From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ej1-f73.google.com (mail-ej1-f73.google.com [209.85.218.73]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1BC093126C8 for ; Sun, 16 Nov 2025 18:29:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.73 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763317755; cv=none; b=Oy/CSAt7OXAqds5Re8DfhPRm3Es08nlxnFvtUdkMfjp8HcTAx/IjIBHNDkpnWeW8ovwatGTfp6ArxgdJDN1jgOePCJl9pAkJW/+lLhAoD3F6lmQyfPufyr8JXOt648VkdiEw7A4fh17mRCCBiHDx4t7JsawmpjJM0rFc3XqE0VM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763317755; c=relaxed/simple; bh=00mALChpOM7DFQuKJAqLgOxwnjchBiE+L7n4Z+W75eA=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=PE+JN2VnOsuhxUT3o0dG4/rbmOQZJno6IqnCztqXAfZ55w9lr+XKEIZpy+kX7Yrp5L8Ue/8ZVwS5AZn4OQ5cSkHfepKJjCubeehnAasIROfv+f1TNrY2cK1unJRH1bM7pDCCkQMiFYXh0WarqFYJ+dDdR5KMTc5/DzzEwjAcR4Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--lrizzo.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=mjiDoCoy; arc=none smtp.client-ip=209.85.218.73 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--lrizzo.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="mjiDoCoy" Received: by mail-ej1-f73.google.com with SMTP id a640c23a62f3a-b7336ad128cso454163366b.1 for ; Sun, 16 Nov 2025 10:29:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1763317752; x=1763922552; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=IUxkiGynZiAFv0MAfGMeT3PXXPBCq7AugJzue/oa1+A=; b=mjiDoCoylCiy3mHJEQ0TscQurnR+E1QJmgsmWRCg4d81+bWugt3UZe+PChCCAXGBUt DZWWJDT6T6sSCE3KnncXdXcv4ikw/MuIQgs1Qb7PFcKHSRkRDnsJN+VN+/g7peYSqMcU L1jLPteMPOL0GNkwPuBnMDhJXvwyjVYbtWt9a1qQgb6JO5KG8CtinbZH0PUFvb1WVvjv Hv7+y8g86wfQ9rr9lEMMsJXWOweEtc5RwiFrHHFjiMONC6RUmU4+7KPRq5IB8KDcx8Nq lP0VAbr/WLOwrpvMpiOS7LgcVB9CwnqsclDe3uApkvVjd5X1+yvqH55vvXqDsikgnvU1 y1dA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763317752; x=1763922552; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=IUxkiGynZiAFv0MAfGMeT3PXXPBCq7AugJzue/oa1+A=; b=ClrwFqzqR19Zfbh0+mMX5sCW5qT06eyYCzi08+hp2DWUXbO4MsJF54bV7PUYt60cDo 9YBMQvIIYrKh/ts2e9bPuFDKu9wdXYnc7uq5pPbfA7TKv0HKywwn/rEkZYGqGO1MaZaZ 0MD0zcLF8wrQD70C2kT/0Pldhy9IulY03/7eeMrXROykB3JgddCuSrl+S7Ug8muChvvG yz6RAtf+3dS1w+cPA0wzp1U5Q7wZlUo9bgAH37NYw880FG/3o4PGN2GlQoR9m0uNA8sK +dC4OBF0brXusG7oQ4FmjKVR5IMKREK7e3AgSulqjbHmrbhZ4DXWRzfidldEkYyNNP7Q XRHg== X-Gm-Message-State: AOJu0YxfO9gKazimy2WENEaj6hFKJB9wmHmX01zPrZbPlGJuhXI8ck8H qnHqMgryJdOqpPco7UzNn4Mgc0KVlc1VSTwRINkmUP5UYrI134KU8y5SPzHZFGJfff7ZvyRAN5j G5JUyHA== X-Google-Smtp-Source: AGHT+IHUtJtAYO5VoPHTP3KkG3xrvaO2UdEkY1YzXHK5nlOWuzoFlFfldRJ8XmBWUxdDPYUHNvaUcMhIGtA= X-Received: from ejcvc14.prod.google.com ([2002:a17:907:d08e:b0:b73:592e:4be0]) (user=lrizzo job=prod-delivery.src-stubby-dispatcher) by 2002:a17:907:97c3:b0:b72:a899:169f with SMTP id a640c23a62f3a-b7367828ab8mr1177209666b.4.1763317752491; Sun, 16 Nov 2025 10:29:12 -0800 (PST) Date: Sun, 16 Nov 2025 18:28:38 +0000 In-Reply-To: <20251116182839.939139-1-lrizzo@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20251116182839.939139-1-lrizzo@google.com> X-Mailer: git-send-email 2.52.0.rc1.455.g30608eb744-goog Message-ID: <20251116182839.939139-8-lrizzo@google.com> Subject: [PATCH v2 7/8] nvme-pci: add module parameter for default moderation mode From: Luigi Rizzo To: Thomas Gleixner , Marc Zyngier , Luigi Rizzo , Paolo Abeni , Andrew Morton , Sean Christopherson , Jacob Pan Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, Bjorn Helgaas , Willem de Bruijn , Luigi Rizzo Content-Type: text/plain; charset="UTF-8" The following module parameter enables moderation at boot time for nvme devices. nvme.soft_moderation=1 It can be overridden at runtime via /proc/irq/*/*nvme*/soft_moderation. See Documentation/core-api/irq/irq-moderation.rst for configuration. Change-Id: Ib061737415c26b868e889d4d9953e1d25ca8fc4b Signed-off-by: Luigi Rizzo --- drivers/nvme/host/pci.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 72fb675a696f4..b9d7bce30061f 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -72,6 +72,8 @@ static_assert(MAX_PRP_RANGE / NVME_CTRL_PAGE_SIZE <= (1 /* prp1 */ + NVME_MAX_NR_DESCRIPTORS * PRPS_PER_PAGE)); +DEFINE_IRQ_MODERATION_MODE_PARAMETER; + static int use_threaded_interrupts; module_param(use_threaded_interrupts, int, 0444); @@ -1989,6 +1991,7 @@ static int nvme_create_queue(struct nvme_queue *nvmeq, int qid, bool polled) result = queue_request_irq(nvmeq); if (result < 0) goto release_sq; + IRQ_MODERATION_SET_DEFAULT_MODE(pci_irq_vector(to_pci_dev(dev->dev), vector)); } set_bit(NVMEQ_ENABLED, &nvmeq->flags); -- 2.52.0.rc1.455.g30608eb744-goog