Function report |
Source Code:kernel\events\core.c |
Create Date:2022-07-28 13:31:52 |
| Last Modify:2022-05-20 07:50:19 | Copyright©Brick |
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| Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:This must be done under the ctx->lock, such as to serialize against* context_equiv(), therefore we cannot call put_ctx() since that might end up* calling scheduler related locks and ctx->lock nests inside those.
Proto:static __must_check struct perf_event_context *unclone_ctx(struct perf_event_context *ctx)
Type:struct perf_event_context
Parameter:
| Type | Parameter | Name |
|---|---|---|
| struct perf_event_context * | ctx |
| 1310 | parent_ctx = These fields let us detect when two contexts have both* been cloned (inherited) from a common ancestor. |
| 1312 | lockdep_assert_held( & Protect the states of the events in the list,* nr_active, and the list:) |
| 1314 | If parent_ctx Then These fields let us detect when two contexts have both* been cloned (inherited) from a common ancestor. = NULL |
| 1316 | generation++ |
| 1318 | Return parent_ctx |
| Name | Describe |
|---|---|
| perf_event_enable_on_exec | Enable all of a task's events that have been marked enable-on-exec.* This expects task == current. |
| find_get_context | Returns a matching context with refcount and pincount. |
| perf_event_exit_task_context |
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