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Merge branch 'irq/for-x86' into irq/core

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Get the infrastructure patches which are required for x86/apic into core
This commit is contained in:
Thomas Gleixner 2015-06-20 19:14:31 +02:00
commit f05218651b
8 changed files with 88 additions and 44 deletions
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71
include/linux/irq.h
View File

@ -126,13 +126,21 @@ struct msi_desc;
struct irq_domain;
/**
* struct irq_data - per irq and irq chip data passed down to chip functions
* struct irq_common_data - per irq data shared by all irqchips
* @state_use_accessors: status information for irq chip functions.
* Use accessor functions to deal with it
*/
struct irq_common_data {
unsigned int state_use_accessors;
};
/**
* struct irq_data - per irq chip data passed down to chip functions
* @mask: precomputed bitmask for accessing the chip registers
* @irq: interrupt number
* @hwirq: hardware interrupt number, local to the interrupt domain
* @node: node index useful for balancing
* @state_use_accessors: status information for irq chip functions.
* Use accessor functions to deal with it
* @common: point to data shared by all irqchips
* @chip: low level interrupt hardware access
* @domain: Interrupt translation domain; responsible for mapping
* between hwirq number and linux irq number.
@ -153,7 +161,7 @@ struct irq_data {
unsigned int irq;
unsigned long hwirq;
unsigned int node;
unsigned int state_use_accessors;
struct irq_common_data *common;
struct irq_chip *chip;
struct irq_domain *domain;
#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
@ -166,7 +174,7 @@ struct irq_data {
};
/*
* Bit masks for irq_data.state
* Bit masks for irq_common_data.state_use_accessors
*
* IRQD_TRIGGER_MASK - Mask for the trigger type bits
* IRQD_SETAFFINITY_PENDING - Affinity setting is pending
@ -198,34 +206,36 @@ enum {
IRQD_WAKEUP_ARMED = (1 << 19),
};
#define __irqd_to_state(d) ((d)->common->state_use_accessors)
static inline bool irqd_is_setaffinity_pending(struct irq_data *d)
{
return d->state_use_accessors & IRQD_SETAFFINITY_PENDING;
return __irqd_to_state(d) & IRQD_SETAFFINITY_PENDING;
}
static inline bool irqd_is_per_cpu(struct irq_data *d)
{
return d->state_use_accessors & IRQD_PER_CPU;
return __irqd_to_state(d) & IRQD_PER_CPU;
}
static inline bool irqd_can_balance(struct irq_data *d)
{
return !(d->state_use_accessors & (IRQD_PER_CPU | IRQD_NO_BALANCING));
return !(__irqd_to_state(d) & (IRQD_PER_CPU | IRQD_NO_BALANCING));
}
static inline bool irqd_affinity_was_set(struct irq_data *d)
{
return d->state_use_accessors & IRQD_AFFINITY_SET;
return __irqd_to_state(d) & IRQD_AFFINITY_SET;
}
static inline void irqd_mark_affinity_was_set(struct irq_data *d)
{
d->state_use_accessors |= IRQD_AFFINITY_SET;
__irqd_to_state(d) |= IRQD_AFFINITY_SET;
}
static inline u32 irqd_get_trigger_type(struct irq_data *d)
{
return d->state_use_accessors & IRQD_TRIGGER_MASK;
return __irqd_to_state(d) & IRQD_TRIGGER_MASK;
}
/*
@ -233,43 +243,43 @@ static inline u32 irqd_get_trigger_type(struct irq_data *d)
*/
static inline void irqd_set_trigger_type(struct irq_data *d, u32 type)
{
d->state_use_accessors &= ~IRQD_TRIGGER_MASK;
d->state_use_accessors |= type & IRQD_TRIGGER_MASK;
__irqd_to_state(d) &= ~IRQD_TRIGGER_MASK;
__irqd_to_state(d) |= type & IRQD_TRIGGER_MASK;
}
static inline bool irqd_is_level_type(struct irq_data *d)
{
return d->state_use_accessors & IRQD_LEVEL;
return __irqd_to_state(d) & IRQD_LEVEL;
}
static inline bool irqd_is_wakeup_set(struct irq_data *d)
{
return d->state_use_accessors & IRQD_WAKEUP_STATE;
return __irqd_to_state(d) & IRQD_WAKEUP_STATE;
}
static inline bool irqd_can_move_in_process_context(struct irq_data *d)
{
return d->state_use_accessors & IRQD_MOVE_PCNTXT;
return __irqd_to_state(d) & IRQD_MOVE_PCNTXT;
}
static inline bool irqd_irq_disabled(struct irq_data *d)
{
return d->state_use_accessors & IRQD_IRQ_DISABLED;
return __irqd_to_state(d) & IRQD_IRQ_DISABLED;
}
static inline bool irqd_irq_masked(struct irq_data *d)
{
return d->state_use_accessors & IRQD_IRQ_MASKED;
return __irqd_to_state(d) & IRQD_IRQ_MASKED;
}
static inline bool irqd_irq_inprogress(struct irq_data *d)
{
return d->state_use_accessors & IRQD_IRQ_INPROGRESS;
return __irqd_to_state(d) & IRQD_IRQ_INPROGRESS;
}
static inline bool irqd_is_wakeup_armed(struct irq_data *d)
{
return d->state_use_accessors & IRQD_WAKEUP_ARMED;
return __irqd_to_state(d) & IRQD_WAKEUP_ARMED;
}
@ -280,12 +290,12 @@ static inline bool irqd_is_wakeup_armed(struct irq_data *d)
*/
static inline void irqd_set_chained_irq_inprogress(struct irq_data *d)
{
d->state_use_accessors |= IRQD_IRQ_INPROGRESS;
__irqd_to_state(d) |= IRQD_IRQ_INPROGRESS;
}
static inline void irqd_clr_chained_irq_inprogress(struct irq_data *d)
{
d->state_use_accessors &= ~IRQD_IRQ_INPROGRESS;
__irqd_to_state(d) &= ~IRQD_IRQ_INPROGRESS;
}
static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d)
@ -641,6 +651,23 @@ static inline u32 irq_get_trigger_type(unsigned int irq)
return d ? irqd_get_trigger_type(d) : 0;
}
static inline int irq_data_get_node(struct irq_data *d)
{
return d->node;
}
static inline struct cpumask *irq_get_affinity_mask(int irq)
{
struct irq_data *d = irq_get_irq_data(irq);
return d ? d->affinity : NULL;
}
static inline struct cpumask *irq_data_get_affinity_mask(struct irq_data *d)
{
return d->affinity;
}
unsigned int arch_dynirq_lower_bound(unsigned int from);
int __irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node,

12
include/linux/irqdesc.h
View File

@ -17,7 +17,7 @@ struct pt_regs;
/**
* struct irq_desc - interrupt descriptor
* @irq_data: per irq and chip data passed down to chip functions
* @irq_common_data: per irq and chip data passed down to chip functions
* @kstat_irqs: irq stats per cpu
* @handle_irq: highlevel irq-events handler
* @preflow_handler: handler called before the flow handler (currently used by sparc)
@ -47,6 +47,7 @@ struct pt_regs;
* @name: flow handler name for /proc/interrupts output
*/
struct irq_desc {
struct irq_common_data irq_common_data;
struct irq_data irq_data;
unsigned int __percpu *kstat_irqs;
irq_flow_handler_t handle_irq;
@ -93,6 +94,15 @@ struct irq_desc {
extern struct irq_desc irq_desc[NR_IRQS];
#endif
static inline struct irq_desc *irq_data_to_desc(struct irq_data *data)
{
#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
return irq_to_desc(data->irq);
#else
return container_of(data, struct irq_desc, irq_data);
#endif
}
static inline struct irq_data *irq_desc_get_irq_data(struct irq_desc *desc)
{
return &desc->irq_data;

17
kernel/irq/internals.h
View File

@ -59,8 +59,6 @@ enum {
#include "debug.h"
#include "settings.h"
#define irq_data_to_desc(data) container_of(data, struct irq_desc, irq_data)
extern int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
unsigned long flags);
extern void __disable_irq(struct irq_desc *desc, unsigned int irq);
@ -170,27 +168,27 @@ irq_put_desc_unlock(struct irq_desc *desc, unsigned long flags)
*/
static inline void irqd_set_move_pending(struct irq_data *d)
{
d->state_use_accessors |= IRQD_SETAFFINITY_PENDING;
__irqd_to_state(d) |= IRQD_SETAFFINITY_PENDING;
}
static inline void irqd_clr_move_pending(struct irq_data *d)
{
d->state_use_accessors &= ~IRQD_SETAFFINITY_PENDING;
__irqd_to_state(d) &= ~IRQD_SETAFFINITY_PENDING;
}
static inline void irqd_clear(struct irq_data *d, unsigned int mask)
{
d->state_use_accessors &= ~mask;
__irqd_to_state(d) &= ~mask;
}
static inline void irqd_set(struct irq_data *d, unsigned int mask)
{
d->state_use_accessors |= mask;
__irqd_to_state(d) |= mask;
}
static inline bool irqd_has_set(struct irq_data *d, unsigned int mask)
{
return d->state_use_accessors & mask;
return __irqd_to_state(d) & mask;
}
static inline void kstat_incr_irqs_this_cpu(unsigned int irq, struct irq_desc *desc)
@ -199,6 +197,11 @@ static inline void kstat_incr_irqs_this_cpu(unsigned int irq, struct irq_desc *d
__this_cpu_inc(kstat.irqs_sum);
}
static inline int irq_desc_get_node(struct irq_desc *desc)
{
return irq_data_get_node(&desc->irq_data);
}
#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);

9
kernel/irq/irqdesc.c
View File

@ -59,16 +59,10 @@ static void desc_smp_init(struct irq_desc *desc, int node)
#endif
}
static inline int desc_node(struct irq_desc *desc)
{
return desc->irq_data.node;
}
#else
static inline int
alloc_masks(struct irq_desc *desc, gfp_t gfp, int node) { return 0; }
static inline void desc_smp_init(struct irq_desc *desc, int node) { }
static inline int desc_node(struct irq_desc *desc) { return 0; }
#endif
static void desc_set_defaults(unsigned int irq, struct irq_desc *desc, int node,
@ -76,6 +70,7 @@ static void desc_set_defaults(unsigned int irq, struct irq_desc *desc, int node,
{
int cpu;
desc->irq_data.common = &desc->irq_common_data;
desc->irq_data.irq = irq;
desc->irq_data.chip = &no_irq_chip;
desc->irq_data.chip_data = NULL;
@ -299,7 +294,7 @@ static void free_desc(unsigned int irq)
unsigned long flags;
raw_spin_lock_irqsave(&desc->lock, flags);
desc_set_defaults(irq, desc, desc_node(desc), NULL);
desc_set_defaults(irq, desc, irq_desc_get_node(desc), NULL);
raw_spin_unlock_irqrestore(&desc->lock, flags);
}

4
kernel/irq/irqdomain.c
View File

@ -830,10 +830,12 @@ static struct irq_data *irq_domain_insert_irq_data(struct irq_domain *domain,
{
struct irq_data *irq_data;
irq_data = kzalloc_node(sizeof(*irq_data), GFP_KERNEL, child->node);
irq_data = kzalloc_node(sizeof(*irq_data), GFP_KERNEL,
irq_data_get_node(child));
if (irq_data) {
child->parent_data = irq_data;
irq_data->irq = child->irq;
irq_data->common = child->common;
irq_data->node = child->node;
irq_data->domain = domain;
}

2
kernel/irq/manage.c
View File

@ -363,7 +363,7 @@ static int
setup_affinity(unsigned int irq, struct irq_desc *desc, struct cpumask *mask)
{
struct cpumask *set = irq_default_affinity;
int node = desc->irq_data.node;
int node = irq_desc_get_node(desc);
/* Excludes PER_CPU and NO_BALANCE interrupts */
if (!irq_can_set_affinity(irq))

15
kernel/irq/migration.c
View File

@ -7,21 +7,21 @@
void irq_move_masked_irq(struct irq_data *idata)
{
struct irq_desc *desc = irq_data_to_desc(idata);
struct irq_chip *chip = idata->chip;
struct irq_chip *chip = desc->irq_data.chip;
if (likely(!irqd_is_setaffinity_pending(&desc->irq_data)))
return;
irqd_clr_move_pending(&desc->irq_data);
/*
* Paranoia: cpu-local interrupts shouldn't be calling in here anyway.
*/
if (!irqd_can_balance(&desc->irq_data)) {
if (irqd_is_per_cpu(&desc->irq_data)) {
WARN_ON(1);
return;
}
irqd_clr_move_pending(&desc->irq_data);
if (unlikely(cpumask_empty(desc->pending_mask)))
return;
@ -52,6 +52,13 @@ void irq_move_irq(struct irq_data *idata)
{
bool masked;
/*
* Get top level irq_data when CONFIG_IRQ_DOMAIN_HIERARCHY is enabled,
* and it should be optimized away when CONFIG_IRQ_DOMAIN_HIERARCHY is
* disabled. So we avoid an "#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY" here.
*/
idata = irq_desc_get_irq_data(irq_data_to_desc(idata));
if (likely(!irqd_is_setaffinity_pending(idata)))
return;

2
kernel/irq/proc.c
View File

@ -241,7 +241,7 @@ static int irq_node_proc_show(struct seq_file *m, void *v)
{
struct irq_desc *desc = irq_to_desc((long) m->private);
seq_printf(m, "%d\n", desc->irq_data.node);
seq_printf(m, "%d\n", irq_desc_get_node(desc));
return 0;
}