Function report |
Source Code:kernel\events\ring_buffer.c |
Create Date:2022-07-28 13:42:05 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:perf_output_put_handle
Proto:static void perf_output_put_handle(struct perf_output_handle *handle)
Type:void
Parameter:
Type | Parameter | Name |
---|---|---|
struct perf_output_handle * | handle |
60 | nest = READ_ONCE( nested writers ) |
61 | If nest > 1 Then |
62 | WRITE_ONCE( nested writers , nest - 1) |
63 | Go to out |
66 | again : |
76 | head = local_read( & write position ) |
109 | smp_wmb() |
118 | WRITE_ONCE( nested writers , 0) |
125 | If Value for the false possibility is greater at compile time(head != local_read( & write position )) Then |
126 | WRITE_ONCE( nested writers , 1) |
127 | Go to again |
130 | If wakeup != local_read( & wakeup stamp ) Then perf_output_wakeup(handle) |
133 | out : |
134 | preempt_enable() |
Name | Describe |
---|---|
__perf_output_begin | |
perf_output_end |
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