Function report |
Source Code:kernel\trace\ring_buffer.c |
Create Date:2022-07-28 11:55:32 |
Last Modify:2020-03-17 19:30:04 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:d_buffer_empty - is the ring buffer empty?*@buffer: The ring buffer to test
Proto:bool ring_buffer_empty(struct ring_buffer *buffer)
Type:bool
Parameter:
Type | Parameter | Name |
---|---|---|
struct ring_buffer * | buffer |
4460 | for_each_buffer_cpu(buffer, cpu) |
4461 | cpu_buffer = buffers[cpu] |
4462 | local_irq_save(flags) |
4463 | dolock = rb_reader_lock(cpu_buffer) |
4464 | ret = rb_per_cpu_empty(cpu_buffer) |
4465 | rb_reader_unlock(cpu_buffer, dolock) |
4466 | local_irq_restore(flags) |
4468 | If Not ret Then Return false |
4472 | Return true |
Name | Describe |
---|---|
ring_buffer_wait | g_buffer_wait - wait for input to the ring buffer*@buffer: buffer to wait on*@cpu: the cpu buffer to wait on*@full: wait until a full page is available, if @cpu != RING_BUFFER_ALL_CPUS* If @cpu == RING_BUFFER_ALL_CPUS then the task will wake up as soon |
ring_buffer_poll_wait | g_buffer_poll_wait - poll on buffer input*@buffer: buffer to wait on*@cpu: the cpu buffer to wait on*@filp: the file descriptor*@poll_table: The poll descriptor* If @cpu == RING_BUFFER_ALL_CPUS then the task will wake up as soon |
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