Function report |
Source Code:kernel\trace\ring_buffer.c |
Create Date:2022-07-28 11:53:15 |
| Last Modify:2020-03-17 19:30:04 | Copyright©Brick |
| home page | Tree |
| Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:_is_head_page - test if the given page is the head page* Because the reader may move the head_page pointer, we can* not trust what the head page is (it may be pointing to* the reader page). But if the next page is a header page,
Proto:static inline int rb_is_head_page(struct ring_buffer_per_cpu *cpu_buffer, struct buffer_page *page, struct list_head *list)
Type:int
Parameter:
| Type | Parameter | Name |
|---|---|---|
| struct ring_buffer_per_cpu * | cpu_buffer | |
| struct buffer_page * | page | |
| struct list_head * | list |
| 876 | If ((val & ~RB_FLAG_MASK) != (unsigned long) & list of buffer pages ) Then Return PAGE_MOVED is not part of the mask |
| 879 | Return val & RB_FLAG_MASK |
| Name | Describe |
|---|---|
| rb_set_head_page | |
| rb_move_tail | This is the slow path, force gcc not to inline it. |
| Source code conversion tool public plug-in interface | X |
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