git: d03a8d181cfe - stable/13 - randomdev: Remove 100 ms sleep from write routine

The branch stable/13 has been updated by cperciva:

URL: https://cgit.FreeBSD.org/src/commit/?id=d03a8d181cfedde305602c9285ca4b51fee8562f

commit d03a8d181cfedde305602c9285ca4b51fee8562f
Author:     Colin Percival <cperciva@FreeBSD.org>
AuthorDate: 2021-11-13 16:38:09 +0000
Commit:     Colin Percival <cperciva@FreeBSD.org>
CommitDate: 2021-12-05 18:27:01 +0000

    randomdev: Remove 100 ms sleep from write routine
    
    This was introduced in 2014 along with the comment (which has since
    been deleted):
            /* Introduce an annoying delay to stop swamping */
    
    Modern cryptographic random number generators can ingest arbitrarily
    large amounts of non-random (or even maliciously selected) input
    without losing their security.
    
    Depending on the number of "boot entropy files" present on the system,
    this can speed up the boot process by up to 1 second.
    
    Reviewed by:    cem
    Sponsored by:   https://www.patreon.com/cperciva
    Differential Revision:  https://reviews.freebsd.org/D32984
    
    (cherry picked from commit 1580afcd6eaf803192f014f3658036cbd49a6e3c)
---
 sys/dev/random/randomdev.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/sys/dev/random/randomdev.c b/sys/dev/random/randomdev.c
index 4b032cd3feb9..02b92d226417 100644
--- a/sys/dev/random/randomdev.c
+++ b/sys/dev/random/randomdev.c
@@ -340,7 +340,6 @@ randomdev_write(struct cdev *dev __unused, struct uio *uio, int flags __unused)
 		if (error)
 			break;
 		randomdev_accumulate(random_buf, c);
-		tsleep(p_random_alg_context, 0, "randwr", hz/10);
 	}
 	if (nbytes != uio->uio_resid && (error == ERESTART || error == EINTR))
 		/* Partial write, not error. */