Checks if a given trace hook word is being traced by system trace.
The trc_ishookon kernel service informs the user if tracing is on and the specified hook word is being traced.
| Item | Description |
|---|---|
| chan | The channel to query with the range from 0 to 7. |
| hkwd | The hook word to be traced by system trace. |
| Item | Description |
|---|---|
| 1 | The hook word is being traced. |
| 0 | Hook word is not being traced or system trace is off. |