On Mon, Dec 19, 2022 at 05:36:02PM +0800, Yongji Xie wrote: > On Mon, Dec 19, 2022 at 3:33 PM Michael S. Tsirkin <mst@xxxxxxxxxx> wrote: > > > > On Mon, Dec 05, 2022 at 04:41:17PM +0800, Xie Yongji wrote: > > > Export irq_create_affinity_masks() so that some modules > > > can make use of it to implement interrupt affinity > > > spreading mechanism. > > > > > > Signed-off-by: Xie Yongji <xieyongji@xxxxxxxxxxxxx> > > > > So this got nacked, what's the plan now? > > > > I‘d like to check with Christoph again first. > > Hi Christoph, > > Jason will post some patches to get rid of the DMA API for vDPA > simulators. And the irq affinity algorithm is independent of the IRQ > subsystem IIUC. So could you allow this patch so that we can reuse the > algorithm to select the best CPU (per-cpu affinity if possible, or at > least per-node) to run the virtqueue's irq callback. > > Thanks, > Yongji I think you need to explain why you are building low level affinity masks. what's the plan now? > > > --- > > > kernel/irq/affinity.c | 1 + > > > 1 file changed, 1 insertion(+) > > > > > > diff --git a/kernel/irq/affinity.c b/kernel/irq/affinity.c > > > index d9a5c1d65a79..f074a7707c6d 100644 > > > --- a/kernel/irq/affinity.c > > > +++ b/kernel/irq/affinity.c > > > @@ -487,6 +487,7 @@ irq_create_affinity_masks(unsigned int nvecs, struct irq_affinity *affd) > > > > > > return masks; > > > } > > > +EXPORT_SYMBOL_GPL(irq_create_affinity_masks); > > > > > > /** > > > * irq_calc_affinity_vectors - Calculate the optimal number of vectors > > > -- > > > 2.20.1 > > _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
