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Searched refs:head_page (Results 1 – 5 of 5) sorted by relevance

/linux-4.4.14/kernel/trace/
Dring_buffer.c443 struct buffer_page *head_page; /* read from head */ member
493 struct buffer_page *head_page; member
859 head = cpu_buffer->head_page; in rb_head_page_activate()
957 if (RB_WARN_ON(cpu_buffer, !cpu_buffer->head_page)) in rb_set_head_page()
965 page = head = cpu_buffer->head_page; in rb_set_head_page()
975 cpu_buffer->head_page = page; in rb_set_head_page()
1111 if (cpu_buffer->head_page) in rb_check_pages()
1249 cpu_buffer->head_page in rb_allocate_cpu_buffer()
1251 cpu_buffer->tail_page = cpu_buffer->commit_page = cpu_buffer->head_page; in rb_allocate_cpu_buffer()
1491 cpu_buffer->head_page = list_entry(next_page, in rb_remove_pages()
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Dtrace.h701 extern void *head_page(struct trace_array_cpu *data);
/linux-4.4.14/drivers/infiniband/core/
Dumem_odp.c648 struct page *head_page = compound_head(page); in ib_umem_odp_unmap_dma_pages() local
658 set_page_dirty(head_page); in ib_umem_odp_unmap_dma_pages()
/linux-4.4.14/Documentation/trace/
Dring-buffer-design.txt32 head_page - a pointer to the page that the reader will use next
96 The head_page, tail_page and commit_page are all initialized to point
106 it will swap its page with the head_page. The old reader page will
107 become part of the ring buffer and the head_page will be removed.
395 of the head_page pointer with the swapping of pages with the reader.
/linux-4.4.14/mm/
Dpage_alloc.c872 static int free_tail_pages_check(struct page *head_page, struct page *page) in free_tail_pages_check() argument
890 if (unlikely(compound_head(page) != head_page)) { in free_tail_pages_check()