From: =?UTF-8?q?Marek=20Ol=C5=A1=C3=A1k?= <marek.olsak@amd.com>
Date: Wed, 17 May 2017 20:05:08 +0200
Subject: drm/amdgpu: add an INFO query for monitoring VRAM CPU page faults
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Git-commit: 68e2c5ffeb164f069692d00659d24dbda31178bc
Patch-mainline: v4.13-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
v2: bump the DRM version
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 +
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 3 ++-
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 3 +++
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 1 +
include/uapi/drm/amdgpu_drm.h | 2 ++
5 files changed, 9 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1529,6 +1529,7 @@ struct amdgpu_device {
atomic64_t gtt_usage;
atomic64_t num_bytes_moved;
atomic64_t num_evictions;
+ atomic64_t num_vram_cpu_page_faults;
atomic_t gpu_reset_counter;
atomic_t vram_lost_counter;
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -66,9 +66,10 @@
* - 3.14.0 - Fix race in amdgpu_ctx_get_fence() and note new functionality
* - 3.15.0 - Export more gpu info for gfx9
* - 3.16.0 - Add reserved vmid support
+ * - 3.17.0 - Add AMDGPU_NUM_VRAM_CPU_PAGE_FAULTS.
*/
#define KMS_DRIVER_MAJOR 3
-#define KMS_DRIVER_MINOR 16
+#define KMS_DRIVER_MINOR 17
#define KMS_DRIVER_PATCHLEVEL 0
int amdgpu_vram_limit = 0;
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -417,6 +417,9 @@ static int amdgpu_info_ioctl(struct drm_
case AMDGPU_INFO_NUM_EVICTIONS:
ui64 = atomic64_read(&adev->num_evictions);
return copy_to_user(out, &ui64, min(size, 8u)) ? -EFAULT : 0;
+ case AMDGPU_INFO_NUM_VRAM_CPU_PAGE_FAULTS:
+ ui64 = atomic64_read(&adev->num_vram_cpu_page_faults);
+ return copy_to_user(out, &ui64, min(size, 8u)) ? -EFAULT : 0;
case AMDGPU_INFO_VRAM_USAGE:
ui64 = atomic64_read(&adev->vram_usage);
return copy_to_user(out, &ui64, min(size, 8u)) ? -EFAULT : 0;
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -960,6 +960,7 @@ int amdgpu_bo_fault_reserve_notify(struc
return -EINVAL;
/* hurrah the memory is not visible ! */
+ atomic64_inc(&adev->num_vram_cpu_page_faults);
amdgpu_ttm_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_VRAM);
lpfn = adev->mc.visible_vram_size >> PAGE_SHIFT;
for (i = 0; i < abo->placement.num_placement; i++) {
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -603,6 +603,8 @@ struct drm_amdgpu_cs_chunk_data {
#define AMDGPU_INFO_SENSOR_VDDNB 0x6
/* Subquery id: Query graphics voltage */
#define AMDGPU_INFO_SENSOR_VDDGFX 0x7
+/* Number of VRAM page faults on CPU access. */
+#define AMDGPU_INFO_NUM_VRAM_CPU_PAGE_FAULTS 0x1E
#define AMDGPU_INFO_MMR_SE_INDEX_SHIFT 0
#define AMDGPU_INFO_MMR_SE_INDEX_MASK 0xff