6.14-stable review patch. If anyone has any objections, please let me know.
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From: Adrián Larumbe adrian.larumbe@collabora.com
[ Upstream commit 434e5ca5b5d7ea415670d4fcb399d90d355a1e38 ]
This will display the sizes of kenrel BO's bound to an open file, which are otherwise not exposed to UM through a handle.
The sizes recorded are as follows: - Per group: suspend buffer, protm-suspend buffer, syncobjcs - Per queue: ringbuffer, profiling slots, firmware interface - For all heaps in all heap pools across all VM's bound to an open file, record size of all heap chuks, and for each pool the gpu_context BO too.
This does not record the size of FW regions, as these aren't bound to a specific open file and remain active through the whole life of the driver.
Reviewed-by: Liviu Dudau liviu.dudau@arm.com Reviewed-by: Mihail Atanassov mihail.atanassov@arm.com Reviewed-by: Steven Price steven.price@arm.com Reviewed-by: Boris Brezillon boris.brezillon@collabora.com Signed-off-by: Adrián Larumbe adrian.larumbe@collabora.com Signed-off-by: Boris Brezillon boris.brezillon@collabora.com Link: https://patchwork.freedesktop.org/patch/msgid/20250130172851.941597-4-adrian... Stable-dep-of: e379856b428a ("drm/panthor: Replace sleep locks with spinlocks in fdinfo path") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/panthor/panthor_drv.c | 14 +++++++ drivers/gpu/drm/panthor/panthor_heap.c | 26 ++++++++++++ drivers/gpu/drm/panthor/panthor_heap.h | 2 + drivers/gpu/drm/panthor/panthor_mmu.c | 33 +++++++++++++++ drivers/gpu/drm/panthor/panthor_mmu.h | 3 ++ drivers/gpu/drm/panthor/panthor_sched.c | 56 ++++++++++++++++++++++++- drivers/gpu/drm/panthor/panthor_sched.h | 3 ++ 7 files changed, 136 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/panthor/panthor_drv.c b/drivers/gpu/drm/panthor/panthor_drv.c index 08136e790ca0a..06fe46e320738 100644 --- a/drivers/gpu/drm/panthor/panthor_drv.c +++ b/drivers/gpu/drm/panthor/panthor_drv.c @@ -1458,12 +1458,26 @@ static void panthor_gpu_show_fdinfo(struct panthor_device *ptdev, drm_printf(p, "drm-curfreq-panthor:\t%lu Hz\n", ptdev->current_frequency); }
+static void panthor_show_internal_memory_stats(struct drm_printer *p, struct drm_file *file) +{ + char *drv_name = file->minor->dev->driver->name; + struct panthor_file *pfile = file->driver_priv; + struct drm_memory_stats stats = {0}; + + panthor_fdinfo_gather_group_mem_info(pfile, &stats); + panthor_vm_heaps_sizes(pfile, &stats); + + drm_fdinfo_print_size(p, drv_name, "resident", "memory", stats.resident); + drm_fdinfo_print_size(p, drv_name, "active", "memory", stats.active); +} + static void panthor_show_fdinfo(struct drm_printer *p, struct drm_file *file) { struct drm_device *dev = file->minor->dev; struct panthor_device *ptdev = container_of(dev, struct panthor_device, base);
panthor_gpu_show_fdinfo(ptdev, file->driver_priv, p); + panthor_show_internal_memory_stats(p, file);
drm_show_memory_stats(p, file); } diff --git a/drivers/gpu/drm/panthor/panthor_heap.c b/drivers/gpu/drm/panthor/panthor_heap.c index 3796a9eb22af2..db0285ce58126 100644 --- a/drivers/gpu/drm/panthor/panthor_heap.c +++ b/drivers/gpu/drm/panthor/panthor_heap.c @@ -603,3 +603,29 @@ void panthor_heap_pool_destroy(struct panthor_heap_pool *pool)
panthor_heap_pool_put(pool); } + +/** + * panthor_heap_pool_size() - Calculate size of all chunks across all heaps in a pool + * @pool: Pool whose total chunk size to calculate. + * + * This function adds the size of all heap chunks across all heaps in the + * argument pool. It also adds the size of the gpu contexts kernel bo. + * It is meant to be used by fdinfo for displaying the size of internal + * driver BO's that aren't exposed to userspace through a GEM handle. + * + */ +size_t panthor_heap_pool_size(struct panthor_heap_pool *pool) +{ + struct panthor_heap *heap; + unsigned long i; + size_t size = 0; + + down_read(&pool->lock); + xa_for_each(&pool->xa, i, heap) + size += heap->chunk_size * heap->chunk_count; + up_read(&pool->lock); + + size += pool->gpu_contexts->obj->size; + + return size; +} diff --git a/drivers/gpu/drm/panthor/panthor_heap.h b/drivers/gpu/drm/panthor/panthor_heap.h index 25a5f2bba4457..e3358d4e8edb2 100644 --- a/drivers/gpu/drm/panthor/panthor_heap.h +++ b/drivers/gpu/drm/panthor/panthor_heap.h @@ -27,6 +27,8 @@ struct panthor_heap_pool * panthor_heap_pool_get(struct panthor_heap_pool *pool); void panthor_heap_pool_put(struct panthor_heap_pool *pool);
+size_t panthor_heap_pool_size(struct panthor_heap_pool *pool); + int panthor_heap_grow(struct panthor_heap_pool *pool, u64 heap_gpu_va, u32 renderpasses_in_flight, diff --git a/drivers/gpu/drm/panthor/panthor_mmu.c b/drivers/gpu/drm/panthor/panthor_mmu.c index c39e3eb1c15d5..11771ca8147f9 100644 --- a/drivers/gpu/drm/panthor/panthor_mmu.c +++ b/drivers/gpu/drm/panthor/panthor_mmu.c @@ -1941,6 +1941,39 @@ struct panthor_heap_pool *panthor_vm_get_heap_pool(struct panthor_vm *vm, bool c return pool; }
+/** + * panthor_vm_heaps_sizes() - Calculate size of all heap chunks across all + * heaps over all the heap pools in a VM + * @pfile: File. + * @stats: Memory stats to be updated. + * + * Calculate all heap chunk sizes in all heap pools bound to a VM. If the VM + * is active, record the size as active as well. + */ +void panthor_vm_heaps_sizes(struct panthor_file *pfile, struct drm_memory_stats *stats) +{ + struct panthor_vm *vm; + unsigned long i; + + if (!pfile->vms) + return; + + xa_lock(&pfile->vms->xa); + xa_for_each(&pfile->vms->xa, i, vm) { + size_t size = 0; + + mutex_lock(&vm->heaps.lock); + if (vm->heaps.pool) + size = panthor_heap_pool_size(vm->heaps.pool); + mutex_unlock(&vm->heaps.lock); + + stats->resident += size; + if (vm->as.id >= 0) + stats->active += size; + } + xa_unlock(&pfile->vms->xa); +} + static u64 mair_to_memattr(u64 mair, bool coherent) { u64 memattr = 0; diff --git a/drivers/gpu/drm/panthor/panthor_mmu.h b/drivers/gpu/drm/panthor/panthor_mmu.h index 8d21e83d8aba1..fc274637114e5 100644 --- a/drivers/gpu/drm/panthor/panthor_mmu.h +++ b/drivers/gpu/drm/panthor/panthor_mmu.h @@ -9,6 +9,7 @@
struct drm_exec; struct drm_sched_job; +struct drm_memory_stats; struct panthor_gem_object; struct panthor_heap_pool; struct panthor_vm; @@ -37,6 +38,8 @@ int panthor_vm_flush_all(struct panthor_vm *vm); struct panthor_heap_pool * panthor_vm_get_heap_pool(struct panthor_vm *vm, bool create);
+void panthor_vm_heaps_sizes(struct panthor_file *pfile, struct drm_memory_stats *stats); + struct panthor_vm *panthor_vm_get(struct panthor_vm *vm); void panthor_vm_put(struct panthor_vm *vm); struct panthor_vm *panthor_vm_create(struct panthor_device *ptdev, bool for_mcu, diff --git a/drivers/gpu/drm/panthor/panthor_sched.c b/drivers/gpu/drm/panthor/panthor_sched.c index 1349581196780..2f92ef2b5ab99 100644 --- a/drivers/gpu/drm/panthor/panthor_sched.c +++ b/drivers/gpu/drm/panthor/panthor_sched.c @@ -628,7 +628,7 @@ struct panthor_group { */ struct panthor_kernel_bo *syncobjs;
- /** @fdinfo: Per-file total cycle and timestamp values reference. */ + /** @fdinfo: Per-file info exposed through /proc/<process>/fdinfo */ struct { /** @data: Total sampled values for jobs in queues from this group. */ struct panthor_gpu_usage data; @@ -638,6 +638,9 @@ struct panthor_group { * and job post-completion processing function */ struct mutex lock; + + /** @fdinfo.kbo_sizes: Aggregate size of private kernel BO's held by the group. */ + size_t kbo_sizes; } fdinfo;
/** @state: Group state. */ @@ -3383,6 +3386,29 @@ group_create_queue(struct panthor_group *group, return ERR_PTR(ret); }
+static void add_group_kbo_sizes(struct panthor_device *ptdev, + struct panthor_group *group) +{ + struct panthor_queue *queue; + int i; + + if (drm_WARN_ON(&ptdev->base, IS_ERR_OR_NULL(group))) + return; + if (drm_WARN_ON(&ptdev->base, ptdev != group->ptdev)) + return; + + group->fdinfo.kbo_sizes += group->suspend_buf->obj->size; + group->fdinfo.kbo_sizes += group->protm_suspend_buf->obj->size; + group->fdinfo.kbo_sizes += group->syncobjs->obj->size; + + for (i = 0; i < group->queue_count; i++) { + queue = group->queues[i]; + group->fdinfo.kbo_sizes += queue->ringbuf->obj->size; + group->fdinfo.kbo_sizes += queue->iface.mem->obj->size; + group->fdinfo.kbo_sizes += queue->profiling.slots->obj->size; + } +} + #define MAX_GROUPS_PER_POOL 128
int panthor_group_create(struct panthor_file *pfile, @@ -3507,6 +3533,7 @@ int panthor_group_create(struct panthor_file *pfile, } mutex_unlock(&sched->reset.lock);
+ add_group_kbo_sizes(group->ptdev, group); mutex_init(&group->fdinfo.lock);
return gid; @@ -3626,6 +3653,33 @@ void panthor_group_pool_destroy(struct panthor_file *pfile) pfile->groups = NULL; }
+/** + * panthor_fdinfo_gather_group_mem_info() - Retrieve aggregate size of all private kernel BO's + * belonging to all the groups owned by an open Panthor file + * @pfile: File. + * @stats: Memory statistics to be updated. + * + */ +void +panthor_fdinfo_gather_group_mem_info(struct panthor_file *pfile, + struct drm_memory_stats *stats) +{ + struct panthor_group_pool *gpool = pfile->groups; + struct panthor_group *group; + unsigned long i; + + if (IS_ERR_OR_NULL(gpool)) + return; + + xa_lock(&gpool->xa); + xa_for_each(&gpool->xa, i, group) { + stats->resident += group->fdinfo.kbo_sizes; + if (group->csg_id >= 0) + stats->active += group->fdinfo.kbo_sizes; + } + xa_unlock(&gpool->xa); +} + static void job_release(struct kref *ref) { struct panthor_job *job = container_of(ref, struct panthor_job, refcount); diff --git a/drivers/gpu/drm/panthor/panthor_sched.h b/drivers/gpu/drm/panthor/panthor_sched.h index 5ae6b4bde7c50..e650a445cf507 100644 --- a/drivers/gpu/drm/panthor/panthor_sched.h +++ b/drivers/gpu/drm/panthor/panthor_sched.h @@ -9,6 +9,7 @@ struct dma_fence; struct drm_file; struct drm_gem_object; struct drm_sched_job; +struct drm_memory_stats; struct drm_panthor_group_create; struct drm_panthor_queue_create; struct drm_panthor_group_get_state; @@ -36,6 +37,8 @@ void panthor_job_update_resvs(struct drm_exec *exec, struct drm_sched_job *job);
int panthor_group_pool_create(struct panthor_file *pfile); void panthor_group_pool_destroy(struct panthor_file *pfile); +void panthor_fdinfo_gather_group_mem_info(struct panthor_file *pfile, + struct drm_memory_stats *stats);
int panthor_sched_init(struct panthor_device *ptdev); void panthor_sched_unplug(struct panthor_device *ptdev);