233 	if (unlikely(head - local_read(&rb->wakeup) > rb->watermark))  in __perf_output_begin()
234 		local_add(rb->watermark, &rb->wakeup);  in __perf_output_begin()
310 ring_buffer_init(struct perf_buffer *rb, long watermark, int flags)  in ring_buffer_init()  argument
314 	if (watermark)  in ring_buffer_init()
315 		rb->watermark = min(max_size, watermark);  in ring_buffer_init()
317 	if (!rb->watermark)  in ring_buffer_init()
318 		rb->watermark = max_size / 2;  in ring_buffer_init()
672 		 pgoff_t pgoff, int nr_pages, long watermark, int flags)  in rb_alloc_aux()  argument
683 		 * Watermark defaults to half the buffer, and so does the  in rb_alloc_aux()
686 		if (!watermark)  in rb_alloc_aux()
687 			watermark = nr_pages << (PAGE_SHIFT - 1);  in rb_alloc_aux()
691 		 * help PMU drivers honor the watermark.  in rb_alloc_aux()
693 		max_order = get_order(watermark);  in rb_alloc_aux()
700 		watermark = 0;  in rb_alloc_aux()
759 	rb->aux_watermark = watermark;  in rb_alloc_aux()
815 struct perf_buffer *rb_alloc(int nr_pages, long watermark, int cpu, int flags)  in rb_alloc()  argument
844 	ring_buffer_init(rb, watermark, flags);  in rb_alloc()
912 struct perf_buffer *rb_alloc(int nr_pages, long watermark, int cpu, int flags)  in rb_alloc()  argument
940 	ring_buffer_init(rb, watermark, flags);  in rb_alloc()