diff options
Diffstat (limited to 'kernel/irq/internals.h')
| -rw-r--r-- | kernel/irq/internals.h | 61 |
1 files changed, 44 insertions, 17 deletions
diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h index 7db284b10ac9..a979523640d0 100644 --- a/kernel/irq/internals.h +++ b/kernel/irq/internals.h @@ -12,9 +12,9 @@ #include <linux/sched/clock.h> #ifdef CONFIG_SPARSE_IRQ -# define IRQ_BITMAP_BITS (NR_IRQS + 8196) +# define MAX_SPARSE_IRQS INT_MAX #else -# define IRQ_BITMAP_BITS NR_IRQS +# define MAX_SPARSE_IRQS NR_IRQS #endif #define istate core_internal_state__do_not_mess_with_it @@ -29,12 +29,14 @@ extern struct irqaction chained_action; * IRQTF_WARNED - warning "IRQ_WAKE_THREAD w/o thread_fn" has been printed * IRQTF_AFFINITY - irq thread is requested to adjust affinity * IRQTF_FORCED_THREAD - irq action is force threaded + * IRQTF_READY - signals that irq thread is ready */ enum { IRQTF_RUNTHREAD, IRQTF_WARNED, IRQTF_AFFINITY, IRQTF_FORCED_THREAD, + IRQTF_READY, }; /* @@ -45,11 +47,15 @@ enum { * detection * IRQS_POLL_INPROGRESS - polling in progress * IRQS_ONESHOT - irq is not unmasked in primary handler - * IRQS_REPLAY - irq is replayed + * IRQS_REPLAY - irq has been resent and will not be resent + * again until the handler has run and cleared + * this flag. * IRQS_WAITING - irq is waiting - * IRQS_PENDING - irq is pending and replayed later + * IRQS_PENDING - irq needs to be resent and should be resent + * at the next available opportunity. * IRQS_SUSPENDED - irq is suspended * IRQS_NMI - irq line is used to deliver NMIs + * IRQS_SYSFS - descriptor has been added to sysfs */ enum { IRQS_AUTODETECT = 0x00000001, @@ -62,6 +68,7 @@ enum { IRQS_SUSPENDED = 0x00000800, IRQS_TIMINGS = 0x00001000, IRQS_NMI = 0x00002000, + IRQS_SYSFS = 0x00004000, }; #include "debug.h" @@ -91,6 +98,8 @@ extern void mask_irq(struct irq_desc *desc); extern void unmask_irq(struct irq_desc *desc); extern void unmask_threaded_irq(struct irq_desc *desc); +extern unsigned int kstat_irqs_desc(struct irq_desc *desc, const struct cpumask *cpumask); + #ifdef CONFIG_SPARSE_IRQ static inline void irq_mark_irq(unsigned int irq) { } #else @@ -101,17 +110,19 @@ extern int __irq_get_irqchip_state(struct irq_data *data, enum irqchip_irq_state which, bool *state); -extern void init_kstat_irqs(struct irq_desc *desc, int node, int nr); - -irqreturn_t __handle_irq_event_percpu(struct irq_desc *desc, unsigned int *flags); +irqreturn_t __handle_irq_event_percpu(struct irq_desc *desc); irqreturn_t handle_irq_event_percpu(struct irq_desc *desc); irqreturn_t handle_irq_event(struct irq_desc *desc); /* Resending of interrupts :*/ int check_irq_resend(struct irq_desc *desc, bool inject); +void clear_irq_resend(struct irq_desc *desc); +void irq_resend_init(struct irq_desc *desc); bool irq_wait_for_poll(struct irq_desc *desc); void __irq_wake_thread(struct irq_desc *desc, struct irqaction *action); +void wake_threads_waitq(struct irq_desc *desc); + #ifdef CONFIG_PROC_FS extern void register_irq_proc(unsigned int irq, struct irq_desc *desc); extern void unregister_irq_proc(unsigned int irq, struct irq_desc *desc); @@ -249,7 +260,7 @@ static inline void irq_state_set_masked(struct irq_desc *desc) static inline void __kstat_incr_irqs_this_cpu(struct irq_desc *desc) { - __this_cpu_inc(*desc->kstat_irqs); + __this_cpu_inc(desc->kstat_irqs->cnt); __this_cpu_inc(kstat.irqs_sum); } @@ -269,6 +280,11 @@ static inline int irq_desc_is_chained(struct irq_desc *desc) return (desc->action && desc->action == &chained_action); } +static inline bool irq_is_nmi(struct irq_desc *desc) +{ + return desc->istate & IRQS_NMI; +} + #ifdef CONFIG_PM_SLEEP bool irq_pm_check_wakeup(struct irq_desc *desc); void irq_pm_install_action(struct irq_desc *desc, struct irqaction *action); @@ -405,7 +421,7 @@ irq_init_generic_chip(struct irq_chip_generic *gc, const char *name, #ifdef CONFIG_GENERIC_PENDING_IRQ static inline bool irq_can_move_pcntxt(struct irq_data *data) { - return irqd_can_move_in_process_context(data); + return !(data->chip->flags & IRQCHIP_MOVE_DEFERRED); } static inline bool irq_move_pending(struct irq_data *data) { @@ -425,10 +441,6 @@ static inline struct cpumask *irq_desc_get_pending_mask(struct irq_desc *desc) { return desc->pending_mask; } -static inline bool handle_enforce_irqctx(struct irq_data *data) -{ - return irqd_is_handle_enforce_irqctx(data); -} bool irq_fixup_move_pending(struct irq_desc *desc, bool force_clear); #else /* CONFIG_GENERIC_PENDING_IRQ */ static inline bool irq_can_move_pcntxt(struct irq_data *data) @@ -455,10 +467,6 @@ static inline bool irq_fixup_move_pending(struct irq_desc *desc, bool fclear) { return false; } -static inline bool handle_enforce_irqctx(struct irq_data *data) -{ - return false; -} #endif /* !CONFIG_GENERIC_PENDING_IRQ */ #if !defined(CONFIG_IRQ_DOMAIN) || !defined(CONFIG_IRQ_DOMAIN_HIERARCHY) @@ -473,9 +481,28 @@ static inline void irq_domain_deactivate_irq(struct irq_data *data) } #endif +static inline struct irq_data *irqd_get_parent_data(struct irq_data *irqd) +{ +#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY + return irqd->parent_data; +#else + return NULL; +#endif +} + #ifdef CONFIG_GENERIC_IRQ_DEBUGFS #include <linux/debugfs.h> +struct irq_bit_descr { + unsigned int mask; + char *name; +}; + +#define BIT_MASK_DESCR(m) { .mask = m, .name = #m } + +void irq_debug_show_bits(struct seq_file *m, int ind, unsigned int state, + const struct irq_bit_descr *sd, int size); + void irq_add_debugfs_entry(unsigned int irq, struct irq_desc *desc); static inline void irq_remove_debugfs_entry(struct irq_desc *desc) { |