summaryrefslogtreecommitdiffstats
path: root/include
diff options
context:
space:
mode:
Diffstat (limited to 'include')
-rw-r--r--include/linux/interrupt.h41
-rw-r--r--include/linux/irq.h18
-rw-r--r--include/linux/irqdesc.h1
3 files changed, 48 insertions, 12 deletions
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index a103732b7588..a64b00e286f5 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -59,6 +59,8 @@
* IRQF_NO_SUSPEND - Do not disable this IRQ during suspend
* 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
+ * resume time.
*/
#define IRQF_DISABLED 0x00000020
#define IRQF_SAMPLE_RANDOM 0x00000040
@@ -72,6 +74,7 @@
#define IRQF_NO_SUSPEND 0x00004000
#define IRQF_FORCE_RESUME 0x00008000
#define IRQF_NO_THREAD 0x00010000
+#define IRQF_EARLY_RESUME 0x00020000
#define IRQF_TIMER (__IRQF_TIMER | IRQF_NO_SUSPEND | IRQF_NO_THREAD)
@@ -95,6 +98,7 @@ typedef irqreturn_t (*irq_handler_t)(int, void *);
* @flags: flags (see IRQF_* above)
* @name: name of the device
* @dev_id: cookie to identify the device
+ * @percpu_dev_id: cookie to identify the device
* @next: pointer to the next irqaction for shared interrupts
* @irq: interrupt number
* @dir: pointer to the proc/irq/NN/name entry
@@ -104,17 +108,18 @@ typedef irqreturn_t (*irq_handler_t)(int, void *);
* @thread_mask: bitmask for keeping track of @thread activity
*/
struct irqaction {
- irq_handler_t handler;
- unsigned long flags;
- void *dev_id;
- struct irqaction *next;
- int irq;
- irq_handler_t thread_fn;
- struct task_struct *thread;
- unsigned long thread_flags;
- unsigned long thread_mask;
- const char *name;
- struct proc_dir_entry *dir;
+ irq_handler_t handler;
+ unsigned long flags;
+ void *dev_id;
+ void __percpu *percpu_dev_id;
+ struct irqaction *next;
+ int irq;
+ irq_handler_t thread_fn;
+ struct task_struct *thread;
+ unsigned long thread_flags;
+ unsigned long thread_mask;
+ const char *name;
+ struct proc_dir_entry *dir;
} ____cacheline_internodealigned_in_smp;
extern irqreturn_t no_action(int cpl, void *dev_id);
@@ -136,6 +141,10 @@ extern int __must_check
request_any_context_irq(unsigned int irq, irq_handler_t handler,
unsigned long flags, const char *name, void *dev_id);
+extern int __must_check
+request_percpu_irq(unsigned int irq, irq_handler_t handler,
+ const char *devname, void __percpu *percpu_dev_id);
+
extern void exit_irq_thread(void);
#else
@@ -164,10 +173,18 @@ request_any_context_irq(unsigned int irq, irq_handler_t handler,
return request_irq(irq, handler, flags, name, dev_id);
}
+static inline int __must_check
+request_percpu_irq(unsigned int irq, irq_handler_t handler,
+ const char *devname, void __percpu *percpu_dev_id)
+{
+ return request_irq(irq, handler, 0, devname, percpu_dev_id);
+}
+
static inline void exit_irq_thread(void) { }
#endif
extern void free_irq(unsigned int, void *);
+extern void free_percpu_irq(unsigned int, void __percpu *);
struct device;
@@ -207,7 +224,9 @@ extern void devm_free_irq(struct device *dev, unsigned int irq, void *dev_id);
extern void disable_irq_nosync(unsigned int irq);
extern void disable_irq(unsigned int irq);
+extern void disable_percpu_irq(unsigned int irq);
extern void enable_irq(unsigned int irq);
+extern void enable_percpu_irq(unsigned int irq, unsigned int type);
/* The following three functions are for the core kernel use only. */
#ifdef CONFIG_GENERIC_HARDIRQS
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 59517300a315..59e49c80cc2c 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -66,6 +66,7 @@ typedef void (*irq_preflow_handler_t)(struct irq_data *data);
* IRQ_NO_BALANCING - Interrupt cannot be balanced (affinity set)
* IRQ_MOVE_PCNTXT - Interrupt can be migrated from process context
* IRQ_NESTED_TRHEAD - Interrupt nests into another thread
+ * IRQ_PER_CPU_DEVID - Dev_id is a per-cpu variable
*/
enum {
IRQ_TYPE_NONE = 0x00000000,
@@ -88,12 +89,13 @@ enum {
IRQ_MOVE_PCNTXT = (1 << 14),
IRQ_NESTED_THREAD = (1 << 15),
IRQ_NOTHREAD = (1 << 16),
+ IRQ_PER_CPU_DEVID = (1 << 17),
};
#define IRQF_MODIFY_MASK \
(IRQ_TYPE_SENSE_MASK | IRQ_NOPROBE | IRQ_NOREQUEST | \
IRQ_NOAUTOEN | IRQ_MOVE_PCNTXT | IRQ_LEVEL | IRQ_NO_BALANCING | \
- IRQ_PER_CPU | IRQ_NESTED_THREAD)
+ IRQ_PER_CPU | IRQ_NESTED_THREAD | IRQ_NOTHREAD | IRQ_PER_CPU_DEVID)
#define IRQ_NO_BALANCING_MASK (IRQ_PER_CPU | IRQ_NO_BALANCING)
@@ -336,12 +338,14 @@ struct irq_chip {
* IRQCHIP_MASK_ON_SUSPEND: Mask non wake irqs in the suspend path
* IRQCHIP_ONOFFLINE_ENABLED: Only call irq_on/off_line callbacks
* when irq enabled
+ * IRQCHIP_SKIP_SET_WAKE: Skip chip.irq_set_wake(), for this irq chip
*/
enum {
IRQCHIP_SET_TYPE_MASKED = (1 << 0),
IRQCHIP_EOI_IF_HANDLED = (1 << 1),
IRQCHIP_MASK_ON_SUSPEND = (1 << 2),
IRQCHIP_ONOFFLINE_ENABLED = (1 << 3),
+ IRQCHIP_SKIP_SET_WAKE = (1 << 4),
};
/* This include will go away once we isolated irq_desc usage to core code */
@@ -365,6 +369,8 @@ enum {
struct irqaction;
extern int setup_irq(unsigned int irq, struct irqaction *new);
extern void remove_irq(unsigned int irq, struct irqaction *act);
+extern int setup_percpu_irq(unsigned int irq, struct irqaction *new);
+extern void remove_percpu_irq(unsigned int irq, struct irqaction *act);
extern void irq_cpu_online(void);
extern void irq_cpu_offline(void);
@@ -392,6 +398,7 @@ extern void handle_edge_irq(unsigned int irq, struct irq_desc *desc);
extern void handle_edge_eoi_irq(unsigned int irq, struct irq_desc *desc);
extern void handle_simple_irq(unsigned int irq, struct irq_desc *desc);
extern void handle_percpu_irq(unsigned int irq, struct irq_desc *desc);
+extern void handle_percpu_devid_irq(unsigned int irq, struct irq_desc *desc);
extern void handle_bad_irq(unsigned int irq, struct irq_desc *desc);
extern void handle_nested_irq(unsigned int irq);
@@ -420,6 +427,8 @@ static inline void irq_set_chip_and_handler(unsigned int irq, struct irq_chip *c
irq_set_chip_and_handler_name(irq, chip, handle, NULL);
}
+extern int irq_set_percpu_devid(unsigned int irq);
+
extern void
__irq_set_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
const char *name);
@@ -481,6 +490,13 @@ static inline void irq_set_nested_thread(unsigned int irq, bool nest)
irq_clear_status_flags(irq, IRQ_NESTED_THREAD);
}
+static inline void irq_set_percpu_devid_flags(unsigned int irq)
+{
+ irq_set_status_flags(irq,
+ IRQ_NOAUTOEN | IRQ_PER_CPU | IRQ_NOTHREAD |
+ IRQ_NOPROBE | IRQ_PER_CPU_DEVID);
+}
+
/* Handle dynamic irq creation and destruction */
extern unsigned int create_irq_nr(unsigned int irq_want, int node);
extern int create_irq(void);
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
index 150134ac709a..6b69c2c9dff1 100644
--- a/include/linux/irqdesc.h
+++ b/include/linux/irqdesc.h
@@ -53,6 +53,7 @@ struct irq_desc {
unsigned long last_unhandled; /* Aging timer for unhandled count */
unsigned int irqs_unhandled;
raw_spinlock_t lock;
+ struct cpumask *percpu_enabled;
#ifdef CONFIG_SMP
const struct cpumask *affinity_hint;
struct irq_affinity_notify *affinity_notify;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-26 19:52:56 +0000