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| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2019-08-21 13:32:34 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-08-21 14:07:54 +0100 |
| commit | 6846895fde05558a39ffcee7631a802a923d9b16 (patch) | |
| tree | 1e0540db40effef4ea0e18750f07622b46f3dd2e /drivers/gpu/drm/i915/i915_gem_gtt.h | |
| parent | drm/i915/gtt: Include asm/smp.h (diff) | |
| download | linux-dev-6846895fde05558a39ffcee7631a802a923d9b16.tar.xz linux-dev-6846895fde05558a39ffcee7631a802a923d9b16.zip | |
drm/i915: Replace PIN_NONFAULT with calls to PIN_NOEVICT
When under severe stress for GTT mappable space, the LRU eviction model
falls off a cliff. We spend all our time scanning the much larger
non-mappable area searching for something within the mappable zone we can
evict. Turn this on its head by only using the full vma for the object if
it is already pinned in the mappable zone or there is sufficient *free*
space to accommodate it (prioritizing speedy reuse). If there is not,
immediately fall back to using small chunks (tilerow for GTT mmap, single
pages for pwrite/relocation) and using random eviction before doing a full
search.
Testcase: igt/gem_concurrent_blt
References: https://bugs.freedesktop.org/show_bug.cgi?id=110848
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190821123234.19194-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_gtt.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_gtt.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h index 51274483502e..b97a47fc7a68 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.h +++ b/drivers/gpu/drm/i915/i915_gem_gtt.h @@ -600,9 +600,9 @@ int i915_gem_gtt_insert(struct i915_address_space *vm, u64 start, u64 end, unsigned int flags); /* Flags used by pin/bind&friends. */ -#define PIN_NONBLOCK BIT_ULL(0) -#define PIN_NONFAULT BIT_ULL(1) -#define PIN_NOEVICT BIT_ULL(2) +#define PIN_NOEVICT BIT_ULL(0) +#define PIN_NOSEARCH BIT_ULL(1) +#define PIN_NONBLOCK BIT_ULL(2) #define PIN_MAPPABLE BIT_ULL(3) #define PIN_ZONE_4G BIT_ULL(4) #define PIN_HIGH BIT_ULL(5) |