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=-18.2 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 C3EF5C433EF for ; Tue, 21 Sep 2021 13:43:56 +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 8EC7961131 for ; Tue, 21 Sep 2021 13:43:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 8EC7961131 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=4z3f5Rw2PTRa8z12pIVPIaaJ5ls4TIhN4fkRne8I6ZY=; b=OZj8bzjqr9ziQy WrKfgGav/55+sH2l27GLYadYSxGb7hO5PFGca9c/j4JXVbMZhrIV5gWYt+xTM8jGma+K6AW2ueo6t T3cEqQD9lwI4nVl1y6JXuWfPwSkvFkEFCVLUF25c2XV3BvPq3ZK9ZW1FixObFnvDaH5itkE1ZMnhA 2dlouM3KsAlxwBqnGxSfmbY37CZq4VSlZFVoCeXUUSQ4VxX0wMIRdC455TPSXNlskk8Adda5p5N1a NVBie9c0OW6LOU9tQ6U819mQ9z4DZlxzcY8/7uKLiuvSLiG4dEkJieIsxkkcf87n95V1nJ7rY17fV aWeAM4IAQobt+c1+Iw8g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mSg2W-004af1-UY; Tue, 21 Sep 2021 13:42:29 +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 1mSg1k-004aNP-Ec for linux-arm-kernel@lists.infradead.org; Tue, 21 Sep 2021 13:41:41 +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 0819C106F; Tue, 21 Sep 2021 06:41:38 -0700 (PDT) Received: from ewhatever.cambridge.arm.com (ewhatever.cambridge.arm.com [10.1.197.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 4170B3F793; Tue, 21 Sep 2021 06:41:36 -0700 (PDT) From: Suzuki K Poulose To: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, maz@kernel.org, catalin.marinas@arm.com, mark.rutland@arm.com, james.morse@arm.com, anshuman.khandual@arm.com, leo.yan@linaro.org, mike.leach@linaro.org, mathieu.poirier@linaro.org, will@kernel.org, lcherian@marvell.com, coresight@lists.linaro.org, Suzuki K Poulose Subject: [PATCH v2 04/17] coresight: trbe: Add a helper to pad a given buffer area Date: Tue, 21 Sep 2021 14:41:08 +0100 Message-Id: <20210921134121.2423546-5-suzuki.poulose@arm.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20210921134121.2423546-1-suzuki.poulose@arm.com> References: <20210921134121.2423546-1-suzuki.poulose@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210921_064140_580586_A4A02C2D X-CRM114-Status: GOOD ( 10.33 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Refactor the helper to pad a given AUX buffer area to allow "filling" ignore packets, without moving any handle pointers. This will be useful in working around errata, where we may have to fill the buffer after a session. Cc: Mathieu Poirier Cc: Mike Leach Cc: Leo Yan Reviewed-by: Anshuman Khandual Signed-off-by: Suzuki K Poulose --- drivers/hwtracing/coresight/coresight-trbe.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/hwtracing/coresight/coresight-trbe.c b/drivers/hwtracing/coresight/coresight-trbe.c index 063c4505a203..a32ef083aa36 100644 --- a/drivers/hwtracing/coresight/coresight-trbe.c +++ b/drivers/hwtracing/coresight/coresight-trbe.c @@ -227,12 +227,18 @@ static void trbe_stop_and_truncate_event(struct perf_output_handle *handle) * consumed from the user space. The enabled TRBE buffer area is a moving subset of * the allocated perf auxiliary buffer. */ + +static void __trbe_pad_buf(struct trbe_buf *buf, u64 offset, int len) +{ + memset((void *)buf->trbe_base + offset, ETE_IGNORE_PACKET, len); +} + static void trbe_pad_buf(struct perf_output_handle *handle, int len) { struct trbe_buf *buf = etm_perf_sink_config(handle); u64 head = PERF_IDX2OFF(handle->head, buf); - memset((void *)buf->trbe_base + head, ETE_IGNORE_PACKET, len); + __trbe_pad_buf(buf, head, len); if (!buf->snapshot) perf_aux_output_skip(handle, len); } -- 2.24.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel