Function report |
Source Code:kernel\trace\ring_buffer.c |
Create Date:2022-07-28 11:55:37 |
| Last Modify:2020-03-17 19:30:04 | Copyright©Brick |
| home page | Tree |
| Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:g_buffer_free_read_page - free an allocated read page*@buffer: the buffer the page was allocate for*@cpu: the cpu buffer the page came from*@data: the page to free* Free a page allocated from ring_buffer_alloc_read_page.
Proto:void ring_buffer_free_read_page(struct ring_buffer *buffer, int cpu, void *data)
Type:void
Parameter:
| Type | Parameter | Name |
|---|---|---|
| struct ring_buffer * | buffer | |
| int | cpu | |
| void * | data |
| 4642 | cpu_buffer = buffers[cpu] |
| 4644 | page = virt_to_page(kaddr) returns a valid pointer if and only if* virt_addr_valid(kaddr) returns true.(bpage) |
| 4648 | If page_ref_count(page) > 1 Then Go to out |
| 4651 | local_irq_save(flags) |
| 4652 | r sched/core.c and kernel_lock.c: ( & lock) |
| 4654 | If Not free_page Then |
| 4659 | arch_spin_unlock( & lock) |
| 4660 | local_irq_restore(flags) |
| 4662 | out : |
| Name | Describe |
|---|---|
| read_page | |
| tracing_buffers_release | |
| buffer_ref_release | |
| tracing_buffers_splice_read |
| Source code conversion tool public plug-in interface | X |
|---|---|
| Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion |