git: d1aee9f1535b - main - sys/time.h: add bintime2us() helper

The branch main has been updated by tuexen:

URL: https://cgit.FreeBSD.org/src/commit/?id=d1aee9f1535b02dc3db2a5bd1ac75213068a675a

commit d1aee9f1535b02dc3db2a5bd1ac75213068a675a
Author:     Nick Banks <nickbanks@netflix.com>
AuthorDate: 2026-05-12 19:26:24 +0000
Commit:     Michael Tuexen <tuexen@FreeBSD.org>
CommitDate: 2026-05-12 19:26:24 +0000

    sys/time.h: add bintime2us() helper
    
    Add a microsecond conversion helper to complement the existing
    bintime2ns(). The body mirrors bintime2ns().
    This will be used by an upcoming eventlog(9) framework as well as
    the TCP code in upcoming changes.
    
    Approved by:            gallatin, tuexen
    Sponsored by:           Netflix, Inc.
    Differential Revision:  https://reviews.freebsd.org/D56972
---
 sys/sys/time.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/sys/sys/time.h b/sys/sys/time.h
index 5255d3bc9c7e..ecde8a826499 100644
--- a/sys/sys/time.h
+++ b/sys/sys/time.h
@@ -308,6 +308,17 @@ bintime2ns(const struct bintime *_bt)
 	return (ret);
 }
 
+static __inline uint64_t
+bintime2us(const struct bintime *_bt)
+{
+	uint64_t ret;
+
+	ret = (uint64_t)(_bt->sec) * (uint64_t)1000000;
+	ret += __utime64_scale64_floor(
+	    _bt->frac, 1000000, 1ULL << 32) >> 32;
+	return (ret);
+}
+
 static __inline void
 timespec2bintime(const struct timespec *_ts, struct bintime *_bt)
 {