From: Matthew Auld matthew.auld@intel.com
We need to support vm->min_alignment > 4K, depending on the vm itself and the type of object we are inserting. With this in mind update the GTT selftests to take this into account.
Signed-off-by: Matthew Auld matthew.auld@intel.com Signed-off-by: Ramalingam C ramalingam.c@intel.com --- drivers/gpu/drm/i915/selftests/i915_gem_gtt.c | 96 ++++++++++++------- 1 file changed, 63 insertions(+), 33 deletions(-)
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c index 46f4236039a9..fdb4bf88293b 100644 --- a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c @@ -237,6 +237,8 @@ static int lowlevel_hole(struct i915_address_space *vm, u64 hole_start, u64 hole_end, unsigned long end_time) { + const unsigned int min_alignment = + i915_vm_min_alignment(vm, INTEL_MEMORY_SYSTEM); I915_RND_STATE(seed_prng); struct i915_vma *mock_vma; unsigned int size; @@ -250,9 +252,10 @@ static int lowlevel_hole(struct i915_address_space *vm, I915_RND_SUBSTATE(prng, seed_prng); struct drm_i915_gem_object *obj; unsigned int *order, count, n; - u64 hole_size; + u64 hole_size, aligned_size;
- hole_size = (hole_end - hole_start) >> size; + aligned_size = max_t(u32, ilog2(min_alignment), size); + hole_size = (hole_end - hole_start) >> aligned_size; if (hole_size > KMALLOC_MAX_SIZE / sizeof(u32)) hole_size = KMALLOC_MAX_SIZE / sizeof(u32); count = hole_size >> 1; @@ -273,8 +276,8 @@ static int lowlevel_hole(struct i915_address_space *vm, } GEM_BUG_ON(!order);
- GEM_BUG_ON(count * BIT_ULL(size) > vm->total); - GEM_BUG_ON(hole_start + count * BIT_ULL(size) > hole_end); + GEM_BUG_ON(count * BIT_ULL(aligned_size) > vm->total); + GEM_BUG_ON(hole_start + count * BIT_ULL(aligned_size) > hole_end);
/* Ignore allocation failures (i.e. don't report them as * a test failure) as we are purposefully allocating very @@ -297,10 +300,10 @@ static int lowlevel_hole(struct i915_address_space *vm, }
for (n = 0; n < count; n++) { - u64 addr = hole_start + order[n] * BIT_ULL(size); + u64 addr = hole_start + order[n] * BIT_ULL(aligned_size); intel_wakeref_t wakeref;
- GEM_BUG_ON(addr + BIT_ULL(size) > vm->total); + GEM_BUG_ON(addr + BIT_ULL(aligned_size) > vm->total);
if (igt_timeout(end_time, "%s timed out before %d/%d\n", @@ -343,7 +346,7 @@ static int lowlevel_hole(struct i915_address_space *vm, }
mock_vma->pages = obj->mm.pages; - mock_vma->node.size = BIT_ULL(size); + mock_vma->node.size = BIT_ULL(aligned_size); mock_vma->node.start = addr;
with_intel_runtime_pm(vm->gt->uncore->rpm, wakeref) @@ -354,7 +357,7 @@ static int lowlevel_hole(struct i915_address_space *vm,
i915_random_reorder(order, count, &prng); for (n = 0; n < count; n++) { - u64 addr = hole_start + order[n] * BIT_ULL(size); + u64 addr = hole_start + order[n] * BIT_ULL(aligned_size); intel_wakeref_t wakeref;
GEM_BUG_ON(addr + BIT_ULL(size) > vm->total); @@ -398,8 +401,10 @@ static int fill_hole(struct i915_address_space *vm, { const u64 hole_size = hole_end - hole_start; struct drm_i915_gem_object *obj; + const unsigned int min_alignment = + i915_vm_min_alignment(vm, INTEL_MEMORY_SYSTEM); const unsigned long max_pages = - min_t(u64, ULONG_MAX - 1, hole_size/2 >> PAGE_SHIFT); + min_t(u64, ULONG_MAX - 1, (hole_size / 2) >> ilog2(min_alignment)); const unsigned long max_step = max(int_sqrt(max_pages), 2UL); unsigned long npages, prime, flags; struct i915_vma *vma; @@ -440,14 +445,17 @@ static int fill_hole(struct i915_address_space *vm,
offset = p->offset; list_for_each_entry(obj, &objects, st_link) { + u64 aligned_size = round_up(obj->base.size, + min_alignment); + vma = i915_vma_instance(obj, vm, NULL); if (IS_ERR(vma)) continue;
if (p->step < 0) { - if (offset < hole_start + obj->base.size) + if (offset < hole_start + aligned_size) break; - offset -= obj->base.size; + offset -= aligned_size; }
err = i915_vma_pin(vma, 0, 0, offset | flags); @@ -469,22 +477,25 @@ static int fill_hole(struct i915_address_space *vm, i915_vma_unpin(vma);
if (p->step > 0) { - if (offset + obj->base.size > hole_end) + if (offset + aligned_size > hole_end) break; - offset += obj->base.size; + offset += aligned_size; } }
offset = p->offset; list_for_each_entry(obj, &objects, st_link) { + u64 aligned_size = round_up(obj->base.size, + min_alignment); + vma = i915_vma_instance(obj, vm, NULL); if (IS_ERR(vma)) continue;
if (p->step < 0) { - if (offset < hole_start + obj->base.size) + if (offset < hole_start + aligned_size) break; - offset -= obj->base.size; + offset -= aligned_size; }
if (!drm_mm_node_allocated(&vma->node) || @@ -505,22 +516,25 @@ static int fill_hole(struct i915_address_space *vm, }
if (p->step > 0) { - if (offset + obj->base.size > hole_end) + if (offset + aligned_size > hole_end) break; - offset += obj->base.size; + offset += aligned_size; } }
offset = p->offset; list_for_each_entry_reverse(obj, &objects, st_link) { + u64 aligned_size = round_up(obj->base.size, + min_alignment); + vma = i915_vma_instance(obj, vm, NULL); if (IS_ERR(vma)) continue;
if (p->step < 0) { - if (offset < hole_start + obj->base.size) + if (offset < hole_start + aligned_size) break; - offset -= obj->base.size; + offset -= aligned_size; }
err = i915_vma_pin(vma, 0, 0, offset | flags); @@ -542,22 +556,25 @@ static int fill_hole(struct i915_address_space *vm, i915_vma_unpin(vma);
if (p->step > 0) { - if (offset + obj->base.size > hole_end) + if (offset + aligned_size > hole_end) break; - offset += obj->base.size; + offset += aligned_size; } }
offset = p->offset; list_for_each_entry_reverse(obj, &objects, st_link) { + u64 aligned_size = round_up(obj->base.size, + min_alignment); + vma = i915_vma_instance(obj, vm, NULL); if (IS_ERR(vma)) continue;
if (p->step < 0) { - if (offset < hole_start + obj->base.size) + if (offset < hole_start + aligned_size) break; - offset -= obj->base.size; + offset -= aligned_size; }
if (!drm_mm_node_allocated(&vma->node) || @@ -578,9 +595,9 @@ static int fill_hole(struct i915_address_space *vm, }
if (p->step > 0) { - if (offset + obj->base.size > hole_end) + if (offset + aligned_size > hole_end) break; - offset += obj->base.size; + offset += aligned_size; } } } @@ -610,6 +627,7 @@ static int walk_hole(struct i915_address_space *vm, const u64 hole_size = hole_end - hole_start; const unsigned long max_pages = min_t(u64, ULONG_MAX - 1, hole_size >> PAGE_SHIFT); + unsigned long min_alignment; unsigned long flags; u64 size;
@@ -619,6 +637,8 @@ static int walk_hole(struct i915_address_space *vm, if (i915_is_ggtt(vm)) flags |= PIN_GLOBAL;
+ min_alignment = i915_vm_min_alignment(vm, INTEL_MEMORY_SYSTEM); + for_each_prime_number_from(size, 1, max_pages) { struct drm_i915_gem_object *obj; struct i915_vma *vma; @@ -637,7 +657,7 @@ static int walk_hole(struct i915_address_space *vm,
for (addr = hole_start; addr + obj->base.size < hole_end; - addr += obj->base.size) { + addr += round_up(obj->base.size, min_alignment)) { err = i915_vma_pin(vma, 0, 0, addr | flags); if (err) { pr_err("%s bind failed at %llx + %llx [hole %llx- %llx] with err=%d\n", @@ -689,6 +709,7 @@ static int pot_hole(struct i915_address_space *vm, { struct drm_i915_gem_object *obj; struct i915_vma *vma; + unsigned int min_alignment; unsigned long flags; unsigned int pot; int err = 0; @@ -697,6 +718,8 @@ static int pot_hole(struct i915_address_space *vm, if (i915_is_ggtt(vm)) flags |= PIN_GLOBAL;
+ min_alignment = i915_vm_min_alignment(vm, INTEL_MEMORY_SYSTEM); + obj = i915_gem_object_create_internal(vm->i915, 2 * I915_GTT_PAGE_SIZE); if (IS_ERR(obj)) return PTR_ERR(obj); @@ -709,13 +732,13 @@ static int pot_hole(struct i915_address_space *vm,
/* Insert a pair of pages across every pot boundary within the hole */ for (pot = fls64(hole_end - 1) - 1; - pot > ilog2(2 * I915_GTT_PAGE_SIZE); + pot > ilog2(2 * min_alignment); pot--) { u64 step = BIT_ULL(pot); u64 addr;
- for (addr = round_up(hole_start + I915_GTT_PAGE_SIZE, step) - I915_GTT_PAGE_SIZE; - addr <= round_down(hole_end - 2*I915_GTT_PAGE_SIZE, step) - I915_GTT_PAGE_SIZE; + for (addr = round_up(hole_start + min_alignment, step) - min_alignment; + addr <= round_down(hole_end - (2 * min_alignment), step) - min_alignment; addr += step) { err = i915_vma_pin(vma, 0, 0, addr | flags); if (err) { @@ -760,6 +783,7 @@ static int drunk_hole(struct i915_address_space *vm, unsigned long end_time) { I915_RND_STATE(prng); + unsigned int min_alignment; unsigned int size; unsigned long flags;
@@ -767,15 +791,18 @@ static int drunk_hole(struct i915_address_space *vm, if (i915_is_ggtt(vm)) flags |= PIN_GLOBAL;
+ min_alignment = i915_vm_min_alignment(vm, INTEL_MEMORY_SYSTEM); + /* Keep creating larger objects until one cannot fit into the hole */ for (size = 12; (hole_end - hole_start) >> size; size++) { struct drm_i915_gem_object *obj; unsigned int *order, count, n; struct i915_vma *vma; - u64 hole_size; + u64 hole_size, aligned_size; int err = -ENODEV;
- hole_size = (hole_end - hole_start) >> size; + aligned_size = max_t(u32, ilog2(min_alignment), size); + hole_size = (hole_end - hole_start) >> aligned_size; if (hole_size > KMALLOC_MAX_SIZE / sizeof(u32)) hole_size = KMALLOC_MAX_SIZE / sizeof(u32); count = hole_size >> 1; @@ -815,7 +842,7 @@ static int drunk_hole(struct i915_address_space *vm, GEM_BUG_ON(vma->size != BIT_ULL(size));
for (n = 0; n < count; n++) { - u64 addr = hole_start + order[n] * BIT_ULL(size); + u64 addr = hole_start + order[n] * BIT_ULL(aligned_size);
err = i915_vma_pin(vma, 0, 0, addr | flags); if (err) { @@ -867,11 +894,14 @@ static int __shrink_hole(struct i915_address_space *vm, { struct drm_i915_gem_object *obj; unsigned long flags = PIN_OFFSET_FIXED | PIN_USER; + unsigned int min_alignment; unsigned int order = 12; LIST_HEAD(objects); int err = 0; u64 addr;
+ min_alignment = i915_vm_min_alignment(vm, INTEL_MEMORY_SYSTEM); + /* Keep creating larger objects until one cannot fit into the hole */ for (addr = hole_start; addr < hole_end; ) { struct i915_vma *vma; @@ -912,7 +942,7 @@ static int __shrink_hole(struct i915_address_space *vm, }
i915_vma_unpin(vma); - addr += size; + addr += round_up(size, min_alignment);
/* * Since we are injecting allocation faults at random intervals,