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diff --git a/sys/compat/linuxkpi/common/include/linux/hrtimer.h b/sys/compat/linuxkpi/common/include/linux/hrtimer.h
--- a/sys/compat/linuxkpi/common/include/linux/hrtimer.h
+++ b/sys/compat/linuxkpi/common/include/linux/hrtimer.h
@@ -55,11 +55,20 @@
#define hrtimer_try_to_cancel(hrtimer) linux_hrtimer_try_to_cancel(hrtimer)
#define hrtimer_cancel(hrtimer) linux_hrtimer_cancel(hrtimer)
+/* hrtimer_init() is replaced by hrtimer_setup() in Linux 6.15. */
+#if defined(LINUXKPI_VERSION) && LINUXKPI_VERSION < 61500
#define hrtimer_init(hrtimer, clock, mode) do { \
CTASSERT((clock) == CLOCK_MONOTONIC); \
CTASSERT((mode) == HRTIMER_MODE_REL); \
linux_hrtimer_init(hrtimer); \
} while (0)
+#endif
+
+#define hrtimer_setup(hrtimer, restart, clock, mode) do { \
+ CTASSERT((clock) == CLOCK_MONOTONIC); \
+ CTASSERT((mode) == HRTIMER_MODE_REL); \
+ linuxkpi_hrtimer_setup(hrtimer, restart); \
+} while (0)
#define hrtimer_set_expires(hrtimer, time) \
linux_hrtimer_set_expires(hrtimer, time)
@@ -81,10 +90,20 @@
bool linux_hrtimer_active(struct hrtimer *);
int linux_hrtimer_try_to_cancel(struct hrtimer *);
int linux_hrtimer_cancel(struct hrtimer *);
+/*
+ * The corresponding `hrtimer_init()` was dropped in Linux 6.15, thus the "#if
+ * LINUXKPI_VERSION < 61500" above. We keep this prototype here though because
+ * the underlying `linux_hrtimer_init()` is used by `linuxkpi_hrtimer_setup()`.
+ */
void linux_hrtimer_init(struct hrtimer *);
+void linuxkpi_hrtimer_setup(struct hrtimer *hrtimer,
+ enum hrtimer_restart (*function)(struct hrtimer *));
void linux_hrtimer_set_expires(struct hrtimer *, ktime_t);
void linux_hrtimer_start(struct hrtimer *, ktime_t);
void linux_hrtimer_start_range_ns(struct hrtimer *, ktime_t, int64_t);
void linux_hrtimer_forward_now(struct hrtimer *, ktime_t);
+enum hrtimer_restart linuxkpi_hrtimer_dummy_timeout(struct hrtimer *unused);
+#define hrtimer_dummy_timeout(hrtimer) linuxkpi_hrtimer_dummy_timeout(hrtimer)
+
#endif /* _LINUXKPI_LINUX_HRTIMER_H_ */
diff --git a/sys/compat/linuxkpi/common/src/linux_hrtimer.c b/sys/compat/linuxkpi/common/src/linux_hrtimer.c
--- a/sys/compat/linuxkpi/common/src/linux_hrtimer.c
+++ b/sys/compat/linuxkpi/common/src/linux_hrtimer.c
@@ -105,6 +105,23 @@
callout_init_mtx(&hrtimer->callout, &hrtimer->mtx, 0);
}
+enum hrtimer_restart
+linuxkpi_hrtimer_dummy_timeout(struct hrtimer *unused __unused)
+{
+ return (HRTIMER_NORESTART);
+}
+
+void
+linuxkpi_hrtimer_setup(struct hrtimer *hrtimer,
+ enum hrtimer_restart (*function)(struct hrtimer *))
+{
+ linux_hrtimer_init(hrtimer);
+ if (function != NULL)
+ hrtimer->function = function;
+ else
+ hrtimer->function = linuxkpi_hrtimer_dummy_timeout;
+}
+
void
linux_hrtimer_set_expires(struct hrtimer *hrtimer, ktime_t time)
{

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