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authorLinus Torvalds <torvalds@linux-foundation.org>2008-10-20 13:22:50 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-20 13:23:01 -0700
commit9301975ec251bab1ad7cfcb84a688b26187e4e4a (patch)
tree91e48be0bdc67cbcb75bc8a299a3dcf168e0a814 /include/linux
parent7110879cf2afbfb7af79675f5ff109e63d631c25 (diff)
parentdd3a1db900f2a215a7d7dd71b836e149a6cf5fed (diff)
Merge branch 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
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 ...
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/dmar.h1
-rw-r--r--include/linux/efi.h4
-rw-r--r--include/linux/interrupt.h1
-rw-r--r--include/linux/irq.h56
-rw-r--r--include/linux/irqnr.h24
-rw-r--r--include/linux/kernel_stat.h20
-rw-r--r--include/linux/pci.h2
7 files changed, 78 insertions, 30 deletions
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index c360c558e59..f1984fc3e06 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -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 */
diff --git a/include/linux/efi.h b/include/linux/efi.h
index 807373d467f..bb66feb164b 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -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;
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 35a61dc60d5..f58a0cf8929 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -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>
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 8d9411bc60f..d058c57be02 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -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 */
diff --git a/include/linux/irqnr.h b/include/linux/irqnr.h
new file mode 100644
index 00000000000..3171ddc3b39
--- /dev/null
+++ b/include/linux/irqnr.h
@@ -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
diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h
index cac3750cd65..4a145caeee0 100644
--- a/include/linux/kernel_stat.h
+++ b/include/linux/kernel_stat.h
@@ -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;
}
diff --git a/include/linux/pci.h b/include/linux/pci.h
index acf8f24037c..7f3f65ee4da 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -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 */
};