Contributors: 44
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Thomas Gleixner |
1162 |
64.31% |
96 |
59.26% |
| Ingo Molnar |
161 |
8.91% |
4 |
2.47% |
| Yinghai Lu |
145 |
8.02% |
7 |
4.32% |
| Jiang Liu |
73 |
4.04% |
5 |
3.09% |
| Marc Zyngier |
29 |
1.60% |
1 |
0.62% |
| Linus Torvalds (pre-git) |
26 |
1.44% |
6 |
3.70% |
| Christoph Hellwig |
17 |
0.94% |
1 |
0.62% |
| David Brownell |
16 |
0.89% |
1 |
0.62% |
| Daniel Lezcano |
16 |
0.89% |
2 |
1.23% |
| Bruno Prémont |
14 |
0.77% |
1 |
0.62% |
| Grygorii Strashko |
13 |
0.72% |
1 |
0.62% |
| Rusty Russell |
13 |
0.72% |
3 |
1.85% |
| Mika Westerberg |
10 |
0.55% |
1 |
0.62% |
| Shanker Donthineni |
10 |
0.55% |
3 |
1.85% |
| Rafael J. Wysocki |
9 |
0.50% |
1 |
0.62% |
| Shijith Thotton |
8 |
0.44% |
1 |
0.62% |
| Bartosz Golaszewski |
7 |
0.39% |
1 |
0.62% |
| Ben Hutchings |
6 |
0.33% |
1 |
0.62% |
| Juergen Gross |
6 |
0.33% |
1 |
0.62% |
| Khan, Imran |
5 |
0.28% |
1 |
0.62% |
| Mike Travis |
5 |
0.28% |
1 |
0.62% |
| Kamezawa Hiroyuki |
5 |
0.28% |
1 |
0.62% |
| Yang Yingliang |
4 |
0.22% |
1 |
0.62% |
| Boqun Feng |
4 |
0.22% |
1 |
0.62% |
| Julien Thierry |
4 |
0.22% |
1 |
0.62% |
| Nathan Chancellor |
4 |
0.22% |
1 |
0.62% |
| Thomas Pfaff |
3 |
0.17% |
1 |
0.62% |
| Jon Hunter |
3 |
0.17% |
1 |
0.62% |
| Brian Norris |
3 |
0.17% |
1 |
0.62% |
| ruanjinjie |
3 |
0.17% |
1 |
0.62% |
| Vincent Whitchurch |
3 |
0.17% |
1 |
0.62% |
| Keith Busch |
3 |
0.17% |
1 |
0.62% |
| Jeremy Fitzhardinge |
2 |
0.11% |
1 |
0.62% |
| Matthew Wilcox |
2 |
0.11% |
1 |
0.62% |
| Bitao Hu |
2 |
0.11% |
1 |
0.62% |
| Maksim Krasnyanskiy |
2 |
0.11% |
1 |
0.62% |
| Grant C. Likely |
2 |
0.11% |
1 |
0.62% |
| Mian Yousaf Kaukab |
1 |
0.06% |
1 |
0.62% |
| Masahiro Yamada |
1 |
0.06% |
1 |
0.62% |
| Eric W. Biedermann |
1 |
0.06% |
1 |
0.62% |
| Dmitry Ilvokhin |
1 |
0.06% |
1 |
0.62% |
| Gowans, James |
1 |
0.06% |
1 |
0.62% |
| Hannes Eder |
1 |
0.06% |
1 |
0.62% |
| Greg Kroah-Hartman |
1 |
0.06% |
1 |
0.62% |
| Total |
1807 |
|
162 |
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* IRQ subsystem internal functions and variables:
*
* Do not ever include this file from anything else than
* kernel/irq/. Do not even think about using any information outside
* of this file for your non core code.
*/
#include <linux/irqdesc.h>
#include <linux/kernel_stat.h>
#include <linux/pm_runtime.h>
#include <linux/rcuref.h>
#include <linux/sched/clock.h>
#include "debugfs.h"
#include "proc.h"
#ifdef CONFIG_SPARSE_IRQ
# define MAX_SPARSE_IRQS INT_MAX
#else
# define MAX_SPARSE_IRQS NR_IRQS
#endif
#define istate core_internal_state__do_not_mess_with_it
extern bool noirqdebug;
extern int irq_poll_cpu;
extern unsigned int total_nr_irqs;
extern struct irqaction chained_action;
/*
* Bits used by threaded handlers:
* IRQTF_RUNTHREAD - signals that the interrupt handler thread should run
* 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,
};
/*
* Bit masks for desc->core_internal_state__do_not_mess_with_it
*
* IRQS_AUTODETECT - autodetection in progress
* IRQS_SPURIOUS_DISABLED - was disabled due to spurious interrupt
* detection
* IRQS_POLL_INPROGRESS - polling in progress
* IRQS_ONESHOT - irq is not unmasked in primary handler
* 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 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,
IRQS_SPURIOUS_DISABLED = 0x00000002,
IRQS_POLL_INPROGRESS = 0x00000008,
IRQS_ONESHOT = 0x00000020,
IRQS_REPLAY = 0x00000040,
IRQS_WAITING = 0x00000080,
IRQS_PENDING = 0x00000200,
IRQS_SUSPENDED = 0x00000800,
IRQS_TIMINGS = 0x00001000,
IRQS_NMI = 0x00002000,
IRQS_SYSFS = 0x00004000,
};
#include "debug.h"
#include "settings.h"
extern int __irq_set_trigger(struct irq_desc *desc, unsigned long flags);
extern void __disable_irq(struct irq_desc *desc);
extern void __enable_irq(struct irq_desc *desc);
#define IRQ_RESEND true
#define IRQ_NORESEND false
#define IRQ_START_FORCE true
#define IRQ_START_COND false
extern int irq_activate(struct irq_desc *desc);
extern int irq_activate_and_startup(struct irq_desc *desc, bool resend);
extern int irq_startup(struct irq_desc *desc, bool resend, bool force);
extern void irq_startup_managed(struct irq_desc *desc);
extern void irq_shutdown(struct irq_desc *desc);
extern void irq_shutdown_and_deactivate(struct irq_desc *desc);
extern void irq_disable(struct irq_desc *desc);
extern void irq_percpu_enable(struct irq_desc *desc, unsigned int cpu);
extern void irq_percpu_disable(struct irq_desc *desc, unsigned int cpu);
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);
#ifdef CONFIG_SPARSE_IRQ
static __always_inline void irq_mark_irq(unsigned int irq) { }
void irq_desc_free_rcu(struct irq_desc *desc);
static __always_inline bool irq_desc_get_ref(struct irq_desc *desc)
{
return rcuref_get(&desc->refcnt);
}
static __always_inline void irq_desc_put_ref(struct irq_desc *desc)
{
if (rcuref_put(&desc->refcnt))
irq_desc_free_rcu(desc);
}
#else
extern void irq_mark_irq(unsigned int irq);
static __always_inline bool irq_desc_get_ref(struct irq_desc *desc) { return true; }
static __always_inline void irq_desc_put_ref(struct irq_desc *desc) { }
#endif
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);
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);
extern void register_handler_proc(unsigned int irq, struct irqaction *action);
extern void unregister_handler_proc(unsigned int irq, struct irqaction *action);
void irq_proc_update_valid(struct irq_desc *desc);
#else
static inline void register_irq_proc(unsigned int irq, struct irq_desc *desc) { }
static inline void unregister_irq_proc(unsigned int irq, struct irq_desc *desc) { }
static inline void register_handler_proc(unsigned int irq,
struct irqaction *action) { }
static inline void unregister_handler_proc(unsigned int irq,
struct irqaction *action) { }
static inline void irq_proc_update_valid(struct irq_desc *desc) { }
#endif
struct irq_desc *irq_find_desc_at_or_after(unsigned int offset);
extern bool irq_can_set_affinity_usr(unsigned int irq);
extern int irq_do_set_affinity(struct irq_data *data,
const struct cpumask *dest, bool force);
extern void irq_affinity_schedule_notify_work(struct irq_desc *desc);
#ifdef CONFIG_SMP
extern int irq_setup_affinity(struct irq_desc *desc);
#else
static inline int irq_setup_affinity(struct irq_desc *desc) { return 0; }
#endif
#define for_each_action_of_desc(desc, act) \
for (act = desc->action; act; act = act->next)
/* Inline functions for support of irq chips on slow busses */
static inline void chip_bus_lock(struct irq_desc *desc)
{
if (unlikely(desc->irq_data.chip->irq_bus_lock))
desc->irq_data.chip->irq_bus_lock(&desc->irq_data);
}
static inline void chip_bus_sync_unlock(struct irq_desc *desc)
{
if (unlikely(desc->irq_data.chip->irq_bus_sync_unlock))
desc->irq_data.chip->irq_bus_sync_unlock(&desc->irq_data);
}
#define _IRQ_DESC_CHECK (1 << 0)
#define _IRQ_DESC_PERCPU (1 << 1)
#define IRQ_GET_DESC_CHECK_GLOBAL (_IRQ_DESC_CHECK)
#define IRQ_GET_DESC_CHECK_PERCPU (_IRQ_DESC_CHECK | _IRQ_DESC_PERCPU)
struct irq_desc *__irq_get_desc_lock(unsigned int irq, unsigned long *flags, bool bus,
unsigned int check);
void __irq_put_desc_unlock(struct irq_desc *desc, unsigned long flags, bool bus);
__DEFINE_CLASS_IS_CONDITIONAL(irqdesc_lock, true);
__DEFINE_UNLOCK_GUARD(irqdesc_lock, struct irq_desc,
if (_T->lock) __irq_put_desc_unlock(_T->lock, _T->flags, _T->bus),
unsigned long flags; bool bus);
static inline class_irqdesc_lock_t class_irqdesc_lock_constructor(unsigned int irq, bool bus,
unsigned int check)
{
class_irqdesc_lock_t _t = { .bus = bus, };
_t.lock = __irq_get_desc_lock(irq, &_t.flags, bus, check);
return _t;
}
#define scoped_irqdesc_get_and_lock(_irq, _check) \
scoped_guard(irqdesc_lock, _irq, false, _check)
#define scoped_irqdesc_get_and_buslock(_irq, _check) \
scoped_guard(irqdesc_lock, _irq, true, _check)
#define scoped_irqdesc ((struct irq_desc *)(__guard_ptr(irqdesc_lock)(&scope)))
#define __irqd_to_state(d) ACCESS_PRIVATE((d)->common, state_use_accessors)
static inline unsigned int irqd_get(struct irq_data *d)
{
return __irqd_to_state(d);
}
/*
* Manipulation functions for irq_data.state
*/
static inline void irqd_set_move_pending(struct irq_data *d)
{
__irqd_to_state(d) |= IRQD_SETAFFINITY_PENDING;
}
static inline void irqd_clr_move_pending(struct irq_data *d)
{
__irqd_to_state(d) &= ~IRQD_SETAFFINITY_PENDING;
}
static inline void irqd_set_managed_shutdown(struct irq_data *d)
{
__irqd_to_state(d) |= IRQD_MANAGED_SHUTDOWN;
}
static inline void irqd_clr_managed_shutdown(struct irq_data *d)
{
__irqd_to_state(d) &= ~IRQD_MANAGED_SHUTDOWN;
}
static inline void irqd_clear(struct irq_data *d, unsigned int mask)
{
__irqd_to_state(d) &= ~mask;
}
static inline void irqd_set(struct irq_data *d, unsigned int mask)
{
__irqd_to_state(d) |= mask;
}
static inline bool irqd_has_set(struct irq_data *d, unsigned int mask)
{
return __irqd_to_state(d) & mask;
}
static inline void irq_state_set_disabled(struct irq_desc *desc)
{
irqd_set(&desc->irq_data, IRQD_IRQ_DISABLED);
}
static inline void irq_state_set_masked(struct irq_desc *desc)
{
irqd_set(&desc->irq_data, IRQD_IRQ_MASKED);
}
#undef __irqd_to_state
static inline void __kstat_incr_irqs_this_cpu(struct irq_desc *desc)
{
__this_cpu_inc(desc->kstat_irqs->cnt);
__this_cpu_inc(kstat.irqs_sum);
}
static inline void kstat_incr_irqs_this_cpu(struct irq_desc *desc)
{
__kstat_incr_irqs_this_cpu(desc);
desc->tot_count++;
}
static inline int irq_desc_get_node(struct irq_desc *desc)
{
return irq_common_data_get_node(&desc->irq_common_data);
}
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
void irq_pm_handle_wakeup(struct irq_desc *desc);
void irq_pm_install_action(struct irq_desc *desc, struct irqaction *action);
void irq_pm_remove_action(struct irq_desc *desc, struct irqaction *action);
#else
static inline void irq_pm_handle_wakeup(struct irq_desc *desc) { }
static inline void
irq_pm_install_action(struct irq_desc *desc, struct irqaction *action) { }
static inline void
irq_pm_remove_action(struct irq_desc *desc, struct irqaction *action) { }
#endif
#ifdef CONFIG_GENERIC_IRQ_CHIP
void irq_init_generic_chip(struct irq_chip_generic *gc, const char *name,
int num_ct, unsigned int irq_base,
void __iomem *reg_base, irq_flow_handler_t handler);
#else
static inline void
irq_init_generic_chip(struct irq_chip_generic *gc, const char *name,
int num_ct, unsigned int irq_base,
void __iomem *reg_base, irq_flow_handler_t handler) { }
#endif /* CONFIG_GENERIC_IRQ_CHIP */
#ifdef CONFIG_GENERIC_PENDING_IRQ
static inline bool irq_can_move_pcntxt(struct irq_data *data)
{
return !(data->chip->flags & IRQCHIP_MOVE_DEFERRED);
}
static inline bool irq_move_pending(struct irq_data *data)
{
return irqd_is_setaffinity_pending(data);
}
static inline void
irq_copy_pending(struct irq_desc *desc, const struct cpumask *mask)
{
cpumask_copy(desc->pending_mask, mask);
}
static inline void
irq_get_pending(struct cpumask *mask, struct irq_desc *desc)
{
cpumask_copy(mask, desc->pending_mask);
}
static inline struct cpumask *irq_desc_get_pending_mask(struct irq_desc *desc)
{
return desc->pending_mask;
}
bool irq_fixup_move_pending(struct irq_desc *desc, bool force_clear);
void irq_force_complete_move(struct irq_desc *desc);
#else /* CONFIG_GENERIC_PENDING_IRQ */
static inline bool irq_can_move_pcntxt(struct irq_data *data)
{
return true;
}
static inline bool irq_move_pending(struct irq_data *data)
{
return false;
}
static inline void
irq_copy_pending(struct irq_desc *desc, const struct cpumask *mask)
{
}
static inline void
irq_get_pending(struct cpumask *mask, struct irq_desc *desc)
{
}
static inline struct cpumask *irq_desc_get_pending_mask(struct irq_desc *desc)
{
return NULL;
}
static inline bool irq_fixup_move_pending(struct irq_desc *desc, bool fclear)
{
return false;
}
static inline void irq_force_complete_move(struct irq_desc *desc) { }
#endif /* !CONFIG_GENERIC_PENDING_IRQ */
#if !defined(CONFIG_IRQ_DOMAIN) || !defined(CONFIG_IRQ_DOMAIN_HIERARCHY)
static inline int irq_domain_activate_irq(struct irq_data *data, bool reserve)
{
irqd_set_activated(data);
return 0;
}
static inline void irq_domain_deactivate_irq(struct irq_data *data)
{
irqd_clr_activated(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
}