Function report |
Source Code:kernel\trace\ring_buffer.c |
Create Date:2022-07-28 11:55:34 |
Last Modify:2020-03-17 19:30:04 | Copyright©Brick |
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Name:g_buffer_empty_cpu - is a cpu buffer of a ring buffer empty?*@buffer: The ring buffer*@cpu: The CPU buffer to test
Proto:bool ring_buffer_empty_cpu(struct ring_buffer *buffer, int cpu)
Type:bool
Parameter:
Type | Parameter | Name |
---|---|---|
struct ring_buffer * | buffer | |
int | cpu |
4488 | If Not pumask_test_cpu - test for a cpu in a cpumask*@cpu: cpu number (< nr_cpu_ids)*@cpumask: the cpumask pointer* Returns 1 if @cpu is set in @cpumask, else returns 0 Then Return true |
4491 | cpu_buffer = buffers[cpu] |
4492 | local_irq_save(flags) |
4493 | dolock = rb_reader_lock(cpu_buffer) |
4494 | ret = rb_per_cpu_empty(cpu_buffer) |
4495 | rb_reader_unlock(cpu_buffer, dolock) |
4496 | local_irq_restore(flags) |
4498 | Return ret |
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 |
__find_next_entry | |
trace_empty |
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