From patchwork Fri Jul 5 08:57:47 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?VmlsbGUgU3lyasOkbMOk?= X-Patchwork-Id: 2824077 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 849EFBF4A1 for ; Fri, 5 Jul 2013 09:15:34 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A26F52015B for ; Fri, 5 Jul 2013 09:15:33 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 950A320158 for ; Fri, 5 Jul 2013 09:15:32 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8AEA2E6746 for ; Fri, 5 Jul 2013 02:15:32 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTP id 25AA5E6749 for ; Fri, 5 Jul 2013 01:59:47 -0700 (PDT) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga102.fm.intel.com with ESMTP; 05 Jul 2013 02:01:13 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos; i="4.87,1000,1363158000"; d="scan'208"; a="360862331" Received: from stinkbox.fi.intel.com (HELO stinkbox) ([10.237.72.168]) by fmsmga001.fm.intel.com with SMTP; 05 Jul 2013 02:00:41 -0700 Received: by stinkbox (sSMTP sendmail emulation); Fri, 05 Jul 2013 11:59:43 +0300 From: ville.syrjala@linux.intel.com To: intel-gfx@lists.freedesktop.org Date: Fri, 5 Jul 2013 11:57:47 +0300 Message-Id: <1373014667-19484-36-git-send-email-ville.syrjala@linux.intel.com> X-Mailer: git-send-email 1.8.1.5 In-Reply-To: <1373014667-19484-1-git-send-email-ville.syrjala@linux.intel.com> References: <1373014667-19484-1-git-send-email-ville.syrjala@linux.intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 35/35] hack: Print watermark programming duration X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Ville Syrjälä Print how long watermark programming took. Seems to be ~5 usec on ILK and IVB at the moment. --- drivers/gpu/drm/i915/intel_pm.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 782c644..1e49c94 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -2601,15 +2601,26 @@ void ilk_update_pipe_wm(struct drm_device *dev, enum pipe pipe) spin_lock_irqsave(&dev_priv->wm.lock, flags); if (intel_crtc->wm.dirty) { + ktime_t stime, etime; + s64 duration_ns; + DRM_DEBUG_KMS("pipe %c vblank, programming new watermarks\n", pipe_name(pipe)); + stime = ktime_get(); + drm_vblank_put(dev, pipe); intel_crtc->wm.active = intel_crtc->wm.pending; intel_crtc->wm.dirty = false; ilk_program_watermarks(dev); + + etime = ktime_get(); + + duration_ns = ktime_to_ns(etime) - ktime_to_ns(stime); + DRM_ERROR("pipe %c watermark programming took %lld ns\n", + pipe_name(pipe), duration_ns); } spin_unlock_irqrestore(&dev_priv->wm.lock, flags);