Add shared stats.  Useful for seeing shared memory.

v2: take dma-buf into account as well

Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Cc: Rob Clark <robdcl...@gmail.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_fdinfo.c |  4 ++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 11 +++++++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_object.h |  6 ++++++
 3 files changed, 21 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fdinfo.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_fdinfo.c
index 5706b282a0c7..c7df7fa3459f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fdinfo.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fdinfo.c
@@ -97,6 +97,10 @@ void amdgpu_show_fdinfo(struct drm_printer *p, struct 
drm_file *file)
                   stats.requested_visible_vram/1024UL);
        drm_printf(p, "amd-requested-gtt:\t%llu KiB\n",
                   stats.requested_gtt/1024UL);
+       drm_printf(p, "drm-shared-vram:\t%llu KiB\n", stats.vram_shared/1024UL);
+       drm_printf(p, "drm-shared-gtt:\t%llu KiB\n", stats.gtt_shared/1024UL);
+       drm_printf(p, "drm-shared-cpu:\t%llu KiB\n", stats.cpu_shared/1024UL);
+
        for (hw_ip = 0; hw_ip < AMDGPU_HW_IP_NUM; ++hw_ip) {
                if (!usage[hw_ip])
                        continue;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index d79b4ca1ecfc..1b37d95475b8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -1287,25 +1287,36 @@ void amdgpu_bo_get_memory(struct amdgpu_bo *bo,
                          struct amdgpu_mem_stats *stats)
 {
        uint64_t size = amdgpu_bo_size(bo);
+       struct drm_gem_object *obj;
        unsigned int domain;
+       bool shared;
 
        /* Abort if the BO doesn't currently have a backing store */
        if (!bo->tbo.resource)
                return;
 
+       obj = &bo->tbo.base;
+       shared = (obj->handle_count > 1) || obj->dma_buf;
+
        domain = amdgpu_mem_type_to_domain(bo->tbo.resource->mem_type);
        switch (domain) {
        case AMDGPU_GEM_DOMAIN_VRAM:
                stats->vram += size;
                if (amdgpu_bo_in_cpu_visible_vram(bo))
                        stats->visible_vram += size;
+               if (shared)
+                       stats->vram_shared += size;
                break;
        case AMDGPU_GEM_DOMAIN_GTT:
                stats->gtt += size;
+               if (shared)
+                       stats->gtt_shared += size;
                break;
        case AMDGPU_GEM_DOMAIN_CPU:
        default:
                stats->cpu += size;
+               if (shared)
+                       stats->cpu_shared += size;
                break;
        }
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
index d28e21baef16..0503af75dc26 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
@@ -138,12 +138,18 @@ struct amdgpu_bo_vm {
 struct amdgpu_mem_stats {
        /* current VRAM usage, includes visible VRAM */
        uint64_t vram;
+       /* current shared VRAM usage, includes visible VRAM */
+       uint64_t vram_shared;
        /* current visible VRAM usage */
        uint64_t visible_vram;
        /* current GTT usage */
        uint64_t gtt;
+       /* current shared GTT usage */
+       uint64_t gtt_shared;
        /* current system memory usage */
        uint64_t cpu;
+       /* current shared system memory usage */
+       uint64_t cpu_shared;
        /* sum of evicted buffers, includes visible VRAM */
        uint64_t evicted_vram;
        /* sum of evicted buffers due to CPU access */
-- 
2.42.0

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