accel/ivpu: Add fdinfo support for memory statistics

Implement DRM fdinfo interface to expose memory usage statistics
for NPU device file descriptors. Exclude unpinned and imported
buffers from resident memory calculations to provide accurate
memory usage reporting.

Reviewed-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com>
Signed-off-by: Karol Wachowski <karol.wachowski@linux.intel.com>
Link: https://patch.msgid.link/20251106101052.1050348-2-karol.wachowski@linux.intel.com

diff --git a/drivers/accel/ivpu/ivpu_drv.c b/drivers/accel/ivpu/ivpu_drv.c
index b305effcf003a7d985b6f47179396c2d73ede4d4..ce7dbd47305997b1f7cd7cd9bbb81039b644edc0 100644 (file)
--- a/drivers/accel/ivpu/ivpu_drv.c
+++ b/drivers/accel/ivpu/ivpu_drv.c
@@ -455,6 +455,9 @@ int ivpu_shutdown(struct ivpu_device *vdev)
 static const struct file_operations ivpu_fops = {
        .owner          = THIS_MODULE,
        DRM_ACCEL_FOPS,
+#if CONFIG_PROC_FS
+       .show_fdinfo = drm_show_fdinfo,
+#endif
 };
 
 static const struct drm_driver driver = {
@@ -469,6 +472,9 @@ static const struct drm_driver driver = {
        .ioctls = ivpu_drm_ioctls,
        .num_ioctls = ARRAY_SIZE(ivpu_drm_ioctls),
        .fops = &ivpu_fops,
+#if CONFIG_PROC_FS
+       .show_fdinfo = drm_show_memory_stats,
+#endif
 
        .name = DRIVER_NAME,
        .desc = DRIVER_DESC,

diff --git a/drivers/accel/ivpu/ivpu_gem.c b/drivers/accel/ivpu/ivpu_gem.c
index 74b12c7e6caf36a9b694925f9343891f64df818e..ece68f570b7eadcbcae2ecfd0eb876a888977407 100644 (file)
--- a/drivers/accel/ivpu/ivpu_gem.c
+++ b/drivers/accel/ivpu/ivpu_gem.c
@@ -333,6 +333,17 @@ static void ivpu_gem_bo_free(struct drm_gem_object *obj)
        drm_gem_shmem_free(&bo->base);
 }
 
+static enum drm_gem_object_status ivpu_gem_status(struct drm_gem_object *obj)
+{
+       struct ivpu_bo *bo = to_ivpu_bo(obj);
+       enum drm_gem_object_status status = 0;
+
+       if (ivpu_bo_is_resident(bo))
+               status |= DRM_GEM_OBJECT_RESIDENT;
+
+       return status;
+}
+
 static const struct drm_gem_object_funcs ivpu_gem_funcs = {
        .free = ivpu_gem_bo_free,
        .open = ivpu_gem_bo_open,
@@ -343,6 +354,7 @@ static const struct drm_gem_object_funcs ivpu_gem_funcs = {
        .vmap = drm_gem_shmem_object_vmap,
        .vunmap = drm_gem_shmem_object_vunmap,
        .mmap = drm_gem_shmem_object_mmap,
+       .status = ivpu_gem_status,
        .vm_ops = &drm_gem_shmem_vm_ops,
 };
 

diff --git a/drivers/accel/ivpu/ivpu_gem.h b/drivers/accel/ivpu/ivpu_gem.h
index 2dcd7eba9cb70cd6a2aa806cccb3b26ecd72cf73..0c3350f22b55868799b493144deb2938b045792c 100644 (file)
--- a/drivers/accel/ivpu/ivpu_gem.h
+++ b/drivers/accel/ivpu/ivpu_gem.h
@@ -82,6 +82,11 @@ static inline bool ivpu_bo_is_read_only(struct ivpu_bo *bo)
        return bo->flags & DRM_IVPU_BO_READ_ONLY;
 }
 
+static inline bool ivpu_bo_is_resident(struct ivpu_bo *bo)
+{
+       return !!bo->base.pages;
+}
+
 static inline void *ivpu_to_cpu_addr(struct ivpu_bo *bo, u32 vpu_addr)
 {
        if (vpu_addr < bo->vpu_addr)