Function report |
Source Code:kernel\trace\trace_events.c |
Create Date:2022-07-28 12:18:51 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:__ftrace_event_enable_disable
Proto:static int __ftrace_event_enable_disable(struct trace_event_file *file, int enable, int soft_disable)
Type:int
Parameter:
Type | Parameter | Name |
---|---|---|
struct trace_event_file * | file | |
int | enable | |
int | soft_disable |
365 | call = event_call |
368 | ret = 0 |
372 | Case enable == 0 |
386 | If soft_disable Then |
387 | If atomic_dec_return( & soft-mode reference counter ) > 0 Then Break |
413 | Break |
414 | Case enable == 1 |
423 | If Not soft_disable Then lear_bit - Clears a bit in memory*@nr: Bit to clear*@addr: Address to start counting from* This is a relaxed atomic operation (no implied memory barriers). |
425 | Else |
426 | If atomic_inc_return( & soft-mode reference counter ) > 1 Then Break |
432 | bool cmd = TSC's on different sockets may be reset asynchronously.* This may cause the TSC ADJUST value on socket 0 to be NOT 0., tgid = false |
435 | If soft_disable Then Atomically set a bit in memory |
438 | If trace_flags & TRACE_ITER_RECORD_CMD Then |
444 | If trace_flags & TRACE_ITER_RECORD_TGID Then |
450 | ret = reg(call, TRACE_REG_REGISTER, file) |
451 | If ret Then |
452 | If cmd Then tracing_stop_cmdline_record() |
454 | If tgid Then tracing_stop_tgid_record() |
456 | pr_info("event trace: Could not enable event %s\n", trace_event_name(call)) |
458 | Break |
465 | Break |
477 | Return ret |
Name | Describe |
---|---|
trace_event_enable_disable | |
ftrace_event_enable_disable |
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