From patchwork Tue Feb 9 12:44:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Andrzej Siewior X-Patchwork-Id: 12078003 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=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 7023EC433DB for ; Tue, 9 Feb 2021 12:44:47 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 123BC64E74 for ; Tue, 9 Feb 2021 12:44:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 123BC64E74 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linutronix.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3C4BF6EB14; Tue, 9 Feb 2021 12:44:46 +0000 (UTC) Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by gabe.freedesktop.org (Postfix) with ESMTPS id B362A6EB11; Tue, 9 Feb 2021 12:44:45 +0000 (UTC) From: Sebastian Andrzej Siewior DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1612874684; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=KEa1InnPF5EuT5Iy/fi3GjgUJ0wnNen8cYmBEvVp/GM=; b=DljWuqE0TWElG7FkbO1ovGUu+gNuT6NUi5nJvyQ2u2TUJhdoLvcvhVl1fKG9kjjeGXWNAg gbXop3plyyGft2Q59ihFq2yq49lXJyaHUrtjfKpR2c2XsOP+N6ATssHlyZu5ssfKbWAbvM zZKyw8wLNzIsjKZDGXm2YdJxJvlCGhMqYdCyJOlT3OhRG3w6WvCBDignDnzfW4NwRPc2Bc ZNvoBLz/+RQsolxKk6ZAS8CFd0cGSMmnUSw5/uRu3kZlNcvpiujsyGcLSW2O+vt9ErYp6j Gm1aLShfYsTtYXBRJ0Gj04KSwzGuTmWFPSdHvuHwkx27ojo9tbG2Bcfo/l6GSw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1612874684; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=KEa1InnPF5EuT5Iy/fi3GjgUJ0wnNen8cYmBEvVp/GM=; b=hqeLNqeier5r5IG2+445JUK6Dws43OIa+df3UUiokXklC+fcpPSkMV1it6J/b07LYXzRgr mvwHcFurJq4JahDQ== To: amd-gfx@lists.freedesktop.org Subject: [PATCH 1/3] drm/amdgpu: Replace in_interrupt() usage in gmc_v*_process_interrupt() Date: Tue, 9 Feb 2021 13:44:37 +0100 Message-Id: <20210209124439.408140-2-bigeasy@linutronix.de> In-Reply-To: <20210209124439.408140-1-bigeasy@linutronix.de> References: <20210209124439.408140-1-bigeasy@linutronix.de> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Airlie , Sebastian Andrzej Siewior , dri-devel@lists.freedesktop.org, Alex Deucher , Thomas Gleixner , =?utf-8?q?Christian_K=C3=B6nig?= Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The usage of in_interrupt() in gmc_v*_process_interrupt() is intended to use a different code path if invoked from the interrupt handler vs invoked from the workqueue. The usage of in_interrupt() in drivers is phased out and Linus clearly requested that code which changes behaviour depending on context should either be separated or the context be conveyed in an argument passed by the caller, which usually knows the context. gmc_v*_process_interrupt() is invoked via the ->process() callback from amdgpu_ih_process() which in turn is invoked either from amdgpu_irq_handler() (the interrupt handler) or from amdgpu_irq_handle_*() which is a workqueue. amdgpu_irq::ih is always processed from the interrupt handler, the other three struct amdgpu_ih_ring members are processed from a workqueue. Replace the in_interrupt() check with a comparison against adev->irq.ih. A similar check is already done to check if the ih pointer is from ih_soft. Signed-off-by: Sebastian Andrzej Siewior --- drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c | 2 +- drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c index 3b7c6c31fce1f..7b6791d699e27 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c @@ -113,7 +113,7 @@ static int gmc_v10_0_process_interrupt(struct amdgpu_device *adev, /* Delegate it to a different ring if the hardware hasn't * already done it. */ - if (in_interrupt()) { + if (entry->ih == &adev->irq.ih) { amdgpu_irq_delegate(adev, entry, 8); return 1; } diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c index aedef9017c4c2..266296be7302d 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c @@ -486,7 +486,7 @@ static int gmc_v9_0_process_interrupt(struct amdgpu_device *adev, /* Delegate it to a different ring if the hardware hasn't * already done it. */ - if (in_interrupt()) { + if (entry->ih == &adev->irq.ih) { amdgpu_irq_delegate(adev, entry, 8); return 1; }