git: 30b16a6bcf01 - main - exit1(): update comment about thread_single()

The branch main has been updated by kib:

URL: https://cgit.FreeBSD.org/src/commit/?id=30b16a6bcf01c17b52daef76bf2320749e84bd89

commit 30b16a6bcf01c17b52daef76bf2320749e84bd89
Author:     Konstantin Belousov <kib@FreeBSD.org>
AuthorDate: 2022-08-12 20:16:29 +0000
Commit:     Konstantin Belousov <kib@FreeBSD.org>
CommitDate: 2022-08-20 17:33:17 +0000

    exit1(): update comment about thread_single()
    
    We do not check single-threading conditions in trap, or when sleeping
    uninterruptible.
    
    Reviewed by:    markj
    Sponsored by:   The FreeBSD Foundation
    MFC after:      3 days
    Differential revision:  https://reviews.freebsd.org/D36207
---
 sys/kern/kern_exit.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/sys/kern/kern_exit.c b/sys/kern/kern_exit.c
index c617bc73716d..68500c3b8721 100644
--- a/sys/kern/kern_exit.c
+++ b/sys/kern/kern_exit.c
@@ -276,16 +276,15 @@ exit1(struct thread *td, int rval, int signo)
 		 * Kill off the other threads. This requires
 		 * some co-operation from other parts of the kernel
 		 * so it may not be instantaneous.  With this state set
-		 * any thread entering the kernel from userspace will
-		 * thread_exit() in trap().  Any thread attempting to
+		 * any thread attempting to interruptibly
 		 * sleep will return immediately with EINTR or EWOULDBLOCK
 		 * which will hopefully force them to back out to userland
 		 * freeing resources as they go.  Any thread attempting
-		 * to return to userland will thread_exit() from userret().
+		 * to return to userland will thread_exit() from ast().
 		 * thread_exit() will unsuspend us when the last of the
 		 * other threads exits.
 		 * If there is already a thread singler after resumption,
-		 * calling thread_single will fail; in that case, we just
+		 * calling thread_single() will fail; in that case, we just
 		 * re-check all suspension request, the thread should
 		 * either be suspended there or exit.
 		 */