Function report |
Source Code:kernel\trace\trace_events.c |
Create Date:2022-07-28 12:19:48 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:subsystem_open
Proto:static int subsystem_open(struct inode *inode, struct file *filp)
Type:int
Parameter:
Type | Parameter | Name |
---|---|---|
struct inode * | inode | |
struct file * | filp |
1419 | struct event_subsystem * system = NULL |
1420 | struct trace_subsystem_dir * dir = NULL |
1424 | If tracing_is_disabled() Then Return -ENODEV |
1428 | mutex_lock( & event_mutex) |
1432 | If dir == s or device private pointer Then |
1442 | exit_loop : |
1453 | If trace_array_get(tr) < 0 Then |
1454 | put_system(dir) |
1455 | Return -ENODEV |
1458 | ret = tracing_open_generic(inode, filp) |
1459 | If ret < 0 Then |
1461 | put_system(dir) |
1464 | Return ret |
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