Author: johalun
Date: Wed May 15 17:57:06 2019
New Revision: 347626
URL: https://svnweb.freebsd.org/changeset/base/347626

Log:
  LinuxKPI: Add helper macros IS_ALIGNED and DIV_ROUND_DOWN_ULL.
  
  This patch is part of D19565
  
  Reviewed by:  hps
  Approved by:  imp (mentor), hps
  MFC after:    1 week

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 May 15 
17:55:41 2019        (r347625)
+++ head/sys/compat/linuxkpi/common/include/linux/kernel.h      Wed May 15 
17:57:06 2019        (r347626)
@@ -130,9 +130,14 @@
 #define        ALIGN(x, y)             roundup2((x), (y))
 #undef PTR_ALIGN
 #define        PTR_ALIGN(p, a)         ((__typeof(p))ALIGN((uintptr_t)(p), 
(a)))
+#if defined(LINUXKPI_VERSION) && LINUXKPI_VERSION >= 50000
+/* Moved from linuxkpi_gplv2 */
+#define        IS_ALIGNED(x, a)        (((x) & ((__typeof(x))(a) - 1)) == 0)
+#endif
 #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__)
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