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Merge branch 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

Browse source 
This merges branches irq/genirq, irq/sparseirq-v4, timers/hpet-percpu
and x86/uv.

The sparseirq branch is just preliminary groundwork: no sparse IRQs are
actually implemented by this tree anymore - just the new APIs are added
while keeping the old way intact as well (the new APIs map 1:1 to
irq_desc[]).  The 'real' sparse IRQ support will then be a relatively
small patch ontop of this - with a v2.6.29 merge target.

* 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (178 commits)
  genirq: improve include files
  intr_remapping: fix typo
  io_apic: make irq_mis_count available on 64-bit too
  genirq: fix name space collisions of nr_irqs in arch/*
  genirq: fix name space collision of nr_irqs in autoprobe.c
  genirq: use iterators for irq_desc loops
  proc: fixup irq iterator
  genirq: add reverse iterator for irq_desc
  x86: move ack_bad_irq() to irq.c
  x86: unify show_interrupts() and proc helpers
  x86: cleanup show_interrupts
  genirq: cleanup the sparseirq modifications
  genirq: remove artifacts from sparseirq removal
  genirq: revert dynarray
  genirq: remove irq_to_desc_alloc
  genirq: remove sparse irq code
  genirq: use inline function for irq_to_desc
  genirq: consolidate nr_irqs and for_each_irq_desc()
  x86: remove sparse irq from Kconfig
  genirq: define nr_irqs for architectures with GENERIC_HARDIRQS=n
  ...
This commit is contained in:
Linus Torvalds 2008-10-20 13:22:50 -07:00
commit 9301975ec2
111 changed files with 3716 additions and 6226 deletions
Download patch file Download diff file Expand all files Collapse all files

1
include/linux/dmar.h
View file

@ -45,7 +45,6 @@ extern struct list_head dmar_drhd_units;
list_for_each_entry(drhd, &dmar_drhd_units, list)
extern int dmar_table_init(void);
extern int early_dmar_detect(void);
extern int dmar_dev_scope_init(void);
/* Intel IOMMU detection */

4
include/linux/efi.h
View file

@ -208,6 +208,9 @@ typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_siz
#define EFI_GLOBAL_VARIABLE_GUID \
EFI_GUID( 0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c )
#define UV_SYSTEM_TABLE_GUID \
EFI_GUID( 0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93 )
typedef struct {
efi_guid_t guid;
unsigned long table;
@ -255,6 +258,7 @@ extern struct efi {
unsigned long boot_info; /* boot info table */
unsigned long hcdp; /* HCDP table */
unsigned long uga; /* UGA table */
unsigned long uv_systab; /* UV system table */
efi_get_time_t *get_time;
efi_set_time_t *set_time;
efi_get_wakeup_time_t *get_wakeup_time;

1
include/linux/interrupt.h
View file

@ -8,6 +8,7 @@
#include <linux/preempt.h>
#include <linux/cpumask.h>
#include <linux/irqreturn.h>
#include <linux/irqnr.h>
#include <linux/hardirq.h>
#include <linux/sched.h>
#include <linux/irqflags.h>

56
include/linux/irq.h
View file

@ -18,6 +18,7 @@
#include <linux/spinlock.h>
#include <linux/cpumask.h>
#include <linux/irqreturn.h>
#include <linux/irqnr.h>
#include <linux/errno.h>
#include <asm/irq.h>
@ -152,6 +153,7 @@ struct irq_chip {
* @name: flow handler name for /proc/interrupts output
*/
struct irq_desc {
unsigned int irq;
irq_flow_handler_t handle_irq;
struct irq_chip *chip;
struct msi_desc *msi_desc;
@ -170,7 +172,7 @@ struct irq_desc {
cpumask_t affinity;
unsigned int cpu;
#endif
#if defined(CONFIG_GENERIC_PENDING_IRQ) || defined(CONFIG_IRQBALANCE)
#ifdef CONFIG_GENERIC_PENDING_IRQ
cpumask_t pending_mask;
#endif
#ifdef CONFIG_PROC_FS
@ -179,8 +181,14 @@ struct irq_desc {
const char *name;
} ____cacheline_internodealigned_in_smp;
extern struct irq_desc irq_desc[NR_IRQS];
static inline struct irq_desc *irq_to_desc(unsigned int irq)
{
return (irq < nr_irqs) ? irq_desc + irq : NULL;
}
/*
* Migration helpers for obsolete names, they will go away:
*/
@ -198,19 +206,15 @@ extern int setup_irq(unsigned int irq, struct irqaction *new);
#ifdef CONFIG_GENERIC_HARDIRQS
#ifndef handle_dynamic_tick
# define handle_dynamic_tick(a) do { } while (0)
#endif
#ifdef CONFIG_SMP
#if defined(CONFIG_GENERIC_PENDING_IRQ) || defined(CONFIG_IRQBALANCE)
#ifdef CONFIG_GENERIC_PENDING_IRQ
void set_pending_irq(unsigned int irq, cpumask_t mask);
void move_native_irq(int irq);
void move_masked_irq(int irq);
#else /* CONFIG_GENERIC_PENDING_IRQ || CONFIG_IRQBALANCE */
#else /* CONFIG_GENERIC_PENDING_IRQ */
static inline void move_irq(int irq)
{
@ -237,19 +241,14 @@ static inline void set_pending_irq(unsigned int irq, cpumask_t mask)
#endif /* CONFIG_SMP */
#ifdef CONFIG_IRQBALANCE
extern void set_balance_irq_affinity(unsigned int irq, cpumask_t mask);
#else
static inline void set_balance_irq_affinity(unsigned int irq, cpumask_t mask)
{
}
#endif
extern int no_irq_affinity;
static inline int irq_balancing_disabled(unsigned int irq)
{
return irq_desc[irq].status & IRQ_NO_BALANCING_MASK;
struct irq_desc *desc;
desc = irq_to_desc(irq);
return desc->status & IRQ_NO_BALANCING_MASK;
}
/* Handle irq action chains: */
@ -279,10 +278,8 @@ extern unsigned int __do_IRQ(unsigned int irq);
* irqchip-style controller then we call the ->handle_irq() handler,
* and it calls __do_IRQ() if it's attached to an irqtype-style controller.
*/
static inline void generic_handle_irq(unsigned int irq)
static inline void generic_handle_irq_desc(unsigned int irq, struct irq_desc *desc)
{
struct irq_desc *desc = irq_desc + irq;
#ifdef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ
desc->handle_irq(irq, desc);
#else
@ -293,6 +290,11 @@ static inline void generic_handle_irq(unsigned int irq)
#endif
}
static inline void generic_handle_irq(unsigned int irq)
{
generic_handle_irq_desc(irq, irq_to_desc(irq));
}
/* Handling of unhandled and spurious interrupts: */
extern void note_interrupt(unsigned int irq, struct irq_desc *desc,
int action_ret);
@ -325,7 +327,10 @@ __set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
static inline void __set_irq_handler_unlocked(int irq,
irq_flow_handler_t handler)
{
irq_desc[irq].handle_irq = handler;
struct irq_desc *desc;
desc = irq_to_desc(irq);
desc->handle_irq = handler;
}
/*
@ -353,13 +358,14 @@ extern void set_irq_noprobe(unsigned int irq);
extern void set_irq_probe(unsigned int irq);
/* Handle dynamic irq creation and destruction */
extern unsigned int create_irq_nr(unsigned int irq_want);
extern int create_irq(void);
extern void destroy_irq(unsigned int irq);
/* Test to see if a driver has successfully requested an irq */
static inline int irq_has_action(unsigned int irq)
{
struct irq_desc *desc = irq_desc + irq;
struct irq_desc *desc = irq_to_desc(irq);
return desc->action != NULL;
}
@ -374,10 +380,10 @@ extern int set_irq_chip_data(unsigned int irq, void *data);
extern int set_irq_type(unsigned int irq, unsigned int type);
extern int set_irq_msi(unsigned int irq, struct msi_desc *entry);
#define get_irq_chip(irq) (irq_desc[irq].chip)
#define get_irq_chip_data(irq) (irq_desc[irq].chip_data)
#define get_irq_data(irq) (irq_desc[irq].handler_data)
#define get_irq_msi(irq) (irq_desc[irq].msi_desc)
#define get_irq_chip(irq) (irq_to_desc(irq)->chip)
#define get_irq_chip_data(irq) (irq_to_desc(irq)->chip_data)
#define get_irq_data(irq) (irq_to_desc(irq)->handler_data)
#define get_irq_msi(irq) (irq_to_desc(irq)->msi_desc)
#endif /* CONFIG_GENERIC_HARDIRQS */

24
include/linux/irqnr.h Normal file
View file

@ -0,0 +1,24 @@
#ifndef _LINUX_IRQNR_H
#define _LINUX_IRQNR_H
#ifndef CONFIG_GENERIC_HARDIRQS
#include <asm/irq.h>
# define nr_irqs NR_IRQS
# define for_each_irq_desc(irq, desc) \
for (irq = 0; irq < nr_irqs; irq++)
#else
extern int nr_irqs;
# define for_each_irq_desc(irq, desc) \
for (irq = 0, desc = irq_desc; irq < nr_irqs; irq++, desc++)
# define for_each_irq_desc_reverse(irq, desc) \
for (irq = nr_irqs -1, desc = irq_desc + (nr_irqs -1 ); \
irq > 0; irq--, desc--)
#endif
#define for_each_irq_nr(irq) \
for (irq = 0; irq < nr_irqs; irq++)
#endif

20
include/linux/kernel_stat.h
View file

@ -39,15 +39,29 @@ DECLARE_PER_CPU(struct kernel_stat, kstat);
extern unsigned long long nr_context_switches(void);
struct irq_desc;
static inline void kstat_incr_irqs_this_cpu(unsigned int irq,
struct irq_desc *desc)
{
kstat_this_cpu.irqs[irq]++;
}
static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
{
return kstat_cpu(cpu).irqs[irq];
}
/*
* Number of interrupts per specific IRQ source, since bootup
*/
static inline int kstat_irqs(int irq)
static inline unsigned int kstat_irqs(unsigned int irq)
{
int cpu, sum = 0;
unsigned int sum = 0;
int cpu;
for_each_possible_cpu(cpu)
sum += kstat_cpu(cpu).irqs[irq];
sum += kstat_irqs_cpu(irq, cpu);
return sum;
}

2
include/linux/pci.h
View file

@ -725,7 +725,7 @@ enum pci_dma_burst_strategy {
};
struct msix_entry {
u16 vector; /* kernel uses to write allocated vector */
u32 vector; /* kernel uses to write allocated vector */
u16 entry; /* driver uses to specify entry, OS writes */
};