projects / mirror_spl-debian.git / blame
| Commit | Line | Data |
|---|---|---|
| 34ee731f AX |
1 | dnl # |
| 2 | dnl # 3.1 API Change | |
| 3 | dnl # | |
| 4 | dnl # The rw_semaphore.wait_lock member was changed from spinlock_t to | |
| 5 | dnl # raw_spinlock_t at commit ddb6c9b58a19edcfac93ac670b066c836ff729f1. | |
| 6 | dnl # | |
| 7 | AC_DEFUN([SPL_AC_RWSEM_SPINLOCK_IS_RAW], [ | |
| 8 | AC_MSG_CHECKING([whether struct rw_semaphore member wait_lock is raw]) | |
| 9 | tmp_flags="$EXTRA_KCFLAGS" | |
| 10 | EXTRA_KCFLAGS="-Werror" | |
| 11 | SPL_LINUX_TRY_COMPILE([ | |
| 12 | #include <linux/rwsem.h> | |
| 13 | ],[ | |
| 14 | struct rw_semaphore dummy_semaphore __attribute__ ((unused)); | |
| 15 | raw_spinlock_t dummy_lock __attribute__ ((unused)) = | |
| 16 | __RAW_SPIN_LOCK_INITIALIZER(dummy_lock); | |
| 17 | dummy_semaphore.wait_lock = dummy_lock; | |
| 18 | ],[ | |
| 19 | AC_MSG_RESULT(yes) | |
| 20 | AC_DEFINE(RWSEM_SPINLOCK_IS_RAW, 1, | |
| 21 | [struct rw_semaphore member wait_lock is raw_spinlock_t]) | |
| 22 | ],[ | |
| 23 | AC_MSG_RESULT(no) | |
| 24 | ]) | |
| 25 | EXTRA_KCFLAGS="$tmp_flags" | |
| 26 | ]) | |
| 27 | ||
| 28 | dnl # | |
| 29 | dnl # 3.16 API Change | |
| 30 | dnl # | |
| 31 | dnl # rwsem-spinlock "->activity" changed to "->count" | |
| 32 | dnl # | |
| 33 | AC_DEFUN([SPL_AC_RWSEM_ACTIVITY], [ | |
| 34 | AC_MSG_CHECKING([whether struct rw_semaphore has member activity]) | |
| 35 | tmp_flags="$EXTRA_KCFLAGS" | |
| 36 | EXTRA_KCFLAGS="-Werror" | |
| 37 | SPL_LINUX_TRY_COMPILE([ | |
| 38 | #include <linux/rwsem.h> | |
| 39 | ],[ | |
| 40 | struct rw_semaphore dummy_semaphore __attribute__ ((unused)); | |
| 41 | dummy_semaphore.activity = 0; | |
| 42 | ],[ | |
| 43 | AC_MSG_RESULT(yes) | |
| 44 | AC_DEFINE(HAVE_RWSEM_ACTIVITY, 1, | |
| 45 | [struct rw_semaphore has member activity]) | |
| 46 | ],[ | |
| 47 | AC_MSG_RESULT(no) | |
| 48 | ]) | |
| 49 | EXTRA_KCFLAGS="$tmp_flags" | |
| 50 | ]) | |
| 51 | ||
| 52 | dnl # | |
| 53 | dnl # 4.8 API Change | |
| 54 | dnl # | |
| 55 | dnl # rwsem "->count" changed to atomic_long_t type | |
| 56 | dnl # | |
| 57 | AC_DEFUN([SPL_AC_RWSEM_ATOMIC_LONG_COUNT], [ | |
| 58 | AC_MSG_CHECKING( | |
| 59 | [whether struct rw_semaphore has atomic_long_t member count]) | |
| 60 | tmp_flags="$EXTRA_KCFLAGS" | |
| 61 | EXTRA_KCFLAGS="-Werror" | |
| 62 | SPL_LINUX_TRY_COMPILE([ | |
| 63 | #include <linux/rwsem.h> | |
| 64 | ],[ | |
| 65 | DECLARE_RWSEM(dummy_semaphore); | |
| 66 | (void) atomic_long_read(&dummy_semaphore.count); | |
| 67 | ],[ | |
| 68 | AC_MSG_RESULT(yes) | |
| 69 | AC_DEFINE(HAVE_RWSEM_ATOMIC_LONG_COUNT, 1, | |
| 70 | [struct rw_semaphore has atomic_long_t member count]) | |
| 71 | ],[ | |
| 72 | AC_MSG_RESULT(no) | |
| 73 | ]) | |
| 74 | EXTRA_KCFLAGS="$tmp_flags" | |
| 75 | ]) |