genirq: revert dynarray
Revert the dynarray changes. They need more thought and polishing.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/Kconfig b/arch/Kconfig
index c8a7c2e..071004d3 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -102,7 +102,3 @@
help
The <linux/clk.h> calls support software clock gating and
thus are a key power management tool on many systems.
-
-config HAVE_DYN_ARRAY
- def_bool n
-
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 8636ddf..8da6123 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -33,7 +33,6 @@
select HAVE_ARCH_TRACEHOOK
select HAVE_GENERIC_DMA_COHERENT if X86_32
select HAVE_EFFICIENT_UNALIGNED_ACCESS
- select HAVE_DYN_ARRAY
config ARCH_DEFCONFIG
string
diff --git a/arch/x86/kernel/io_apic.c b/arch/x86/kernel/io_apic.c
index e03bc0f..6f80dc2 100644
--- a/arch/x86/kernel/io_apic.c
+++ b/arch/x86/kernel/io_apic.c
@@ -107,7 +107,6 @@
}
early_param("noapic", parse_noapic);
-struct irq_cfg;
struct irq_pin_list;
struct irq_cfg {
unsigned int irq;
@@ -120,7 +119,7 @@
};
/* irq_cfg is indexed by the sum of all RTEs in all I/O APICs. */
-static struct irq_cfg irq_cfg_legacy[] __initdata = {
+static struct irq_cfg irq_cfgx[NR_IRQS] = {
[0] = { .irq = 0, .domain = CPU_MASK_ALL, .vector = IRQ0_VECTOR, },
[1] = { .irq = 1, .domain = CPU_MASK_ALL, .vector = IRQ1_VECTOR, },
[2] = { .irq = 2, .domain = CPU_MASK_ALL, .vector = IRQ2_VECTOR, },
@@ -139,49 +138,27 @@
[15] = { .irq = 15, .domain = CPU_MASK_ALL, .vector = IRQ15_VECTOR, },
};
-static struct irq_cfg irq_cfg_init = { .irq = -1U, };
-
-static void init_one_irq_cfg(struct irq_cfg *cfg)
-{
- memcpy(cfg, &irq_cfg_init, sizeof(struct irq_cfg));
-}
-
-static struct irq_cfg *irq_cfgx;
-
-static void __init init_work(void *data)
-{
- struct dyn_array *da = data;
- struct irq_cfg *cfg;
- int legacy_count;
- int i;
-
- cfg = *da->name;
-
- memcpy(cfg, irq_cfg_legacy, sizeof(irq_cfg_legacy));
-
- legacy_count = ARRAY_SIZE(irq_cfg_legacy);
- for (i = legacy_count; i < *da->nr; i++)
- init_one_irq_cfg(&cfg[i]);
-}
-
#define for_each_irq_cfg(irq, cfg) \
- for (irq = 0, cfg = &irq_cfgx[irq]; irq < nr_irqs; irq++, cfg = &irq_cfgx[irq])
+ for (irq = 0, cfg = irq_cfgx; irq < nr_irqs; irq++, cfg++)
-DEFINE_DYN_ARRAY(irq_cfgx, sizeof(struct irq_cfg), nr_irqs, PAGE_SIZE, init_work);
-
-struct irq_cfg *irq_cfg(unsigned int irq)
+static struct irq_cfg *irq_cfg(unsigned int irq)
{
- if (irq < nr_irqs)
- return &irq_cfgx[irq];
-
- return NULL;
+ return irq < nr_irqs ? irq_cfgx + irq : NULL;
}
-struct irq_cfg *irq_cfg_alloc(unsigned int irq)
+
+static struct irq_cfg *irq_cfg_alloc(unsigned int irq)
{
return irq_cfg(irq);
}
/*
+ * Rough estimation of how many shared IRQs there are, can be changed
+ * anytime.
+ */
+#define MAX_PLUS_SHARED_IRQS NR_IRQS
+#define PIN_MAP_SIZE (MAX_PLUS_SHARED_IRQS + NR_IRQS)
+
+/*
* This is performance-critical, we want to do it O(1)
*
* the indexing order of this array favors 1:1 mappings
@@ -193,59 +170,29 @@
struct irq_pin_list *next;
};
-static struct irq_pin_list *irq_2_pin_head;
-/* fill one page ? */
-static int nr_irq_2_pin = 0x100;
+static struct irq_pin_list irq_2_pin_head[PIN_MAP_SIZE];
static struct irq_pin_list *irq_2_pin_ptr;
-static void __init irq_2_pin_init_work(void *data)
+
+static void __init irq_2_pin_init(void)
{
- struct dyn_array *da = data;
- struct irq_pin_list *pin;
+ struct irq_pin_list *pin = irq_2_pin_head;
int i;
- pin = *da->name;
-
- for (i = 1; i < *da->nr; i++)
+ for (i = 1; i < PIN_MAP_SIZE; i++)
pin[i-1].next = &pin[i];
irq_2_pin_ptr = &pin[0];
}
-DEFINE_DYN_ARRAY(irq_2_pin_head, sizeof(struct irq_pin_list), nr_irq_2_pin, PAGE_SIZE, irq_2_pin_init_work);
static struct irq_pin_list *get_one_free_irq_2_pin(void)
{
- struct irq_pin_list *pin;
- int i;
-
- pin = irq_2_pin_ptr;
-
- if (pin) {
- irq_2_pin_ptr = pin->next;
- pin->next = NULL;
- return pin;
- }
-
- /*
- * we run out of pre-allocate ones, allocate more
- */
- printk(KERN_DEBUG "try to get more irq_2_pin %d\n", nr_irq_2_pin);
-
- if (after_bootmem)
- pin = kzalloc(sizeof(struct irq_pin_list)*nr_irq_2_pin,
- GFP_ATOMIC);
- else
- pin = __alloc_bootmem_nopanic(sizeof(struct irq_pin_list) *
- nr_irq_2_pin, PAGE_SIZE, 0);
+ struct irq_pin_list *pin = irq_2_pin_ptr;
if (!pin)
panic("can not get more irq_2_pin\n");
- for (i = 1; i < nr_irq_2_pin; i++)
- pin[i-1].next = &pin[i];
-
irq_2_pin_ptr = pin->next;
pin->next = NULL;
-
return pin;
}
@@ -284,8 +231,9 @@
static inline void io_apic_modify(unsigned int apic, unsigned int reg, unsigned int value)
{
struct io_apic __iomem *io_apic = io_apic_base(apic);
- if (sis_apic_bug)
- writel(reg, &io_apic->index);
+
+ if (sis_apic_bug)
+ writel(reg, &io_apic->index);
writel(value, &io_apic->data);
}
@@ -1044,11 +992,11 @@
while (i < apic)
irq += nr_ioapic_registers[i++];
irq += pin;
- /*
+ /*
* For MPS mode, so far only needed by ES7000 platform
*/
- if (ioapic_renumber_irq)
- irq = ioapic_renumber_irq(apic, irq);
+ if (ioapic_renumber_irq)
+ irq = ioapic_renumber_irq(apic, irq);
}
#ifdef CONFIG_X86_32
@@ -1232,19 +1180,19 @@
#ifdef CONFIG_X86_32
static inline int IO_APIC_irq_trigger(int irq)
{
- int apic, idx, pin;
+ int apic, idx, pin;
- for (apic = 0; apic < nr_ioapics; apic++) {
- for (pin = 0; pin < nr_ioapic_registers[apic]; pin++) {
- idx = find_irq_entry(apic, pin, mp_INT);
- if ((idx != -1) && (irq == pin_2_irq(idx, apic, pin)))
- return irq_trigger(idx);
- }
- }
- /*
+ for (apic = 0; apic < nr_ioapics; apic++) {
+ for (pin = 0; pin < nr_ioapic_registers[apic]; pin++) {
+ idx = find_irq_entry(apic, pin, mp_INT);
+ if ((idx != -1) && (irq == pin_2_irq(idx, apic, pin)))
+ return irq_trigger(idx);
+ }
+ }
+ /*
* nonexistent IRQs are edge default
*/
- return 0;
+ return 0;
}
#else
static inline int IO_APIC_irq_trigger(int irq)
@@ -1509,8 +1457,8 @@
reg_01.raw = io_apic_read(apic, 1);
if (reg_01.bits.version >= 0x10)
reg_02.raw = io_apic_read(apic, 2);
- if (reg_01.bits.version >= 0x20)
- reg_03.raw = io_apic_read(apic, 3);
+ if (reg_01.bits.version >= 0x20)
+ reg_03.raw = io_apic_read(apic, 3);
spin_unlock_irqrestore(&ioapic_lock, flags);
printk("\n");
@@ -2089,9 +2037,9 @@
#else
static int ioapic_retrigger_irq(unsigned int irq)
{
- send_IPI_self(irq_cfg(irq)->vector);
+ send_IPI_self(irq_cfg(irq)->vector);
- return 1;
+ return 1;
}
#endif
@@ -2189,7 +2137,7 @@
if (io_apic_level_ack_pending(irq)) {
/*
- * Interrupt in progress. Migrating irq now will change the
+ * Interrupt in progress. Migrating irq now will change the
* vector information in the IO-APIC RTE and that will confuse
* the EOI broadcast performed by cpu.
* So, delay the irq migration to the next instance.
@@ -2426,28 +2374,28 @@
}
static struct irq_chip ioapic_chip __read_mostly = {
- .name = "IO-APIC",
- .startup = startup_ioapic_irq,
- .mask = mask_IO_APIC_irq,
- .unmask = unmask_IO_APIC_irq,
- .ack = ack_apic_edge,
- .eoi = ack_apic_level,
+ .name = "IO-APIC",
+ .startup = startup_ioapic_irq,
+ .mask = mask_IO_APIC_irq,
+ .unmask = unmask_IO_APIC_irq,
+ .ack = ack_apic_edge,
+ .eoi = ack_apic_level,
#ifdef CONFIG_SMP
- .set_affinity = set_ioapic_affinity_irq,
+ .set_affinity = set_ioapic_affinity_irq,
#endif
.retrigger = ioapic_retrigger_irq,
};
#ifdef CONFIG_INTR_REMAP
static struct irq_chip ir_ioapic_chip __read_mostly = {
- .name = "IR-IO-APIC",
- .startup = startup_ioapic_irq,
- .mask = mask_IO_APIC_irq,
- .unmask = unmask_IO_APIC_irq,
- .ack = ack_x2apic_edge,
- .eoi = ack_x2apic_level,
+ .name = "IR-IO-APIC",
+ .startup = startup_ioapic_irq,
+ .mask = mask_IO_APIC_irq,
+ .unmask = unmask_IO_APIC_irq,
+ .ack = ack_x2apic_edge,
+ .eoi = ack_x2apic_level,
#ifdef CONFIG_SMP
- .set_affinity = set_ir_ioapic_affinity_irq,
+ .set_affinity = set_ir_ioapic_affinity_irq,
#endif
.retrigger = ioapic_retrigger_irq,
};
@@ -2636,8 +2584,8 @@
local_irq_save(flags);
- ver = apic_read(APIC_LVR);
- ver = GET_APIC_VERSION(ver);
+ ver = apic_read(APIC_LVR);
+ ver = GET_APIC_VERSION(ver);
/*
* get/set the timer IRQ vector:
@@ -2822,12 +2770,12 @@
io_apic_irqs = ~PIC_IRQS;
apic_printk(APIC_VERBOSE, "ENABLING IO-APIC IRQs\n");
- /*
+ /*
* Set up IO-APIC IRQ routing.
*/
#ifdef CONFIG_X86_32
- if (!acpi_ioapic)
- setup_ioapic_ids_from_mpc();
+ if (!acpi_ioapic)
+ setup_ioapic_ids_from_mpc();
#endif
sync_Arb_IDs();
setup_IO_APIC_irqs();
@@ -2842,9 +2790,9 @@
static int __init io_apic_bug_finalize(void)
{
- if (sis_apic_bug == -1)
- sis_apic_bug = 0;
- return 0;
+ if (sis_apic_bug == -1)
+ sis_apic_bug = 0;
+ return 0;
}
late_initcall(io_apic_bug_finalize);
@@ -3199,7 +3147,7 @@
if (index < 0) {
printk(KERN_ERR
"Unable to allocate %d IRTE for PCI %s\n", nvec,
- pci_name(dev));
+ pci_name(dev));
return -ENOSPC;
}
return index;
@@ -3885,23 +3833,24 @@
void __init ioapic_init_mappings(void)
{
unsigned long ioapic_phys, idx = FIX_IO_APIC_BASE_0;
- int i;
struct resource *ioapic_res;
+ int i;
+ irq_2_pin_init();
ioapic_res = ioapic_setup_resources();
for (i = 0; i < nr_ioapics; i++) {
if (smp_found_config) {
ioapic_phys = mp_ioapics[i].mp_apicaddr;
#ifdef CONFIG_X86_32
- if (!ioapic_phys) {
- printk(KERN_ERR
- "WARNING: bogus zero IO-APIC "
- "address found in MPTABLE, "
- "disabling IO/APIC support!\n");
- smp_found_config = 0;
- skip_ioapic_setup = 1;
- goto fake_ioapic_page;
- }
+ if (!ioapic_phys) {
+ printk(KERN_ERR
+ "WARNING: bogus zero IO-APIC "
+ "address found in MPTABLE, "
+ "disabling IO/APIC support!\n");
+ smp_found_config = 0;
+ skip_ioapic_setup = 1;
+ goto fake_ioapic_page;
+ }
#endif
} else {
#ifdef CONFIG_X86_32
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index 2b7dab6..410c88f 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -140,7 +140,7 @@
*/
void __init setup_per_cpu_areas(void)
{
- ssize_t size, old_size, da_size;
+ ssize_t size, old_size;
char *ptr;
int cpu;
unsigned long align = 1;
@@ -150,9 +150,8 @@
/* Copy section for each CPU (we discard the original) */
old_size = PERCPU_ENOUGH_ROOM;
- da_size = per_cpu_dyn_array_size(&align);
align = max_t(unsigned long, PAGE_SIZE, align);
- size = roundup(old_size + da_size, align);
+ size = roundup(old_size, align);
printk(KERN_INFO "PERCPU: Allocating %zd bytes of per cpu data\n",
size);
@@ -182,9 +181,6 @@
#endif
per_cpu_offset(cpu) = ptr - __per_cpu_start;
memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start);
-
- per_cpu_alloc_dyn_array(cpu, ptr + old_size);
-
}
printk(KERN_DEBUG "NR_CPUS: %d, nr_cpu_ids: %d, nr_node_ids %d\n",
diff --git a/arch/x86/kernel/visws_quirks.c b/arch/x86/kernel/visws_quirks.c
index 817aa55..0c9667f 100644
--- a/arch/x86/kernel/visws_quirks.c
+++ b/arch/x86/kernel/visws_quirks.c
@@ -633,7 +633,7 @@
/*
* handle this 'virtual interrupt' as a Cobalt one now.
*/
- kstat_irqs_this_cpu(desc)++;
+ kstat_incr_irqs_this_cpu(realirq, desc);
if (likely(desc->action != NULL))
handle_IRQ_event(realirq, desc->action);
diff --git a/arch/x86/kernel/vmlinux_32.lds.S b/arch/x86/kernel/vmlinux_32.lds.S
index c36007a..a9b8560 100644
--- a/arch/x86/kernel/vmlinux_32.lds.S
+++ b/arch/x86/kernel/vmlinux_32.lds.S
@@ -145,7 +145,6 @@
*(.x86_cpu_dev.init)
__x86_cpu_dev_end = .;
}
- DYN_ARRAY_INIT(8)
SECURITY_INIT
. = ALIGN(4);
.altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) {
diff --git a/arch/x86/kernel/vmlinux_64.lds.S b/arch/x86/kernel/vmlinux_64.lds.S
index 30973db..3245ad7 100644
--- a/arch/x86/kernel/vmlinux_64.lds.S
+++ b/arch/x86/kernel/vmlinux_64.lds.S
@@ -174,8 +174,6 @@
}
__x86_cpu_dev_end = .;
- DYN_ARRAY_INIT(8)
-
SECURITY_INIT
. = ALIGN(8);
diff --git a/arch/x86/xen/spinlock.c b/arch/x86/xen/spinlock.c
index bb6bc72..5601506 100644
--- a/arch/x86/xen/spinlock.c
+++ b/arch/x86/xen/spinlock.c
@@ -241,7 +241,7 @@
ADD_STATS(taken_slow_spurious, !xen_test_irq_pending(irq));
} while (!xen_test_irq_pending(irq)); /* check for spurious wakeups */
- kstat_irqs_this_cpu(irq_to_desc(irq))++;
+ kstat_incr_irqs_this_cpu(irq, irq_to_desc(irq));
out:
raw_local_irq_restore(flags);
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 9ce8021..1137d29 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -558,12 +558,7 @@
unsigned dont_count_entropy:1;
};
-#ifdef CONFIG_HAVE_DYN_ARRAY
-static struct timer_rand_state **irq_timer_state;
-DEFINE_DYN_ARRAY(irq_timer_state, sizeof(struct timer_rand_state *), nr_irqs, PAGE_SIZE, NULL);
-#else
static struct timer_rand_state *irq_timer_state[NR_IRQS];
-#endif
static struct timer_rand_state *get_timer_rand_state(unsigned int irq)
{
diff --git a/drivers/pci/intr_remapping.c b/drivers/pci/intr_remapping.c
index 0f43b26..950769e 100644
--- a/drivers/pci/intr_remapping.c
+++ b/drivers/pci/intr_remapping.c
@@ -19,20 +19,13 @@
u8 irte_mask;
};
-#ifdef CONFIG_HAVE_DYN_ARRAY
-static struct irq_2_iommu *irq_2_iommuX;
-DEFINE_DYN_ARRAY(irq_2_iommuX, sizeof(struct irq_2_iommu), nr_irqs, PAGE_SIZE, NULL);
-#else
static struct irq_2_iommu irq_2_iommuX[NR_IRQS];
-#endif
static struct irq_2_iommu *irq_2_iommu(unsigned int irq)
{
- if (irq < nr_irqs)
- return &irq_2_iommuX[irq];
-
- return NULL;
+ return (irq < nr_irqs) ?: irq_2_iommuX + irq : NULL;
}
+
static struct irq_2_iommu *irq_2_iommu_alloc(unsigned int irq)
{
return irq_2_iommu(irq);
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index c68eda9..7440a0d 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -210,19 +210,6 @@
* All archs are supposed to use RO_DATA() */
#define RODATA RO_DATA(4096)
-#define DYN_ARRAY_INIT(align) \
- . = ALIGN((align)); \
- .dyn_array.init : AT(ADDR(.dyn_array.init) - LOAD_OFFSET) { \
- VMLINUX_SYMBOL(__dyn_array_start) = .; \
- *(.dyn_array.init) \
- VMLINUX_SYMBOL(__dyn_array_end) = .; \
- } \
- . = ALIGN((align)); \
- .per_cpu_dyn_array.init : AT(ADDR(.per_cpu_dyn_array.init) - LOAD_OFFSET) { \
- VMLINUX_SYMBOL(__per_cpu_dyn_array_start) = .; \
- *(.per_cpu_dyn_array.init) \
- VMLINUX_SYMBOL(__per_cpu_dyn_array_end) = .; \
- }
#define SECURITY_INIT \
.security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
VMLINUX_SYMBOL(__security_initcall_start) = .; \
diff --git a/include/linux/init.h b/include/linux/init.h
index 59fbb4a..70ad53e 100644
--- a/include/linux/init.h
+++ b/include/linux/init.h
@@ -247,49 +247,6 @@
/* Relies on boot_command_line being set */
void __init parse_early_param(void);
-struct dyn_array {
- void **name;
- unsigned long size;
- unsigned int *nr;
- unsigned long align;
- void (*init_work)(void *);
-};
-extern struct dyn_array *__dyn_array_start[], *__dyn_array_end[];
-extern struct dyn_array *__per_cpu_dyn_array_start[], *__per_cpu_dyn_array_end[];
-
-#define DEFINE_DYN_ARRAY_ADDR(nameX, addrX, sizeX, nrX, alignX, init_workX) \
- static struct dyn_array __dyn_array_##nameX __initdata = \
- { .name = (void **)&(nameX),\
- .size = sizeX,\
- .nr = &(nrX),\
- .align = alignX,\
- .init_work = init_workX,\
- }; \
- static struct dyn_array *__dyn_array_ptr_##nameX __used \
- __attribute__((__section__(".dyn_array.init"))) = \
- &__dyn_array_##nameX
-
-#define DEFINE_DYN_ARRAY(nameX, sizeX, nrX, alignX, init_workX) \
- DEFINE_DYN_ARRAY_ADDR(nameX, nameX, sizeX, nrX, alignX, init_workX)
-
-#define DEFINE_PER_CPU_DYN_ARRAY_ADDR(nameX, addrX, sizeX, nrX, alignX, init_workX) \
- static struct dyn_array __per_cpu_dyn_array_##nameX __initdata = \
- { .name = (void **)&(addrX),\
- .size = sizeX,\
- .nr = &(nrX),\
- .align = alignX,\
- .init_work = init_workX,\
- }; \
- static struct dyn_array *__per_cpu_dyn_array_ptr_##nameX __used \
- __attribute__((__section__(".per_cpu_dyn_array.init"))) = \
- &__per_cpu_dyn_array_##nameX
-
-#define DEFINE_PER_CPU_DYN_ARRAY(nameX, sizeX, nrX, alignX, init_workX) \
- DEFINE_PER_CPU_DYN_ARRAY_ADDR(nameX, nameX, nrX, alignX, init_workX)
-
-extern void pre_alloc_dyn_array(void);
-extern unsigned long per_cpu_dyn_array_size(unsigned long *align);
-extern void per_cpu_alloc_dyn_array(int cpu, char *ptr);
#endif /* __ASSEMBLY__ */
/**
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 3f33c77..38bf89f2 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -139,8 +139,6 @@
const char *typename;
};
-struct timer_rand_state;
-struct irq_2_iommu;
/**
* struct irq_desc - interrupt descriptor
*
@@ -167,9 +165,6 @@
*/
struct irq_desc {
unsigned int irq;
-#ifdef CONFIG_HAVE_DYN_ARRAY
- unsigned int *kstat_irqs;
-#endif
irq_flow_handler_t handle_irq;
struct irq_chip *chip;
struct msi_desc *msi_desc;
@@ -198,23 +193,13 @@
} ____cacheline_internodealigned_in_smp;
-#ifndef CONFIG_HAVE_DYN_ARRAY
-/* could be removed if we get rid of all irq_desc reference */
extern struct irq_desc irq_desc[NR_IRQS];
-#else
-extern struct irq_desc *irq_desc;
-#endif
static inline struct irq_desc *irq_to_desc(unsigned int irq)
{
return (irq < nr_irqs) ? irq_desc + irq : NULL;
}
-#ifdef CONFIG_HAVE_DYN_ARRAY
-#define kstat_irqs_this_cpu(DESC) \
- ((DESC)->kstat_irqs[smp_processor_id()])
-#endif
-
/*
* Migration helpers for obsolete names, they will go away:
*/
diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h
index 21249d8..a9d0d36 100644
--- a/include/linux/kernel_stat.h
+++ b/include/linux/kernel_stat.h
@@ -28,9 +28,7 @@
struct kernel_stat {
struct cpu_usage_stat cpustat;
-#ifndef CONFIG_HAVE_DYN_ARRAY
unsigned int irqs[NR_IRQS];
-#endif
};
DECLARE_PER_CPU(struct kernel_stat, kstat);
@@ -41,20 +39,18 @@
extern unsigned long long nr_context_switches(void);
-#ifndef CONFIG_HAVE_DYN_ARRAY
-#define kstat_irqs_this_cpu(irq) \
- (kstat_this_cpu.irqs[irq])
-#endif
+struct irq_desc;
+static inline void kstat_incr_irqs_this_cpu(unsigned int irq,
+ struct irq_desc *desc)
+{
+ kstat_this_cpu.irqs[irq]++;
+}
-#ifndef CONFIG_HAVE_DYN_ARRAY
static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
{
return kstat_cpu(cpu).irqs[irq];
}
-#else
-extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu);
-#endif
/*
* Number of interrupts per specific IRQ source, since bootup
diff --git a/init/Makefile b/init/Makefile
index dc5eeca..4a243df 100644
--- a/init/Makefile
+++ b/init/Makefile
@@ -2,7 +2,7 @@
# Makefile for the linux kernel.
#
-obj-y := main.o dyn_array.o version.o mounts.o
+obj-y := main.o version.o mounts.o
ifneq ($(CONFIG_BLK_DEV_INITRD),y)
obj-y += noinitramfs.o
else
diff --git a/init/dyn_array.c b/init/dyn_array.c
deleted file mode 100644
index c8d5e2a..0000000
--- a/init/dyn_array.c
+++ /dev/null
@@ -1,120 +0,0 @@
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/kallsyms.h>
-#include <linux/init.h>
-#include <linux/bootmem.h>
-#include <linux/irq.h>
-
-void __init pre_alloc_dyn_array(void)
-{
-#ifdef CONFIG_HAVE_DYN_ARRAY
- unsigned long total_size = 0, size, phys;
- unsigned long max_align = 1;
- struct dyn_array **daa;
- char *ptr;
-
- /* get the total size at first */
- for (daa = __dyn_array_start ; daa < __dyn_array_end; daa++) {
- struct dyn_array *da = *daa;
-
- printk(KERN_DEBUG "dyn_array %pF size:%#lx nr:%d align:%#lx\n",
- da->name, da->size, *da->nr, da->align);
- size = da->size * (*da->nr);
- total_size += roundup(size, da->align);
- if (da->align > max_align)
- max_align = da->align;
- }
- if (total_size)
- printk(KERN_DEBUG "dyn_array total_size: %#lx\n",
- total_size);
- else
- return;
-
- /* allocate them all together */
- max_align = max_t(unsigned long, max_align, PAGE_SIZE);
- ptr = __alloc_bootmem(total_size, max_align, 0);
- phys = virt_to_phys(ptr);
-
- for (daa = __dyn_array_start ; daa < __dyn_array_end; daa++) {
- struct dyn_array *da = *daa;
-
- size = da->size * (*da->nr);
- phys = roundup(phys, da->align);
- printk(KERN_DEBUG "dyn_array %pF ==> [%#lx - %#lx]\n",
- da->name, phys, phys + size);
- *da->name = phys_to_virt(phys);
-
- phys += size;
-
- if (da->init_work)
- da->init_work(da);
- }
-#else
-#ifdef CONFIG_GENERIC_HARDIRQS
- unsigned int i;
-
- for (i = 0; i < NR_IRQS; i++)
- irq_desc[i].irq = i;
-#endif
-#endif
-}
-
-unsigned long __init per_cpu_dyn_array_size(unsigned long *align)
-{
- unsigned long total_size = 0;
-#ifdef CONFIG_HAVE_DYN_ARRAY
- unsigned long size;
- struct dyn_array **daa;
- unsigned max_align = 1;
-
- for (daa = __per_cpu_dyn_array_start ; daa < __per_cpu_dyn_array_end; daa++) {
- struct dyn_array *da = *daa;
-
- printk(KERN_DEBUG "per_cpu_dyn_array %pF size:%#lx nr:%d align:%#lx\n",
- da->name, da->size, *da->nr, da->align);
- size = da->size * (*da->nr);
- total_size += roundup(size, da->align);
- if (da->align > max_align)
- max_align = da->align;
- }
- if (total_size) {
- printk(KERN_DEBUG "per_cpu_dyn_array total_size: %#lx\n",
- total_size);
- *align = max_align;
- }
-#endif
- return total_size;
-}
-
-#ifdef CONFIG_SMP
-void __init per_cpu_alloc_dyn_array(int cpu, char *ptr)
-{
-#ifdef CONFIG_HAVE_DYN_ARRAY
- unsigned long size, phys;
- struct dyn_array **daa;
- unsigned long addr;
- void **array;
-
- phys = virt_to_phys(ptr);
- for (daa = __per_cpu_dyn_array_start ; daa < __per_cpu_dyn_array_end; daa++) {
- struct dyn_array *da = *daa;
-
- size = da->size * (*da->nr);
- phys = roundup(phys, da->align);
- printk(KERN_DEBUG "per_cpu_dyn_array %pF ==> [%#lx - %#lx]\n",
- da->name, phys, phys + size);
-
- addr = (unsigned long)da->name;
- addr += per_cpu_offset(cpu);
- array = (void **)addr;
- *array = phys_to_virt(phys);
- *da->name = *array; /* so init_work could use it directly */
-
- phys += size;
-
- if (da->init_work)
- da->init_work(da);
- }
-#endif
-}
-#endif
diff --git a/init/main.c b/init/main.c
index e81cf42..27f6bf6 100644
--- a/init/main.c
+++ b/init/main.c
@@ -391,23 +391,17 @@
static void __init setup_per_cpu_areas(void)
{
- unsigned long size, i, old_size;
+ unsigned long size, i;
char *ptr;
unsigned long nr_possible_cpus = num_possible_cpus();
- unsigned long align = 1;
- unsigned da_size;
/* Copy section for each CPU (we discard the original) */
- old_size = PERCPU_ENOUGH_ROOM;
- da_size = per_cpu_dyn_array_size(&align);
- align = max_t(unsigned long, PAGE_SIZE, align);
- size = ALIGN(old_size + da_size, align);
+ size = ALIGN(PERCPU_ENOUGH_ROOM, PAGE_SIZE);
ptr = alloc_bootmem_pages(size * nr_possible_cpus);
for_each_possible_cpu(i) {
__per_cpu_offset[i] = ptr - __per_cpu_start;
memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start);
- per_cpu_alloc_dyn_array(i, ptr + old_size);
ptr += size;
}
}
@@ -573,7 +567,6 @@
printk(KERN_NOTICE);
printk(linux_banner);
setup_arch(&command_line);
- pre_alloc_dyn_array();
mm_init_owner(&init_mm, &init_task);
setup_command_line(command_line);
unwind_setup();
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index e6f73db..d96d6f6 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -326,11 +326,7 @@
if (unlikely(desc->status & IRQ_INPROGRESS))
goto out_unlock;
desc->status &= ~(IRQ_REPLAY | IRQ_WAITING);
-#ifdef CONFIG_HAVE_DYN_ARRAY
- kstat_irqs_this_cpu(desc)++;
-#else
- kstat_irqs_this_cpu(irq)++;
-#endif
+ kstat_incr_irqs_this_cpu(irq, desc);
action = desc->action;
if (unlikely(!action || (desc->status & IRQ_DISABLED)))
@@ -371,11 +367,7 @@
if (unlikely(desc->status & IRQ_INPROGRESS))
goto out_unlock;
desc->status &= ~(IRQ_REPLAY | IRQ_WAITING);
-#ifdef CONFIG_HAVE_DYN_ARRAY
- kstat_irqs_this_cpu(desc)++;
-#else
- kstat_irqs_this_cpu(irq)++;
-#endif
+ kstat_incr_irqs_this_cpu(irq, desc);
/*
* If its disabled or no action available
@@ -422,11 +414,7 @@
goto out;
desc->status &= ~(IRQ_REPLAY | IRQ_WAITING);
-#ifdef CONFIG_HAVE_DYN_ARRAY
- kstat_irqs_this_cpu(desc)++;
-#else
- kstat_irqs_this_cpu(irq)++;
-#endif
+ kstat_incr_irqs_this_cpu(irq, desc);
/*
* If its disabled or no action available
@@ -490,11 +478,7 @@
mask_ack_irq(desc, irq);
goto out_unlock;
}
-#ifdef CONFIG_HAVE_DYN_ARRAY
- kstat_irqs_this_cpu(desc)++;
-#else
- kstat_irqs_this_cpu(irq)++;
-#endif
+ kstat_incr_irqs_this_cpu(irq, desc);
/* Start handling the irq */
desc->chip->ack(irq);
@@ -549,11 +533,7 @@
{
irqreturn_t action_ret;
-#ifdef CONFIG_HAVE_DYN_ARRAY
- kstat_irqs_this_cpu(desc)++;
-#else
- kstat_irqs_this_cpu(irq)++;
-#endif
+ kstat_incr_irqs_this_cpu(irq, desc);
if (desc->chip->ack)
desc->chip->ack(irq);
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index f837133..9fe86b3 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -18,11 +18,6 @@
#include "internals.h"
-/*
- * lockdep: we want to handle all irq_desc locks as a single lock-class:
- */
-static struct lock_class_key irq_desc_lock_class;
-
/**
* handle_bad_irq - handle spurious and unhandled irqs
* @irq: the interrupt number
@@ -30,15 +25,10 @@
*
* Handles spurious and unhandled IRQ's. It also prints a debugmessage.
*/
-void
-handle_bad_irq(unsigned int irq, struct irq_desc *desc)
+void handle_bad_irq(unsigned int irq, struct irq_desc *desc)
{
print_irq_desc(irq, desc);
-#ifdef CONFIG_HAVE_DYN_ARRAY
- kstat_irqs_this_cpu(desc)++;
-#else
- kstat_irqs_this_cpu(irq)++;
-#endif
+ kstat_incr_irqs_this_cpu(irq, desc);
ack_bad_irq(irq);
}
@@ -59,80 +49,6 @@
int nr_irqs = NR_IRQS;
EXPORT_SYMBOL_GPL(nr_irqs);
-#ifdef CONFIG_HAVE_DYN_ARRAY
-static struct irq_desc irq_desc_init = {
- .irq = -1U,
- .status = IRQ_DISABLED,
- .chip = &no_irq_chip,
- .handle_irq = handle_bad_irq,
- .depth = 1,
- .lock = __SPIN_LOCK_UNLOCKED(irq_desc_init.lock),
-#ifdef CONFIG_SMP
- .affinity = CPU_MASK_ALL
-#endif
-};
-
-
-static void init_one_irq_desc(struct irq_desc *desc)
-{
- memcpy(desc, &irq_desc_init, sizeof(struct irq_desc));
- lockdep_set_class(&desc->lock, &irq_desc_lock_class);
-}
-
-extern int after_bootmem;
-extern void *__alloc_bootmem_nopanic(unsigned long size,
- unsigned long align,
- unsigned long goal);
-
-static void init_kstat_irqs(struct irq_desc *desc, int nr_desc, int nr)
-{
- unsigned long bytes, total_bytes;
- char *ptr;
- int i;
- unsigned long phys;
-
- /* Compute how many bytes we need per irq and allocate them */
- bytes = nr * sizeof(unsigned int);
- total_bytes = bytes * nr_desc;
- if (after_bootmem)
- ptr = kzalloc(total_bytes, GFP_ATOMIC);
- else
- ptr = __alloc_bootmem_nopanic(total_bytes, PAGE_SIZE, 0);
-
- if (!ptr)
- panic(" can not allocate kstat_irqs\n");
-
- phys = __pa(ptr);
- printk(KERN_DEBUG "kstat_irqs ==> [%#lx - %#lx]\n", phys, phys + total_bytes);
-
- for (i = 0; i < nr_desc; i++) {
- desc[i].kstat_irqs = (unsigned int *)ptr;
- ptr += bytes;
- }
-}
-
-static void __init init_work(void *data)
-{
- struct dyn_array *da = data;
- int i;
- struct irq_desc *desc;
-
- desc = *da->name;
-
- for (i = 0; i < *da->nr; i++) {
- init_one_irq_desc(&desc[i]);
- desc[i].irq = i;
- }
-
- /* init kstat_irqs, nr_cpu_ids is ready already */
- init_kstat_irqs(desc, *da->nr, nr_cpu_ids);
-}
-
-struct irq_desc *irq_desc;
-DEFINE_DYN_ARRAY(irq_desc, sizeof(struct irq_desc), nr_irqs, PAGE_SIZE, init_work);
-
-#else
-
struct irq_desc irq_desc[NR_IRQS] __cacheline_aligned_in_smp = {
[0 ... NR_IRQS-1] = {
.status = IRQ_DISABLED,
@@ -146,8 +62,6 @@
}
};
-#endif
-
/*
* What should we do if we get a hw irq event on an illegal vector?
* Each architecture has to answer this themself.
@@ -258,11 +172,8 @@
struct irqaction *action;
unsigned int status;
-#ifdef CONFIG_HAVE_DYN_ARRAY
- kstat_irqs_this_cpu(desc)++;
-#else
- kstat_irqs_this_cpu(irq)++;
-#endif
+ kstat_incr_irqs_this_cpu(irq, desc);
+
if (CHECK_IRQ_PER_CPU(desc->status)) {
irqreturn_t action_ret;
@@ -351,23 +262,16 @@
#ifdef CONFIG_TRACE_IRQFLAGS
+/*
+ * lockdep: we want to handle all irq_desc locks as a single lock-class:
+ */
+static struct lock_class_key irq_desc_lock_class;
+
void early_init_irq_lock_class(void)
{
-#ifndef CONFIG_HAVE_DYN_ARRAY
int i;
for (i = 0; i < nr_irqs; i++)
lockdep_set_class(&irq_desc[i].lock, &irq_desc_lock_class);
-#endif
}
#endif
-
-#ifdef CONFIG_HAVE_DYN_ARRAY
-unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
-{
- struct irq_desc *desc = irq_to_desc(irq);
- return desc->kstat_irqs[cpu];
-}
-#endif
-EXPORT_SYMBOL(kstat_irqs_cpu);
-
