linux-stable.git/drivers/gpu/drm/ttm, branch v3.18.2

drm/ttm: Don't evict BOs outside of the requested placement range

2014-10-16T22:34:08+00:00

The radeon driver uses placement range restrictions for several reasons,
in particular to make sure BOs in VRAM can be accessed by the CPU, e.g.
during a page fault.

Without this change, TTM could evict other BOs while trying to satisfy
the requested placement, even if the evicted BOs were outside of the
requested placement range. Doing so didn't free up any space in the
requested placement range, so the (potentially high) eviction cost was
incurred for no benefit.

Nominating for stable because radeon driver changes in 3.17 made this
much more noticeable than before.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=84662
Cc: stable@vger.kernel.org
Signed-off-by: Michel Dänzer 
Signed-off-by: Alex Deucher

drm/ttm: Don't skip fpfn check if lpfn is 0 in ttm_bo_mem_compat

2014-10-16T22:34:08+00:00

Reviewed-by: Christian König 
Signed-off-by: Michel Dänzer 
Signed-off-by: Alex Deucher

drm/ttm: add reservation_object as argument to ttm_bo_init

2014-09-30T12:04:00+00:00

This allows importing reservation objects from dma-bufs.

Signed-off-by: Maarten Lankhorst

drm/ttm: Clean usage of ttm_io_prot() with TTM_PL_FLAG_CACHED

2014-09-23T05:00:26+00:00

Today, most callers of ttm_io_prot() check TTM_PL_FLAG_CACHED before
calling it since on some archs it will unconditionally create non-cached
mappings.

But not all callers do which is incorrect as far as I can tell.

Instead, move that check inside ttm_io_port() itself for all archs
and make powerpc use the same implementation as ia64 and arm

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Dave Airlie

drm/ttm: make sure format string cannot leak in

2014-09-17T01:15:01+00:00

While zone->name is currently hard coded, the call to kobject_init_and_add()
should follow the more defensive argument list usage (as already done in
other places in ttm_memory.c) where "%s" is used instead of directly passing
in a variable as a format string.

Signed-off-by: Kees Cook 
Signed-off-by: Dave Airlie

drm/ttm: allow fence to be added as shared

2014-09-11T14:46:00+00:00

This patch adds a new flag to the ttm_validate_buffer list to
add the fence as shared to the reservation object.

Signed-off-by: Christian König 
Signed-off-by: Alex Deucher

drm/ttm: use rcu in core ttm

2014-09-02T15:28:47+00:00

Signed-off-by: Maarten Lankhorst

drm/ttm: flip the switch, and convert to dma_fence

2014-09-02T14:41:50+00:00

Signed-off-by: Maarten Lankhorst

drm/ttm: kill off some members to ttm_validate_buffer

2014-09-01T08:18:03+00:00

This reorders the list to keep track of what buffers are reserved,
so previous members are always unreserved.

This gets rid of some bookkeeping that's no longer needed,
while simplifying the code some.

Signed-off-by: Maarten Lankhorst

drm/ttm: add interruptible parameter to ttm_eu_reserve_buffers

2014-09-01T08:16:43+00:00

It seems some drivers really want this as a parameter,
like vmwgfx.

Signed-off-by: Maarten Lankhorst