Function report |
Source Code:kernel\events\core.c |
Create Date:2022-07-28 13:41:34 |
Last Modify:2022-05-20 07:50:19 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:Inherits an event group.* This will quietly suppress orphaned events; !inherit_event() is not an error.* This matches with perf_event_release_kernel() removing all child events.* Returns:* - 0 on success* - <0 on error
Proto:static int inherit_group(struct perf_event *parent_event, struct task_struct *parent, struct perf_event_context *parent_ctx, struct task_struct *child, struct perf_event_context *child_ctx)
Type:int
Parameter:
Type | Parameter | Name |
---|---|---|
struct perf_event * | parent_event | |
struct task_struct * | parent | |
struct perf_event_context * | parent_ctx | |
struct task_struct * | child | |
struct perf_event_context * | child_ctx |
12185 | leader = Inherit an event from parent task to child task.* Returns:* - valid pointer on success* - NULL for orphaned events* - IS_ERR() on error |
12195 | child_ctr = Inherit an event from parent task to child task.* Returns:* - valid pointer on success* - NULL for orphaned events* - IS_ERR() on error |
12200 | If aux_event == parent_event && child_ctr && Not perf_get_aux_event(child_ctr, leader) Then Return -EINVAL |
12204 | Return 0 |
Name | Describe |
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inherit_task_group | Creates the child task context and tries to inherit the event-group.* Clears @inherited_all on !attr.inherited or error. Note that we'll leave* inherited_all set when we 'fail' to inherit an orphaned event; this is |
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