258 static void bpf_tramp_image_free(struct bpf_tramp_image *im)  in bpf_tramp_image_free()  argument
260 	bpf_image_ksym_del(&im->ksym);  in bpf_tramp_image_free()
261 	arch_free_bpf_trampoline(im->image, im->size);  in bpf_tramp_image_free()
262 	bpf_jit_uncharge_modmem(im->size);  in bpf_tramp_image_free()
263 	percpu_ref_exit(&im->pcref);  in bpf_tramp_image_free()
264 	kfree_rcu(im, rcu);  in bpf_tramp_image_free()
269 	struct bpf_tramp_image *im;  in __bpf_tramp_image_put_deferred()  local
271 	im = container_of(work, struct bpf_tramp_image, work);  in __bpf_tramp_image_put_deferred()
272 	bpf_tramp_image_free(im);  in __bpf_tramp_image_put_deferred()
278 	struct bpf_tramp_image *im;  in __bpf_tramp_image_put_rcu()  local
280 	im = container_of(rcu, struct bpf_tramp_image, rcu);  in __bpf_tramp_image_put_rcu()
281 	INIT_WORK(&im->work, __bpf_tramp_image_put_deferred);  in __bpf_tramp_image_put_rcu()
282 	schedule_work(&im->work);  in __bpf_tramp_image_put_rcu()
288 	struct bpf_tramp_image *im;  in __bpf_tramp_image_release()  local
290 	im = container_of(pcref, struct bpf_tramp_image, pcref);  in __bpf_tramp_image_release()
291 	call_rcu_tasks(&im->rcu, __bpf_tramp_image_put_rcu);  in __bpf_tramp_image_release()
297 	struct bpf_tramp_image *im;  in __bpf_tramp_image_put_rcu_tasks()  local
299 	im = container_of(rcu, struct bpf_tramp_image, rcu);  in __bpf_tramp_image_put_rcu_tasks()
300 	if (im->ip_after_call)  in __bpf_tramp_image_put_rcu_tasks()
302 		percpu_ref_kill(&im->pcref);  in __bpf_tramp_image_put_rcu_tasks()
305 		call_rcu_tasks(&im->rcu, __bpf_tramp_image_put_rcu);  in __bpf_tramp_image_put_rcu_tasks()
308 static void bpf_tramp_image_put(struct bpf_tramp_image *im)  in bpf_tramp_image_put()  argument
336 	if (im->ip_after_call) {  in bpf_tramp_image_put()
337 		int err = bpf_arch_text_poke(im->ip_after_call, BPF_MOD_JUMP,  in bpf_tramp_image_put()
338 					     NULL, im->ip_epilogue);  in bpf_tramp_image_put()
341 			call_rcu_tasks(&im->rcu, __bpf_tramp_image_put_rcu_tasks);  in bpf_tramp_image_put()
343 			percpu_ref_kill(&im->pcref);  in bpf_tramp_image_put()
353 	call_rcu_tasks_trace(&im->rcu, __bpf_tramp_image_put_rcu_tasks);  in bpf_tramp_image_put()
358 	struct bpf_tramp_image *im;  in bpf_tramp_image_alloc()  local
363 	im = kzalloc(sizeof(*im), GFP_KERNEL);  in bpf_tramp_image_alloc()
364 	if (!im)  in bpf_tramp_image_alloc()
370 	im->size = size;  in bpf_tramp_image_alloc()
373 	im->image = image = arch_alloc_bpf_trampoline(size);  in bpf_tramp_image_alloc()
377 	err = percpu_ref_init(&im->pcref, __bpf_tramp_image_release, 0, GFP_KERNEL);  in bpf_tramp_image_alloc()
381 	ksym = &im->ksym;  in bpf_tramp_image_alloc()
386 	return im;  in bpf_tramp_image_alloc()
389 	arch_free_bpf_trampoline(im->image, im->size);  in bpf_tramp_image_alloc()
393 	kfree(im);  in bpf_tramp_image_alloc()
400 	struct bpf_tramp_image *im;  in bpf_trampoline_update()  local
452 	im = bpf_tramp_image_alloc(tr->key, size);  in bpf_trampoline_update()
453 	if (IS_ERR(im)) {  in bpf_trampoline_update()
454 		err = PTR_ERR(im);  in bpf_trampoline_update()
458 	err = arch_prepare_bpf_trampoline(im, im->image, im->image + size,  in bpf_trampoline_update()
464 	err = arch_protect_bpf_trampoline(im->image, im->size);  in bpf_trampoline_update()
471 		err = modify_fentry(tr, tr->cur_image->image, im->image, lock_direct_mutex);  in bpf_trampoline_update()
474 		err = register_fentry(tr, im->image);  in bpf_trampoline_update()
486 		/* free im memory and reallocate later */  in bpf_trampoline_update()
487 		bpf_tramp_image_free(im);  in bpf_trampoline_update()
496 	tr->cur_image = im;  in bpf_trampoline_update()
505 	bpf_tramp_image_free(im);  in bpf_trampoline_update()
1089 arch_prepare_bpf_trampoline(struct bpf_tramp_image *im, void *image, void *image_end,  in arch_prepare_bpf_trampoline()  argument