// SPDX-License-Identifier: MIT
/*
* Copyright © 2023 Intel Corporation
*/
#include "xe_drm_client.h"
#include <drm/drm_print.h>
#include <uapi/drm/xe_drm.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/types.h>
#include "xe_assert.h"
#include "xe_bo.h"
#include "xe_bo_types.h"
#include "xe_device_types.h"
#include "xe_exec_queue.h"
#include "xe_force_wake.h"
#include "xe_gt.h"
#include "xe_hw_engine.h"
#include "xe_pm.h"
#include "xe_trace.h"
/**
* DOC : DRM Client usage stats
*
* The drm / xe driver implements the DRM client usage stats specification as
* documented in : ref : ` drm - client - usage - stats ` .
*
* Example of the output showing the implemented key value pairs and entirety of
* the currently possible format options :
*
* : :
*
* pos : 0
* flags : 0100002
* mnt_id : 26
* ino : 685
* drm - driver : xe
* drm - client - id : 3
* drm - pdev : 0000 : 03 : 00 . 0
* drm - total - system : 0
* drm - shared - system : 0
* drm - active - system : 0
* drm - resident - system : 0
* drm - purgeable - system : 0
* drm - total - gtt : 192 KiB
* drm - shared - gtt : 0
* drm - active - gtt : 0
* drm - resident - gtt : 192 KiB
* drm - total - vram0 : 23992 KiB
* drm - shared - vram0 : 16 MiB
* drm - active - vram0 : 0
* drm - resident - vram0 : 23992 KiB
* drm - total - stolen : 0
* drm - shared - stolen : 0
* drm - active - stolen : 0
* drm - resident - stolen : 0
* drm - cycles - rcs : 28257900
* drm - total - cycles - rcs : 7655183225
* drm - cycles - bcs : 0
* drm - total - cycles - bcs : 7655183225
* drm - cycles - vcs : 0
* drm - total - cycles - vcs : 7655183225
* drm - engine - capacity - vcs : 2
* drm - cycles - vecs : 0
* drm - total - cycles - vecs : 7655183225
* drm - engine - capacity - vecs : 2
* drm - cycles - ccs : 0
* drm - total - cycles - ccs : 7655183225
* drm - engine - capacity - ccs : 4
*
* Possible ` drm - cycles - ` key names are : ` rcs ` , ` ccs ` , ` bcs ` , ` vcs ` , ` vecs ` and
* " other " .
*/
/**
* xe_drm_client_alloc ( ) - Allocate drm client
* @ void : No arg
*
* Allocate drm client struct to track client memory against
* same till client life . Call this API whenever new client
* has opened xe device .
*
* Return : pointer to client struct or NULL if can ' t allocate
*/
struct xe_drm_client *xe_drm_client_alloc(void )
{
struct xe_drm_client *client;
client = kzalloc(sizeof (*client), GFP_KERNEL);
if (!client)
return NULL;
kref_init(&client->kref);
#ifdef CONFIG_PROC_FS
spin_lock_init(&client->bos_lock);
INIT_LIST_HEAD(&client->bos_list);
#endif
return client;
}
/**
* _ _ xe_drm_client_free ( ) - Free client struct
* @ kref : The reference
*
* This frees client struct . Call this API when xe device is closed
* by drm client .
*
* Return : void
*/
void __xe_drm_client_free(struct kref *kref)
{
struct xe_drm_client *client =
container_of(kref, typeof(*client), kref);
kfree(client);
}
#ifdef CONFIG_PROC_FS
/**
* xe_drm_client_add_bo ( ) - Add BO for tracking client mem usage
* @ client : The drm client ptr
* @ bo : The xe BO ptr
*
* Add all BO created by individual drm client by calling this function .
* This helps in tracking client memory usage .
*
* Return : void
*/
void xe_drm_client_add_bo(struct xe_drm_client *client,
struct xe_bo *bo)
{
XE_WARN_ON(bo->client);
XE_WARN_ON(!list_empty(&bo->client_link));
bo->client = xe_drm_client_get(client);
spin_lock(&client->bos_lock);
list_add_tail(&bo->client_link, &client->bos_list);
spin_unlock(&client->bos_lock);
}
/**
* xe_drm_client_remove_bo ( ) - Remove BO for tracking client mem usage
* @ bo : The xe BO ptr
*
* Remove all BO removed by individual drm client by calling this function .
* This helps in tracking client memory usage .
*
* Return : void
*/
void xe_drm_client_remove_bo(struct xe_bo *bo)
{
struct xe_device *xe = ttm_to_xe_device(bo->ttm.bdev);
struct xe_drm_client *client = bo->client;
xe_assert(xe, !kref_read(&bo->ttm.base.refcount));
spin_lock(&client->bos_lock);
list_del_init(&bo->client_link);
spin_unlock(&client->bos_lock);
xe_drm_client_put(client);
}
static void bo_meminfo(struct xe_bo *bo,
struct drm_memory_stats stats[TTM_NUM_MEM_TYPES])
{
u64 sz = xe_bo_size(bo);
u32 mem_type = bo->ttm.resource->mem_type;
xe_bo_assert_held(bo);
if (drm_gem_object_is_shared_for_memory_stats(&bo->ttm.base))
stats[mem_type].shared += sz;
else
stats[mem_type].private += sz;
if (xe_bo_has_pages(bo)) {
stats[mem_type].resident += sz;
if (!dma_resv_test_signaled(bo->ttm.base.resv,
DMA_RESV_USAGE_BOOKKEEP))
stats[mem_type].active += sz;
else if (mem_type == XE_PL_SYSTEM)
stats[mem_type].purgeable += sz;
}
}
static void show_meminfo(struct drm_printer *p, struct drm_file *file)
{
struct drm_memory_stats stats[TTM_NUM_MEM_TYPES] = {};
struct xe_file *xef = file->driver_priv;
struct ttm_device *bdev = &xef->xe->ttm;
struct ttm_resource_manager *man;
struct xe_drm_client *client;
struct drm_gem_object *obj;
struct xe_bo *bo;
LLIST_HEAD(deferred);
unsigned int id;
u32 mem_type;
client = xef->client;
/* Public objects. */
spin_lock(&file->table_lock);
idr_for_each_entry(&file->object_idr, obj, id) {
struct xe_bo *bo = gem_to_xe_bo(obj);
if (dma_resv_trylock(bo->ttm.base.resv)) {
bo_meminfo(bo, stats);
xe_bo_unlock(bo);
} else {
xe_bo_get(bo);
spin_unlock(&file->table_lock);
xe_bo_lock(bo, false );
bo_meminfo(bo, stats);
xe_bo_unlock(bo);
xe_bo_put(bo);
spin_lock(&file->table_lock);
}
}
spin_unlock(&file->table_lock);
/* Internal objects. */
spin_lock(&client->bos_lock);
list_for_each_entry(bo, &client->bos_list, client_link) {
if (!kref_get_unless_zero(&bo->ttm.base.refcount))
continue ;
if (dma_resv_trylock(bo->ttm.base.resv)) {
bo_meminfo(bo, stats);
xe_bo_unlock(bo);
} else {
spin_unlock(&client->bos_lock);
xe_bo_lock(bo, false );
bo_meminfo(bo, stats);
xe_bo_unlock(bo);
spin_lock(&client->bos_lock);
/* The bo ref will prevent this bo from being removed from the list */
xe_assert(xef->xe, !list_empty(&bo->client_link));
}
xe_bo_put_deferred(bo, &deferred);
}
spin_unlock(&client->bos_lock);
xe_bo_put_commit(&deferred);
for (mem_type = XE_PL_SYSTEM; mem_type < TTM_NUM_MEM_TYPES; ++mem_type) {
if (!xe_mem_type_to_name[mem_type])
continue ;
man = ttm_manager_type(bdev, mem_type);
if (man) {
drm_print_memory_stats(p,
&stats[mem_type],
DRM_GEM_OBJECT_ACTIVE |
DRM_GEM_OBJECT_RESIDENT |
(mem_type != XE_PL_SYSTEM ? 0 :
DRM_GEM_OBJECT_PURGEABLE),
xe_mem_type_to_name[mem_type]);
}
}
}
static struct xe_hw_engine *any_engine(struct xe_device *xe)
{
struct xe_gt *gt;
unsigned long gt_id;
for_each_gt(gt, xe, gt_id) {
struct xe_hw_engine *hwe = xe_gt_any_hw_engine(gt);
if (hwe)
return hwe;
}
return NULL;
}
static bool force_wake_get_any_engine(struct xe_device *xe,
struct xe_hw_engine **phwe,
unsigned int *pfw_ref)
{
enum xe_force_wake_domains domain;
unsigned int fw_ref;
struct xe_hw_engine *hwe;
struct xe_force_wake *fw;
hwe = any_engine(xe);
if (!hwe)
return false ;
domain = xe_hw_engine_to_fw_domain(hwe);
fw = gt_to_fw(hwe->gt);
fw_ref = xe_force_wake_get(fw, domain);
if (!xe_force_wake_ref_has_domain(fw_ref, domain)) {
xe_force_wake_put(fw, fw_ref);
return false ;
}
*phwe = hwe;
*pfw_ref = fw_ref;
return true ;
}
static void show_run_ticks(struct drm_printer *p, struct drm_file *file)
{
unsigned long class , i, gt_id, capacity[XE_ENGINE_CLASS_MAX] = { };
struct xe_file *xef = file->driver_priv;
struct xe_device *xe = xef->xe;
struct xe_gt *gt;
struct xe_hw_engine *hwe;
struct xe_exec_queue *q;
u64 gpu_timestamp;
unsigned int fw_ref;
/*
* RING_TIMESTAMP registers are inaccessible in VF mode .
* Without drm - total - cycles - * , other keys provide little value .
* Show all or none of the optional " run_ticks " keys in this case .
*/
if (IS_SRIOV_VF(xe))
return ;
/*
* Wait for any exec queue going away : their cycles will get updated on
* context switch out , so wait for that to happen
*/
wait_var_event(&xef->exec_queue.pending_removal,
!atomic_read(&xef->exec_queue.pending_removal));
xe_pm_runtime_get(xe);
if (!force_wake_get_any_engine(xe, &hwe, &fw_ref)) {
xe_pm_runtime_put(xe);
return ;
}
/* Accumulate all the exec queues from this client */
mutex_lock(&xef->exec_queue.lock);
xa_for_each(&xef->exec_queue.xa, i, q) {
xe_exec_queue_get(q);
mutex_unlock(&xef->exec_queue.lock);
xe_exec_queue_update_run_ticks(q);
mutex_lock(&xef->exec_queue.lock);
xe_exec_queue_put(q);
}
mutex_unlock(&xef->exec_queue.lock);
gpu_timestamp = xe_hw_engine_read_timestamp(hwe);
xe_force_wake_put(gt_to_fw(hwe->gt), fw_ref);
xe_pm_runtime_put(xe);
for (class = 0 ; class < XE_ENGINE_CLASS_MAX; class ++) {
const char *class_name;
for_each_gt(gt, xe, gt_id)
capacity[class ] += gt->user_engines.instances_per_class[class ];
/*
* Engines may be fused off or not exposed to userspace . Don ' t
* return anything if this entire class is not available
*/
if (!capacity[class ])
continue ;
class_name = xe_hw_engine_class_to_str(class );
drm_printf(p, "drm-cycles-%s:\t%llu\n" ,
class_name, xef->run_ticks[class ]);
drm_printf(p, "drm-total-cycles-%s:\t%llu\n" ,
class_name, gpu_timestamp);
if (capacity[class ] > 1 )
drm_printf(p, "drm-engine-capacity-%s:\t%lu\n" ,
class_name, capacity[class ]);
}
}
/**
* xe_drm_client_fdinfo ( ) - Callback for fdinfo interface
* @ p : The drm_printer ptr
* @ file : The drm_file ptr
*
* This is callback for drm fdinfo interface . Register this callback
* in drm driver ops for show_fdinfo .
*
* Return : void
*/
void xe_drm_client_fdinfo(struct drm_printer *p, struct drm_file *file)
{
show_meminfo(p, file);
show_run_ticks(p, file);
}
#endif
Messung V0.5 in Prozent C=95 H=96 G=95
¤ Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.0.15Bemerkung:
(vorverarbeitet am 2026-09-28)
¤
*© Formatika GbR, Deutschland