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drm/i915: Make object/vma allocation caches global

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As our allocations are not device specific, we can move our slab caches
to a global scope.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190228102035.5857-2-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson
2019-02-28 10:20:34 +00:00
parent 32eb6bcfdd
commit 13f1bfd3b3
20 changed files with 170 additions and 86 deletions
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43
drivers/gpu/drm/i915/i915_vma.c
View File

@@ -30,6 +30,20 @@
#include <drm/drm_gem.h>
static struct i915_global_vma {
struct kmem_cache *slab_vmas;
} global;
struct i915_vma *i915_vma_alloc(void)
{
return kmem_cache_zalloc(global.slab_vmas, GFP_KERNEL);
}
void i915_vma_free(struct i915_vma *vma)
{
return kmem_cache_free(global.slab_vmas, vma);
}
#if IS_ENABLED(CONFIG_DRM_I915_ERRLOG_GEM) && IS_ENABLED(CONFIG_DRM_DEBUG_MM)
#include <linux/stackdepot.h>
@@ -115,7 +129,7 @@ vma_create(struct drm_i915_gem_object *obj,
/* The aliasing_ppgtt should never be used directly! */
GEM_BUG_ON(vm == &vm->i915->mm.aliasing_ppgtt->vm);
vma = kmem_cache_zalloc(vm->i915->vmas, GFP_KERNEL);
vma = i915_vma_alloc();
if (vma == NULL)
return ERR_PTR(-ENOMEM);
@@ -190,7 +204,7 @@ vma_create(struct drm_i915_gem_object *obj,
cmp = i915_vma_compare(pos, vm, view);
if (cmp == 0) {
spin_unlock(&obj->vma.lock);
kmem_cache_free(vm->i915->vmas, vma);
i915_vma_free(vma);
return pos;
}
@@ -222,7 +236,7 @@ vma_create(struct drm_i915_gem_object *obj,
return vma;
err_vma:
kmem_cache_free(vm->i915->vmas, vma);
i915_vma_free(vma);
return ERR_PTR(-E2BIG);
}
@@ -803,8 +817,6 @@ void i915_vma_reopen(struct i915_vma *vma)
static void __i915_vma_destroy(struct i915_vma *vma)
{
struct drm_i915_private *i915 = vma->vm->i915;
GEM_BUG_ON(vma->node.allocated);
GEM_BUG_ON(vma->fence);
@@ -825,7 +837,7 @@ static void __i915_vma_destroy(struct i915_vma *vma)
i915_active_fini(&vma->active);
kmem_cache_free(i915->vmas, vma);
i915_vma_free(vma);
}
void i915_vma_destroy(struct i915_vma *vma)
@@ -1041,3 +1053,22 @@ unpin:
#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
#include "selftests/i915_vma.c"
#endif
int __init i915_global_vma_init(void)
{
global.slab_vmas = KMEM_CACHE(i915_vma, SLAB_HWCACHE_ALIGN);
if (!global.slab_vmas)
return -ENOMEM;
return 0;
}
void i915_global_vma_shrink(void)
{
kmem_cache_shrink(global.slab_vmas);
}
void i915_global_vma_exit(void)
{
kmem_cache_destroy(global.slab_vmas);
}