Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index eeceac3..89fc59d 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -45,14 +45,14 @@
* IRQF_PERCPU - Interrupt is per cpu
* IRQF_NOBALANCING - Flag to exclude this interrupt from irq balancing
* IRQF_IRQPOLL - Interrupt is used for polling (only the interrupt that is
- * registered first in an shared interrupt is considered for
+ * registered first in a shared interrupt is considered for
* performance reasons)
* IRQF_ONESHOT - Interrupt is not reenabled after the hardirq handler finished.
* Used by threaded interrupts which need to keep the
* irq line disabled until the threaded handler has been run.
* IRQF_NO_SUSPEND - Do not disable this IRQ during suspend. Does not guarantee
* that this interrupt will wake the system from a suspended
- * state. See Documentation/power/suspend-and-interrupts.txt
+ * state. See Documentation/power/suspend-and-interrupts.rst
* IRQF_FORCE_RESUME - Force enable it on resume even if IRQF_NO_SUSPEND is set
* IRQF_NO_THREAD - Interrupt cannot be threaded
* IRQF_EARLY_RESUME - Resume IRQ early during syscore instead of at device
@@ -156,6 +156,10 @@
unsigned long flags, const char *devname,
void __percpu *percpu_dev_id);
+extern int __must_check
+request_nmi(unsigned int irq, irq_handler_t handler, unsigned long flags,
+ const char *name, void *dev);
+
static inline int __must_check
request_percpu_irq(unsigned int irq, irq_handler_t handler,
const char *devname, void __percpu *percpu_dev_id)
@@ -164,9 +168,16 @@
devname, percpu_dev_id);
}
+extern int __must_check
+request_percpu_nmi(unsigned int irq, irq_handler_t handler,
+ const char *devname, void __percpu *dev);
+
extern const void *free_irq(unsigned int, void *);
extern void free_percpu_irq(unsigned int, void __percpu *);
+extern const void *free_nmi(unsigned int irq, void *dev_id);
+extern void free_percpu_nmi(unsigned int irq, void __percpu *percpu_dev_id);
+
struct device;
extern int __must_check
@@ -217,9 +228,17 @@
extern bool irq_percpu_is_enabled(unsigned int irq);
extern void irq_wake_thread(unsigned int irq, void *dev_id);
+extern void disable_nmi_nosync(unsigned int irq);
+extern void disable_percpu_nmi(unsigned int irq);
+extern void enable_nmi(unsigned int irq);
+extern void enable_percpu_nmi(unsigned int irq, unsigned int type);
+extern int prepare_percpu_nmi(unsigned int irq);
+extern void teardown_percpu_nmi(unsigned int irq);
+
/* The following three functions are for the core kernel use only. */
extern void suspend_device_irqs(void);
extern void resume_device_irqs(void);
+extern void rearm_wake_irq(unsigned int irq);
/**
* struct irq_affinity_notify - context for notification of IRQ affinity changes
@@ -241,16 +260,39 @@
void (*release)(struct kref *ref);
};
+#define IRQ_AFFINITY_MAX_SETS 4
+
/**
* struct irq_affinity - Description for automatic irq affinity assignements
* @pre_vectors: Don't apply affinity to @pre_vectors at beginning of
* the MSI(-X) vector space
* @post_vectors: Don't apply affinity to @post_vectors at end of
* the MSI(-X) vector space
+ * @nr_sets: The number of interrupt sets for which affinity
+ * spreading is required
+ * @set_size: Array holding the size of each interrupt set
+ * @calc_sets: Callback for calculating the number and size
+ * of interrupt sets
+ * @priv: Private data for usage by @calc_sets, usually a
+ * pointer to driver/device specific data.
*/
struct irq_affinity {
- int pre_vectors;
- int post_vectors;
+ unsigned int pre_vectors;
+ unsigned int post_vectors;
+ unsigned int nr_sets;
+ unsigned int set_size[IRQ_AFFINITY_MAX_SETS];
+ void (*calc_sets)(struct irq_affinity *, unsigned int nvecs);
+ void *priv;
+};
+
+/**
+ * struct irq_affinity_desc - Interrupt affinity descriptor
+ * @mask: cpumask to hold the affinity assignment
+ * @is_managed: 1 if the interrupt is managed internally
+ */
+struct irq_affinity_desc {
+ struct cpumask mask;
+ unsigned int is_managed : 1;
};
#if defined(CONFIG_SMP)
@@ -299,8 +341,11 @@
extern int
irq_set_affinity_notifier(unsigned int irq, struct irq_affinity_notify *notify);
-struct cpumask *irq_create_affinity_masks(int nvec, const struct irq_affinity *affd);
-int irq_calc_affinity_vectors(int minvec, int maxvec, const struct irq_affinity *affd);
+struct irq_affinity_desc *
+irq_create_affinity_masks(unsigned int nvec, struct irq_affinity *affd);
+
+unsigned int irq_calc_affinity_vectors(unsigned int minvec, unsigned int maxvec,
+ const struct irq_affinity *affd);
#else /* CONFIG_SMP */
@@ -333,14 +378,15 @@
return 0;
}
-static inline struct cpumask *
-irq_create_affinity_masks(int nvec, const struct irq_affinity *affd)
+static inline struct irq_affinity_desc *
+irq_create_affinity_masks(unsigned int nvec, struct irq_affinity *affd)
{
return NULL;
}
-static inline int
-irq_calc_affinity_vectors(int minvec, int maxvec, const struct irq_affinity *affd)
+static inline unsigned int
+irq_calc_affinity_vectors(unsigned int minvec, unsigned int maxvec,
+ const struct irq_affinity *affd)
{
return maxvec;
}
@@ -427,7 +473,11 @@
bool state);
#ifdef CONFIG_IRQ_FORCED_THREADING
+# ifdef CONFIG_PREEMPT_RT
+# define force_irqthreads (true)
+# else
extern bool force_irqthreads;
+# endif
#else
#define force_irqthreads (0)
#endif
@@ -623,31 +673,6 @@
extern void tasklet_init(struct tasklet_struct *t,
void (*func)(unsigned long), unsigned long data);
-struct tasklet_hrtimer {
- struct hrtimer timer;
- struct tasklet_struct tasklet;
- enum hrtimer_restart (*function)(struct hrtimer *);
-};
-
-extern void
-tasklet_hrtimer_init(struct tasklet_hrtimer *ttimer,
- enum hrtimer_restart (*function)(struct hrtimer *),
- clockid_t which_clock, enum hrtimer_mode mode);
-
-static inline
-void tasklet_hrtimer_start(struct tasklet_hrtimer *ttimer, ktime_t time,
- const enum hrtimer_mode mode)
-{
- hrtimer_start(&ttimer->timer, time, mode);
-}
-
-static inline
-void tasklet_hrtimer_cancel(struct tasklet_hrtimer *ttimer)
-{
- hrtimer_cancel(&ttimer->timer);
- tasklet_kill(&ttimer->tasklet);
-}
-
/*
* Autoprobing for irqs:
*