git: 88122c8eb70d - stable/15 - LinuxKPI: maths64: implement roundup_u64()

The branch stable/15 has been updated by bz:

URL: https://cgit.FreeBSD.org/src/commit/?id=88122c8eb70d81decb7c6dd16e551c3df6ad3818

commit 88122c8eb70d81decb7c6dd16e551c3df6ad3818
Author:     Bjoern A. Zeeb <bz@FreeBSD.org>
AuthorDate: 2025-09-04 20:27:48 +0000
Commit:     Bjoern A. Zeeb <bz@FreeBSD.org>
CommitDate: 2025-09-15 14:52:54 +0000

    LinuxKPI: maths64: implement roundup_u64()
    
    Needed by a wifi driver update.
    
    Sponsored by:   The FreeBSD Foundation (initially)
    Reviewed by:    dumbbell
    Differential Revision:  https://reviews.freebsd.org/D52080
    
    (cherry picked from commit 2a44e10edb13e6b2be7fa2814b418a6959cb1171)
---
 sys/compat/linuxkpi/common/include/linux/math64.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sys/compat/linuxkpi/common/include/linux/math64.h b/sys/compat/linuxkpi/common/include/linux/math64.h
index a216d350570f..25ca9da1b622 100644
--- a/sys/compat/linuxkpi/common/include/linux/math64.h
+++ b/sys/compat/linuxkpi/common/include/linux/math64.h
@@ -98,6 +98,12 @@ div64_u64_round_up(uint64_t dividend, uint64_t divisor)
 	return ((dividend + divisor - 1) / divisor);
 }
 
+static inline uint64_t
+roundup_u64(uint64_t x1, uint32_t x2)
+{
+	return (div_u64(x1 + x2 - 1, x2) * x2);
+}
+
 #define	DIV64_U64_ROUND_UP(...) \
 	div64_u64_round_up(__VA_ARGS__)