From patchwork Wed Oct 10 16:55:30 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lionel Landwerlin X-Patchwork-Id: 10634845 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2D4DA14BD for ; Wed, 10 Oct 2018 16:55:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 22E092A005 for ; Wed, 10 Oct 2018 16:55:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 173EB2A08B; Wed, 10 Oct 2018 16:55:42 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id B5F092A005 for ; Wed, 10 Oct 2018 16:55:41 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id CA666892D3; Wed, 10 Oct 2018 16:55:39 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id 23C6B8929B for ; Wed, 10 Oct 2018 16:55:38 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga104.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 10 Oct 2018 09:55:37 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,365,1534834800"; d="scan'208";a="270206345" Received: from delly.ld.intel.com ([10.103.239.197]) by fmsmga005.fm.intel.com with ESMTP; 10 Oct 2018 09:55:36 -0700 From: Lionel Landwerlin To: intel-gfx@lists.freedesktop.org Date: Wed, 10 Oct 2018 17:55:30 +0100 Message-Id: <20181010165533.23345-2-lionel.g.landwerlin@intel.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181010165533.23345-1-lionel.g.landwerlin@intel.com> References: <20181010165533.23345-1-lionel.g.landwerlin@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 1/4] drm/i915/perf: remove redundant oa buffer initialization X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP We initialize the OA buffer everytime we enable the OA unit (first call in gen[78]_oa_enable), so we don't need to initialize when preparing the metric set. Signed-off-by: Lionel Landwerlin Reviewed-by: Matthew Auld --- drivers/gpu/drm/i915/i915_drv.h | 17 ----------------- drivers/gpu/drm/i915/i915_perf.c | 6 +----- 2 files changed, 1 insertion(+), 22 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 63ce0da4e723..eef7c811bd8f 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1529,23 +1529,6 @@ struct i915_oa_ops { */ bool (*is_valid_flex_reg)(struct drm_i915_private *dev_priv, u32 addr); - /** - * @init_oa_buffer: Resets the head and tail pointers of the - * circular buffer for periodic OA reports. - * - * Called when first opening a stream for OA metrics, but also may be - * called in response to an OA buffer overflow or other error - * condition. - * - * Note it may be necessary to clear the full OA buffer here as part of - * maintaining the invariable that new reports must be written to - * zeroed memory for us to be able to reliable detect if an expected - * report has not yet landed in memory. (At least on Haswell the OA - * buffer tail pointer is not synchronized with reports being visible - * to the CPU) - */ - void (*init_oa_buffer)(struct drm_i915_private *dev_priv); - /** * @enable_metric_set: Selects and applies any MUX configuration to set * up the Boolean and Custom (B/C) counters that are part of the diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c index 30911efd2cf7..14f7d03aabcf 100644 --- a/drivers/gpu/drm/i915/i915_perf.c +++ b/drivers/gpu/drm/i915/i915_perf.c @@ -1530,8 +1530,6 @@ static int alloc_oa_buffer(struct drm_i915_private *dev_priv) goto err_unpin; } - dev_priv->perf.oa.ops.init_oa_buffer(dev_priv); - DRM_DEBUG_DRIVER("OA Buffer initialized, gtt offset = 0x%x, vaddr = %p\n", i915_ggtt_offset(dev_priv->perf.oa.oa_buffer.vma), dev_priv->perf.oa.oa_buffer.vaddr); @@ -2000,7 +1998,7 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream, return -EINVAL; } - if (!dev_priv->perf.oa.ops.init_oa_buffer) { + if (!dev_priv->perf.oa.ops.enable_metric_set) { DRM_DEBUG("OA unit not supported\n"); return -ENODEV; } @@ -3389,7 +3387,6 @@ void i915_perf_init(struct drm_i915_private *dev_priv) dev_priv->perf.oa.ops.is_valid_mux_reg = hsw_is_valid_mux_addr; dev_priv->perf.oa.ops.is_valid_flex_reg = NULL; - dev_priv->perf.oa.ops.init_oa_buffer = gen7_init_oa_buffer; dev_priv->perf.oa.ops.enable_metric_set = hsw_enable_metric_set; dev_priv->perf.oa.ops.disable_metric_set = hsw_disable_metric_set; dev_priv->perf.oa.ops.oa_enable = gen7_oa_enable; @@ -3408,7 +3405,6 @@ void i915_perf_init(struct drm_i915_private *dev_priv) */ dev_priv->perf.oa.oa_formats = gen8_plus_oa_formats; - dev_priv->perf.oa.ops.init_oa_buffer = gen8_init_oa_buffer; dev_priv->perf.oa.ops.oa_enable = gen8_oa_enable; dev_priv->perf.oa.ops.oa_disable = gen8_oa_disable; dev_priv->perf.oa.ops.read = gen8_oa_read;