diff options
Diffstat (limited to 'config/kernel-timer.m4')
| -rw-r--r-- | config/kernel-timer.m4 | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/config/kernel-timer.m4 b/config/kernel-timer.m4 new file mode 100644 index 000000000..93b5158b9 --- /dev/null +++ b/config/kernel-timer.m4 @@ -0,0 +1,32 @@ +dnl # +dnl # 4.15 API change +dnl # https://lkml.org/lkml/2017/11/25/90 +dnl # Check if timer_list.func get passed a timer_list or an unsigned long +dnl # (older kernels). Also sanity check the from_timer() and timer_setup() +dnl # macros are available as well, since they will be used in the same newer +dnl # kernels that support the new timer_list.func signature. +dnl # +AC_DEFUN([SPL_AC_KERNEL_TIMER_FUNCTION_TIMER_LIST], [ + AC_MSG_CHECKING([whether timer_list.function gets a timer_list]) + tmp_flags="$EXTRA_KCFLAGS" + EXTRA_KCFLAGS="-Werror" + SPL_LINUX_TRY_COMPILE([ + #include <linux/timer.h> + void task_expire(struct timer_list *tl) {} + ],[ + #ifndef from_timer + #error "No from_timer() macro" + #endif + + struct timer_list timer; + timer.function = task_expire; + timer_setup(&timer, NULL, 0); + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_KERNEL_TIMER_FUNCTION_TIMER_LIST, 1, + [timer_list.function gets a timer_list]) + ],[ + AC_MSG_RESULT(no) + ]) + EXTRA_KCFLAGS="$tmp_flags" +]) |