From: "Michael S. Tsirkin" <mst@redhat•com>
To: Xie Yongji <xieyongji@bytedance•com>
Cc: jasowang@redhat•com, stefanha@redhat•com, sgarzare@redhat•com,
parav@nvidia•com, hch@infradead•org,
christian.brauner@canonical•com, rdunlap@infradead•org,
willy@infradead•org, viro@zeniv•linux.org.uk, axboe@kernel•dk,
bcrl@kvack•org, corbet@lwn•net, mika.penttila@nextfour•com,
dan.carpenter@oracle•com, joro@8bytes•org,
gregkh@linuxfoundation•org, zhe.he@windriver•com,
xiaodong.liu@intel•com, joe@perches•com, robin.murphy@arm•com,
songmuchun@bytedance•com,
virtualization@lists•linux-foundation.org,
netdev@vger•kernel.org, kvm@vger•kernel.org,
linux-fsdevel@vger•kernel.org, iommu@lists•linux-foundation.org,
linux-kernel@vger•kernel.org, Will Deacon <will@kernel•org>
Subject: Re: [PATCH v11 01/12] iova: Export alloc_iova_fast() and free_iova_fast()
Date: Tue, 24 Aug 2021 14:08:33 -0400 [thread overview]
Message-ID: <20210824140758-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <20210818120642.165-2-xieyongji@bytedance.com>
On Wed, Aug 18, 2021 at 08:06:31PM +0800, Xie Yongji wrote:
> Export alloc_iova_fast() and free_iova_fast() so that
> some modules can make use of the per-CPU cache to get
> rid of rbtree spinlock in alloc_iova() and free_iova()
> during IOVA allocation.
>
> Signed-off-by: Xie Yongji <xieyongji@bytedance•com>
This needs ack from iommu maintainers. Guys?
> ---
> drivers/iommu/iova.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/iommu/iova.c b/drivers/iommu/iova.c
> index b6cf5f16123b..3941ed6bb99b 100644
> --- a/drivers/iommu/iova.c
> +++ b/drivers/iommu/iova.c
> @@ -521,6 +521,7 @@ alloc_iova_fast(struct iova_domain *iovad, unsigned long size,
>
> return new_iova->pfn_lo;
> }
> +EXPORT_SYMBOL_GPL(alloc_iova_fast);
>
> /**
> * free_iova_fast - free iova pfn range into rcache
> @@ -538,6 +539,7 @@ free_iova_fast(struct iova_domain *iovad, unsigned long pfn, unsigned long size)
>
> free_iova(iovad, pfn);
> }
> +EXPORT_SYMBOL_GPL(free_iova_fast);
>
> #define fq_ring_for_each(i, fq) \
> for ((i) = (fq)->head; (i) != (fq)->tail; (i) = ((i) + 1) % IOVA_FQ_SIZE)
> --
> 2.11.0
next prev parent reply other threads:[~2021-08-24 18:08 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-18 12:06 [PATCH v11 00/12] Introduce VDUSE - vDPA Device in Userspace Xie Yongji
2021-08-18 12:06 ` [PATCH v11 01/12] iova: Export alloc_iova_fast() and free_iova_fast() Xie Yongji
2021-08-23 6:24 ` Jason Wang
2021-08-24 18:08 ` Michael S. Tsirkin [this message]
2021-08-25 9:55 ` Will Deacon
2021-08-25 10:39 ` John Garry
2021-08-25 12:17 ` Yongji Xie
2021-08-27 9:03 ` John Garry
2021-08-18 12:06 ` [PATCH v11 02/12] file: Export receive_fd() to modules Xie Yongji
2021-08-18 12:06 ` [PATCH v11 03/12] vdpa: Fix some coding style issues Xie Yongji
2021-08-23 6:27 ` Jason Wang
2021-08-24 11:09 ` Stefano Garzarella
2021-08-18 12:06 ` [PATCH v11 04/12] vdpa: Add reset callback in vdpa_config_ops Xie Yongji
2021-08-23 6:31 ` Jason Wang
2021-08-23 7:44 ` Yongji Xie
2021-08-18 12:06 ` [PATCH v11 05/12] vhost-vdpa: Handle the failure of vdpa_reset() Xie Yongji
2021-08-23 6:32 ` Jason Wang
2021-08-24 11:12 ` Stefano Garzarella
2021-08-18 12:06 ` [PATCH v11 06/12] vhost-iotlb: Add an opaque pointer for vhost IOTLB Xie Yongji
2021-08-18 12:06 ` [PATCH v11 07/12] vdpa: Add an opaque pointer for vdpa_config_ops.dma_map() Xie Yongji
2021-08-18 12:06 ` [PATCH v11 08/12] vdpa: factor out vhost_vdpa_pa_map() and vhost_vdpa_pa_unmap() Xie Yongji
2021-08-18 12:06 ` [PATCH v11 09/12] vdpa: Support transferring virtual addressing during DMA mapping Xie Yongji
2021-08-18 12:06 ` [PATCH v11 10/12] vduse: Implement an MMU-based software IOTLB Xie Yongji
2021-08-27 8:57 ` John Garry
2021-08-27 9:25 ` Yongji Xie
2021-08-18 12:06 ` [PATCH v11 11/12] vduse: Introduce VDUSE - vDPA Device in Userspace Xie Yongji
2021-08-23 6:56 ` Jason Wang
2021-08-24 18:10 ` Michael S. Tsirkin
2021-08-25 5:37 ` Yongji Xie
2021-08-18 12:06 ` [PATCH v11 12/12] Documentation: Add documentation for VDUSE Xie Yongji
2021-08-23 6:57 ` Jason Wang
2021-08-23 7:54 ` Jason Wang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210824140758-mutt-send-email-mst@kernel.org \
--to=mst@redhat$(echo .)com \
--cc=axboe@kernel$(echo .)dk \
--cc=bcrl@kvack$(echo .)org \
--cc=christian.brauner@canonical$(echo .)com \
--cc=corbet@lwn$(echo .)net \
--cc=dan.carpenter@oracle$(echo .)com \
--cc=gregkh@linuxfoundation$(echo .)org \
--cc=hch@infradead$(echo .)org \
--cc=iommu@lists$(echo .)linux-foundation.org \
--cc=jasowang@redhat$(echo .)com \
--cc=joe@perches$(echo .)com \
--cc=joro@8bytes$(echo .)org \
--cc=kvm@vger$(echo .)kernel.org \
--cc=linux-fsdevel@vger$(echo .)kernel.org \
--cc=linux-kernel@vger$(echo .)kernel.org \
--cc=mika.penttila@nextfour$(echo .)com \
--cc=netdev@vger$(echo .)kernel.org \
--cc=parav@nvidia$(echo .)com \
--cc=rdunlap@infradead$(echo .)org \
--cc=robin.murphy@arm$(echo .)com \
--cc=sgarzare@redhat$(echo .)com \
--cc=songmuchun@bytedance$(echo .)com \
--cc=stefanha@redhat$(echo .)com \
--cc=viro@zeniv$(echo .)linux.org.uk \
--cc=virtualization@lists$(echo .)linux-foundation.org \
--cc=will@kernel$(echo .)org \
--cc=willy@infradead$(echo .)org \
--cc=xiaodong.liu@intel$(echo .)com \
--cc=xieyongji@bytedance$(echo .)com \
--cc=zhe.he@windriver$(echo .)com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox