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Retire thread_unthread(), it has only one caller. Update comment in

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the block of code before the previous call to thread_unthread().

Discussed with:	alc
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
This commit is contained in:
Konstantin Belousov 2014-09-03 08:35:42 +00:00
parent bf7dcda366
commit 8626a0ddc6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=271007
2 changed files with 5 additions and 19 deletions
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23
sys/kern/kern_thread.c
View File

@ -548,18 +548,6 @@ thread_link(struct thread *td, struct proc *p)
p->p_numthreads++;
}
/*
* Convert a process with one thread to an unthreaded process.
*/
void
thread_unthread(struct thread *td)
{
struct proc *p = td->td_proc;
KASSERT((p->p_numthreads == 1), ("Unthreading with >1 threads"));
p->p_flag &= ~P_HADTHREADS;
}
/*
* Called from:
* thread_exit()
@ -712,14 +700,13 @@ thread_single(int mode)
}
if (mode == SINGLE_EXIT) {
/*
* We have gotten rid of all the other threads and we
* are about to either exit or exec. In either case,
* we try our utmost to revert to being a non-threaded
* process.
* Convert the process to an unthreaded process. The
* SINGLE_EXIT is called by exit1() or execve(), in
* both cases other threads must be retired.
*/
KASSERT(p->p_numthreads == 1, ("Unthreading with >1 threads"));
p->p_singlethread = NULL;
p->p_flag &= ~(P_STOPPED_SINGLE | P_SINGLE_EXIT);
thread_unthread(td);
p->p_flag &= ~(P_STOPPED_SINGLE | P_SINGLE_EXIT | P_HADTHREADS);
/*
* Wait for any remaining threads to exit cpu_throw().

1
sys/sys/proc.h
View File

@ -956,7 +956,6 @@ void thread_suspend_one(struct thread *td);
void thread_unlink(struct thread *td);
void thread_unsuspend(struct proc *p);
int thread_unsuspend_one(struct thread *td);
void thread_unthread(struct thread *td);
void thread_wait(struct proc *p);
struct thread *thread_find(struct proc *p, lwpid_t tid);