238 	if (unlikely(head - local_read(&rb->wakeup) > rb->watermark))  in __perf_output_begin()
239 		local_add(rb->watermark, &rb->wakeup);  in __perf_output_begin()
315 ring_buffer_init(struct perf_buffer *rb, long watermark, int flags)  in ring_buffer_init()  argument
319 	if (watermark)  in ring_buffer_init()
320 		rb->watermark = min(max_size, watermark);  in ring_buffer_init()
322 	if (!rb->watermark)  in ring_buffer_init()
323 		rb->watermark = max_size / 2;  in ring_buffer_init()
678 		 pgoff_t pgoff, int nr_pages, long watermark, int flags)  in rb_alloc_aux()  argument
692 		 * Watermark defaults to half the buffer, and so does the  in rb_alloc_aux()
695 		if (!watermark)  in rb_alloc_aux()
696 			watermark = min_t(unsigned long,  in rb_alloc_aux()
702 		 * help PMU drivers honor the watermark.  in rb_alloc_aux()
704 		max_order = get_order(watermark);  in rb_alloc_aux()
711 		watermark = 0;  in rb_alloc_aux()
770 	rb->aux_watermark = watermark;  in rb_alloc_aux()
825 struct perf_buffer *rb_alloc(int nr_pages, long watermark, int cpu, int flags)  in rb_alloc()  argument
854 	ring_buffer_init(rb, watermark, flags);  in rb_alloc()
907 struct perf_buffer *rb_alloc(int nr_pages, long watermark, int cpu, int flags)  in rb_alloc()  argument
935 	ring_buffer_init(rb, watermark, flags);  in rb_alloc()