git: e6db5eb9ec7b - main - vfs_mountroot: Skip 'Root mount waiting' < 1 s

The branch main has been updated by cperciva:

URL: https://cgit.FreeBSD.org/src/commit/?id=e6db5eb9ec7ba9edfc564fd5ade5fb40df9acebb

commit e6db5eb9ec7ba9edfc564fd5ade5fb40df9acebb
Author:     Colin Percival <cperciva@FreeBSD.org>
AuthorDate: 2021-12-20 15:17:25 +0000
Commit:     Colin Percival <cperciva@FreeBSD.org>
CommitDate: 2021-12-29 20:41:08 +0000

    vfs_mountroot: Skip 'Root mount waiting' < 1 s
    
    While the message is technically correct, it's not particularly
    helpful in the case where we're only waiting a few ms; this case
    occurs frequently on EC2 arm64 instances with CAM initialization
    racing to release its root hold before vfs_mountroot reaches this
    point.  Only print the message if we end up waiting for more than
    one second.
    
    Sponsored by:   https://www.patreon.com/cperciva
    Differential Revision:  https://reviews.freebsd.org/D33591
---
 sys/kern/vfs_mountroot.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/kern/vfs_mountroot.c b/sys/kern/vfs_mountroot.c
index 9f3959f06b86..bb431c38a6f6 100644
--- a/sys/kern/vfs_mountroot.c
+++ b/sys/kern/vfs_mountroot.c
@@ -986,6 +986,7 @@ vfs_mountroot_wait(void)
 
 	curfail = 0;
 	lastfail.tv_sec = 0;
+	ppsratecheck(&lastfail, &curfail, 1);
 	while (1) {
 		g_waitidle();
 		mtx_lock(&root_holds_mtx);