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=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 322B2C4360F for ; Thu, 4 Apr 2019 03:36:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 020DC2133D for ; Thu, 4 Apr 2019 03:36:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="slFc+tqc" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728658AbfDDDgk (ORCPT ); Wed, 3 Apr 2019 23:36:40 -0400 Received: from mail-pf1-f193.google.com ([209.85.210.193]:38159 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728553AbfDDDgh (ORCPT ); Wed, 3 Apr 2019 23:36:37 -0400 Received: by mail-pf1-f193.google.com with SMTP id 10so625638pfo.5 for ; Wed, 03 Apr 2019 20:36:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=3HdOcyQCq9wrU1AdvtM6R2lHiYyKElGkieSf9jn2Q7c=; b=slFc+tqcLXHYhCkIxgtfmG/A+C0SXJdQV/GnM6Oqifk9ED1Eb60jGCl5ehaz7kum9f /zzsI+zMaS64QEk6OeKJbO9qcb/orb7/xJSHlQTFmSoO32iuFd/gtifKgQiWwjEWAw+6 pa6GUmvQyLt3tUY8/QjNRxSLmNSas0E/Vo+nPOcrBRcyZs+DpdNZqr8OqkDEwiGMwzfI Nt1zrt4RMmEeVYi0JspPGlerBrJ5vgpDHQm5WSpokzXHsTwI0k4oGUWbnJmADATo1Rer zBYu9x1qeJzwAjdBEnorMU8S20jXoX2i/GxSjd69q//Voh0psQhboexDaqx5hpCqCiP2 Hfow== 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:in-reply-to :references; bh=3HdOcyQCq9wrU1AdvtM6R2lHiYyKElGkieSf9jn2Q7c=; b=nuiKpkIvz6mT6WTvzZcCY+4e1Hmf4SzhBUf9BvIZ4vqc9BnTiZd6cVk2MpG40HZkX/ Fn3XfjIeyQetEpjWcrocgmG7awlzqp72sybUCFQ31/Jxk0XjXz14Tp0DgKLjthER5ZZm yNntY/+09lMvMJN/j1bVn1HnEuiLgQyK6uEw11XVCdZyOWbyax1V8zJQV2HckOnF2btC WznIVoKxICMMTpROYJ7ZjgLpN2GNq11BlQIxyxqTBR58+2KGtT7aKUzz2cnt4PzQw24l A82roVTrcYMMdfm0SMXdR+sCy5CkPk4lIeOBVgJotBiB0lR/svGLuB25AB276AwnGoiq g++w== X-Gm-Message-State: APjAAAWEGiLSlNNvZDHxeCSAfqYsf+Wo6SHBjApZxVC2MqPJ5i2hvqYH PH/YXXEuQKh8qRZulff0ORRvlw== X-Google-Smtp-Source: APXvYqx2Oo18Jx3VkscEBB1oKY6eJLnvphpNd1a9HsVS6sx8AtGlR9ieNrAJIWpUZ8BERwuqvHA5lg== X-Received: by 2002:a63:b64:: with SMTP id a36mr3487712pgl.58.1554348996718; Wed, 03 Apr 2019 20:36:36 -0700 (PDT) Received: from xps15.imgcgcw.net ([147.50.13.10]) by smtp.gmail.com with ESMTPSA id u5sm12212780pfm.121.2019.04.03.20.36.33 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 03 Apr 2019 20:36:36 -0700 (PDT) From: Mathieu Poirier To: linux-arm-kernel@lists.infradead.org Cc: alexander.shishkin@linux.intel.com, peterz@infradead.org, suzuki.poulose@arm.com, mike.leach@arm.com, leo.yan@linaro.org, coresight@lists.linaro.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 13/20] coresight: tmc-etr: Create per-thread buffer allocation function Date: Wed, 3 Apr 2019 21:35:34 -0600 Message-Id: <20190404033541.14072-14-mathieu.poirier@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190404033541.14072-1-mathieu.poirier@linaro.org> References: <20190404033541.14072-1-mathieu.poirier@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Buffer allocation is different when dealing with per-thread and CPU-wide sessions. In preparation to support CPU-wide trace scenarios simplify things by keeping allocation functions for both type separate. Signed-off-by: Mathieu Poirier --- .../hwtracing/coresight/coresight-tmc-etr.c | 29 ++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c index e9c77009188a..ac1efdfc0d07 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etr.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c @@ -1206,6 +1206,33 @@ alloc_etr_buf(struct tmc_drvdata *drvdata, struct perf_event *event, return etr_buf; } +static struct etr_buf * +get_perf_etr_buf_per_thread(struct tmc_drvdata *drvdata, + struct perf_event *event, int nr_pages, + void **pages, bool snapshot) +{ + struct etr_buf *etr_buf; + + /* + * In per-thread mode the etr_buf isn't shared, so just go ahead + * with memory allocation. + */ + etr_buf = alloc_etr_buf(drvdata, event, nr_pages, pages, snapshot); + + return etr_buf; +} + +static struct etr_buf * +get_perf_etr_buf(struct tmc_drvdata *drvdata, struct perf_event *event, + int nr_pages, void **pages, bool snapshot) +{ + if (event->cpu == -1) + return get_perf_etr_buf_per_thread(drvdata, event, nr_pages, + pages, snapshot); + + return ERR_PTR(-ENOENT); +} + static struct etr_perf_buffer * tmc_etr_setup_perf_buf(struct tmc_drvdata *drvdata, struct perf_event *event, int nr_pages, void **pages, bool snapshot) @@ -1222,7 +1249,7 @@ tmc_etr_setup_perf_buf(struct tmc_drvdata *drvdata, struct perf_event *event, if (!etr_perf) return ERR_PTR(-ENOMEM); - etr_buf = alloc_etr_buf(drvdata, event, nr_pages, pages, snapshot); + etr_buf = get_perf_etr_buf(drvdata, event, nr_pages, pages, snapshot); if (!IS_ERR(etr_buf)) goto done; -- 2.17.1