Re: Why need not to PROC_UNLOCK() in kthread_suspend()/kproc_suspend()?
Konstantin Belousov <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.threading |
|---|---|
| Message-ID | <[email protected]> |
On Mon, Dec 26, 2016 at 06:26:48PM +0800, jinjun gao wrote: > Hi Guys, > > In file sys/kern/kern_kthread.c ( > https://github.com/freebsd/freebsd/blob/master/sys/kern/kern_kthread.c), > the PROC_LOCK() and PROC_UNLOCK() are used in pairs in one function except > function kthread_suspend()/kproc_suspend() ( > https://github.com/freebsd/freebsd/blob/master/sys/kern/kern_kthread.c#L177). > In these two functions, there is only PROC_LOCK(). I checked may related > function(such as kproc_resume()) and can not find PROC_UNLOCK() to pair the > one resided in kproc_suspend(). Why need not PROC_UNLOCK() to pair > PROC_LOCK() in kproc_suspend()/kthread_suspend()? Thanks! > Because later msleep(9) is called with the process lock and PDROP flag. _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-threads To unsubscribe, send any mail to "[email protected]"