11FB; Thu, 5 Aug 2021 06:04:12 -0700 (PDT) Received: from e121896.arm.com (unknown [10.57.40.41]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 9E7EF3F719; Thu, 5 Aug 2021 06:04:09 -0700 (PDT) From: James Clark To: acme@kernel.org, mathieu.poirier@linaro.org, leo.yan@linaro.org, coresight@lists.linaro.org, linux-perf-users@vger.kernel.org Cc: suzuki.poulose@arm.com, mike.leach@linaro.org, James Clark , John Garry , Will Deacon , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 1/1] perf cs-etm: Add warnings for missing DSOs Date: Thu, 5 Aug 2021 14:03:54 +0100 Message-Id: <20210805130354.878120-2-james.clark@arm.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20210805130354.878120-1-james.clark@arm.com> References: <20210805130354.878120-1-james.clark@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210805_060412_980690_94377DD4 X-CRM114-Status: GOOD ( 13.09 ) 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 Currently decode will silently fail if no binary data is available for the decode. This is made worse if only partial data is available because the decode will appear to work, but any trace from that missing DSO will silently not be generated. Add a UI popup once if there is any data missing, and then warn in the bottom left for each individual DSO that's missing. Reviewed-by: Leo Yan Signed-off-by: James Clark --- tools/perf/util/cs-etm.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c index f4b2bff533f3..b59d234e437d 100644 --- a/tools/perf/util/cs-etm.c +++ b/tools/perf/util/cs-etm.c @@ -716,8 +716,17 @@ static u32 cs_etm__mem_access(struct cs_etm_queue *etmq, u8 trace_chan_id, len = dso__data_read_offset(al.map->dso, machine, offset, buffer, size); - if (len <= 0) + if (len <= 0) { + ui__warning_once("CS ETM Trace: Missing DSO. Use 'perf archive' or debuginfod to export data from the traced system.\n" + " Enable CONFIG_PROC_KCORE or use option '-k /path/to/vmlinux' for kernel symbols.\n"); + if (!al.map->dso->auxtrace_warned) { + pr_err("CS ETM Trace: Debug data not found for address %#"PRIx64" in %s\n", + address, + al.map->dso->long_name ? al.map->dso->long_name : "Unknown"); + al.map->dso->auxtrace_warned = true; + } return 0; + } return len; }