From 63cc028484abb7c2c61118f492b95083a2913b12 Mon Sep 17 00:00:00 2001 From: Karol Wachowski Date: Thu, 6 Nov 2025 11:10:51 +0100 Subject: [PATCH] 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 Signed-off-by: Karol Wachowski Link: https://patch.msgid.link/20251106101052.1050348-2-karol.wachowski@linux.intel.com --- drivers/accel/ivpu/ivpu_drv.c | 6 ++++++ drivers/accel/ivpu/ivpu_gem.c | 12 ++++++++++++ drivers/accel/ivpu/ivpu_gem.h | 5 +++++ 3 files changed, 23 insertions(+) diff --git a/drivers/accel/ivpu/ivpu_drv.c b/drivers/accel/ivpu/ivpu_drv.c index b305effcf003a..ce7dbd4730599 100644 --- 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 74b12c7e6caf3..ece68f570b7ea 100644 --- 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 2dcd7eba9cb70..0c3350f22b558 100644 --- 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) -- 2.47.3