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zfs/config/kernel-config-defined.m4

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Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341
2019-10-01 19:50:34 +00:00
dnl #
dnl # Certain kernel build options are not supported. These must be
dnl # detected at configure time and cause a build failure. Otherwise
dnl # modules may be successfully built that behave incorrectly.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_CONFIG_DEFINED], [
AS_IF([test "x$cross_compiling" != xyes], [
AC_RUN_IFELSE([
AC_LANG_PROGRAM([
#include "$LINUX/include/linux/license.h"
], [
return !license_is_gpl_compatible(
"$ZFS_META_LICENSE");
])
], [
AC_DEFINE([ZFS_IS_GPL_COMPATIBLE], [1],
[Define to 1 if GPL-only symbols can be used])
], [
])
])
autoconf: Pretend `CONFIG_MODULES` is always on - Unconditionally inject `CONFIG_MODULES` make variable and `#define CONFIG_MODULES` to Kbuild in `ZFS_LINUX_COMPILE` autoconf function to emulate loadable kernel modules support. This allows OpenZFS to perform Linux checks despite `CONFIG_MODULES=n` in the actual Linux config. - Add `ZFS_AC_KERNEL_CONFIG_MODULES` check which encompasses the logic from `ZFS_AC_KERNEL_TEST_MODULE` with additional diagnostic messages to the user - Removed `ZFS_AC_KERNEL_TEST_MODULE` as it merely duplicates every check in `ZFS_AC_KERNEL_CONFIG_DEFINED` - Moved `ZFS_AC_MODULE_SYMVERS` after `ZFS_AC_KERNEL_CONFIG_DEFINED` so the user has a chance to see the proper diagnostic from the steps before. A workaround for Linux's ``` commit 3e3005df73b535cb849cf4ec8075d6aa3c460f68 Author: Masahiro Yamada <masahiroy@kernel.org> Date: Wed Mar 31 22:38:03 2021 +0900 kbuild: unify modules(_install) for in-tree and external modules If you attempt to build or install modules ('make modules(_install)' with CONFIG_MODULES disabled, you will get a clear error message, but nothing for external module builds. Factor out the modules and modules_install rules into the common part, so you will get the same error message when you try to build external modules with CONFIG_MODULES=n. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> ``` Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: szubersk <szuberskidamian@gmail.com> Closes #10832 Closes #13361
2022-04-26 17:47:09 +00:00
ZFS_AC_KERNEL_SRC_CONFIG_MODULES
Strengthen Linux kernel capabilities detection - Add `CONFIG_BLOCK` Linux config requirement to `ZFS_AC_KERNEL_CONFIG_DEFINED`. OpenZFS won't compile without that block device support due to large amount of functional dependencies on it. - Remove dependency on `groups_alloc()` in `ZFS_AC_KERNEL_SRC_GROUP_INFO_GID` to circumvent the missing stub in Linux 4.X kernel headers. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: szubersk <szuberskidamian@gmail.com> Closes #13351
2022-04-21 16:37:11 +00:00
ZFS_AC_KERNEL_SRC_CONFIG_BLOCK
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341
2019-10-01 19:50:34 +00:00
ZFS_AC_KERNEL_SRC_CONFIG_DEBUG_LOCK_ALLOC
ZFS_AC_KERNEL_SRC_CONFIG_TRIM_UNUSED_KSYMS
ZFS_AC_KERNEL_SRC_CONFIG_ZLIB_DEFLATE
Strengthen Linux kernel capabilities detection - Add `CONFIG_BLOCK` Linux config requirement to `ZFS_AC_KERNEL_CONFIG_DEFINED`. OpenZFS won't compile without that block device support due to large amount of functional dependencies on it. - Remove dependency on `groups_alloc()` in `ZFS_AC_KERNEL_SRC_GROUP_INFO_GID` to circumvent the missing stub in Linux 4.X kernel headers. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: szubersk <szuberskidamian@gmail.com> Closes #13351
2022-04-21 16:37:11 +00:00
ZFS_AC_KERNEL_SRC_CONFIG_ZLIB_INFLATE
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341
2019-10-01 19:50:34 +00:00
AC_MSG_CHECKING([for kernel config option compatibility])
ZFS_LINUX_TEST_COMPILE_ALL([config])
AC_MSG_RESULT([done])
autoconf: Pretend `CONFIG_MODULES` is always on - Unconditionally inject `CONFIG_MODULES` make variable and `#define CONFIG_MODULES` to Kbuild in `ZFS_LINUX_COMPILE` autoconf function to emulate loadable kernel modules support. This allows OpenZFS to perform Linux checks despite `CONFIG_MODULES=n` in the actual Linux config. - Add `ZFS_AC_KERNEL_CONFIG_MODULES` check which encompasses the logic from `ZFS_AC_KERNEL_TEST_MODULE` with additional diagnostic messages to the user - Removed `ZFS_AC_KERNEL_TEST_MODULE` as it merely duplicates every check in `ZFS_AC_KERNEL_CONFIG_DEFINED` - Moved `ZFS_AC_MODULE_SYMVERS` after `ZFS_AC_KERNEL_CONFIG_DEFINED` so the user has a chance to see the proper diagnostic from the steps before. A workaround for Linux's ``` commit 3e3005df73b535cb849cf4ec8075d6aa3c460f68 Author: Masahiro Yamada <masahiroy@kernel.org> Date: Wed Mar 31 22:38:03 2021 +0900 kbuild: unify modules(_install) for in-tree and external modules If you attempt to build or install modules ('make modules(_install)' with CONFIG_MODULES disabled, you will get a clear error message, but nothing for external module builds. Factor out the modules and modules_install rules into the common part, so you will get the same error message when you try to build external modules with CONFIG_MODULES=n. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> ``` Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: szubersk <szuberskidamian@gmail.com> Closes #10832 Closes #13361
2022-04-26 17:47:09 +00:00
ZFS_AC_KERNEL_CONFIG_MODULES
Strengthen Linux kernel capabilities detection - Add `CONFIG_BLOCK` Linux config requirement to `ZFS_AC_KERNEL_CONFIG_DEFINED`. OpenZFS won't compile without that block device support due to large amount of functional dependencies on it. - Remove dependency on `groups_alloc()` in `ZFS_AC_KERNEL_SRC_GROUP_INFO_GID` to circumvent the missing stub in Linux 4.X kernel headers. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: szubersk <szuberskidamian@gmail.com> Closes #13351
2022-04-21 16:37:11 +00:00
ZFS_AC_KERNEL_CONFIG_BLOCK
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341
2019-10-01 19:50:34 +00:00
ZFS_AC_KERNEL_CONFIG_DEBUG_LOCK_ALLOC
ZFS_AC_KERNEL_CONFIG_TRIM_UNUSED_KSYMS
ZFS_AC_KERNEL_CONFIG_ZLIB_DEFLATE
Strengthen Linux kernel capabilities detection - Add `CONFIG_BLOCK` Linux config requirement to `ZFS_AC_KERNEL_CONFIG_DEFINED`. OpenZFS won't compile without that block device support due to large amount of functional dependencies on it. - Remove dependency on `groups_alloc()` in `ZFS_AC_KERNEL_SRC_GROUP_INFO_GID` to circumvent the missing stub in Linux 4.X kernel headers. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: szubersk <szuberskidamian@gmail.com> Closes #13351
2022-04-21 16:37:11 +00:00
ZFS_AC_KERNEL_CONFIG_ZLIB_INFLATE
])
dnl #
dnl # Check CONFIG_BLOCK
dnl #
dnl # Verify the kernel has CONFIG_BLOCK support enabled.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_CONFIG_BLOCK], [
ZFS_LINUX_TEST_SRC([config_block], [
#if !defined(CONFIG_BLOCK)
#error CONFIG_BLOCK not defined
#endif
],[])
])
AC_DEFUN([ZFS_AC_KERNEL_CONFIG_BLOCK], [
AC_MSG_CHECKING([whether CONFIG_BLOCK is defined])
ZFS_LINUX_TEST_RESULT([config_block], [
AC_MSG_RESULT([yes])
],[
AC_MSG_RESULT([no])
AC_MSG_ERROR([
*** This kernel does not include the required block device support.
*** Rebuild the kernel with CONFIG_BLOCK=y set.])
])
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341
2019-10-01 19:50:34 +00:00
])
dnl #
dnl # Check CONFIG_DEBUG_LOCK_ALLOC
dnl #
dnl # This is typically only set for debug kernels because it comes with
dnl # a performance penalty. However, when it is set it maps the non-GPL
dnl # symbol mutex_lock() to the GPL-only mutex_lock_nested() symbol.
dnl # This will cause a failure at link time which we'd rather know about
dnl # at compile time.
dnl #
dnl # Since we plan to pursue making mutex_lock_nested() a non-GPL symbol
dnl # with the upstream community we add a check to detect this case.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_CONFIG_DEBUG_LOCK_ALLOC], [
ZFS_LINUX_TEST_SRC([config_debug_lock_alloc], [
#include <linux/mutex.h>
],[
struct mutex lock;
mutex_init(&lock);
mutex_lock(&lock);
mutex_unlock(&lock);
Linux 5.11 compat: conftest Update the ZFS_LINUX_TEST_PROGRAM macro to always set the module license. As of the 5.11 kernel not setting a license has been converted from a warning to an error. Reviewed-by: Rafael Kitover <rkitover@gmail.com> Reviewed-by: Coleman Kane <ckane@colemankane.org> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #11387 Closes #11390
2020-12-23 19:40:02 +00:00
], [], [ZFS_META_LICENSE])
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341
2019-10-01 19:50:34 +00:00
])
AC_DEFUN([ZFS_AC_KERNEL_CONFIG_DEBUG_LOCK_ALLOC], [
AC_MSG_CHECKING([whether mutex_lock() is GPL-only])
Fix CONFIG_DEBUG_LOCK_ALLOC configure check This check was accidentally broken when the kABI checks were updated to run in parallel, commit 608f874. The check must be for the config_debug_lock_alloc_license name to determine if the symbol is license compatible. Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #10991
2020-09-28 23:42:54 +00:00
ZFS_LINUX_TEST_RESULT([config_debug_lock_alloc_license], [
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341
2019-10-01 19:50:34 +00:00
AC_MSG_RESULT(no)
],[
AC_MSG_RESULT(yes)
AC_MSG_ERROR([
*** Kernel built with CONFIG_DEBUG_LOCK_ALLOC which is incompatible
*** with the CDDL license and will prevent the module linking stage
*** from succeeding. You must rebuild your kernel without this
*** option enabled.])
])
])
autoconf: Pretend `CONFIG_MODULES` is always on - Unconditionally inject `CONFIG_MODULES` make variable and `#define CONFIG_MODULES` to Kbuild in `ZFS_LINUX_COMPILE` autoconf function to emulate loadable kernel modules support. This allows OpenZFS to perform Linux checks despite `CONFIG_MODULES=n` in the actual Linux config. - Add `ZFS_AC_KERNEL_CONFIG_MODULES` check which encompasses the logic from `ZFS_AC_KERNEL_TEST_MODULE` with additional diagnostic messages to the user - Removed `ZFS_AC_KERNEL_TEST_MODULE` as it merely duplicates every check in `ZFS_AC_KERNEL_CONFIG_DEFINED` - Moved `ZFS_AC_MODULE_SYMVERS` after `ZFS_AC_KERNEL_CONFIG_DEFINED` so the user has a chance to see the proper diagnostic from the steps before. A workaround for Linux's ``` commit 3e3005df73b535cb849cf4ec8075d6aa3c460f68 Author: Masahiro Yamada <masahiroy@kernel.org> Date: Wed Mar 31 22:38:03 2021 +0900 kbuild: unify modules(_install) for in-tree and external modules If you attempt to build or install modules ('make modules(_install)' with CONFIG_MODULES disabled, you will get a clear error message, but nothing for external module builds. Factor out the modules and modules_install rules into the common part, so you will get the same error message when you try to build external modules with CONFIG_MODULES=n. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> ``` Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: szubersk <szuberskidamian@gmail.com> Closes #10832 Closes #13361
2022-04-26 17:47:09 +00:00
dnl #
dnl # Check CONFIG_MODULES
dnl #
dnl # Verify the kernel has CONFIG_MODULES support enabled.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_CONFIG_MODULES], [
ZFS_LINUX_TEST_SRC([config_modules], [
#if !defined(CONFIG_MODULES)
#error CONFIG_MODULES not defined
#endif
],[])
])
AC_DEFUN([ZFS_AC_KERNEL_CONFIG_MODULES], [
AC_MSG_CHECKING([whether CONFIG_MODULES is defined])
AS_IF([test "x$enable_linux_builtin" != xyes], [
ZFS_LINUX_TEST_RESULT([config_modules], [
AC_MSG_RESULT([yes])
],[
AC_MSG_RESULT([no])
AC_MSG_ERROR([
*** This kernel does not include the required loadable module
*** support!
***
*** To build OpenZFS as a loadable Linux kernel module
*** enable loadable module support by setting
*** `CONFIG_MODULES=y` in the kernel configuration and run
*** `make modules_prepare` in the Linux source tree.
***
*** If you don't intend to enable loadable kernel module
*** support, please compile OpenZFS as a Linux kernel built-in.
***
*** Prepare the Linux source tree by running `make prepare`,
*** use the OpenZFS `--enable-linux-builtin` configure option,
*** copy the OpenZFS sources into the Linux source tree using
*** `./copy-builtin <linux source directory>`,
*** set `CONFIG_ZFS=y` in the kernel configuration and compile
*** kernel as usual.
])
])
], [
ZFS_LINUX_TRY_COMPILE([], [], [
AC_MSG_RESULT([not needed])
],[
AC_MSG_RESULT([error])
AC_MSG_ERROR([
*** This kernel is unable to compile object files.
***
*** Please make sure you prepared the Linux source tree
*** by running `make prepare` there.
])
])
])
])
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341
2019-10-01 19:50:34 +00:00
dnl #
dnl # Check CONFIG_TRIM_UNUSED_KSYMS
dnl #
dnl # Verify the kernel has CONFIG_TRIM_UNUSED_KSYMS disabled.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_CONFIG_TRIM_UNUSED_KSYMS], [
ZFS_LINUX_TEST_SRC([config_trim_unusued_ksyms], [
#if defined(CONFIG_TRIM_UNUSED_KSYMS)
#error CONFIG_TRIM_UNUSED_KSYMS not defined
#endif
],[])
])
AC_DEFUN([ZFS_AC_KERNEL_CONFIG_TRIM_UNUSED_KSYMS], [
AC_MSG_CHECKING([whether CONFIG_TRIM_UNUSED_KSYM is disabled])
ZFS_LINUX_TEST_RESULT([config_trim_unusued_ksyms], [
AC_MSG_RESULT([yes])
],[
AC_MSG_RESULT([no])
AS_IF([test "x$enable_linux_builtin" != xyes], [
AC_MSG_ERROR([
*** This kernel has unused symbols trimming enabled, please disable.
*** Rebuild the kernel with CONFIG_TRIM_UNUSED_KSYMS=n set.])
])
])
])
dnl #
dnl # Check CONFIG_ZLIB_INFLATE
dnl #
dnl # Verify the kernel has CONFIG_ZLIB_INFLATE support enabled.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_CONFIG_ZLIB_INFLATE], [
ZFS_LINUX_TEST_SRC([config_zlib_inflate], [
#if !defined(CONFIG_ZLIB_INFLATE) && \
!defined(CONFIG_ZLIB_INFLATE_MODULE)
#error CONFIG_ZLIB_INFLATE not defined
#endif
],[])
])
AC_DEFUN([ZFS_AC_KERNEL_CONFIG_ZLIB_INFLATE], [
AC_MSG_CHECKING([whether CONFIG_ZLIB_INFLATE is defined])
ZFS_LINUX_TEST_RESULT([config_zlib_inflate], [
AC_MSG_RESULT([yes])
],[
AC_MSG_RESULT([no])
AC_MSG_ERROR([
*** This kernel does not include the required zlib inflate support.
*** Rebuild the kernel with CONFIG_ZLIB_INFLATE=y|m set.])
])
])
dnl #
dnl # Check CONFIG_ZLIB_DEFLATE
dnl #
dnl # Verify the kernel has CONFIG_ZLIB_DEFLATE support enabled.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_CONFIG_ZLIB_DEFLATE], [
ZFS_LINUX_TEST_SRC([config_zlib_deflate], [
#if !defined(CONFIG_ZLIB_DEFLATE) && \
!defined(CONFIG_ZLIB_DEFLATE_MODULE)
#error CONFIG_ZLIB_DEFLATE not defined
#endif
],[])
])
AC_DEFUN([ZFS_AC_KERNEL_CONFIG_ZLIB_DEFLATE], [
AC_MSG_CHECKING([whether CONFIG_ZLIB_DEFLATE is defined])
ZFS_LINUX_TEST_RESULT([config_zlib_deflate], [
AC_MSG_RESULT([yes])
],[
AC_MSG_RESULT([no])
AC_MSG_ERROR([
*** This kernel does not include the required zlib deflate support.
*** Rebuild the kernel with CONFIG_ZLIB_DEFLATE=y|m set.])
])
])