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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 203CBE784B3 for ; Mon, 2 Oct 2023 14:28:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237768AbjJBO25 (ORCPT ); Mon, 2 Oct 2023 10:28:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42166 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237663AbjJBO2z (ORCPT ); Mon, 2 Oct 2023 10:28:55 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 1816DAD; Mon, 2 Oct 2023 07:28:52 -0700 (PDT) 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 3E86BC15; Mon, 2 Oct 2023 07:29:30 -0700 (PDT) Received: from [10.57.1.112] (unknown [10.57.1.112]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id E9F5E3F762; Mon, 2 Oct 2023 07:28:49 -0700 (PDT) Message-ID: <7e5e1007-1f6c-f212-8f3d-a5f640614055@arm.com> Date: Mon, 2 Oct 2023 15:28:48 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.15.1 Subject: Re: [PATCH 2/7] coresight: tmc-etr: Add support to use reserved trace memory To: Linu Cherian Cc: linux-arm-kernel@lists.infradead.org, coresight@lists.linaro.org, linux-kernel@vger.kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, devicetree@vger.kernel.org, sgoutham@marvell.com, gcherian@marvell.com, Anil Kumar Reddy , suzuki.poulose@arm.com, mike.leach@linaro.org, leo.yan@linaro.org References: <20230929133754.857678-1-lcherian@marvell.com> <20230929133754.857678-3-lcherian@marvell.com> Content-Language: en-US From: James Clark In-Reply-To: <20230929133754.857678-3-lcherian@marvell.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 29/09/2023 14:37, Linu Cherian wrote: > Add support to use reserved memory for coresight ETR trace buffer. > > Introduce a new ETR buffer mode called ETR_MODE_RESRV, which > becomes available when ETR device tree node is supplied with a valid > reserved memory region. > > ETR_MODE_RESRV can be selected only by explicit user request. > > $ echo resrv >/sys/bus/coresight/devices/tmc_etr/buf_mode_preferred > > Signed-off-by: Anil Kumar Reddy > Signed-off-by: Linu Cherian > --- > .../hwtracing/coresight/coresight-tmc-core.c | 51 +++++++++++ > .../hwtracing/coresight/coresight-tmc-etr.c | 87 ++++++++++++++++++- > drivers/hwtracing/coresight/coresight-tmc.h | 24 +++++ > 3 files changed, 161 insertions(+), 1 deletion(-) > > diff --git a/drivers/hwtracing/coresight/coresight-tmc-core.c b/drivers/hwtracing/coresight/coresight-tmc-core.c > index 7ec5365e2b64..1e94215ac148 100644 > --- a/drivers/hwtracing/coresight/coresight-tmc-core.c > +++ b/drivers/hwtracing/coresight/coresight-tmc-core.c [...] > diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c > index 834674feb6b4..fca82eaf073f 100644 Hi Linu, I think this version of coresight-tmc-etr.c isn't in the tree and it makes it hard to apply the set. Do you have local changes? Or if it requires other patches it might be best to host the full set on your own repo and link to it: $ git show 834674feb6b4 fatal: ambiguous argument '834674feb6b4': unknown revision or path not in the working tree. Use '--' to separate paths from revisions, like this: 'git [...] -- [...]' Thanks James