[PATCH 25/29] drm/amdkfd: Fix memory reporting on GFX 9.4.3
Alex Deucher
alexander.deucher at amd.com
Wed May 10 21:23:29 UTC 2023
From: Mukul Joshi <mukul.joshi at amd.com>
This patch fixes memory reporting on the GFX 9.4.3 APU and dGPU
by reporting available memory on a per partition basis. If its an
APU, available and used memory calculations take into account
system and TTM memory.
v2: squash in fix ("drm/amdkfd: Fix array out of bound warning")
squash in fix ("drm/amdgpu: Update memory reporting for GFX9.4.3")
Signed-off-by: Mukul Joshi <mukul.joshi at amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h | 12 +--
.../gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 81 ++++++++++++++-----
drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.h | 5 ++
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 3 +-
drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 14 ++--
5 files changed, 84 insertions(+), 31 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
index 4bf6f5659568..948d362adabb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
@@ -35,6 +35,7 @@
#include <drm/ttm/ttm_execbuf_util.h>
#include "amdgpu_sync.h"
#include "amdgpu_vm.h"
+#include "amdgpu_xcp.h"
extern uint64_t amdgpu_amdkfd_total_mem_size;
@@ -98,8 +99,8 @@ struct amdgpu_amdkfd_fence {
struct amdgpu_kfd_dev {
struct kfd_dev *dev;
- int64_t vram_used;
- uint64_t vram_used_aligned;
+ int64_t vram_used[MAX_XCP];
+ uint64_t vram_used_aligned[MAX_XCP];
bool init_complete;
struct work_struct reset_work;
@@ -287,7 +288,8 @@ int amdgpu_amdkfd_gpuvm_acquire_process_vm(struct amdgpu_device *adev,
void amdgpu_amdkfd_gpuvm_release_process_vm(struct amdgpu_device *adev,
void *drm_priv);
uint64_t amdgpu_amdkfd_gpuvm_get_process_page_dir(void *drm_priv);
-size_t amdgpu_amdkfd_get_available_memory(struct amdgpu_device *adev);
+size_t amdgpu_amdkfd_get_available_memory(struct amdgpu_device *adev,
+ uint8_t xcp_id);
int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
struct amdgpu_device *adev, uint64_t va, uint64_t size,
void *drm_priv, struct kgd_mem **mem,
@@ -327,9 +329,9 @@ void amdgpu_amdkfd_block_mmu_notifications(void *p);
int amdgpu_amdkfd_criu_resume(void *p);
bool amdgpu_amdkfd_ras_query_utcl2_poison_status(struct amdgpu_device *adev);
int amdgpu_amdkfd_reserve_mem_limit(struct amdgpu_device *adev,
- uint64_t size, u32 alloc_flag);
+ uint64_t size, u32 alloc_flag, int8_t xcp_id);
void amdgpu_amdkfd_unreserve_mem_limit(struct amdgpu_device *adev,
- uint64_t size, u32 alloc_flag);
+ uint64_t size, u32 alloc_flag, int8_t xcp_id);
#define KFD_XCP_MEM_ID(adev, xcp_id) \
((adev)->xcp_mgr && (xcp_id) >= 0 ?\
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index cf8f80e4ef56..fa4057da0d7f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -156,12 +156,13 @@ void amdgpu_amdkfd_reserve_system_mem(uint64_t size)
* Return: returns -ENOMEM in case of error, ZERO otherwise
*/
int amdgpu_amdkfd_reserve_mem_limit(struct amdgpu_device *adev,
- uint64_t size, u32 alloc_flag)
+ uint64_t size, u32 alloc_flag, int8_t xcp_id)
{
uint64_t reserved_for_pt =
ESTIMATE_PT_SIZE(amdgpu_amdkfd_total_mem_size);
size_t system_mem_needed, ttm_mem_needed, vram_needed;
int ret = 0;
+ uint64_t vram_size = 0;
system_mem_needed = 0;
ttm_mem_needed = 0;
@@ -176,6 +177,17 @@ int amdgpu_amdkfd_reserve_mem_limit(struct amdgpu_device *adev,
* 2M BO chunk.
*/
vram_needed = size;
+ /*
+ * For GFX 9.4.3, get the VRAM size from XCP structs
+ */
+ if (WARN_ONCE(xcp_id < 0, "invalid XCP ID %d", xcp_id))
+ return -EINVAL;
+
+ vram_size = KFD_XCP_MEMORY_SIZE(adev, xcp_id);
+ if (adev->gmc.is_app_apu) {
+ system_mem_needed = size;
+ ttm_mem_needed = size;
+ }
} else if (alloc_flag & KFD_IOC_ALLOC_MEM_FLAGS_USERPTR) {
system_mem_needed = size;
} else if (!(alloc_flag &
@@ -195,8 +207,8 @@ int amdgpu_amdkfd_reserve_mem_limit(struct amdgpu_device *adev,
kfd_mem_limit.max_system_mem_limit && !no_system_mem_limit) ||
(kfd_mem_limit.ttm_mem_used + ttm_mem_needed >
kfd_mem_limit.max_ttm_mem_limit) ||
- (adev && adev->kfd.vram_used + vram_needed >
- adev->gmc.real_vram_size - reserved_for_pt)) {
+ (adev && xcp_id >= 0 && adev->kfd.vram_used[xcp_id] + vram_needed >
+ vram_size - reserved_for_pt)) {
ret = -ENOMEM;
goto release;
}
@@ -206,9 +218,11 @@ int amdgpu_amdkfd_reserve_mem_limit(struct amdgpu_device *adev,
*/
WARN_ONCE(vram_needed && !adev,
"adev reference can't be null when vram is used");
- if (adev) {
- adev->kfd.vram_used += vram_needed;
- adev->kfd.vram_used_aligned += ALIGN(vram_needed, VRAM_AVAILABLITY_ALIGN);
+ if (adev && xcp_id >= 0) {
+ adev->kfd.vram_used[xcp_id] += vram_needed;
+ adev->kfd.vram_used_aligned[xcp_id] += adev->gmc.is_app_apu ?
+ vram_needed :
+ ALIGN(vram_needed, VRAM_AVAILABLITY_ALIGN);
}
kfd_mem_limit.system_mem_used += system_mem_needed;
kfd_mem_limit.ttm_mem_used += ttm_mem_needed;
@@ -219,7 +233,7 @@ int amdgpu_amdkfd_reserve_mem_limit(struct amdgpu_device *adev,
}
void amdgpu_amdkfd_unreserve_mem_limit(struct amdgpu_device *adev,
- uint64_t size, u32 alloc_flag)
+ uint64_t size, u32 alloc_flag, int8_t xcp_id)
{
spin_lock(&kfd_mem_limit.mem_limit_lock);
@@ -229,9 +243,19 @@ void amdgpu_amdkfd_unreserve_mem_limit(struct amdgpu_device *adev,
} else if (alloc_flag & KFD_IOC_ALLOC_MEM_FLAGS_VRAM) {
WARN_ONCE(!adev,
"adev reference can't be null when alloc mem flags vram is set");
+ if (WARN_ONCE(xcp_id < 0, "invalid XCP ID %d", xcp_id))
+ goto release;
+
if (adev) {
- adev->kfd.vram_used -= size;
- adev->kfd.vram_used_aligned -= ALIGN(size, VRAM_AVAILABLITY_ALIGN);
+ adev->kfd.vram_used[xcp_id] -= size;
+ if (adev->gmc.is_app_apu) {
+ adev->kfd.vram_used_aligned[xcp_id] -= size;
+ kfd_mem_limit.system_mem_used -= size;
+ kfd_mem_limit.ttm_mem_used -= size;
+ } else {
+ adev->kfd.vram_used_aligned[xcp_id] -=
+ ALIGN(size, VRAM_AVAILABLITY_ALIGN);
+ }
}
} else if (alloc_flag & KFD_IOC_ALLOC_MEM_FLAGS_USERPTR) {
kfd_mem_limit.system_mem_used -= size;
@@ -241,8 +265,8 @@ void amdgpu_amdkfd_unreserve_mem_limit(struct amdgpu_device *adev,
pr_err("%s: Invalid BO type %#x\n", __func__, alloc_flag);
goto release;
}
- WARN_ONCE(adev && adev->kfd.vram_used < 0,
- "KFD VRAM memory accounting unbalanced");
+ WARN_ONCE(adev && xcp_id >= 0 && adev->kfd.vram_used[xcp_id] < 0,
+ "KFD VRAM memory accounting unbalanced for xcp: %d", xcp_id);
WARN_ONCE(kfd_mem_limit.ttm_mem_used < 0,
"KFD TTM memory accounting unbalanced");
WARN_ONCE(kfd_mem_limit.system_mem_used < 0,
@@ -258,7 +282,8 @@ void amdgpu_amdkfd_release_notify(struct amdgpu_bo *bo)
u32 alloc_flags = bo->kfd_bo->alloc_flags;
u64 size = amdgpu_bo_size(bo);
- amdgpu_amdkfd_unreserve_mem_limit(adev, size, alloc_flags);
+ amdgpu_amdkfd_unreserve_mem_limit(adev, size, alloc_flags,
+ bo->xcp_id);
kfree(bo->kfd_bo);
}
@@ -1608,23 +1633,42 @@ int amdgpu_amdkfd_criu_resume(void *p)
return ret;
}
-size_t amdgpu_amdkfd_get_available_memory(struct amdgpu_device *adev)
+size_t amdgpu_amdkfd_get_available_memory(struct amdgpu_device *adev,
+ uint8_t xcp_id)
{
uint64_t reserved_for_pt =
ESTIMATE_PT_SIZE(amdgpu_amdkfd_total_mem_size);
ssize_t available;
+ uint64_t vram_available, system_mem_available, ttm_mem_available;
spin_lock(&kfd_mem_limit.mem_limit_lock);
- available = adev->gmc.real_vram_size
- - adev->kfd.vram_used_aligned
+ vram_available = KFD_XCP_MEMORY_SIZE(adev, xcp_id)
+ - adev->kfd.vram_used_aligned[xcp_id]
- atomic64_read(&adev->vram_pin_size)
- reserved_for_pt;
+
+ if (adev->gmc.is_app_apu) {
+ system_mem_available = no_system_mem_limit ?
+ kfd_mem_limit.max_system_mem_limit :
+ kfd_mem_limit.max_system_mem_limit -
+ kfd_mem_limit.system_mem_used;
+
+ ttm_mem_available = kfd_mem_limit.max_ttm_mem_limit -
+ kfd_mem_limit.ttm_mem_used;
+
+ available = min3(system_mem_available, ttm_mem_available,
+ vram_available);
+ available = ALIGN_DOWN(available, PAGE_SIZE);
+ } else {
+ available = ALIGN_DOWN(vram_available, VRAM_AVAILABLITY_ALIGN);
+ }
+
spin_unlock(&kfd_mem_limit.mem_limit_lock);
if (available < 0)
available = 0;
- return ALIGN_DOWN(available, VRAM_AVAILABLITY_ALIGN);
+ return available;
}
int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
@@ -1712,7 +1756,8 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
amdgpu_sync_create(&(*mem)->sync);
- ret = amdgpu_amdkfd_reserve_mem_limit(adev, aligned_size, flags);
+ ret = amdgpu_amdkfd_reserve_mem_limit(adev, aligned_size, flags,
+ xcp_id);
if (ret) {
pr_debug("Insufficient memory\n");
goto err_reserve_limit;
@@ -1780,7 +1825,7 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
/* Don't unreserve system mem limit twice */
goto err_reserve_limit;
err_bo_create:
- amdgpu_amdkfd_unreserve_mem_limit(adev, aligned_size, flags);
+ amdgpu_amdkfd_unreserve_mem_limit(adev, aligned_size, flags, xcp_id);
err_reserve_limit:
mutex_destroy(&(*mem)->lock);
if (gobj)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.h
index 68b63b970ce8..9c5912b9d8bd 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.h
@@ -24,8 +24,11 @@
#ifndef AMDGPU_XCP_H
#define AMDGPU_XCP_H
+#include <linux/pci.h>
#include <linux/xarray.h>
+#include "amdgpu_ctx.h"
+
#define MAX_XCP 8
#define AMDGPU_XCP_MODE_NONE -1
@@ -34,6 +37,8 @@
#define AMDGPU_XCP_FL_NONE 0
#define AMDGPU_XCP_FL_LOCKED (1 << 0)
+struct amdgpu_fpriv;
+
enum AMDGPU_XCP_IP_BLOCK {
AMDGPU_XCP_GFXHUB,
AMDGPU_XCP_GFX,
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index 089e1d498670..88fe1f31739d 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -1044,7 +1044,8 @@ static int kfd_ioctl_get_available_memory(struct file *filep,
if (!pdd)
return -EINVAL;
- args->available = amdgpu_amdkfd_get_available_memory(pdd->dev->adev);
+ args->available = amdgpu_amdkfd_get_available_memory(pdd->dev->adev,
+ pdd->dev->node_id);
kfd_unlock_pdd(pdd);
return 0;
}
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
index 872daaef0258..2dbbdad3f392 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -279,7 +279,7 @@ static void svm_range_free(struct svm_range *prange, bool update_mem_usage)
if (update_mem_usage && !p->xnack_enabled) {
pr_debug("unreserve prange 0x%p size: 0x%llx\n", prange, size);
amdgpu_amdkfd_unreserve_mem_limit(NULL, size,
- KFD_IOC_ALLOC_MEM_FLAGS_USERPTR);
+ KFD_IOC_ALLOC_MEM_FLAGS_USERPTR, 0);
}
mutex_destroy(&prange->lock);
mutex_destroy(&prange->migrate_mutex);
@@ -312,7 +312,7 @@ svm_range *svm_range_new(struct svm_range_list *svms, uint64_t start,
p = container_of(svms, struct kfd_process, svms);
if (!p->xnack_enabled && update_mem_usage &&
amdgpu_amdkfd_reserve_mem_limit(NULL, size << PAGE_SHIFT,
- KFD_IOC_ALLOC_MEM_FLAGS_USERPTR)) {
+ KFD_IOC_ALLOC_MEM_FLAGS_USERPTR, 0)) {
pr_info("SVM mapping failed, exceeds resident system memory limit\n");
kfree(prange);
return NULL;
@@ -3036,10 +3036,10 @@ svm_range_switch_xnack_reserve_mem(struct kfd_process *p, bool xnack_enabled)
size = (pchild->last - pchild->start + 1) << PAGE_SHIFT;
if (xnack_enabled) {
amdgpu_amdkfd_unreserve_mem_limit(NULL, size,
- KFD_IOC_ALLOC_MEM_FLAGS_USERPTR);
+ KFD_IOC_ALLOC_MEM_FLAGS_USERPTR, 0);
} else {
r = amdgpu_amdkfd_reserve_mem_limit(NULL, size,
- KFD_IOC_ALLOC_MEM_FLAGS_USERPTR);
+ KFD_IOC_ALLOC_MEM_FLAGS_USERPTR, 0);
if (r)
goto out_unlock;
reserved_size += size;
@@ -3049,10 +3049,10 @@ svm_range_switch_xnack_reserve_mem(struct kfd_process *p, bool xnack_enabled)
size = (prange->last - prange->start + 1) << PAGE_SHIFT;
if (xnack_enabled) {
amdgpu_amdkfd_unreserve_mem_limit(NULL, size,
- KFD_IOC_ALLOC_MEM_FLAGS_USERPTR);
+ KFD_IOC_ALLOC_MEM_FLAGS_USERPTR, 0);
} else {
r = amdgpu_amdkfd_reserve_mem_limit(NULL, size,
- KFD_IOC_ALLOC_MEM_FLAGS_USERPTR);
+ KFD_IOC_ALLOC_MEM_FLAGS_USERPTR, 0);
if (r)
goto out_unlock;
reserved_size += size;
@@ -3065,7 +3065,7 @@ svm_range_switch_xnack_reserve_mem(struct kfd_process *p, bool xnack_enabled)
if (r)
amdgpu_amdkfd_unreserve_mem_limit(NULL, reserved_size,
- KFD_IOC_ALLOC_MEM_FLAGS_USERPTR);
+ KFD_IOC_ALLOC_MEM_FLAGS_USERPTR, 0);
else
/* Change xnack mode must be inside svms lock, to avoid race with
* svm_range_deferred_list_work unreserve memory in parallel.
--
2.40.1
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