include: add cached copy of linux/kernel.h

This fixes the following compilation warning when compiling with old
kernel headers.

  CC     expr/target.lo
expr/target.c: In function ‘nft_rule_expr_target_build’:
expr/target.c:127: warning: implicit declaration of function ‘__ALIGN_KERNEL’

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
new file mode 100644 (file)
index 0000000..d4c59f6
--- /dev/null
+++ b/include/linux/kernel.h
@@ -0,0 +1,29 @@
+#ifndef _LINUX_KERNEL_H
+#define _LINUX_KERNEL_H
+
+/*
+ * 'kernel.h' contains some often-used function prototypes etc
+ */
+#define __ALIGN_KERNEL(x, a)           __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
+#define __ALIGN_KERNEL_MASK(x, mask)   (((x) + (mask)) & ~(mask))
+
+
+#define SI_LOAD_SHIFT  16
+struct sysinfo {
+       long uptime;                    /* Seconds since boot */
+       unsigned long loads[3];         /* 1, 5, and 15 minute load averages */
+       unsigned long totalram;         /* Total usable main memory size */
+       unsigned long freeram;          /* Available memory size */
+       unsigned long sharedram;        /* Amount of shared memory */
+       unsigned long bufferram;        /* Memory used by buffers */
+       unsigned long totalswap;        /* Total swap space size */
+       unsigned long freeswap;         /* swap space still available */
+       unsigned short procs;           /* Number of current processes */
+       unsigned short pad;             /* explicit padding for m68k */
+       unsigned long totalhigh;        /* Total high memory size */
+       unsigned long freehigh;         /* Available high memory size */
+       unsigned int mem_unit;          /* Memory unit size in bytes */
+       char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */
+};
+
+#endif