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mirror_zfs/spl_config.h.in

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* : Add autogen.sh products. * configure.ac : Use AC_CONFIG_AUX_DIR to put autoconf products in ./auotconf. * autogen.sh : Use --copy to avoid symlinks, remove error redirection, run aclocal before libtoolize. git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@180 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
2008-11-25 02:49:18 +03:00
/* spl_config.h.in. Generated from configure.ac by autoheader. */
/* Define to 1 to enable callb debugging */
#undef DEBUG_CALLB
/* Define to 1 to enable kmem debugging */
#undef DEBUG_KMEM
/* Define to 1 to enable kstat debugging */
#undef DEBUG_KSTAT
/* Define to 1 to enable mutex debugging */
#undef DEBUG_MUTEX
/* register_sysctl_table() wants 2 args */
#undef HAVE_2ARGS_REGISTER_SYSCTL
SLES10 Fixes (part 4): - Configure check for SLES specific API change to vfs_unlink() and vfs_rename() which added a 'struct vfsmount *' argument. This was for something called the linux-security-module, but it appears that it was never adopted upstream.
2009-05-20 22:31:55 +04:00
/* vfs_unlink() wants 2 args */
#undef HAVE_2ARGS_VFS_UNLINK
* : Add autogen.sh products. * configure.ac : Use AC_CONFIG_AUX_DIR to put autoconf products in ./auotconf. * autogen.sh : Use --copy to avoid symlinks, remove error redirection, run aclocal before libtoolize. git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@180 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
2008-11-25 02:49:18 +03:00
/* INIT_WORK wants 3 args */
#undef HAVE_3ARGS_INIT_WORK
2.6.27+ portability changes - Added SPL_AC_3ARGS_ON_EACH_CPU configure check to determine if the older 4 argument version of on_each_cpu() should be used or the new 3 argument version. The retry argument was dropped in the new API which was never used anyway. - Updated work queue compatibility wrappers. The old way this worked was to pass a data point when initialized the workqueue. The new API assumed the work item is embedding in a structure and we us container_of() to find that data pointer. - Updated skc->skc_flags to be an unsigned long which is now type checked in the bit operations. This silences the warnings. - Updated autogen products and splat tests accordingly
2009-02-03 02:12:30 +03:00
/* on_each_cpu wants 3 args */
#undef HAVE_3ARGS_ON_EACH_CPU
SLES10 Fixes (part 4): - Configure check for SLES specific API change to vfs_unlink() and vfs_rename() which added a 'struct vfsmount *' argument. This was for something called the linux-security-module, but it appears that it was never adopted upstream.
2009-05-20 22:31:55 +04:00
/* vfs_rename() wants 4 args */
#undef HAVE_4ARGS_VFS_RENAME
Added SPL_AC_5ARGS_DEVICE_CREATE autoconf configure check As of 2.6.27 kernels the device_create() API changed to include a private data argument. This check detects which version of device_create() function the kernel has and properly defines spl_device_create() to use the correct prototype.
2009-03-13 23:38:43 +03:00
/* device_create wants 5 args */
#undef HAVE_5ARGS_DEVICE_CREATE
* : Add autogen.sh products. * configure.ac : Use AC_CONFIG_AUX_DIR to put autoconf products in ./auotconf. * autogen.sh : Use --copy to avoid symlinks, remove error redirection, run aclocal before libtoolize. git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@180 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
2008-11-25 02:49:18 +03:00
/* kernel defines atomic64_t */
#undef HAVE_ATOMIC64_T
/* class_device_create() is available */
#undef HAVE_CLASS_DEVICE_CREATE
/* unnumbered sysctl support exists */
#undef HAVE_CTL_UNNUMBERED
/* device_create() is available */
#undef HAVE_DEVICE_CREATE
/* div64_64() is available */
#undef HAVE_DIV64_64
SLES10 Fixes (part 2): - Configure check, the div64_64() function was renamed to div64_u64() as of 2.6.26. - Configure check, the global_page_state() fuction was introduced in 2.6.18 kernels. The earlier 2.6.16 based SLES10 must not try and use it, thankfully get_zone_counts() is still available. - To simplify debugging poison all symbols aquired dynamically using spl_kallsyms_lookup_name() with SYMBOL_POISON. - Add console messages when the user mode helpers fail. - spl_kmem_init_globals() use bit shifts instead of division. - When the monotonic clock is unavailable __gethrtime() must perform the HZ division as an 'unsigned long long' because the SPL only implements __udivdi3(), and not __divdi3() for 'long long' division on 32-bit arches.
2009-05-20 21:08:37 +04:00
/* div64_u64() is available */
#undef HAVE_DIV64_U64
* : Add autogen.sh products. * configure.ac : Use AC_CONFIG_AUX_DIR to put autoconf products in ./auotconf. * autogen.sh : Use --copy to avoid symlinks, remove error redirection, run aclocal before libtoolize. git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@180 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
2008-11-25 02:49:18 +03:00
/* Define to 1 if you have the <dlfcn.h> header file. */
#undef HAVE_DLFCN_H
/* linux/fdtable.h exists */
#undef HAVE_FDTABLE_HEADER
/* files_fdtable() is available */
#undef HAVE_FILES_FDTABLE
Linux VM integration / device special files Support added to provide reasonable values for the global Solaris VM variables: minfree, desfree, lotsfree, needfree. These values are set to the sum of their per-zone linux counterparts which should be close enough for Solaris consumers. When a non-GPL app links against the SPL we cannot use the udev interfaces, which means non of the device special files are created. Because of this I had added a poor mans udev which cause the SPL to invoke an upcall and create the basic devices when a minor is registered. When a minor is unregistered we use the vnode interface to unlink the special file.
2009-02-05 02:15:41 +03:00
/* first_online_pgdat() is available */
#undef HAVE_FIRST_ONLINE_PGDAT
* : Add autogen.sh products. * configure.ac : Use AC_CONFIG_AUX_DIR to put autoconf products in ./auotconf. * autogen.sh : Use --copy to avoid symlinks, remove error redirection, run aclocal before libtoolize. git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@180 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
2008-11-25 02:49:18 +03:00
/* fls64() is available */
#undef HAVE_FLS64
Linux VM Integration Cleanup Remove all instances of functions being reimplemented in the SPL. When the prototypes are available in the linux headers but the function address itself is not exported use kallsyms_lookup_name() to find the address. The function name itself can them become a define which calls a function pointer. This is preferable to reimplementing the function in the SPL because it ensures we get the correct version of the function for the running kernel. This is actually pretty safe because the prototype is defined in the headers so we know we are calling the function properly. This patch also includes a rhel5 kernel patch we exports the needed symbols so we don't need to use kallsyms_lookup_name(). There are autoconf checks to detect if the symbol is exported and if so to use it directly. We should add patches for stock upstream kernels as needed if for no other reason than so we can easily track which additional symbols we needed exported. Those patches can also be used by anyone willing to rebuild their kernel, but this should not be a requirement. The rhel5 version of the export-symbols patch has been applied to the chaos kernel. Additional fixes: 1) Implement vmem_size() function using get_vmalloc_info() 2) SPL_CHECK_SYMBOL_EXPORT macro updated to use $LINUX_OBJ instead of $LINUX because Module.symvers is a build product. When $LINUX_OBJ != $LINUX we will not properly detect exported symbols. 3) SPL_LINUX_COMPILE_IFELSE macro updated to add include2 and $LINUX/include search paths to allow proper compilation when the kernel target build directory is not the source directory.
2009-02-26 00:20:40 +03:00
/* get_vmalloc_info() is available */
#undef HAVE_GET_VMALLOC_INFO
Additional Linux VM integration Added support for Solaris swapfs_minfree, and swapfs_reserve tunables. In additional availrmem is now available and return a reasonable value which is reasonably analogous to the Solaris meaning. On linux we return the sun of free and inactive pages since these are all easily reclaimable. All tunables are available in /proc/sys/kernel/spl/vm/* and they may need a little adjusting once we observe the real behavior. Some of the defaults are mapped to similar linux counterparts, others are straight from the OpenSolaris defaults.
2009-02-05 23:26:34 +03:00
/* get_zone_counts() is available */
#undef HAVE_GET_ZONE_COUNTS
SLES10 Fixes (part 2): - Configure check, the div64_64() function was renamed to div64_u64() as of 2.6.26. - Configure check, the global_page_state() fuction was introduced in 2.6.18 kernels. The earlier 2.6.16 based SLES10 must not try and use it, thankfully get_zone_counts() is still available. - To simplify debugging poison all symbols aquired dynamically using spl_kallsyms_lookup_name() with SYMBOL_POISON. - Add console messages when the user mode helpers fail. - spl_kmem_init_globals() use bit shifts instead of division. - When the monotonic clock is unavailable __gethrtime() must perform the HZ division as an 'unsigned long long' because the SPL only implements __udivdi3(), and not __divdi3() for 'long long' division on 32-bit arches.
2009-05-20 21:08:37 +04:00
/* global_page_state() is available */
#undef HAVE_GLOBAL_PAGE_STATE
* : Add autogen.sh products. * configure.ac : Use AC_CONFIG_AUX_DIR to put autoconf products in ./auotconf. * autogen.sh : Use --copy to avoid symlinks, remove error redirection, run aclocal before libtoolize. git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@180 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
2008-11-25 02:49:18 +03:00
/* init_utsname() is available */
#undef HAVE_INIT_UTSNAME
/* struct inode has i_mutex */
#undef HAVE_INODE_I_MUTEX
/* Define to 1 if you have the <inttypes.h> header file. */
#undef HAVE_INTTYPES_H
Linux VM Integration Cleanup Remove all instances of functions being reimplemented in the SPL. When the prototypes are available in the linux headers but the function address itself is not exported use kallsyms_lookup_name() to find the address. The function name itself can them become a define which calls a function pointer. This is preferable to reimplementing the function in the SPL because it ensures we get the correct version of the function for the running kernel. This is actually pretty safe because the prototype is defined in the headers so we know we are calling the function properly. This patch also includes a rhel5 kernel patch we exports the needed symbols so we don't need to use kallsyms_lookup_name(). There are autoconf checks to detect if the symbol is exported and if so to use it directly. We should add patches for stock upstream kernels as needed if for no other reason than so we can easily track which additional symbols we needed exported. Those patches can also be used by anyone willing to rebuild their kernel, but this should not be a requirement. The rhel5 version of the export-symbols patch has been applied to the chaos kernel. Additional fixes: 1) Implement vmem_size() function using get_vmalloc_info() 2) SPL_CHECK_SYMBOL_EXPORT macro updated to use $LINUX_OBJ instead of $LINUX because Module.symvers is a build product. When $LINUX_OBJ != $LINUX we will not properly detect exported symbols. 3) SPL_LINUX_COMPILE_IFELSE macro updated to add include2 and $LINUX/include search paths to allow proper compilation when the kernel target build directory is not the source directory.
2009-02-26 00:20:40 +03:00
/* kallsyms_lookup_name() is available */
#undef HAVE_KALLSYMS_LOOKUP_NAME
* : Add autogen.sh products. * configure.ac : Use AC_CONFIG_AUX_DIR to put autoconf products in ./auotconf. * autogen.sh : Use --copy to avoid symlinks, remove error redirection, run aclocal before libtoolize. git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@180 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
2008-11-25 02:49:18 +03:00
/* kmalloc_node() is available */
#undef HAVE_KMALLOC_NODE
/* Define to 1 if you have the <memory.h> header file. */
#undef HAVE_MEMORY_H
/* monotonic_clock() is available */
#undef HAVE_MONOTONIC_CLOCK
SLES10 Fixes (part 3): - Configure check for mutex_lock_nested(). This function was introduced as part of the mutex validator in 2.6.18, but if it's unavailable then it's safe to fallback to a plain mutex_lock().
2009-05-20 21:56:13 +04:00
/* mutex_lock_nested() is available */
#undef HAVE_MUTEX_LOCK_NESTED
Linux VM integration / device special files Support added to provide reasonable values for the global Solaris VM variables: minfree, desfree, lotsfree, needfree. These values are set to the sum of their per-zone linux counterparts which should be close enough for Solaris consumers. When a non-GPL app links against the SPL we cannot use the udev interfaces, which means non of the device special files are created. Because of this I had added a poor mans udev which cause the SPL to invoke an upcall and create the basic devices when a minor is registered. When a minor is unregistered we use the vnode interface to unlink the special file.
2009-02-05 02:15:41 +03:00
/* next_online_pgdat() is available */
#undef HAVE_NEXT_ONLINE_PGDAT
/* next_zone() is available */
#undef HAVE_NEXT_ZONE
* : Add autogen.sh products. * configure.ac : Use AC_CONFIG_AUX_DIR to put autoconf products in ./auotconf. * autogen.sh : Use --copy to avoid symlinks, remove error redirection, run aclocal before libtoolize. git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@180 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
2008-11-25 02:49:18 +03:00
/* struct path used in struct nameidata */
#undef HAVE_PATH_IN_NAMEIDATA
SLES10 Fixes (part 6) - Prior to 2.6.17 there were no *_pgdat helper functions in mm/mmzone.c. Instead for_each_zone() operated directly on pgdat_list which may or may not have been exported depending on how your kernel was compiled. Now new configure checks determine if you have the helpers or not, and if the needed symbols are exported. If they are not exported then they are dynamically aquired at runtime by kallsyms_lookup_name().
2009-05-21 01:23:13 +04:00
/* pgdat helpers are available */
#undef HAVE_PGDAT_HELPERS
/* pgdat_list is available */
#undef HAVE_PGDAT_LIST
* : Add autogen.sh products. * configure.ac : Use AC_CONFIG_AUX_DIR to put autoconf products in ./auotconf. * autogen.sh : Use --copy to avoid symlinks, remove error redirection, run aclocal before libtoolize. git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@180 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
2008-11-25 02:49:18 +03:00
/* set_normalized_timespec() is available as export */
#undef HAVE_SET_NORMALIZED_TIMESPEC_EXPORT
/* set_normalized_timespec() is available as inline */
#undef HAVE_SET_NORMALIZED_TIMESPEC_INLINE
/* set_shrinker() available */
#undef HAVE_SET_SHRINKER
/* Define to 1 if you have the <stdint.h> header file. */
#undef HAVE_STDINT_H
/* Define to 1 if you have the <stdlib.h> header file. */
#undef HAVE_STDLIB_H
/* Define to 1 if you have the <strings.h> header file. */
#undef HAVE_STRINGS_H
/* Define to 1 if you have the <string.h> header file. */
#undef HAVE_STRING_H
/* Define to 1 if you have the <sys/stat.h> header file. */
#undef HAVE_SYS_STAT_H
/* Define to 1 if you have the <sys/types.h> header file. */
#undef HAVE_SYS_TYPES_H
/* task_curr() exported */
#undef HAVE_TASK_CURR
/* timespec_sub() is available */
#undef HAVE_TIMESPEC_SUB
/* linux/uaccess.h exists */
#undef HAVE_UACCESS_HEADER
/* kernel defines uintptr_t */
#undef HAVE_UINTPTR_T
/* Define to 1 if you have the <unistd.h> header file. */
#undef HAVE_UNISTD_H
FC10/i686 Compatibility Update (2.6.27.19-170.2.35.fc10.i686) In the interests of portability I have added a FC10/i686 box to my list of development platforms. The hope is this will allow me to keep current with upstream kernel API changes, and at the same time ensure I don't accidentally break x86 support. This patch resolves all remaining issues observed under that environment. 1) SPL_AC_ZONE_STAT_ITEM_FIA autoconf check added. As of 2.6.21 the kernel added a clean API for modules to get the global count for free, inactive, and active pages. The SPL attempts to detect if this API is available and directly map spl_global_page_state() to global_page_state(). If the full API is not available then spl_global_page_state() is implemented as a thin layer to get these values via get_zone_counts() if that symbol is available. 2) New kmem:vmem_size regression test added to validate correct vmem_size() functionality. The test case acquires the current global vmem state, allocates from the vmem region, then verifies the allocation is correctly reflected in the vmem_size() stats. 3) Change splat_kmem_cache_thread_test() to always use KMC_KMEM based memory. On x86 systems with limited virtual address space failures resulted due to exhaustig the address space. The tests really need to problem exhausting all memory on the system thus we need to use the physical address space. 4) Change kmem:slab_lock to cap it's memory usage at availrmem instead of using the native linux nr_free_pages(). This provides additional test coverage of the SPL Linux VM integration. 5) Change kmem:slab_overcommit to perform allocation of 256K instead of 1M. On x86 based systems it is not possible to create a kmem backed slab with entires of that size. To compensate for this the number of allocations performed in increased by 4x. 6) Additional autoconf documentation for proposed upstream API changes to make additional symbols available to modules. 7) Console error messages added when spl_kallsyms_lookup_name() fails to locate an expected symbol. This causes the module to fail to load and we need to know exactly which symbol was not available.
2009-03-17 22:16:31 +03:00
/* free/inactive/active page state is available */
#undef HAVE_ZONE_STAT_ITEM_FIA
* : Add autogen.sh products. * configure.ac : Use AC_CONFIG_AUX_DIR to put autoconf products in ./auotconf. * autogen.sh : Use --copy to avoid symlinks, remove error redirection, run aclocal before libtoolize. git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@180 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
2008-11-25 02:49:18 +03:00
/* Name of package */
#undef PACKAGE
/* Define to the address where bug reports for this package should be sent. */
#undef PACKAGE_BUGREPORT
/* Define to the full name of this package. */
#undef PACKAGE_NAME
/* Define to the full name and version of this package. */
#undef PACKAGE_STRING
/* Define to the one symbol short name of this package. */
#undef PACKAGE_TARNAME
/* Define to the version of this package. */
#undef PACKAGE_VERSION
Prefix META_ALIAS with SPL_
2008-11-27 00:26:05 +03:00
/* Define the project alias string. */
#undef SPL_META_ALIAS
Prefix all META_* #defines with SPL to prevent colisions which include our spl_config.h. Dependent packages may do this to leverage the autoconf check we have already run aganst the kernel.
2008-11-27 00:09:37 +03:00
/* Define the project author. */
#undef SPL_META_AUTHOR
/* Define the project release date. */
#undef SPL_META_DATA
/* Define the libtool library 'age' version information. */
#undef SPL_META_LT_AGE
/* Define the libtool library 'current' version information. */
#undef SPL_META_LT_CURRENT
/* Define the libtool library 'revision' version information. */
#undef SPL_META_LT_REVISION
/* Define the project name. */
#undef SPL_META_NAME
/* Define the project release. */
#undef SPL_META_RELEASE
/* Define the project version. */
#undef SPL_META_VERSION
* : Add autogen.sh products. * configure.ac : Use AC_CONFIG_AUX_DIR to put autoconf products in ./auotconf. * autogen.sh : Use --copy to avoid symlinks, remove error redirection, run aclocal before libtoolize. git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@180 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
2008-11-25 02:49:18 +03:00
/* Define to 1 if you have the ANSI C header files. */
#undef STDC_HEADERS
/* Version number of package */
#undef VERSION
Build system cleanup 1) Undefine non-unique entries in spl_config.h 2) Minor Makefile cleanup 3) Don't use includedir for proper kernel header install
2009-03-10 20:57:52 +03:00
Allow spl_config.h to be included by dependant packages We need dependent packages to be able to include spl_config.h so they can leverage the configure checks the SPL has done. This is important because several of the spl headers need the results of these checks to work properly. Unfortunately, the autoheader build product is always private to a particular build and defined certain common things. (PACKAGE, VERSION, etc). This prevents other packages which also use autoheader from being include because the definitions conflict. To avoid this problem the SPL build system leverage AH_BOTTOM to include a spl_unconfig.h at the botton of the autoheader build product. This custom include undefs all known shared symbols to prevent the confict. This does however mean that those definition are also not availble to the SPL package either. The SPL package therefore uses the equivilant SPL_META_* definitions.
2009-03-18 00:55:59 +03:00
#include <spl_unconfig.h>
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