svn commit: r345102 - head/sys/compat/linuxkpi/common/include/linux

[Hans Petter Selasky]

Author: hselasky
Date: Wed Mar 13 19:04:06 2019
New Revision: 345102
URL: https://svnweb.freebsd.org/changeset/base/345102

Log:
  Implement IS_ALIGNED() and DIV_ROUND_DOWN_ULL() function macros in the LinuxKPI.
  
  Submitted by:		Johannes Lundberg <johalun0 at gmail.com>
  MFC after:		1 week
  Sponsored by:		Limelight Networks
  Sponsored by:		Mellanox Technologies

Modified:
  head/sys/compat/linuxkpi/common/include/linux/kernel.h

Modified: head/sys/compat/linuxkpi/common/include/linux/kernel.h
==============================================================================
--- head/sys/compat/linuxkpi/common/include/linux/kernel.h	Wed Mar 13 19:01:55 2019	(r345101)
+++ head/sys/compat/linuxkpi/common/include/linux/kernel.h	Wed Mar 13 19:04:06 2019	(r345102)
@@ -130,9 +130,11 @@
 #define	ALIGN(x, y)		roundup2((x), (y))
 #undef PTR_ALIGN
 #define	PTR_ALIGN(p, a)		((__typeof(p))ALIGN((uintptr_t)(p), (a)))
+#define	IS_ALIGNED(x, a)	(((x) & ((__typeof(x))(a) - 1)) == 0)
 #define	DIV_ROUND_UP(x, n)	howmany(x, n)
 #define	__KERNEL_DIV_ROUND_UP(x, n)	howmany(x, n)
 #define	DIV_ROUND_UP_ULL(x, n)	DIV_ROUND_UP((unsigned long long)(x), (n))
+#define	DIV_ROUND_DOWN_ULL(x, n) (((unsigned long long)(x) / (n)) * (n))
 #define	FIELD_SIZEOF(t, f)	sizeof(((t *)0)->f)
 
 #define	printk(...)		printf(__VA_ARGS__)