43 #define FDO_BUG_URL "https://gitlab.freedesktop.org/drm/intel/-/wikis/How-to-file-i915-bugs"
70 #define i915_inject_probe_failure(i915) i915_inject_probe_error((i915), -ENODEV)
77 #define add_overflows_t(T, A, B) \  argument
78 	__builtin_add_overflow_p((A), (B), (T)0)
80 #define add_overflows_t(T, A, B) ({ \  argument
83 	(T)(a + b) < a; \
96 	start__ >= max__ || size__ > max__ - start__; \
108 	start__ > max__ || size__ > max__ - start__; \
116 	(typeof(ptr))(__v & -BIT(n));					\
119 #define ptr_unmask_bits(ptr, n) ((unsigned long)(ptr) & (BIT(n) - 1))
123 	*(bits) = __v & (BIT(n) - 1);					\
124 	(typeof(ptr))(__v & -BIT(n));					\
129 	GEM_BUG_ON(__bits & -BIT(n));					\
135 	(typeof(ptr))(__v - 1);						\
156 	return a - b;  in ptrdiff()
170 	((type __user *)(__mptr - offsetof(type, member))); })
183  * Returns: -EFAULT if not accessible, -EINVAL if !zero, or 0 on success.
187 	get_user(mbz__, (U)) ? -EFAULT : mbz__ ? -EINVAL : 0;		\
190 #define u64_to_ptr(T, x) ({						\  argument
192 	(T *)(uintptr_t)(x);						\
196 	int __idx = ffs(mask) - 1;					\
203 	return (n != 0 && ((n & (n - 1)) == 0));  in is_power_of_2_u64()
209 	first->prev = head;  in __list_del_many()
210 	WRITE_ONCE(head->next, first);  in __list_del_many()
216 	return READ_ONCE(list->next) == head;  in list_is_last_rcu()
228  * doesn't happen exactly after event A, you record the timestamp (jiffies) of
238 	 * Don't re-read the value of "jiffies" every time since it may change  in wait_remaining_ms_from_jiffies()
246 		remaining_jiffies = target_jiffies - tmp_jiffies;  in wait_remaining_ms_from_jiffies()
254  * __wait_for - magic wait macro
262 	const ktime_t end__ = ktime_add_ns(ktime_get_raw(), 1000ll * (US)); \
276 			ret__ = -ETIMEDOUT;				\
288 #define wait_for(COND, MS)		_wait_for((COND), (MS) * 1000, 10, 1000)
299 	int cpu, ret, timeout = (US) * 1000; \
300 	u64 base; \
306 	base = local_clock(); \
317 		if (now - base >= timeout) { \
318 			ret = -ETIMEDOUT; \
325 				timeout -= now - base; \
327 				base = local_clock(); \
352 #define wait_for_atomic(COND, MS) wait_for_atomic_us((COND), (MS) * 1000)
354 #define KHz(x) (1000 * (x))
355 #define MHz(x) KHz(1000 * (x))
369 void cancel_timer(struct timer_list *t);
370 void set_timer_ms(struct timer_list *t, unsigned long timeout);
372 static inline bool timer_active(const struct timer_list *t)  in timer_active()  argument
374 	return READ_ONCE(t->expires);  in timer_active()
377 static inline bool timer_expired(const struct timer_list *t)  in timer_expired()  argument
379 	return timer_active(t) && !timer_pending(t);  in timer_expired()