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
---
drivers/iommu/iova.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/driv
在 2021/8/18 下午8:06, Xie Yongji 写道:
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
Acked-by: Jason Wang
(If we need respin,
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
This needs
On Tue, Aug 24, 2021 at 02:08:33PM -0400, Michael S. Tsirkin wrote:
> 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_i
On 25/08/2021 10:55, Will Deacon wrote:
On Tue, Aug 24, 2021 at 02:08:33PM -0400, Michael S. Tsirkin wrote:
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 spinl
On Wed, Aug 25, 2021 at 6:35 PM John Garry wrote:
>
> On 25/08/2021 10:55, Will Deacon wrote:
> > On Tue, Aug 24, 2021 at 02:08:33PM -0400, Michael S. Tsirkin wrote:
> >> On Wed, Aug 18, 2021 at 08:06:31PM +0800, Xie Yongji wrote:
> >>> Export alloc_iova_fast() and free_iova_fast() so that
> >>> s
On 25/08/2021 13:17, Yongji Xie wrote:
JFYI, There was a preliminary discussion to move the iova rcache code
(which the iova fast alloc and free functions are based on) out of the
iova code and maybe into dma-iommu (being the only user). There was
other motivation.
Would it be better to move th
