[PATCH V3 2/2] vhost_net: conditionally enable tx polling

We always poll tx for socket, this is sub optimal since: - it will be only used when we exceed the sndbuf of the socket. - since we use two independent polls for tx and vq, this will slightly increase the waitqueue traversing time and more important, vhost could not benefit from commit

[PATCH V3 1/2] vhost_net: stop polling socket during rx processing

We don't stop rx polling socket during rx processing, this will lead unnecessary wakeups from under layer net devices (E.g sock_def_readable() form tun). Rx will be slowed down in this way. This patch avoids this by stop polling socket during rx processing. A small drawback is that this introduces

[PATCH V3 0/2] vhost_net polling optimization

Hi: This series tries to optimize vhost_net polling at two points: - Stop rx polling for reduicng the unnecessary wakeups during handle_rx(). - Conditonally enable tx polling for reducing the unnecessary traversing and spinlock touching. Test shows about 17% improvement on rx pps. Please

[PATCH v7 02/12] mm: migrate: support non-lru movable page migration

We have allowed migration for only LRU pages until now and it was enough to make high-order pages. But recently, embedded system(e.g., webOS, android) uses lots of non-movable pages(e.g., zram, GPU memory) so we have seen several reports about troubles of small high-order allocation. For fixing

[PATCH v7 03/12] mm: balloon: use general non-lru movable page feature

Now, VM has a feature to migrate non-lru movable pages so balloon doesn't need custom migration hooks in migrate.c and compaction.c. Instead, this patch implements page->mapping->a_ops->{isolate|migrate|putback} functions. With that, we could remove hooks for ballooning in general migration

[PATCH v7 00/12] Support non-lru page migration

Recently, I got many reports about perfermance degradation in embedded system(Android mobile phone, webOS TV and so on) and easy fork fail. The problem was fragmentation caused by zram and GPU driver mainly. With memory pressure, their pages were spread out all of pageblock and it cannot be

Re: [PATCH v6v3 02/12] mm: migrate: support non-lru movable page migration

On Tue, May 31, 2016 at 09:52:48AM +0200, Vlastimil Babka wrote: > On 05/31/2016 02:01 AM, Minchan Kim wrote: > >Per Vlastimi's review comment. > > > >Thanks for the detail review, Vlastimi! > >If you have another concern, feel free to say. > > I don't for now :) > > [...] > > >Cc: Rik van Riel

Re: [PATCH] Add virtio gpu driver.

On Tue, 31 May 2016 08:29:20 +0200 Gerd Hoffmann wrote: > Hi, > > > > Why attach the hotspot to the plane? Wouldn't it make more sense to > > > make it a framebuffer property? > > > > We don't have properties on the framebuffer. I guess you /could/ just add > > it

[PATCH] virtio-gpu: use src not crtc

Pick up the correct source rectangle from framebuffer. Without this multihead setups are not working correctly. Signed-off-by: Gerd Hoffmann --- drivers/gpu/drm/virtio/virtgpu_plane.c | 31 ++- 1 file changed, 18 insertions(+), 13 deletions(-)

[PATCH 5/5] virtio-gpu: pick up hotspot from framebuffer

Signed-off-by: Gerd Hoffmann --- drivers/gpu/drm/virtio/virtgpu_plane.c | 20 +--- 1 file changed, 13 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c index 4780354..b7778a7 100644 ---

[PATCH 3/5] virtio-gpu: switch to atomic cursor interfaces

Signed-off-by: Gerd Hoffmann --- drivers/gpu/drm/virtio/virtgpu_display.c | 102 -- drivers/gpu/drm/virtio/virtgpu_drv.h | 1 + drivers/gpu/drm/virtio/virtgpu_plane.c | 105 --- 3 files changed, 109 insertions(+),

[PATCH 2/5] virtio-gpu: add atomic_commit function

Do modesets first, then call drm_atomic_helper_commit_planes with active_only = true. That way the outputs doesn't get disabled temporarly on atomic commits. Signed-off-by: Gerd Hoffmann --- drivers/gpu/drm/virtio/virtgpu_display.c | 22 +-

[PATCH 1/5] virtio-gpu: fix output lookup

Needed for multihead setups where we can have disabled outputs and therefore plane->crtc can be NULL. Signed-off-by: Gerd Hoffmann --- drivers/gpu/drm/virtio/virtgpu_plane.c | 8 +++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git

Re: [PATCH v6v3 02/12] mm: migrate: support non-lru movable page migration

On 05/31/2016 02:01 AM, Minchan Kim wrote: Per Vlastimi's review comment. Thanks for the detail review, Vlastimi! If you have another concern, feel free to say. I don't for now :) [...] Cc: Rik van Riel Cc: Vlastimil Babka Cc: Joonsoo Kim

Re: PATCH v6v2 02/12] mm: migrate: support non-lru movable page migration

On 05/30/2016 06:25 PM, Minchan Kim wrote: --- a/mm/compaction.c +++ b/mm/compaction.c @@ -81,6 +81,39 @@ static inline bool migrate_async_suitable(int migratetype) #ifdef CONFIG_COMPACTION +int PageMovable(struct page *page) +{ + struct address_space *mapping; + +

Re: [PATCH v3 7/7] [wip] virtio-gpu: add page flip support

On Tue, May 31, 2016 at 9:34 AM, Gerd Hoffmann wrote: > Hi, > >> > Right now the virtual outputs are linked to drm_crtc. To apply any >> > changes I need to lookup the crtc to figure which virtual output should >> > be updated. > >> > So, setting active_only should make sure

Re: [PATCH v3 7/7] [wip] virtio-gpu: add page flip support

Hi, > > Right now the virtual outputs are linked to drm_crtc. To apply any > > changes I need to lookup the crtc to figure which virtual output should > > be updated. > > So, setting active_only should make sure I have a valid crtc pointer on > > plane updates, right? It probably also skips

Re: [PATCH] virtio-gpu: fix output lookup

On Mon, May 30, 2016 at 02:03:26PM +0200, Gerd Hoffmann wrote: > Needed for multihead setups where we can have disabled > outputs and therefore plane->crtc can be NULL. > > Signed-off-by: Gerd Hoffmann Applied to drm-misc, thanks. -Daniel > --- >

Re: [PATCH] Add virtio gpu driver.

On Tue, May 31, 2016 at 8:29 AM, Gerd Hoffmann wrote: >> but it also means that >> atomic userspace can't use hotspots before we add properties to fbs. And >> doing that is a bit tricky since drm_framebuffer objects are meant to be >> invariant - this assumption is deeply

Re: [PATCH v3 7/7] [wip] virtio-gpu: add page flip support

On Tue, May 31, 2016 at 8:18 AM, Gerd Hoffmann wrote: >> > https://lists.freedesktop.org/archives/dri-devel/2016-May/108772.html >> >> Hm, smells more like virtio isn't too happy with the default ordering of >> the commit operation. The default is: >> >> - Disable any

Re: [PATCH] Add virtio gpu driver.

Hi, > > Why attach the hotspot to the plane? Wouldn't it make more sense to > > make it a framebuffer property? > > We don't have properties on the framebuffer. I guess you /could/ just add > it internally to struct drm_framebuffer, and not bother exposing to > userspace. I guess that would

Re: [PATCH v3 7/7] [wip] virtio-gpu: add page flip support

Hi, > > https://lists.freedesktop.org/archives/dri-devel/2016-May/108772.html > > Hm, smells more like virtio isn't too happy with the default ordering of > the commit operation. The default is: > > - Disable any crtc/encoders that need to be disabled/change. > - Bash new plane setup into hw.