[src/trunk]: src/sys/sys sys/rndsource.h: Update comment to reflect new use o...

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/af2f1934963c
branches:  trunk
changeset: 377539:af2f1934963c
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Sun Jul 16 10:36:02 2023 +0000

description:
sys/rndsource.h: Update comment to reflect new use of delta members.

No functional change intended.

XXX pullup-10

diffstat:

 sys/sys/rndsource.h |  8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diffs (29 lines):

diff -r ff222ae0ca90 -r af2f1934963c sys/sys/rndsource.h
--- a/sys/sys/rndsource.h       Sun Jul 16 10:20:07 2023 +0000
+++ b/sys/sys/rndsource.h       Sun Jul 16 10:36:02 2023 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: rndsource.h,v 1.7 2020/04/30 03:28:19 riastradh Exp $  */
+/*     $NetBSD: rndsource.h,v 1.8 2023/07/16 10:36:02 riastradh Exp $  */
 
 /*-
  * Copyright (c) 2019 The NetBSD Foundation, Inc.
@@ -46,7 +46,7 @@ struct percpu;
 /*
  * struct rnd_delta_estimator
  *
- *     Unused.  Preserved for ABI compatibility.
+ *     State for the time-delta entropy estimation model.
  */
 typedef struct rnd_delta_estimator {
        uint64_t        x;
@@ -68,8 +68,8 @@ typedef struct rnd_delta_estimator {
 struct krndsource {
        LIST_ENTRY(krndsource) list;    /* the linked list */
         char            name[16];       /* device name */
-       rnd_delta_t     time_delta;     /* unused */
-       rnd_delta_t     value_delta;    /* unused */
+       rnd_delta_t     time_delta;     /* time samples added while cold */
+       rnd_delta_t     value_delta;    /* value samples added whiel cold */
         uint32_t        total;          /* number of bits added while cold */
         uint32_t        type;           /* type, RND_TYPE_* */
         uint32_t        flags;          /* flags, RND_FLAG_* */