54 	/* The lock protects mode, size, area and t. */
60 	void			*area;  member
65 	/* Size of remote area (in long's). */
132 	struct kcov_remote_area *area;  in kcov_remote_area_get()  local
136 		area = list_entry(pos, struct kcov_remote_area, list);  in kcov_remote_area_get()
137 		if (area->size == size) {  in kcov_remote_area_get()
138 			list_del(&area->list);  in kcov_remote_area_get()
139 			return area;  in kcov_remote_area_get()
146 static void kcov_remote_area_put(struct kcov_remote_area *area,  in kcov_remote_area_put()  argument
149 	INIT_LIST_HEAD(&area->list);  in kcov_remote_area_put()
150 	area->size = size;  in kcov_remote_area_put()
151 	list_add(&area->list, &kcov_remote_areas);  in kcov_remote_area_put()
192 	unsigned long *area;  in __sanitizer_cov_trace_pc()  local
200 	area = t->kcov_area;  in __sanitizer_cov_trace_pc()
202 	pos = READ_ONCE(area[0]) + 1;  in __sanitizer_cov_trace_pc()
204 		area[pos] = ip;  in __sanitizer_cov_trace_pc()
205 		WRITE_ONCE(area[0], pos);  in __sanitizer_cov_trace_pc()
214 	u64 *area;  in write_comp_data()  local
227 	area = (u64 *)t->kcov_area;  in write_comp_data()
230 	count = READ_ONCE(area[0]);  in write_comp_data()
236 		area[start_index] = type;  in write_comp_data()
237 		area[start_index + 1] = arg1;  in write_comp_data()
238 		area[start_index + 2] = arg2;  in write_comp_data()
239 		area[start_index + 3] = ip;  in write_comp_data()
240 		WRITE_ONCE(area[0], count + 1);  in write_comp_data()
326 			unsigned int size, void *area, enum kcov_mode mode,  in kcov_start()  argument
329 	kcov_debug("t = %px, size = %u, area = %px\n", t, size, area);  in kcov_start()
333 	t->kcov_area = area;  in kcov_start()
408 		vfree(kcov->area);  in kcov_put()
459 	void *area;  in kcov_mmap()  local
465 	area = vmalloc_user(vma->vm_end - vma->vm_start);  in kcov_mmap()
466 	if (!area)  in kcov_mmap()
476 	if (!kcov->area) {  in kcov_mmap()
477 		kcov->area = area;  in kcov_mmap()
481 			page = vmalloc_to_page(kcov->area + off);  in kcov_mmap()
489 	vfree(area);  in kcov_mmap()
529  * Fault in a lazily-faulted vmalloc area before it can be used by
536 	unsigned long *area = kcov->area;  in kcov_fault_in_area()  local
540 		READ_ONCE(area[offset]);  in kcov_fault_in_area()
597 		if (kcov->mode != KCOV_MODE_INIT || !kcov->area)  in kcov_ioctl_locked()
607 		kcov_start(t, kcov, kcov->size, kcov->area, kcov->mode,  in kcov_ioctl_locked()
625 		if (kcov->mode != KCOV_MODE_INIT || !kcov->area)  in kcov_ioctl_locked()
766  * provided handle, allocates an area for coverage collection, and saves the
767  * pointers to kcov and area into the current task_struct to allow coverage to
770  * collecting coverage and copies all collected coverage into the kcov area.
817 	void *area;  in kcov_remote_start()  local
867 		area = kcov_remote_area_get(size);  in kcov_remote_start()
870 		area = this_cpu_ptr(&kcov_percpu_data)->irq_area;  in kcov_remote_start()
875 	if (!area) {  in kcov_remote_start()
876 		area = vmalloc(size * sizeof(unsigned long));  in kcov_remote_start()
877 		if (!area) {  in kcov_remote_start()
886 	*(u64 *)area = 0;  in kcov_remote_start()
892 	kcov_start(t, kcov, size, area, mode, sequence);  in kcov_remote_start()
960 	void *area;  in kcov_remote_stop()  local
991 	area = t->kcov_area;  in kcov_remote_stop()
1007 		kcov_move_area(kcov->mode, kcov->area, kcov->size, area);  in kcov_remote_stop()
1012 		kcov_remote_area_put(area, size);  in kcov_remote_stop()
1035 		void *area = vmalloc(CONFIG_KCOV_IRQ_AREA_SIZE *  in kcov_init()  local
1037 		if (!area)  in kcov_init()
1039 		per_cpu_ptr(&kcov_percpu_data, cpu)->irq_area = area;  in kcov_init()