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88 Commits

Author SHA1 Message Date
Christian König
97588b5b9a drm/ttm: remove pointers to globals 
As the name says global memory and bo accounting is global. So it doesn't
make to much sense having pointers to global structures all around the code.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Thomas Hellström <thellstrom@vmware.com>
Link: https://patchwork.freedesktop.org/patch/332879/
 2019-10-25 11:40:51 +02:00
Christian König
453393369d drm/ttm: fix incrementing the page pointer for huge pages 
When we increment the counter we need to increment the pointer as well.

Signed-off-by: Christian König <christian.koenig@amd.com>
Fixes: e16858a7e6e7 drm/ttm: fix start page for huge page check in ttm_put_pages()
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2019-04-11 10:01:51 -05:00
Christian König
ac1e516d5a drm/ttm: fix start page for huge page check in ttm_put_pages() 
The first page entry is always the same with itself.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2019-04-11 10:01:23 -05:00
Christian König
a66477b0ef drm/ttm: fix out-of-bounds read in ttm_put_pages() v2 
When ttm_put_pages() tries to figure out whether it's dealing with
transparent hugepages, it just reads past the bounds of the pages array
without a check.

v2: simplify the test if enough pages are left in the array (Christian).

Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Fixes: 5c42c64f7d ("drm/ttm: fix the fix for huge compound pages")
Cc: stable@vger.kernel.org
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2019-04-11 10:01:23 -05:00
Huang Rui
d55f9b8742 drm/ttm: clean up non-x86 definitions on ttm_page_alloc 
All non-x86 definitions are moved to ttm_set_memory header, so remove it from
ttm_page_alloc.c.

Suggested-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Bas Nieuwenhuizen <basni@chromium.org>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2018-07-27 15:00:14 -05:00
Kees Cook
6da2ec5605 treewide: kmalloc() -> kmalloc_array() 
The kmalloc() function has a 2-factor argument form, kmalloc_array(). This
patch replaces cases of:

        kmalloc(a * b, gfp)

with:
        kmalloc_array(a * b, gfp)

as well as handling cases of:

        kmalloc(a * b * c, gfp)

with:

        kmalloc(array3_size(a, b, c), gfp)

as it's slightly less ugly than:

        kmalloc_array(array_size(a, b), c, gfp)

This does, however, attempt to ignore constant size factors like:

        kmalloc(4 * 1024, gfp)

though any constants defined via macros get caught up in the conversion.

Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.

The tools/ directory was manually excluded, since it has its own
implementation of kmalloc().

The Coccinelle script used for this was:

// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@

(
  kmalloc(
-	(sizeof(TYPE)) * E
+	sizeof(TYPE) * E
  , ...)
|
  kmalloc(
-	(sizeof(THING)) * E
+	sizeof(THING) * E
  , ...)
)

// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@

(
  kmalloc(
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(unsigned char) * COUNT
+	COUNT
  , ...)
)

// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@

(
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * (COUNT_ID)
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * COUNT_ID
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * (COUNT_CONST)
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * COUNT_CONST
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * (COUNT_ID)
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * COUNT_ID
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * (COUNT_CONST)
+	COUNT_CONST, sizeof(THING)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * COUNT_CONST
+	COUNT_CONST, sizeof(THING)
  , ...)
)

// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@

- kmalloc
+ kmalloc_array
  (
-	SIZE * COUNT
+	COUNT, SIZE
  , ...)

// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@

(
  kmalloc(
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kmalloc(
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kmalloc(
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kmalloc(
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kmalloc(
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kmalloc(
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kmalloc(
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kmalloc(
-	sizeof(THING) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
)

// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@

(
  kmalloc(
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kmalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kmalloc(
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kmalloc(
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kmalloc(
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  kmalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
)

// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@

(
  kmalloc(
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	COUNT * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
)

// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@

(
  kmalloc(C1 * C2 * C3, ...)
|
  kmalloc(
-	(E1) * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kmalloc(
-	(E1) * (E2) * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kmalloc(
-	(E1) * (E2) * (E3)
+	array3_size(E1, E2, E3)
  , ...)
|
  kmalloc(
-	E1 * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
)

// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@

(
  kmalloc(sizeof(THING) * C2, ...)
|
  kmalloc(sizeof(TYPE) * C2, ...)
|
  kmalloc(C1 * C2 * C3, ...)
|
  kmalloc(C1 * C2, ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * (E2)
+	E2, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * E2
+	E2, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * (E2)
+	E2, sizeof(THING)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * E2
+	E2, sizeof(THING)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	(E1) * E2
+	E1, E2
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	(E1) * (E2)
+	E1, E2
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	E1 * E2
+	E1, E2
  , ...)
)

Signed-off-by: Kees Cook <keescook@chromium.org>
 2018-06-12 16:19:22 -07:00
Michel Dänzer
da291320ba drm/ttm: Use GFP_TRANSHUGE_LIGHT for allocating huge pages 
GFP_TRANSHUGE tries very hard to allocate huge pages, which can result
in long delays with high memory pressure. I have observed firefox
freezing for up to around a minute due to this while restic was taking
a full system backup.

Since we don't really need huge pages, use GFP_TRANSHUGE_LIGHT |
__GFP_NORETRY instead, in order to fail quickly when there are no huge
pages available.

Set __GFP_KSWAPD_RECLAIM as well, in order for huge pages to be freed
up in the background if necessary.

With these changes, I'm no longer seeing freezes during a restic backup.

Cc: stable@vger.kernel.org
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2018-05-09 15:16:30 -05:00
Roger He
ec3fe391bd drm/ttm: check if free mem space is under the lower limit 
the free mem space and the lower limit both include two parts:
system memory and swap space.

For the OOM triggered by TTM, that is the case as below:
first swap space is full of swapped out pages and soon
system memory also is filled up with ttm pages. and then
any memory allocation request will run into OOM.

to cover two cases:
a. if no swap disk at all or free swap space is under swap mem
   limit but available system mem is bigger than sys mem limit,
   allow TTM allocation;

b. if the available system mem is less than sys mem limit but
   free swap space is bigger than swap mem limit, allow TTM
   allocation.

v2: merge two memory limit(swap and system) into one
v3: keep original behavior except ttm_opt_ctx->flags with
    TTM_OPT_FLAG_FORCE_ALLOC
v4: always set force_alloc as tx->flags & TTM_OPT_FLAG_FORCE_ALLOC
v5: add an attribute for lower_mem_limit
v6: set lower_mem_limit as 0 to keep original behavior

Signed-off-by: Roger He <Hongbo.He@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2018-02-26 23:09:46 -05:00
Christian König
3231a7696e drm/ttm: drop ttm->glob 
The pointer is available as ttm->bdev->glob as well.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2018-02-26 23:09:45 -05:00
Roger He
4d869f2598 drm/ttm: add the missed global memory count update 
when ttm_mem_global_alloc_page fails, we should call
ttm_mem_global_free_page to update memory count for
the ttm pages which already run ttm_mem_global_alloc_page
successfully

Signed-off-by: Roger He <Hongbo.He@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2018-02-19 14:17:59 -05:00
Andrey Grodzovsky
cb5f1a52ca drm/ttm: Allow page allocations w/o triggering OOM.. 
This to allow drivers to choose to avoid OOM invocation and handle
page allocation failures instead.

v2:
Remove extra new lines.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2018-02-19 14:17:58 -05:00
Dave Airlie
22bc72c807 Merge branch 'drm-next-4.16' of git://people.freedesktop.org/~agd5f/linux into drm-next 
A few more fixes for 4.16, nothing major.

A few more fixes for 4.16.  This is on top of the pull request from
last week.  Most notable change here is a fix to the link order for
the now separate from amdgpu GPU scheduler to fix crashes when the
modules are build into the kernel rather than as modules.

* 'drm-next-4.16' of git://people.freedesktop.org/~agd5f/linux:
  drm: fix gpu scheduler link order
  drm/amd/display: Demote error print to debug print when ATOM impl missing
  drm/amdgpu: Avoid leaking PM domain on driver unbind (v2)
  drm/amd/amdgpu: Add Polaris version check
  drm/amdgpu: Reenable manual GPU reset from sysfs
  drm/amdgpu: disable MMHUB power gating on raven
  drm/ttm: Don't unreserve swapped BOs that were previously reserved
  drm/ttm: Don't add swapped BOs to swap-LRU list
  drm/amdgpu: only check for ECC on Vega10
  drm/amd/powerplay: Fix smu_table_entry.handle type
  drm/ttm: add VADDR_FLAG_UPDATED_COUNT to correctly update dma_page global count
  drm/radeon: fill in rb backend map on evergreen/ni.
  drm/amdgpu/gfx9: fix ngg enablement to clear gds reserved memory (v2)
  drm/ttm: only free pages rather than update global memory count together
  drm/amdgpu: fix CPU based VM updates
  drm/amdgpu: fix typo in amdgpu_vce_validate_bo
  drm/amdgpu: fix amdgpu_vm_pasid_fault_credit
  drm/ttm: check the return value of register_shrinker
  drm/radeon: fix sparse warning: Should it be static?
 2018-01-25 11:40:54 +10:00
Dave Airlie
4a6cc7a44e BackMerge tag 'v4.15-rc8' into drm-next 
Linux 4.15-rc8

Daniel requested this for so the intel CI won't fall over on drm-next
so often.
 2018-01-18 09:32:15 +10:00
Roger He
9483ce7c6e drm/ttm: only free pages rather than update global memory count together 
if ttm_get_pages or ttm_mem_global_alloc_page fail, should not update
global memory count.

Signed-off-by: Roger He <Hongbo.He@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Tested-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Acked-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2018-01-16 15:35:27 -05:00
Roger He
e2721595e4 drm/ttm: check the return value of register_shrinker 
This fixes the build warning:
"ignoring return value of 'register_shrinker', declared with
attribute warn_unused_result [-Wunused-result]"

Signed-off-by: Roger He <Hongbo.He@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2018-01-16 15:35:26 -05:00
Xiongwei Song
19d859a720 drm/ttm: check the return value of kzalloc 
In the function ttm_page_alloc_init, kzalloc call is made for variable
_manager, we need to check its return value, it may return NULL.

Signed-off-by: Xiongwei Song <sxwjean@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2018-01-02 14:54:05 -05:00
Roger He
d0cef9fa44 drm/ttm: use an operation ctx for ttm_tt_populate in ttm_bo_driver (v2) 
forward the operation context to ttm_tt_populate as well,
and the ultimate goal is swapout enablement for reserved BOs.

v2: squash in fix for vboxvideo

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-12-28 09:48:19 -05:00
Roger He
9de2fb99eb drm/ttm: use an operation ctx for ttm_mem_global_alloc_page 
forward the operation context to ttm_mem_global_alloc_page as well,
and the ultimate goal is swapout enablement for reserved BOs.

Here reserved BOs refer to all the BOs which share same reservation object

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-12-27 11:38:55 -05:00
Monk Liu
13d3fc69a0 drm/ttm: max_cpages is in unit of native page 
fix calculation.

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-12-12 15:39:45 -05:00
Monk Liu
a782fc8cc6 drm/ttm: fix incorrect calculate on shrink_pages 
shrink_pages is in unit of Order after ttm_page_pool_free,
but it is used by nr_free in next round so need change
it into native page unit

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Roger He <Hongbo.He@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-12-12 15:39:20 -05:00
Monk Liu
a8d25a8629 drm/ttm: max_cpages is in unit of native page 
fix calculation.

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-12-12 14:48:52 -05:00
Monk Liu
0aaa59f525 drm/ttm: fix incorrect calculate on shrink_pages 
shrink_pages is in unit of Order after ttm_page_pool_free,
but it is used by nr_free in next round so need change
it into native page unit

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Roger He <Hongbo.He@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-12-12 14:46:25 -05:00
Christian König
ae937fe196 drm/ttm: swap consecutive allocated pooled pages v4 
When we detect consecutive allocation of pages swap them to avoid
accidentally freeing them as huge page.

v2: use swap
v3: check if it's really the first allocated page
v4: don't touch the loop variable

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Roger He <Hongbo.He@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-12-06 12:48:32 -05:00
Christian König
fdb1a2236b drm/ttm: swap consecutive allocated cached pages v3 
When we detect consecutive allocation of pages swap them to avoid
accidentally freeing them as huge page.

v2: use swap
v3: check if it's really the first allocated page

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Roger He <Hongbo.He@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-12-06 12:48:32 -05:00
Roger He
1bfcbad18f drm/ttm: roundup the shrink request to prevent skip huge pool 
e.g. shrink reqeust is less than 512, the logic will skip huge pool

Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-12-06 12:48:15 -05:00
Roger He
444f8ef3f8 drm/ttm: add page order support in ttm_pages_put 
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-12-06 12:48:15 -05:00
Roger He
154683dd39 drm/ttm: add set_pages_wb for handling page order more than zero 
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-12-06 12:48:14 -05:00
Roger He
750a25037c drm/ttm: add page order in page pool 
to indicate page order for each element in the pool

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-12-06 12:48:01 -05:00
Roger He
f991c0ec2b drm/ttm: use NUM_PAGES_TO_ALLOC always 
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-12-06 12:48:00 -05:00
Christian König
e60bb46b57 drm/ttm: swap consecutive allocated pooled pages v4 
When we detect consecutive allocation of pages swap them to avoid
accidentally freeing them as huge page.

v2: use swap
v3: check if it's really the first allocated page
v4: don't touch the loop variable

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Roger He <Hongbo.He@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-12-06 09:28:31 -05:00
Christian König
5ff7ec02f2 drm/ttm: swap consecutive allocated cached pages v3 
When we detect consecutive allocation of pages swap them to avoid
accidentally freeing them as huge page.

v2: use swap
v3: check if it's really the first allocated page

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Roger He <Hongbo.He@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-12-05 14:37:06 -05:00
Roger He
2bf257d662 drm/ttm: roundup the shrink request to prevent skip huge pool 
e.g. shrink reqeust is less than 512, the logic will skip huge pool

Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-12-05 14:37:06 -05:00
Roger He
bae5c5b50b drm/ttm: add page order support in ttm_pages_put 
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-12-05 14:37:06 -05:00
Roger He
54ddc5f2d7 drm/ttm: add set_pages_wb for handling page order more than zero 
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-12-05 14:37:05 -05:00
Roger He
6d5e4e3213 drm/ttm: add page order in page pool 
to indicate page order for each element in the pool

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-12-05 14:37:05 -05:00
Roger He
1ee0d3d778 drm/ttm: use NUM_PAGES_TO_ALLOC always 
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-12-05 14:37:05 -05:00
Dave Airlie
503505bfea Merge branch 'drm-fixes-4.15' of git://people.freedesktop.org/~agd5f/linux into drm-fixes 
Fixes for 4.15.  Highlights:
- DC fixes for S3, gamma, audio, pageflipping, etc.
- fix a regression in radeon from kfd removal
- fix a ttm regression with swiotlb disabled
- misc other fixes

* 'drm-fixes-4.15' of git://people.freedesktop.org/~agd5f/linux: (36 commits)
  drm/radeon: remove init of CIK VMIDs 8-16 for amdkfd
  drm/ttm: fix populate_and_map() functions once more
  drm/amd/display: USB-C / thunderbolt dock specific workaround
  drm/amd/display: Switch to drm_atomic_helper_wait_for_flip_done
  drm/amd/display: fix gamma setting
  drm/amd/display: Do not put drm_atomic_state on resume
  drm/amd/display: Fix couple more inconsistent NULL checks in dc_resource
  drm/amd/display: Fix potential NULL and mem leak in create_links
  drm/amd/display: Fix hubp check in set_cursor_position
  drm/amd/display: Fix use before NULL check in validate_timing
  drm/amd/display: Bunch of smatch error and warning fixes in DC
  drm/amd/display: Fix amdgpu_dm bugs found by smatch
  drm/amd/display: try to find matching audio inst for enc inst first
  drm/amd/display: fix seq issue: turn on clock before programming afmt.
  drm/amd/display: fix memory leaks on error exit return
  drm/amd/display: check plane state before validating fbc
  drm/amd/display: Do DC mode-change check when adding CRTCs
  drm/amd/display: Revert noisy assert messages
  drm/amd/display: fix split viewport rounding error
  drm/amd/display: Check aux channel before MST resume
  ...
 2017-12-01 09:15:57 +10:00
Christian König
1569d651f1 drm/ttm: fix populate_and_map() functions once more 
This reverts "drm/ttm: Fix configuration error around populate_and_map()
functions".

This fix has gone into the wrong direction. Those helpers should be
available even when neither CONFIG_INTEL_IOMMU nor CONFIG_SWIOTLB are
set.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-11-29 14:42:35 -05:00
Dave Airlie
33d22c2ed6 drm/ttm: don't attempt to use hugepages if dma32 requested (v2) 
The commit below introduced thp support for ttm allocations, however it didn't
take into account the case where dma32 was requested. Some drivers always request
dma32, and the bochs driver is one of those.

This fixes an oops:

[   30.108507] ------------[ cut here ]------------
[   30.108920] kernel BUG at ./include/linux/gfp.h:408!
[   30.109356] invalid opcode: 0000 [#1] SMP
[   30.109700] Modules linked in: fuse nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack devlink ip_set nfnetlink ebtable_nat ebtable_broute bridge ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack libcrc32c iptable_mangle iptable_raw iptable_security ebtable_filter ebtables ip6table_filter ip6_tables snd_hda_codec_generic kvm_intel kvm snd_hda_intel snd_hda_codec irqbypass ppdev snd_hda_core snd_hwdep snd_seq snd_seq_device snd_pcm bochs_drm ttm joydev drm_kms_helper virtio_balloon snd_timer snd parport_pc drm soundcore parport i2c_piix4 nls_utf8 isofs squashfs zstd_decompress xxhash 8021q garp mrp stp llc virtio_net
[   30.115605]  virtio_console virtio_scsi crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel serio_raw virtio_pci virtio_ring virtio ata_generic pata_acpi qemu_fw_cfg sunrpc scsi_transport_iscsi loop
[   30.117425] CPU: 0 PID: 1347 Comm: gnome-shell Not tainted 4.15.0-0.rc0.git6.1.fc28.x86_64 #1
[   30.118141] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-2.fc27 04/01/2014
[   30.118866] task: ffff923a77e03380 task.stack: ffffa78182228000
[   30.119366] RIP: 0010:__alloc_pages_nodemask+0x35e/0x430
[   30.119810] RSP: 0000:ffffa7818222bba8 EFLAGS: 00010202
[   30.120250] RAX: 0000000000000001 RBX: 00000000014382c6 RCX: 0000000000000006
[   30.120840] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000000000000000
[   30.121443] RBP: ffff923a760d6000 R08: 0000000000000000 R09: 0000000000000006
[   30.122039] R10: 0000000000000040 R11: 0000000000000300 R12: ffff923a729273c0
[   30.122629] R13: 0000000000000000 R14: 0000000000000000 R15: ffff923a7483d400
[   30.123223] FS:  00007fe48da7dac0(0000) GS:ffff923a7cc00000(0000) knlGS:0000000000000000
[   30.123896] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   30.124373] CR2: 00007fe457b73000 CR3: 0000000078313000 CR4: 00000000000006f0
[   30.124968] Call Trace:
[   30.125186]  ttm_pool_populate+0x19b/0x400 [ttm]
[   30.125578]  ttm_bo_vm_fault+0x325/0x570 [ttm]
[   30.125964]  __do_fault+0x19/0x11e
[   30.126255]  __handle_mm_fault+0xcd3/0x1260
[   30.126609]  handle_mm_fault+0x14c/0x310
[   30.126947]  __do_page_fault+0x28c/0x530
[   30.127282]  do_page_fault+0x32/0x270
[   30.127593]  async_page_fault+0x22/0x30
[   30.127922] RIP: 0033:0x7fe48aae39a8
[   30.128225] RSP: 002b:00007ffc21c4d928 EFLAGS: 00010206
[   30.128664] RAX: 00007fe457b73000 RBX: 000055cd4c1041a0 RCX: 00007fe457b73040
[   30.129259] RDX: 0000000000300000 RSI: 0000000000000000 RDI: 00007fe457b73000
[   30.129855] RBP: 0000000000000300 R08: 000000000000000c R09: 0000000100000000
[   30.130457] R10: 0000000000000001 R11: 0000000000000246 R12: 000055cd4c1041a0
[   30.131054] R13: 000055cd4bdfe990 R14: 000055cd4c104110 R15: 0000000000000400
[   30.131648] Code: 11 01 00 0f 84 a9 00 00 00 65 ff 0d 6d cc dd 44 e9 0f ff ff ff 40 80 cd 80 e9 99 fe ff ff 48 89 c7 e8 e7 f6 01 00 e9 b7 fe ff ff <0f> 0b 0f ff e9 40 fd ff ff 65 48 8b 04 25 80 d5 00 00 8b 40 4c
[   30.133245] RIP: __alloc_pages_nodemask+0x35e/0x430 RSP: ffffa7818222bba8
[   30.133836] ---[ end trace d4f1deb60784f40a ]---

v2: handle free path as well.

Reported-by: Laura Abbott <labbott@redhat.com>
Reported-by: Adam Williamson <awilliam@redhat.com>
Fixes: 0284f1ead8 (drm/ttm: add transparent huge page support for cached allocations v2)
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
 2017-11-24 11:32:05 +10:00
Michel Dänzer
767601d100 drm/ttm: Downgrade pr_err to pr_debug for memory allocation failures 
Memory allocation failure should generally be handled gracefully by
callers. In particular, with transparent hugepage support, attempts
to allocate huge pages can fail under memory pressure, but the callers
fall back to allocating individual pages instead. In that case, there
would be spurious

 [TTM] Unable to get page %u

error messages in dmesg.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-11-04 09:48:28 -04:00
Christian König
5c42c64f7d drm/ttm: fix the fix for huge compound pages 
We don't use compound pages at the moment. Take this into account when
freeing them.

Signed-off-by: Christian König <christian.koenig@amd.comd>
Reviewed-and-Tested-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-10-19 15:27:10 -04:00
Tom St Denis
7d0a42823b drm/ttm: Fix unused variables with huge page support 
Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-10-19 15:27:06 -04:00
Christian König
6ed4e2e673 drm/ttm: add transparent huge page support for wc or uc allocations v2 
Add a new huge page pool and try to allocate from it when it makes sense.

v2: avoid compound pages for now

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-10-19 15:27:02 -04:00
Christian König
8593e9b85e drm/ttm: move more logic into ttm_page_pool_get_pages 
Make it easier to add huge page pool.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-10-19 15:27:02 -04:00
Christian König
0284f1ead8 drm/ttm: add transparent huge page support for cached allocations v2 
Try to allocate huge pages when it makes sense.

v2: avoid compound pages for now

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-10-19 15:27:01 -04:00
Christian König
6056a1a565 drm/ttm: DMA map/unmap consecutive pages as a whole v2 
Instead of mapping them bit by bit map/unmap all consecutive
pages as in one call.

v2: test for consecutive pages instead of using compound page order.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-10-09 16:30:17 -04:00
Christian König
c6e839a3e2 drm/ttm: allocate/free multiple pages in a single call 
Totally surprisingly this is more efficient than doing it page by page.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-10-09 16:30:17 -04:00
Christian König
d188bfa553 drm/ttm: add support for different pool sizes 
Correctly handle different page sizes in the memory accounting.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-10-06 17:44:16 -04:00
Christian König
f9ebec52b5 drm/ttm: remove unsued options from ttm_mem_global_alloc_page 
Nobody is actually using that, remove it.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-10-06 17:44:14 -04:00
Tom St Denis
7a9667ae19 drm/ttm: Fix configuration error around populate_and_map() functions 
Fixed kbuild errors when IOMMU/SWIOTLB are disabled.

Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 2017-09-12 14:22:55 -04:00