Merge branch 'zfsonlinux/merge-spl'

Merge a minimal version of the zfsonlinux/spl repository in to the
zfsonlinux/zfs repository.  Care was taken to prevent file conflicts
when merging and to preserve the spl repository history.  The spl
kernel module remains under the GPLv2 license as documented by the
additional THIRDPARTYLICENSE.gplv2 file.

Signed-off-by: Brian Behlendorf <[email protected]>

1 files changed, 228 insertions, 0 deletions

diff --git a/include/spl/sys/sysmacros.h b/include/spl/sys/sysmacros.h
new file mode 100644
index 000000000..839e7fd8c
--- /dev/null
+++ b/include/spl/sys/sysmacros.h
@@ -0,0 +1,228 @@
+/*
+ *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
+ *  Copyright (C) 2007 The Regents of the University of California.
+ *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
+ *  Written by Brian Behlendorf <[email protected]>.
+ *  UCRL-CODE-235197
+ *
+ *  This file is part of the SPL, Solaris Porting Layer.
+ *  For details, see <http://zfsonlinux.org/>.
+ *
+ *  The SPL is free software; you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License as published by the
+ *  Free Software Foundation; either version 2 of the License, or (at your
+ *  option) any later version.
+ *
+ *  The SPL is distributed in the hope that it will be useful, but WITHOUT
+ *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ *  for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _SPL_SYSMACROS_H
+#define	_SPL_SYSMACROS_H
+
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/cpumask.h>
+#include <sys/debug.h>
+#include <sys/zone.h>
+#include <sys/signal.h>
+#include <asm/page.h>
+
+#ifdef HAVE_SCHED_RT_HEADER
+#include <linux/sched/rt.h>
+#endif
+
+#ifndef _KERNEL
+#define	_KERNEL				__KERNEL__
+#endif
+
+#define	FALSE				0
+#define	TRUE				1
+
+#define	INT8_MAX			(127)
+#define	INT8_MIN			(-128)
+#define	UINT8_MAX			(255)
+#define	UINT8_MIN			(0)
+
+#define	INT16_MAX			(32767)
+#define	INT16_MIN			(-32768)
+#define	UINT16_MAX			(65535)
+#define	UINT16_MIN			(0)
+
+#define	INT32_MAX			INT_MAX
+#define	INT32_MIN			INT_MIN
+#define	UINT32_MAX			UINT_MAX
+#define	UINT32_MIN			UINT_MIN
+
+#define	INT64_MAX			LLONG_MAX
+#define	INT64_MIN			LLONG_MIN
+#define	UINT64_MAX			ULLONG_MAX
+#define	UINT64_MIN			ULLONG_MIN
+
+#define	NBBY				8
+
+#define	MAXMSGLEN			256
+#define	MAXNAMELEN			256
+#define	MAXPATHLEN			4096
+#define	MAXOFFSET_T			LLONG_MAX
+#define	MAXBSIZE			8192
+#define	DEV_BSIZE			512
+#define	DEV_BSHIFT			9 /* log2(DEV_BSIZE) */
+
+#define	proc_pageout			NULL
+#define	curproc				current
+#define	max_ncpus			num_possible_cpus()
+#define	boot_ncpus			num_online_cpus()
+#define	CPU_SEQID			smp_processor_id()
+#define	_NOTE(x)
+#define	is_system_labeled()		0
+
+#ifndef RLIM64_INFINITY
+#define	RLIM64_INFINITY			(~0ULL)
+#endif
+
+/*
+ * 0..MAX_PRIO-1:		Process priority
+ * 0..MAX_RT_PRIO-1:		RT priority tasks
+ * MAX_RT_PRIO..MAX_PRIO-1:	SCHED_NORMAL tasks
+ *
+ * Treat shim tasks as SCHED_NORMAL tasks
+ */
+#define	minclsyspri			(MAX_PRIO-1)
+#define	maxclsyspri			(MAX_RT_PRIO)
+#define	defclsyspri			(DEFAULT_PRIO)
+
+#ifndef NICE_TO_PRIO
+#define	NICE_TO_PRIO(nice)		(MAX_RT_PRIO + (nice) + 20)
+#endif
+#ifndef PRIO_TO_NICE
+#define	PRIO_TO_NICE(prio)		((prio) - MAX_RT_PRIO - 20)
+#endif
+
+/*
+ * Missing macros
+ */
+#ifndef PAGESIZE
+#define	PAGESIZE			PAGE_SIZE
+#endif
+
+#ifndef PAGESHIFT
+#define	PAGESHIFT			PAGE_SHIFT
+#endif
+
+/* Dtrace probes do not exist in the linux kernel */
+#ifdef DTRACE_PROBE
+#undef  DTRACE_PROBE
+#endif  /* DTRACE_PROBE */
+#define	DTRACE_PROBE(a)					((void)0)
+
+#ifdef DTRACE_PROBE1
+#undef  DTRACE_PROBE1
+#endif  /* DTRACE_PROBE1 */
+#define	DTRACE_PROBE1(a, b, c)				((void)0)
+
+#ifdef DTRACE_PROBE2
+#undef  DTRACE_PROBE2
+#endif  /* DTRACE_PROBE2 */
+#define	DTRACE_PROBE2(a, b, c, d, e)			((void)0)
+
+#ifdef DTRACE_PROBE3
+#undef  DTRACE_PROBE3
+#endif  /* DTRACE_PROBE3 */
+#define	DTRACE_PROBE3(a, b, c, d, e, f, g)		((void)0)
+
+#ifdef DTRACE_PROBE4
+#undef  DTRACE_PROBE4
+#endif  /* DTRACE_PROBE4 */
+#define	DTRACE_PROBE4(a, b, c, d, e, f, g, h, i)	((void)0)
+
+/* Missing globals */
+extern char spl_version[32];
+extern unsigned long spl_hostid;
+
+/* Missing misc functions */
+extern uint32_t zone_get_hostid(void *zone);
+extern void spl_setup(void);
+extern void spl_cleanup(void);
+
+#define	highbit(x)		__fls(x)
+#define	lowbit(x)		__ffs(x)
+
+#define	highbit64(x)		fls64(x)
+#define	makedevice(maj, min)	makedev(maj, min)
+
+/* common macros */
+#ifndef MIN
+#define	MIN(a, b)		((a) < (b) ? (a) : (b))
+#endif
+#ifndef MAX
+#define	MAX(a, b)		((a) < (b) ? (b) : (a))
+#endif
+#ifndef ABS
+#define	ABS(a)			((a) < 0 ? -(a) : (a))
+#endif
+#ifndef DIV_ROUND_UP
+#define	DIV_ROUND_UP(n, d)	(((n) + (d) - 1) / (d))
+#endif
+#ifndef roundup
+#define	roundup(x, y)		((((x) + ((y) - 1)) / (y)) * (y))
+#endif
+#ifndef howmany
+#define	howmany(x, y)		(((x) + ((y) - 1)) / (y))
+#endif
+
+/*
+ * Compatibility macros/typedefs needed for Solaris -> Linux port
+ */
+#define	P2ALIGN(x, align)	((x) & -(align))
+#define	P2CROSS(x, y, align)	(((x) ^ (y)) > (align) - 1)
+#define	P2ROUNDUP(x, align)	((((x) - 1) | ((align) - 1)) + 1)
+#define	P2PHASE(x, align)	((x) & ((align) - 1))
+#define	P2NPHASE(x, align)	(-(x) & ((align) - 1))
+#define	ISP2(x)			(((x) & ((x) - 1)) == 0)
+#define	IS_P2ALIGNED(v, a)	((((uintptr_t)(v)) & ((uintptr_t)(a) - 1)) == 0)
+#define	P2BOUNDARY(off, len, align) \
+				(((off) ^ ((off) + (len) - 1)) > (align) - 1)
+
+/*
+ * Typed version of the P2* macros.  These macros should be used to ensure
+ * that the result is correctly calculated based on the data type of (x),
+ * which is passed in as the last argument, regardless of the data
+ * type of the alignment.  For example, if (x) is of type uint64_t,
+ * and we want to round it up to a page boundary using "PAGESIZE" as
+ * the alignment, we can do either
+ *
+ * P2ROUNDUP(x, (uint64_t)PAGESIZE)
+ * or
+ * P2ROUNDUP_TYPED(x, PAGESIZE, uint64_t)
+ */
+#define	P2ALIGN_TYPED(x, align, type)   \
+	((type)(x) & -(type)(align))
+#define	P2PHASE_TYPED(x, align, type)   \
+	((type)(x) & ((type)(align) - 1))
+#define	P2NPHASE_TYPED(x, align, type)  \
+	(-(type)(x) & ((type)(align) - 1))
+#define	P2ROUNDUP_TYPED(x, align, type) \
+	((((type)(x) - 1) | ((type)(align) - 1)) + 1)
+#define	P2END_TYPED(x, align, type)     \
+	(-(~(type)(x) & -(type)(align)))
+#define	P2PHASEUP_TYPED(x, align, phase, type)  \
+	((type)(phase) - (((type)(phase) - (type)(x)) & -(type)(align)))
+#define	P2CROSS_TYPED(x, y, align, type)	\
+	(((type)(x) ^ (type)(y)) > (type)(align) - 1)
+#define	P2SAMEHIGHBIT_TYPED(x, y, type) \
+	(((type)(x) ^ (type)(y)) < ((type)(x) & (type)(y)))
+
+#if defined(_KERNEL) && !defined(_KMEMUSER) && !defined(offsetof)
+
+/* avoid any possibility of clashing with <stddef.h> version */
+
+#define	offsetof(s, m)  ((size_t)(&(((s *)0)->m)))
+#endif
+
+#endif  /* _SPL_SYSMACROS_H */