From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f202.google.com (mail-pf1-f202.google.com [209.85.210.202]) (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 82E07395AF8 for ; Mon, 29 Jun 2026 22:38:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.202 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782772695; cv=none; b=EA4ihU9bAz4uCsBbCY+UPU5RjPoZwldx+/8gjHSDTmmGfCMZHIEH2jzx0If+jrwqdSj5898YsI17mNCkmzbdXEeWX7CV7o7gw1Pmp3LPU943bzJHP1vcpunNRN+DfNRtR8CGBPWSy/N76QB503xm8e/mD6qCs2DdP4izj/x7Juk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782772695; c=relaxed/simple; bh=PebDSBjVnzJxPMYkMlZ7Ut6H199SaSMN65gFYPZM5mw=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=OPalA5wydkb0L1xmEKHAM/rreyg9FLegF3laIQj5xaeV4eDr6OHw/zi4o9iRTyLDAQ7RWna1K8A9/cc0RFgfBYJC84z6O9h7snLVTxFjOOv5gLNf333fElXG6Xa3CHn1vSR9lJjwworLMiyZ2LWPR4jB9pkdfg6iZm1PuZDwydE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--sharaienko.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=oG3Wi1hq; arc=none smtp.client-ip=209.85.210.202 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--sharaienko.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="oG3Wi1hq" Received: by mail-pf1-f202.google.com with SMTP id d2e1a72fcca58-8478947e047so862943b3a.3 for ; Mon, 29 Jun 2026 15:38:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1782772694; x=1783377494; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=yKFJ2qfmBSJNvRDeviBTe+OrARoeY8Gr8ZW8qTJSJ58=; b=oG3Wi1hq/+RZDeFxrRIhb9VrwWlbxs0I2z/K5q27weEwAjKA15oi/BoO4OmK8E+kaW LYllDE1VMAntYlO3LwGnqD7Ocve/23IYdY7mzYCju72v/XGcr+1Edn8Bi9qDXrrZ27PV TxOV+Of1CwJGMAcQNE/SZeRxy9TF0GDP59Uv9tFf+Aeh4SJKXFP9CAgzVRZrt/ZIonRj I5cLF1r591REncQGDU5t0Mw1wQawpQO7KDgCx7TYxCxd83izi7UVGyzJj8JEa9d1RAxu CykSAE9QTvE6R9RawZQlXWDRT+LQY1lnMq/lMo5FOF+CSvApvtVcePr57NzehadBnWzH llEQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782772694; x=1783377494; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=yKFJ2qfmBSJNvRDeviBTe+OrARoeY8Gr8ZW8qTJSJ58=; b=XnQs/fHc+MeCTL0I/IDghMqXSbN41ZkBEe1lvQavtc5Nc7d66IPcyVkw87w9jrbrec RE0DhE4gO6x4TyVqPuRiLhwED5Ug9Hq/Rr4oo3HN+Kqr16DYdWmSVOCb5SvEVZD9sTA+ +O0/mnAbm5Hphf5vm6ZufJxguv6HfN7arvJoD1MC0qRLFBAxO4JatzbxABBb6DEmXFBM F1vE3vKD4luUqOH0nVwlhEIpXU3xIB6l9FMpXoE2LSu6Y4ER2edv6QJAGVu6CIz54HZE kUYa3ww76HCEbYy4ljZ8dAiP8x+QuKaWTAOmWzuLceHSHhz6AbQF0gZF+0Hro4Yo8jYD D69g== X-Forwarded-Encrypted: i=1; AHgh+RrrjnOy9ExtpH1gtnqQ6HdC/+cUDDWfZY8oy9KrAeH7Rgw8Nu3zcd1z6d49XWxVaiIHGtJbQgtUn6KM4vA=@vger.kernel.org X-Gm-Message-State: AOJu0Yx0cBLtN5p/Cp8ZFSufpmQUTT4NIyEl3wBEQUj6zFXuJaTu6wxk M/gvXmDF0VoUGsO+5V7nVtS+zIOUgHV8l1ie3qET+VCoEqQWEESJkIEHANyHhUav2wp3UADmaJk wZzYlEd2HHuyAsXlhuM2TxA== X-Received: from pfnx18.prod.google.com ([2002:aa7:84d2:0:b0:846:aff8:5614]) (user=sharaienko job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a00:1ca6:b0:847:8250:2b2a with SMTP id d2e1a72fcca58-8479f40d50emr808631b3a.60.1782772693408; Mon, 29 Jun 2026 15:38:13 -0700 (PDT) Date: Mon, 29 Jun 2026 22:37:58 +0000 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.55.0.rc0.799.gd6f94ed593-goog Message-ID: <20260629223759.2637162-1-sharaienko@google.com> Subject: [PATCH v2] dma-coherent: use KiB in DMA allocation logs From: Vova Sharaienko To: Marek Szyprowski , Robin Murphy Cc: android-mm@google.com, Vova Sharaienko , kernel-team@android.com, iommu@lists.linux.dev, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Update DMA reserved memory pool allocation log messages to display sizes in KiB instead of MiB. Using MiB caused allocations less than 1 MiB to be logged as 0 MiB due to integer truncation. KiB provides better precision for smaller memory regions specified in the Device Tree. Signed-off-by: Vova Sharaienko --- v1: https://lore.kernel.org/all/20260624000516.597555-1-sharaienko@google.com/ Addressed feedback from v1: changed %ld to %llu for size in KiB to avoid truncation for sizes (which can be 64-bit on a 32-bit kernel) larger than 4 GiB. kernel/dma/coherent.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/kernel/dma/coherent.c b/kernel/dma/coherent.c index bcdc0f76d2e8..67f9a88ec4fe 100644 --- a/kernel/dma/coherent.c +++ b/kernel/dma/coherent.c @@ -69,8 +69,8 @@ static struct dma_coherent_mem *dma_init_coherent_memory(phys_addr_t phys_addr, kfree(dma_mem); out_unmap_membase: memunmap(mem_base); - pr_err("Reserved memory: failed to init DMA memory pool at %pa, size %zd MiB\n", - &phys_addr, size / SZ_1M); + pr_err("Reserved memory: failed to init DMA memory pool at %pa, size %zu KiB\n", + &phys_addr, size / SZ_1K); return ERR_PTR(-ENOMEM); } @@ -384,8 +384,8 @@ static int __init rmem_dma_setup(unsigned long node, struct reserved_mem *rmem) } #endif - pr_info("Reserved memory: created DMA memory pool at %pa, size %ld MiB\n", - &rmem->base, (unsigned long)rmem->size / SZ_1M); + pr_info("Reserved memory: created DMA memory pool at %pa, size %llu KiB\n", + &rmem->base, (unsigned long long)(rmem->size / SZ_1K)); return 0; } -- 2.55.0.rc0.799.gd6f94ed593-goog