projects / mirror_zfs.git / blame
| Commit | Line | Data |
|---|---|---|
| 0c593296 TH |
1 | dnl # |
| 2 | dnl # Handle differences in kernel FPU code. | |
| fc0c72b1 | 3 | dnl # |
| 0c593296 TH |
4 | dnl # Kernel |
| 5 | dnl # 5.0: All kernel fpu functions are GPL only, so we can't use them. | |
| 6 | dnl # (nothing defined) | |
| 7 | dnl # | |
| 8 | dnl # 4.2: Use __kernel_fpu_{begin,end}() | |
| 9 | dnl # HAVE_UNDERSCORE_KERNEL_FPU & KERNEL_EXPORTS_X86_FPU | |
| 10 | dnl # | |
| 11 | dnl # Pre-4.2: Use kernel_fpu_{begin,end}() | |
| 12 | dnl # HAVE_KERNEL_FPU & KERNEL_EXPORTS_X86_FPU | |
| fc0c72b1 GN |
13 | dnl # |
| 14 | AC_DEFUN([ZFS_AC_KERNEL_FPU], [ | |
| becdcec7 | 15 | AC_MSG_CHECKING([which kernel_fpu header to use]) |
| fc0c72b1 | 16 | ZFS_LINUX_TRY_COMPILE([ |
| becdcec7 TH |
17 | #include <linux/module.h> |
| 18 | #include <asm/fpu/api.h> | |
| 19 | ],[ | |
| 20 | ],[ | |
| 21 | AC_DEFINE(HAVE_KERNEL_FPU_API_HEADER, 1, [kernel has asm/fpu/api.h]) | |
| 22 | AC_MSG_RESULT(asm/fpu/api.h) | |
| 23 | ],[ | |
| 24 | AC_MSG_RESULT(i387.h & xcr.h) | |
| 25 | ]) | |
| 26 | ||
| 27 | AC_MSG_CHECKING([which kernel_fpu function to use]) | |
| 28 | ZFS_LINUX_TRY_COMPILE_SYMBOL([ | |
| 29 | #include <linux/module.h> | |
| 30 | #ifdef HAVE_KERNEL_FPU_API_HEADER | |
| 31 | #include <asm/fpu/api.h> | |
| 32 | #else | |
| 0c593296 TH |
33 | #include <asm/i387.h> |
| 34 | #include <asm/xcr.h> | |
| becdcec7 TH |
35 | #endif |
| 36 | MODULE_LICENSE("$ZFS_META_LICENSE"); | |
| fc0c72b1 | 37 | ],[ |
| 0c593296 TH |
38 | kernel_fpu_begin(); |
| 39 | kernel_fpu_end(); | |
| becdcec7 | 40 | ], [kernel_fpu_begin], [arch/x86/kernel/fpu/core.c], [ |
| 0c593296 TH |
41 | AC_MSG_RESULT(kernel_fpu_*) |
| 42 | AC_DEFINE(HAVE_KERNEL_FPU, 1, [kernel has kernel_fpu_* functions]) | |
| 43 | AC_DEFINE(KERNEL_EXPORTS_X86_FPU, 1, [kernel exports FPU functions]) | |
| fc0c72b1 | 44 | ],[ |
| becdcec7 TH |
45 | ZFS_LINUX_TRY_COMPILE_SYMBOL([ |
| 46 | #include <linux/module.h> | |
| 47 | #ifdef HAVE_KERNEL_FPU_API_HEADER | |
| 0c593296 | 48 | #include <asm/fpu/api.h> |
| becdcec7 TH |
49 | #else |
| 50 | #include <asm/i387.h> | |
| 51 | #include <asm/xcr.h> | |
| 52 | #endif | |
| 53 | MODULE_LICENSE("$ZFS_META_LICENSE"); | |
| 0c593296 TH |
54 | ],[ |
| 55 | __kernel_fpu_begin(); | |
| 56 | __kernel_fpu_end(); | |
| becdcec7 | 57 | ], [__kernel_fpu_begin], [arch/x86/kernel/fpu/core.c arch/x86/kernel/i387.c], [ |
| 0c593296 TH |
58 | AC_MSG_RESULT(__kernel_fpu_*) |
| 59 | AC_DEFINE(HAVE_UNDERSCORE_KERNEL_FPU, 1, [kernel has __kernel_fpu_* functions]) | |
| 60 | AC_DEFINE(KERNEL_EXPORTS_X86_FPU, 1, [kernel exports FPU functions]) | |
| 61 | ],[ | |
| 62 | AC_MSG_RESULT(not exported) | |
| 63 | ]) | |
| fc0c72b1 GN |
64 | ]) |
| 65 | ]) |