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drm/amdgpu: Move fault hash table to amdgpu vm

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In stead of share one fault hash table per device, make it
per vm. This can avoid inter-process lock issue when fault
hash table is full.

Change-Id: I5d1281b7c41eddc8e26113e010516557588d3708
Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Suggested-by: Christian Konig <Christian.Koenig@amd.com>
Suggested-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian Konig <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Oak Zeng
2018-09-05 23:51:23 -04:00
committed by Alex Deucher
parent 7e7bf8de43
commit 240cd9a642
5 changed files with 128 additions and 111 deletions
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13
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
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@@ -30,6 +30,7 @@
#include <drm/gpu_scheduler.h>
#include <drm/drm_file.h>
#include <drm/ttm/ttm_bo_driver.h>
#include <linux/chash.h>
#include "amdgpu_sync.h"
#include "amdgpu_ring.h"
@@ -178,6 +179,13 @@ struct amdgpu_task_info {
pid_t tgid;
};
#define AMDGPU_PAGEFAULT_HASH_BITS 8
struct amdgpu_retryfault_hashtable {
DECLARE_CHASH_TABLE(hash, AMDGPU_PAGEFAULT_HASH_BITS, 8, 0);
spinlock_t lock;
int count;
};
struct amdgpu_vm {
/* tree of virtual addresses mapped */
struct rb_root_cached va;
@@ -240,6 +248,7 @@ struct amdgpu_vm {
struct ttm_lru_bulk_move lru_bulk_move;
/* mark whether can do the bulk move */
bool bulk_moveable;
struct amdgpu_retryfault_hashtable *fault_hash;
};
struct amdgpu_vm_manager {
@@ -355,4 +364,8 @@ void amdgpu_vm_set_task_info(struct amdgpu_vm *vm);
void amdgpu_vm_move_to_lru_tail(struct amdgpu_device *adev,
struct amdgpu_vm *vm);
int amdgpu_vm_add_fault(struct amdgpu_retryfault_hashtable *fault_hash, u64 key);
void amdgpu_vm_clear_fault(struct amdgpu_retryfault_hashtable *fault_hash, u64 key);
#endif