projects / mirror_zfs.git / blame
| Commit | Line | Data |
|---|---|---|
| 8e94ac0e | 1 | dnl # |
| 0c593296 | 2 | dnl # Handle differences in kernel FPU code. |
| fc0c72b1 | 3 | dnl # |
| 0c593296 | 4 | dnl # Kernel |
| 4d14a285 AF |
5 | dnl # 5.11: kernel_fpu_begin() is an inlined function now, so don't check |
| 6 | dnl # for it inside the kernel symbols. | |
| 7 | dnl # | |
| 10fa2545 | 8 | dnl # 5.0: Wrappers have been introduced to save/restore the FPU state. |
| e5db3134 | 9 | dnl # This change was made to the 4.19.38 and 4.14.120 LTS kernels. |
| 10fa2545 | 10 | dnl # HAVE_KERNEL_FPU_INTERNAL |
| 0c593296 TH |
11 | dnl # |
| 12 | dnl # 4.2: Use __kernel_fpu_{begin,end}() | |
| 13 | dnl # HAVE_UNDERSCORE_KERNEL_FPU & KERNEL_EXPORTS_X86_FPU | |
| 14 | dnl # | |
| 15 | dnl # Pre-4.2: Use kernel_fpu_{begin,end}() | |
| 16 | dnl # HAVE_KERNEL_FPU & KERNEL_EXPORTS_X86_FPU | |
| fc0c72b1 | 17 | dnl # |
| 608f8749 BB |
18 | dnl # N.B. The header check is performed before all other checks since it |
| 19 | dnl # depends on HAVE_KERNEL_FPU_API_HEADER being set in confdefs.h. | |
| 20 | dnl # | |
| 21 | AC_DEFUN([ZFS_AC_KERNEL_FPU_HEADER], [ | |
| 22 | AC_MSG_CHECKING([whether fpu headers are available]) | |
| fc0c72b1 | 23 | ZFS_LINUX_TRY_COMPILE([ |
| becdcec7 TH |
24 | #include <linux/module.h> |
| 25 | #include <asm/fpu/api.h> | |
| 26 | ],[ | |
| 27 | ],[ | |
| 8062b768 BB |
28 | AC_DEFINE(HAVE_KERNEL_FPU_API_HEADER, 1, |
| 29 | [kernel has asm/fpu/api.h]) | |
| becdcec7 TH |
30 | AC_MSG_RESULT(asm/fpu/api.h) |
| 31 | ],[ | |
| ce7a5dbf | 32 | AC_MSG_RESULT(i387.h) |
| becdcec7 | 33 | ]) |
| 608f8749 | 34 | ]) |
| becdcec7 | 35 | |
| 608f8749 BB |
36 | AC_DEFUN([ZFS_AC_KERNEL_SRC_FPU], [ |
| 37 | ZFS_LINUX_TEST_SRC([kernel_fpu], [ | |
| 10fa2545 | 38 | #include <linux/types.h> |
| becdcec7 TH |
39 | #ifdef HAVE_KERNEL_FPU_API_HEADER |
| 40 | #include <asm/fpu/api.h> | |
| ce7a5dbf | 41 | #include <asm/fpu/internal.h> |
| becdcec7 | 42 | #else |
| 0c593296 | 43 | #include <asm/i387.h> |
| becdcec7 | 44 | #endif |
| 608f8749 | 45 | ], [ |
| 0c593296 TH |
46 | kernel_fpu_begin(); |
| 47 | kernel_fpu_end(); | |
| c347fac5 | 48 | ], [], [ZFS_META_LICENSE]) |
| 608f8749 BB |
49 | |
| 50 | ZFS_LINUX_TEST_SRC([__kernel_fpu], [ | |
| 10fa2545 | 51 | #include <linux/types.h> |
| 608f8749 BB |
52 | #ifdef HAVE_KERNEL_FPU_API_HEADER |
| 53 | #include <asm/fpu/api.h> | |
| ce7a5dbf | 54 | #include <asm/fpu/internal.h> |
| 608f8749 BB |
55 | #else |
| 56 | #include <asm/i387.h> | |
| 608f8749 BB |
57 | #endif |
| 58 | ], [ | |
| 59 | __kernel_fpu_begin(); | |
| 60 | __kernel_fpu_end(); | |
| c347fac5 | 61 | ], [], [ZFS_META_LICENSE]) |
| 608f8749 | 62 | |
| 608f8749 BB |
63 | ]) |
| 64 | ||
| 65 | AC_DEFUN([ZFS_AC_KERNEL_FPU], [ | |
| 66 | dnl # | |
| 67 | dnl # Legacy kernel | |
| 68 | dnl # | |
| 69 | AC_MSG_CHECKING([whether kernel fpu is available]) | |
| 4d14a285 | 70 | ZFS_LINUX_TEST_RESULT([kernel_fpu_license], [ |
| 0c593296 | 71 | AC_MSG_RESULT(kernel_fpu_*) |
| 8062b768 BB |
72 | AC_DEFINE(HAVE_KERNEL_FPU, 1, |
| 73 | [kernel has kernel_fpu_* functions]) | |
| 74 | AC_DEFINE(KERNEL_EXPORTS_X86_FPU, 1, | |
| 75 | [kernel exports FPU functions]) | |
| fc0c72b1 | 76 | ],[ |
| 608f8749 BB |
77 | dnl # |
| 78 | dnl # Linux 4.2 kernel | |
| 79 | dnl # | |
| 80 | ZFS_LINUX_TEST_RESULT_SYMBOL([__kernel_fpu_license], | |
| 81 | [__kernel_fpu_begin], | |
| 82 | [arch/x86/kernel/fpu/core.c arch/x86/kernel/i387.c], [ | |
| 0c593296 | 83 | AC_MSG_RESULT(__kernel_fpu_*) |
| e5db3134 BB |
84 | AC_DEFINE(HAVE_UNDERSCORE_KERNEL_FPU, 1, |
| 85 | [kernel has __kernel_fpu_* functions]) | |
| 86 | AC_DEFINE(KERNEL_EXPORTS_X86_FPU, 1, | |
| 87 | [kernel exports FPU functions]) | |
| 0c593296 | 88 | ],[ |
| ce7a5dbf AF |
89 | AC_MSG_RESULT(internal) |
| 90 | AC_DEFINE(HAVE_KERNEL_FPU_INTERNAL, 1, | |
| 91 | [kernel fpu internal]) | |
| 0c593296 | 92 | ]) |
| fc0c72b1 GN |
93 | ]) |
| 94 | ]) |