From patchwork Wed Jul 13 09:30:01 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Mauro Carvalho Chehab X-Patchwork-Id: 12916355 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 34EE8C433EF for ; Wed, 13 Jul 2022 09:31:35 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id CA40B98AA4; Wed, 13 Jul 2022 09:30:45 +0000 (UTC) Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by gabe.freedesktop.org (Postfix) with ESMTPS id D806898A7D; Wed, 13 Jul 2022 09:30:24 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 42043B81D51; Wed, 13 Jul 2022 09:30:23 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DFFDCC3411E; Wed, 13 Jul 2022 09:30:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1657704621; bh=8B8ALfcdC8EwjTlOgjtqiOwcizUYe+bdB6pww0lUJSw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qiuOt/04hD+49hrrU8PsBpLBHnWDBB8euq2/LV+O1tPFgamgy3XhpewKG7QjLzh7q 5g4fJT6rG+llX1qDOZ2xGnZXVA6wFmlYFs1/ISmx4Ha+5W8vc4AZHSwy2C/nYmoDTw kl3mmXGzu4RIlx4yfcwjt2uWKnBHUP+kC3AWhEqQmMs4YTP96We4/VId6Wmysf8T3D /z5PCKLLaeXA8wPLyLVBOcAvEkU/WvrPAnp+qMKvbJgYQsYOQKy7dE/5z/IFPVRexW Q1DNXK9nALdUZuRuxHDN3cTpNVdm31Kg+OAfrypieflPE8kmeiuOfhtk1O1ezN3WBg UO3H7jIBONAeA== Received: from mchehab by mail.kernel.org with local (Exim 4.95) (envelope-from ) id 1oBYhH-0050LL-JV; Wed, 13 Jul 2022 10:30:19 +0100 From: Mauro Carvalho Chehab To: Date: Wed, 13 Jul 2022 10:30:01 +0100 Message-Id: X-Mailer: git-send-email 2.36.1 In-Reply-To: References: MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 04/21] drm/i915/gt: Only invalidate TLBs exposed to user manipulation X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?utf-8?q?Thomas_Hellstr=C3=B6m?= , David Airlie , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Chris Wilson , Rodrigo Vivi , Dave Airlie , stable@vger.kernel.org, Mauro Carvalho Chehab , intel-gfx@lists.freedesktop.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Chris Wilson Don't flush TLBs when the buffer is only used in the GGTT under full control of the kernel, as there's no risk of concurrent access and stale access from prefetch. We only need to invalidate the TLB if they are accessible by the user. That helps to reduce the performance regression introduced by TLB invalidate logic. Cc: stable@vger.kernel.org Fixes: 7938d61591d3 ("drm/i915: Flush TLBs before releasing backing store") Signed-off-by: Chris Wilson Cc: Fei Yang Cc: Andi Shyti Acked-by: Thomas Hellström Signed-off-by: Mauro Carvalho Chehab --- See [PATCH 00/21] at: https://lore.kernel.org/all/cover.1657703926.git.mchehab@kernel.org/ drivers/gpu/drm/i915/i915_vma.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c index ef3b04c7e153..646f419b2035 100644 --- a/drivers/gpu/drm/i915/i915_vma.c +++ b/drivers/gpu/drm/i915/i915_vma.c @@ -538,7 +538,8 @@ int i915_vma_bind(struct i915_vma *vma, bind_flags); } - set_bit(I915_BO_WAS_BOUND_BIT, &vma->obj->flags); + if (bind_flags & I915_VMA_LOCAL_BIND) + set_bit(I915_BO_WAS_BOUND_BIT, &vma->obj->flags); atomic_or(bind_flags, &vma->flags); return 0;