From patchwork Fri Apr 18 06:47:44 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leon Romanovsky X-Patchwork-Id: 14056814 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 068A626A1CD; Fri, 18 Apr 2025 06:48:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744958933; cv=none; b=nNTJcip82lkpzXOy8arH0PNiZAHqB6CmLaRHXR/0VoYus/+v4VvJx3xkptzSow7xHYAxau3zBA59ivXq57zwXxJzTgwejme9fUGC09O2dpsNV5s6Vn5nIq5YS3GiSqly+gHOAmjEzETpZBFpvFS13q/ucBg4Xa418QcBVDXxlI0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744958933; c=relaxed/simple; bh=KevxVIzQY6F0EnJlBlznb+1ktDGR5CAEkB/J2PsBQFo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=dhmCs+HOu+aQC7LD/BlB5JfQsGsLIbC1UUgdSGcXhMDT5p2Iv8u1cFrsNgckv5any+MJ5U/0YcrRmLb2Q85bgPjsAj6sAsmTMwxfDXmF/BU+jNE/zT55BE0p3xwlN7dRp0kcLQ+c3jQW7IXC2PD0YKyqZjgqD9gs+rt4PXtKD4g= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=KWFj+/vO; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="KWFj+/vO" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C53FAC4CEE2; Fri, 18 Apr 2025 06:48:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744958932; bh=KevxVIzQY6F0EnJlBlznb+1ktDGR5CAEkB/J2PsBQFo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KWFj+/vOInb4BkFwMVNo03SMIwXqyVPAXT7V0xlVA5hwOkHkHH3foXrZ5AXA4Fjl+ gZyrCIGq59DPy1FnFT8zGFH2SkBIyM3021p5KU1yTgIG4UacHBts3/GeCL5uImnxVh eMIaJZF5C9mhaWM8AIsDqCVgGCgHYCKZDbZ3wpHtWyv9kMNsZsuWNOh2oJMvPBBvlO dFDWKPidKHAwWNBmhq0cq6OtE/sz58FeBWtYeuyfBdlZTYHr1AEX+NyIacs2onTivE N1FZJfRm+3wD9vB12tyDCgmQ1pIJtGSzoZv8x/8rbQS0RlZNLVnNVOUtSnpUO3alK3 7GNpLbrb9Gpdg== From: Leon Romanovsky To: Marek Szyprowski , Jens Axboe , Christoph Hellwig , Keith Busch Cc: Leon Romanovsky , Jake Edge , Jonathan Corbet , Jason Gunthorpe , Zhu Yanjun , Robin Murphy , Joerg Roedel , Will Deacon , Sagi Grimberg , Bjorn Helgaas , Logan Gunthorpe , Yishai Hadas , Shameer Kolothum , Kevin Tian , Alex Williamson , =?utf-8?b?SsOpcsO0bWUgR2xp?= =?utf-8?b?c3Nl?= , Andrew Morton , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-rdma@vger.kernel.org, iommu@lists.linux.dev, linux-nvme@lists.infradead.org, linux-pci@vger.kernel.org, kvm@vger.kernel.org, linux-mm@kvack.org, Niklas Schnelle , Chuck Lever , Luis Chamberlain , Matthew Wilcox , Dan Williams , Kanchan Joshi , Chaitanya Kulkarni Subject: [PATCH v8 14/24] RDMA/umem: Separate implicit ODP initialization from explicit ODP Date: Fri, 18 Apr 2025 09:47:44 +0300 Message-ID: X-Mailer: git-send-email 2.49.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Leon Romanovsky Create separate functions for the implicit ODP initialization which is different from the explicit ODP initialization. Signed-off-by: Leon Romanovsky --- drivers/infiniband/core/umem_odp.c | 91 +++++++++++++++--------------- 1 file changed, 46 insertions(+), 45 deletions(-) diff --git a/drivers/infiniband/core/umem_odp.c b/drivers/infiniband/core/umem_odp.c index 30cd8f353476..51d518989914 100644 --- a/drivers/infiniband/core/umem_odp.c +++ b/drivers/infiniband/core/umem_odp.c @@ -48,41 +48,44 @@ #include "uverbs.h" -static inline int ib_init_umem_odp(struct ib_umem_odp *umem_odp, - const struct mmu_interval_notifier_ops *ops) +static void ib_init_umem_implicit_odp(struct ib_umem_odp *umem_odp) +{ + umem_odp->is_implicit_odp = 1; + umem_odp->umem.is_odp = 1; + mutex_init(&umem_odp->umem_mutex); +} + +static int ib_init_umem_odp(struct ib_umem_odp *umem_odp, + const struct mmu_interval_notifier_ops *ops) { struct ib_device *dev = umem_odp->umem.ibdev; + size_t page_size = 1UL << umem_odp->page_shift; + unsigned long start; + unsigned long end; int ret; umem_odp->umem.is_odp = 1; mutex_init(&umem_odp->umem_mutex); - if (!umem_odp->is_implicit_odp) { - size_t page_size = 1UL << umem_odp->page_shift; - unsigned long start; - unsigned long end; - - start = ALIGN_DOWN(umem_odp->umem.address, page_size); - if (check_add_overflow(umem_odp->umem.address, - (unsigned long)umem_odp->umem.length, - &end)) - return -EOVERFLOW; - end = ALIGN(end, page_size); - if (unlikely(end < page_size)) - return -EOVERFLOW; - - ret = hmm_dma_map_alloc(dev->dma_device, &umem_odp->map, - (end - start) >> PAGE_SHIFT, - 1 << umem_odp->page_shift); - if (ret) - return ret; - - ret = mmu_interval_notifier_insert(&umem_odp->notifier, - umem_odp->umem.owning_mm, - start, end - start, ops); - if (ret) - goto out_free_map; - } + start = ALIGN_DOWN(umem_odp->umem.address, page_size); + if (check_add_overflow(umem_odp->umem.address, + (unsigned long)umem_odp->umem.length, &end)) + return -EOVERFLOW; + end = ALIGN(end, page_size); + if (unlikely(end < page_size)) + return -EOVERFLOW; + + ret = hmm_dma_map_alloc(dev->dma_device, &umem_odp->map, + (end - start) >> PAGE_SHIFT, + 1 << umem_odp->page_shift); + if (ret) + return ret; + + ret = mmu_interval_notifier_insert(&umem_odp->notifier, + umem_odp->umem.owning_mm, start, + end - start, ops); + if (ret) + goto out_free_map; return 0; @@ -106,7 +109,6 @@ struct ib_umem_odp *ib_umem_odp_alloc_implicit(struct ib_device *device, { struct ib_umem *umem; struct ib_umem_odp *umem_odp; - int ret; if (access & IB_ACCESS_HUGETLB) return ERR_PTR(-EINVAL); @@ -118,16 +120,10 @@ struct ib_umem_odp *ib_umem_odp_alloc_implicit(struct ib_device *device, umem->ibdev = device; umem->writable = ib_access_writable(access); umem->owning_mm = current->mm; - umem_odp->is_implicit_odp = 1; umem_odp->page_shift = PAGE_SHIFT; umem_odp->tgid = get_task_pid(current->group_leader, PIDTYPE_PID); - ret = ib_init_umem_odp(umem_odp, NULL); - if (ret) { - put_pid(umem_odp->tgid); - kfree(umem_odp); - return ERR_PTR(ret); - } + ib_init_umem_implicit_odp(umem_odp); return umem_odp; } EXPORT_SYMBOL(ib_umem_odp_alloc_implicit); @@ -248,7 +244,7 @@ struct ib_umem_odp *ib_umem_odp_get(struct ib_device *device, } EXPORT_SYMBOL(ib_umem_odp_get); -void ib_umem_odp_release(struct ib_umem_odp *umem_odp) +static void ib_umem_odp_free(struct ib_umem_odp *umem_odp) { struct ib_device *dev = umem_odp->umem.ibdev; @@ -258,14 +254,19 @@ void ib_umem_odp_release(struct ib_umem_odp *umem_odp) * It is the driver's responsibility to ensure, before calling us, * that the hardware will not attempt to access the MR any more. */ - if (!umem_odp->is_implicit_odp) { - mutex_lock(&umem_odp->umem_mutex); - ib_umem_odp_unmap_dma_pages(umem_odp, ib_umem_start(umem_odp), - ib_umem_end(umem_odp)); - mutex_unlock(&umem_odp->umem_mutex); - mmu_interval_notifier_remove(&umem_odp->notifier); - hmm_dma_map_free(dev->dma_device, &umem_odp->map); - } + mutex_lock(&umem_odp->umem_mutex); + ib_umem_odp_unmap_dma_pages(umem_odp, ib_umem_start(umem_odp), + ib_umem_end(umem_odp)); + mutex_unlock(&umem_odp->umem_mutex); + mmu_interval_notifier_remove(&umem_odp->notifier); + hmm_dma_map_free(dev->dma_device, &umem_odp->map); +} + +void ib_umem_odp_release(struct ib_umem_odp *umem_odp) +{ + if (!umem_odp->is_implicit_odp) + ib_umem_odp_free(umem_odp); + put_pid(umem_odp->tgid); kfree(umem_odp); }