endif
# Force gcc to behave correct even for buggy distributions
- # Arch Makefiles may override this setting
+ ifndef CONFIG_CC_STACKPROTECTOR
KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector)
+ endif
ifdef CONFIG_FRAME_POINTER
KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
# disable pointer signed / unsigned warnings in gcc 4.0
KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,)
+# disable invalid "can't wrap" optimzations for signed / pointers
+KBUILD_CFLAGS += $(call cc-option,-fwrapv)
+
# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
# But warn user when we do so
warn-assign = \
cpu = (cpu < (NR_CPUS-1) ? cpu + 1 : 0);
last_cpu = cpu;
- irq_desc[irq].affinity = cpumask_of_cpu(cpu);
+ cpumask_copy(irq_desc[irq].affinity, cpumask_of(cpu));
irq_desc[irq].chip->set_affinity(irq, cpumask_of(cpu));
return 0;
}
seq_printf(p, "%10u ", kstat_irqs(irq));
#else
for_each_online_cpu(j)
- seq_printf(p, "%10u ", kstat_cpu(j).irqs[irq]);
+ seq_printf(p, "%10u ", kstat_irqs_cpu(irq, j));
#endif
seq_printf(p, " %14s", irq_desc[irq].chip->typename);
seq_printf(p, " %c%s",
seq_printf(p, "%3d: ", i);
for_each_present_cpu(cpu)
- seq_printf(p, "%10u ", kstat_cpu(cpu).irqs[i]);
+ seq_printf(p, "%10u ", kstat_irqs_cpu(i, cpu));
seq_printf(p, " %10s", irq_desc[i].chip->name ? : "-");
seq_printf(p, " %s", action->name);
for (action = action->next; action; action = action->next)
.lock = __SPIN_LOCK_UNLOCKED(bad_irq_desc.lock),
};
+ #ifdef CONFIG_CPUMASK_OFFSTACK
+ /* We are not allocating bad_irq_desc.affinity or .pending_mask */
+ #error "ARM architecture does not support CONFIG_CPUMASK_OFFSTACK."
+ #endif
+
/*
* do_IRQ handles all hardware IRQ's. Decoded IRQs should not
* come via this function. Instead, they should provide their
irq_desc[irq].status |= IRQ_NOREQUEST | IRQ_NOPROBE;
#ifdef CONFIG_SMP
- bad_irq_desc.affinity = CPU_MASK_ALL;
+ cpumask_setall(bad_irq_desc.affinity);
bad_irq_desc.cpu = smp_processor_id();
#endif
init_arch_irq();
struct irq_desc *desc = irq_desc + i;
if (desc->cpu == cpu) {
- unsigned int newcpu = any_online_cpu(desc->affinity);
-
- if (newcpu == NR_CPUS) {
+ unsigned int newcpu = cpumask_any_and(desc->affinity,
+ cpu_online_mask);
+ if (newcpu >= nr_cpu_ids) {
if (printk_ratelimit())
printk(KERN_INFO "IRQ%u no longer affine to CPU%u\n",
i, cpu);
- cpus_setall(desc->affinity);
- newcpu = any_online_cpu(desc->affinity);
+ cpumask_setall(desc->affinity);
+ newcpu = cpumask_any_and(desc->affinity,
+ cpu_online_mask);
}
route_irq(desc, i, newcpu);
#endif
};
+ #ifdef CONFIG_CPUMASK_OFFSTACK
+ /* We are not allocating a variable-sized bad_irq_desc.affinity */
+ #error "Blackfin architecture does not support CONFIG_CPUMASK_OFFSTACK."
+ #endif
+
int show_interrupts(struct seq_file *p, void *v)
{
int i = *(loff_t *) v, j;
goto skip;
seq_printf(p, "%3d: ", i);
for_each_online_cpu(j)
- seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
+ seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
seq_printf(p, " %8s", irq_desc[i].chip->name);
seq_printf(p, " %s", action->name);
for (action = action->next; action; action = action->next)
seq_printf(p, "%10u ", kstat_irqs(i));
#else
for_each_online_cpu(j) {
- seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
+ seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
}
#endif
seq_printf(p, " %14s", irq_desc[i].chip->name);
void set_irq_affinity_info (unsigned int irq, int hwid, int redir)
{
if (irq < NR_IRQS) {
- cpumask_copy(&irq_desc[irq].affinity,
+ cpumask_copy(irq_desc[irq].affinity,
cpumask_of(cpu_logical_id(hwid)));
irq_redir[irq] = (char) (redir & 0xff);
}
if (desc->status == IRQ_PER_CPU)
continue;
- if (cpumask_any_and(&irq_desc[irq].affinity, cpu_online_mask)
+ if (cpumask_any_and(irq_desc[irq].affinity, cpu_online_mask)
>= nr_cpu_ids) {
/*
* Save it for phase 2 processing
}
#ifdef CONFIG_SMP
-int cpu_check_affinity(unsigned int irq, cpumask_t *dest)
+int cpu_check_affinity(unsigned int irq, const struct cpumask *dest)
{
int cpu_dest;
if (CHECK_IRQ_PER_CPU(irq)) {
/* Bad linux design decision. The mask has already
* been set; we must reset it */
- cpumask_setall(irq_desc[irq].affinity);
+ cpumask_setall(&irq_desc[irq].affinity);
return -EINVAL;
}
/* whatever mask they set, we just allow one CPU */
cpu_dest = first_cpu(*dest);
- *dest = cpumask_of_cpu(cpu_dest);
- return 0;
+ return cpu_dest;
}
static void cpu_set_affinity_irq(unsigned int irq, const struct cpumask *dest)
{
- if (cpu_check_affinity(irq, dest))
+ int cpu_dest;
+
+ cpu_dest = cpu_check_affinity(irq, dest);
+ if (cpu_dest < 0)
return;
- cpumask_copy(&irq_desc[irq].affinity, &cpumask_of_cpu(cpu_dest));
- cpumask_copy(irq_desc[irq].affinity, dest);
++ cpumask_copy(&irq_desc[irq].affinity, dest);
}
#endif
seq_printf(p, "%3d: ", i);
#ifdef CONFIG_SMP
for_each_online_cpu(j)
- seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
+ seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
#else
seq_printf(p, "%10u ", kstat_irqs(i));
#endif
unsigned long txn_affinity_addr(unsigned int irq, int cpu)
{
#ifdef CONFIG_SMP
- cpumask_copy(irq_desc[irq].affinity, cpumask_of(cpu));
+ cpumask_copy(&irq_desc[irq].affinity, cpumask_of(cpu));
#endif
return per_cpu(cpu_data, cpu).txn_addr;
irq = eirr_to_irq(eirr_val);
#ifdef CONFIG_SMP
- cpumask_copy(&dest, irq_desc[irq].affinity);
+ cpumask_copy(&dest, &irq_desc[irq].affinity);
if (CHECK_IRQ_PER_CPU(irq_desc[irq].status) &&
!cpu_isset(smp_processor_id(), dest)) {
int cpu = first_cpu(dest);
seq_printf(p, "%3d: ", i);
#ifdef CONFIG_SMP
for_each_online_cpu(j)
- seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
+ seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
#else
seq_printf(p, "%10u ", kstat_irqs(i));
#endif /* CONFIG_SMP */
if (irq_desc[irq].status & IRQ_PER_CPU)
continue;
- cpus_and(mask, irq_desc[irq].affinity, map);
+ cpumask_and(&mask, irq_desc[irq].affinity, &map);
if (any_online_cpu(mask) == NR_CPUS) {
printk("Breaking affinity for irq %i\n", irq);
mask = map;
seq_printf(p, "%10u ", kstat_irqs(i));
#else
for_each_online_cpu(j)
- seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
+ seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
#endif
seq_printf(p, " %9s", irq_desc[i].chip->typename);
seq_printf(p, " %s", action->name);
#ifdef CONFIG_SMP
static int irq_choose_cpu(unsigned int virt_irq)
{
- cpumask_t mask = irq_desc[virt_irq].affinity;
+ cpumask_t mask;
int cpuid;
+ cpumask_copy(&mask, irq_desc[virt_irq].affinity);
if (cpus_equal(mask, CPU_MASK_ALL)) {
static int irq_rover;
static DEFINE_SPINLOCK(irq_rover_lock);
!(irq_desc[irq].status & IRQ_PER_CPU)) {
if (irq_desc[irq].chip->set_affinity)
irq_desc[irq].chip->set_affinity(irq,
- &irq_desc[irq].affinity);
+ irq_desc[irq].affinity);
}
spin_unlock_irqrestore(&irq_desc[irq].lock, flags);
}
#include <linux/clocksource.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
+#include <linux/irq.h>
#include <asm/oplib.h>
#include <asm/timer.h>
-#include <asm/irq.h>
#include <asm/io.h>
#include <asm/prom.h>
#include <asm/starfire.h>
irq_enter();
- kstat_this_cpu.irqs[0]++;
+ kstat_incr_irqs_this_cpu(0, irq_to_desc(0));
if (unlikely(!evt->event_handler)) {
printk(KERN_WARNING
* use the TSC value at the transitions to calculate a pretty
* good value for the TSC frequencty.
*/
-static inline int pit_expect_msb(unsigned char val)
+static inline int pit_expect_msb(unsigned char val, u64 *tscp, unsigned long *deltap)
{
- int count = 0;
+ int count;
+ u64 tsc = 0;
for (count = 0; count < 50000; count++) {
/* Ignore LSB */
inb(0x42);
if (inb(0x42) != val)
break;
+ tsc = get_cycles();
}
- return count > 50;
+ *deltap = get_cycles() - tsc;
+ *tscp = tsc;
+
+ /*
+ * We require _some_ success, but the quality control
+ * will be based on the error terms on the TSC values.
+ */
+ return count > 5;
}
/*
- * How many MSB values do we want to see? We aim for a
- * 15ms calibration, which assuming a 2us counter read
- * error should give us roughly 150 ppm precision for
- * the calibration.
+ * How many MSB values do we want to see? We aim for
+ * a maximum error rate of 500ppm (in practice the
+ * real error is much smaller), but refuse to spend
+ * more than 25ms on it.
*/
-#define QUICK_PIT_MS 15
-#define QUICK_PIT_ITERATIONS (QUICK_PIT_MS * PIT_TICK_RATE / 1000 / 256)
+#define MAX_QUICK_PIT_MS 25
+#define MAX_QUICK_PIT_ITERATIONS (MAX_QUICK_PIT_MS * PIT_TICK_RATE / 1000 / 256)
static unsigned long quick_pit_calibrate(void)
{
+ int i;
+ u64 tsc, delta;
+ unsigned long d1, d2;
+
/* Set the Gate high, disable speaker */
outb((inb(0x61) & ~0x02) | 0x01, 0x61);
outb(0xff, 0x42);
outb(0xff, 0x42);
- if (pit_expect_msb(0xff)) {
- int i;
- u64 t1, t2, delta;
- unsigned char expect = 0xfe;
-
- t1 = get_cycles();
- for (i = 0; i < QUICK_PIT_ITERATIONS; i++, expect--) {
- if (!pit_expect_msb(expect))
- goto failed;
+ /*
+ * The PIT starts counting at the next edge, so we
+ * need to delay for a microsecond. The easiest way
+ * to do that is to just read back the 16-bit counter
+ * once from the PIT.
+ */
+ inb(0x42);
+ inb(0x42);
+
+ if (pit_expect_msb(0xff, &tsc, &d1)) {
+ for (i = 1; i <= MAX_QUICK_PIT_ITERATIONS; i++) {
+ if (!pit_expect_msb(0xff-i, &delta, &d2))
+ break;
+
+ /*
+ * Iterate until the error is less than 500 ppm
+ */
+ delta -= tsc;
+ if (d1+d2 < delta >> 11)
+ goto success;
}
- t2 = get_cycles();
-
- /*
- * Make sure we can rely on the second TSC timestamp:
- */
- if (!pit_expect_msb(expect))
- goto failed;
-
- /*
- * Ok, if we get here, then we've seen the
- * MSB of the PIT decrement QUICK_PIT_ITERATIONS
- * times, and each MSB had many hits, so we never
- * had any sudden jumps.
- *
- * As a result, we can depend on there not being
- * any odd delays anywhere, and the TSC reads are
- * reliable.
- *
- * kHz = ticks / time-in-seconds / 1000;
- * kHz = (t2 - t1) / (QPI * 256 / PIT_TICK_RATE) / 1000
- * kHz = ((t2 - t1) * PIT_TICK_RATE) / (QPI * 256 * 1000)
- */
- delta = (t2 - t1)*PIT_TICK_RATE;
- do_div(delta, QUICK_PIT_ITERATIONS*256*1000);
- printk("Fast TSC calibration using PIT\n");
- return delta;
}
-failed:
+ printk("Fast TSC calibration failed\n");
return 0;
+
+success:
+ /*
+ * Ok, if we get here, then we've seen the
+ * MSB of the PIT decrement 'i' times, and the
+ * error has shrunk to less than 500 ppm.
+ *
+ * As a result, we can depend on there not being
+ * any odd delays anywhere, and the TSC reads are
+ * reliable (within the error). We also adjust the
+ * delta to the middle of the error bars, just
+ * because it looks nicer.
+ *
+ * kHz = ticks / time-in-seconds / 1000;
+ * kHz = (t2 - t1) / (I * 256 / PIT_TICK_RATE) / 1000
+ * kHz = ((t2 - t1) * PIT_TICK_RATE) / (I * 256 * 1000)
+ */
+ delta += (long)(d2 - d1)/2;
+ delta *= PIT_TICK_RATE;
+ do_div(delta, i*256*1000);
+ printk("Fast TSC calibration using PIT\n");
+ return delta;
}
/**
if (!cpu_has_tsc || tsc_unstable)
return 1;
- #ifdef CONFIG_X86_SMP
+ #ifdef CONFIG_SMP
if (apic_is_clustered_box())
return 1;
#endif
}
EXPORT_SYMBOL_GPL(acpi_os_map_memory);
- void acpi_os_unmap_memory(void __iomem * virt, acpi_size size)
+ void __ref acpi_os_unmap_memory(void __iomem *virt, acpi_size size)
{
- if (acpi_gbl_permanent_mmap) {
+ if (acpi_gbl_permanent_mmap)
iounmap(virt);
- }
+ else
+ __acpi_unmap_table(virt, size);
}
EXPORT_SYMBOL_GPL(acpi_os_unmap_memory);
+ void __init early_acpi_os_unmap_memory(void __iomem *virt, acpi_size size)
+ {
+ if (!acpi_gbl_permanent_mmap)
+ __acpi_unmap_table(virt, size);
+ }
+
#ifdef ACPI_FUTURE_USAGE
acpi_status
acpi_os_get_physical_address(void *virt, acpi_physical_address * phys)
return AE_SUPPORT;
}
-#ifdef CONFIG_X86
-
-struct aml_port_desc {
- uint start;
- uint end;
- char* name;
- char warned;
-};
-
-static struct aml_port_desc aml_invalid_port_list[] = {
- {0x20, 0x21, "PIC0", 0},
- {0xA0, 0xA1, "PIC1", 0},
- {0x4D0, 0x4D1, "ELCR", 0}
-};
-
-/*
- * valid_aml_io_address()
- *
- * if valid, return true
- * else invalid, warn once, return false
- */
-static bool valid_aml_io_address(uint address, uint length)
-{
- int i;
- int entries = sizeof(aml_invalid_port_list) / sizeof(struct aml_port_desc);
-
- for (i = 0; i < entries; ++i) {
- if ((address >= aml_invalid_port_list[i].start &&
- address <= aml_invalid_port_list[i].end) ||
- (address + length >= aml_invalid_port_list[i].start &&
- address + length <= aml_invalid_port_list[i].end))
- {
- if (!aml_invalid_port_list[i].warned)
- {
- printk(KERN_ERR "ACPI: Denied BIOS AML access"
- " to invalid port 0x%x+0x%x (%s)\n",
- address, length,
- aml_invalid_port_list[i].name);
- aml_invalid_port_list[i].warned = 1;
- }
- return false; /* invalid */
- }
- }
- return true; /* valid */
-}
-#else
-static inline bool valid_aml_io_address(uint address, uint length) { return true; }
-#endif
/******************************************************************************
*
* FUNCTION: acpi_os_validate_address
switch (space_id) {
case ACPI_ADR_SPACE_SYSTEM_IO:
- if (!valid_aml_io_address(address, length))
- return AE_AML_ILLEGAL_ADDRESS;
case ACPI_ADR_SPACE_SYSTEM_MEMORY:
/* Only interference checks against SystemIO and SytemMemory
are needed */
#include <linux/irq.h>
#include <asm/io_apic.h>
#include <asm/smp.h>
+ #include <asm/cpu.h>
#include <linux/intel-iommu.h>
#include "intr_remapping.h"
u8 irte_mask;
};
-#ifdef CONFIG_SPARSE_IRQ
+#ifdef CONFIG_GENERIC_HARDIRQS
static struct irq_2_iommu *get_one_free_irq_2_iommu(int cpu)
{
struct irq_2_iommu *iommu;
typedef irqreturn_t (*irq_handler_t)(int, void *);
+/**
+ * struct irqaction - per interrupt action descriptor
+ * @handler: interrupt handler function
+ * @flags: flags (see IRQF_* above)
+ * @mask: no comment as it is useless and about to be removed
+ * @name: name of the device
+ * @dev_id: cookie to identify the device
+ * @next: pointer to the next irqaction for shared interrupts
+ * @irq: interrupt number
+ * @dir: pointer to the proc/irq/NN/name entry
+ */
struct irqaction {
irq_handler_t handler;
unsigned long flags;
}
#endif
+#if defined(CONFIG_GENERIC_HARDIRQS) && defined(CONFIG_DEBUG_SHIRQ)
+extern void debug_poll_all_shared_irqs(void);
+#else
+static inline void debug_poll_all_shared_irqs(void) { }
+#endif
+
int show_interrupts(struct seq_file *p, void *v);
struct irq_desc;
extern int early_irq_init(void);
+ extern int arch_probe_nr_irqs(void);
extern int arch_early_irq_init(void);
extern int arch_init_chip_data(struct irq_desc *desc, int cpu);
*/
struct irq_desc {
unsigned int irq;
-#ifdef CONFIG_SPARSE_IRQ
struct timer_rand_state *timer_rand_state;
unsigned int *kstat_irqs;
-# ifdef CONFIG_INTR_REMAP
+#ifdef CONFIG_INTR_REMAP
struct irq_2_iommu *irq_2_iommu;
-# endif
#endif
irq_flow_handler_t handle_irq;
struct irq_chip *chip;
unsigned int irqs_unhandled;
spinlock_t lock;
#ifdef CONFIG_SMP
- cpumask_t affinity;
+ cpumask_var_t affinity;
unsigned int cpu;
- #endif
#ifdef CONFIG_GENERIC_PENDING_IRQ
- cpumask_t pending_mask;
+ cpumask_var_t pending_mask;
+ #endif
#endif
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *dir;
extern struct irq_desc irq_desc[NR_IRQS];
#else /* CONFIG_SPARSE_IRQ */
extern struct irq_desc *move_irq_desc(struct irq_desc *old_desc, int cpu);
-
-#define kstat_irqs_this_cpu(DESC) \
- ((DESC)->kstat_irqs[smp_processor_id()])
-#define kstat_incr_irqs_this_cpu(irqno, DESC) \
- ((DESC)->kstat_irqs[smp_processor_id()]++)
-
#endif /* CONFIG_SPARSE_IRQ */
extern struct irq_desc *irq_to_desc_alloc_cpu(unsigned int irq, int cpu);
* Migration helpers for obsolete names, they will go away:
*/
#define hw_interrupt_type irq_chip
-typedef struct irq_chip hw_irq_controller;
#define no_irq_type no_irq_chip
typedef struct irq_desc irq_desc_t;
#include <asm/hw_irq.h>
extern int setup_irq(unsigned int irq, struct irqaction *new);
+extern void remove_irq(unsigned int irq, struct irqaction *act);
#ifdef CONFIG_GENERIC_HARDIRQS
}
/* Handle irq action chains: */
-extern int handle_IRQ_event(unsigned int irq, struct irqaction *action);
+extern irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action);
/*
* Built-in IRQ handlers for various IRQ types,
/* Handling of unhandled and spurious interrupts: */
extern void note_interrupt(unsigned int irq, struct irq_desc *desc,
- int action_ret);
+ irqreturn_t action_ret);
/* Resending of interrupts :*/
void check_irq_resend(struct irq_desc *desc, unsigned int irq);
#endif /* !CONFIG_S390 */
+ #ifdef CONFIG_SMP
+ /**
+ * init_alloc_desc_masks - allocate cpumasks for irq_desc
+ * @desc: pointer to irq_desc struct
+ * @cpu: cpu which will be handling the cpumasks
+ * @boot: true if need bootmem
+ *
+ * Allocates affinity and pending_mask cpumask if required.
+ * Returns true if successful (or not required).
+ * Side effect: affinity has all bits set, pending_mask has all bits clear.
+ */
+ static inline bool init_alloc_desc_masks(struct irq_desc *desc, int cpu,
+ bool boot)
+ {
+ int node;
+
+ if (boot) {
+ alloc_bootmem_cpumask_var(&desc->affinity);
+ cpumask_setall(desc->affinity);
+
+ #ifdef CONFIG_GENERIC_PENDING_IRQ
+ alloc_bootmem_cpumask_var(&desc->pending_mask);
+ cpumask_clear(desc->pending_mask);
+ #endif
+ return true;
+ }
+
+ node = cpu_to_node(cpu);
+
+ if (!alloc_cpumask_var_node(&desc->affinity, GFP_ATOMIC, node))
+ return false;
+ cpumask_setall(desc->affinity);
+
+ #ifdef CONFIG_GENERIC_PENDING_IRQ
+ if (!alloc_cpumask_var_node(&desc->pending_mask, GFP_ATOMIC, node)) {
+ free_cpumask_var(desc->affinity);
+ return false;
+ }
+ cpumask_clear(desc->pending_mask);
+ #endif
+ return true;
+ }
+
+ /**
+ * init_copy_desc_masks - copy cpumasks for irq_desc
+ * @old_desc: pointer to old irq_desc struct
+ * @new_desc: pointer to new irq_desc struct
+ *
+ * Insures affinity and pending_masks are copied to new irq_desc.
+ * If !CONFIG_CPUMASKS_OFFSTACK the cpumasks are embedded in the
+ * irq_desc struct so the copy is redundant.
+ */
+
+ static inline void init_copy_desc_masks(struct irq_desc *old_desc,
+ struct irq_desc *new_desc)
+ {
+ #ifdef CONFIG_CPUMASKS_OFFSTACK
+ cpumask_copy(new_desc->affinity, old_desc->affinity);
+
+ #ifdef CONFIG_GENERIC_PENDING_IRQ
+ cpumask_copy(new_desc->pending_mask, old_desc->pending_mask);
+ #endif
+ #endif
+ }
+
+ #else /* !CONFIG_SMP */
+
+ static inline bool init_alloc_desc_masks(struct irq_desc *desc, int cpu,
+ bool boot)
+ {
+ return true;
+ }
+
+ static inline void init_copy_desc_masks(struct irq_desc *old_desc,
+ struct irq_desc *new_desc)
+ {
+ }
+
+ #endif /* CONFIG_SMP */
+
#endif /* _LINUX_IRQ_H */
# define for_each_irq_desc_reverse(irq, desc) \
for (irq = nr_irqs - 1; irq >= 0; irq--)
+
#else /* CONFIG_GENERIC_HARDIRQS */
extern int nr_irqs;
# define for_each_irq_desc(irq, desc) \
for (irq = 0, desc = irq_to_desc(irq); irq < nr_irqs; \
irq++, desc = irq_to_desc(irq)) \
- if (desc)
+ if (!desc) \
+ ; \
+ else
# define for_each_irq_desc_reverse(irq, desc) \
for (irq = nr_irqs - 1, desc = irq_to_desc(irq); irq >= 0; \
irq--, desc = irq_to_desc(irq)) \
- if (desc)
+ if (!desc) \
+ ; \
+ else
#endif /* CONFIG_GENERIC_HARDIRQS */
desc->irq_count = 0;
desc->irqs_unhandled = 0;
#ifdef CONFIG_SMP
- cpumask_setall(&desc->affinity);
+ cpumask_setall(desc->affinity);
+ #ifdef CONFIG_GENERIC_PENDING_IRQ
+ cpumask_clear(desc->pending_mask);
+ #endif
#endif
spin_unlock_irqrestore(&desc->lock, flags);
}
desc->handle_irq = handle_bad_irq;
desc->chip = &no_irq_chip;
desc->name = NULL;
+ clear_kstat_irqs(desc);
spin_unlock_irqrestore(&desc->lock, flags);
}
desc->chip->mask_ack(irq);
else {
desc->chip->mask(irq);
- desc->chip->ack(irq);
+ if (desc->chip->ack)
+ desc->chip->ack(irq);
}
}
kstat_incr_irqs_this_cpu(irq, desc);
/* Start handling the irq */
- desc->chip->ack(irq);
+ if (desc->chip->ack)
+ desc->chip->ack(irq);
desc = irq_remap_to_desc(irq, desc);
/* Mark the IRQ currently in progress.*/
#include <linux/kernel_stat.h>
#include <linux/rculist.h>
#include <linux/hash.h>
+ #include <linux/bootmem.h>
#include "internals.h"
EXPORT_SYMBOL_GPL(nr_irqs);
#ifdef CONFIG_SPARSE_IRQ
+
static struct irq_desc irq_desc_init = {
.irq = -1,
.status = IRQ_DISABLED,
.handle_irq = handle_bad_irq,
.depth = 1,
.lock = __SPIN_LOCK_UNLOCKED(irq_desc_init.lock),
- #ifdef CONFIG_SMP
- .affinity = CPU_MASK_ALL
- #endif
};
void init_kstat_irqs(struct irq_desc *desc, int cpu, int nr)
{
- unsigned long bytes;
- char *ptr;
int node;
-
- /* Compute how many bytes we need per irq and allocate them */
- bytes = nr * sizeof(unsigned int);
+ void *ptr;
node = cpu_to_node(cpu);
- ptr = kzalloc_node(bytes, GFP_ATOMIC, node);
- printk(KERN_DEBUG " alloc kstat_irqs on cpu %d node %d\n", cpu, node);
+ ptr = kzalloc_node(nr * sizeof(*desc->kstat_irqs), GFP_ATOMIC, node);
- if (ptr)
- desc->kstat_irqs = (unsigned int *)ptr;
+ /*
+ * don't overwite if can not get new one
+ * init_copy_kstat_irqs() could still use old one
+ */
+ if (ptr) {
+ printk(KERN_DEBUG " alloc kstat_irqs on cpu %d node %d\n",
+ cpu, node);
+ desc->kstat_irqs = ptr;
+ }
}
static void init_one_irq_desc(int irq, struct irq_desc *desc, int cpu)
printk(KERN_ERR "can not alloc kstat_irqs\n");
BUG_ON(1);
}
+ if (!init_alloc_desc_masks(desc, cpu, false)) {
+ printk(KERN_ERR "can not alloc irq_desc cpumasks\n");
+ BUG_ON(1);
+ }
arch_init_chip_data(desc, cpu);
}
*/
DEFINE_SPINLOCK(sparse_irq_lock);
- struct irq_desc *irq_desc_ptrs[NR_IRQS] __read_mostly;
+ struct irq_desc **irq_desc_ptrs __read_mostly;
static struct irq_desc irq_desc_legacy[NR_IRQS_LEGACY] __cacheline_aligned_in_smp = {
[0 ... NR_IRQS_LEGACY-1] = {
.handle_irq = handle_bad_irq,
.depth = 1,
.lock = __SPIN_LOCK_UNLOCKED(irq_desc_init.lock),
- #ifdef CONFIG_SMP
- .affinity = CPU_MASK_ALL
- #endif
}
};
- /* FIXME: use bootmem alloc ...*/
- static unsigned int kstat_irqs_legacy[NR_IRQS_LEGACY][NR_CPUS];
+ static unsigned int *kstat_irqs_legacy;
int __init early_irq_init(void)
{
init_irq_default_affinity();
+ /* initialize nr_irqs based on nr_cpu_ids */
+ arch_probe_nr_irqs();
+ printk(KERN_INFO "NR_IRQS:%d nr_irqs:%d\n", NR_IRQS, nr_irqs);
+
desc = irq_desc_legacy;
legacy_count = ARRAY_SIZE(irq_desc_legacy);
+ /* allocate irq_desc_ptrs array based on nr_irqs */
+ irq_desc_ptrs = alloc_bootmem(nr_irqs * sizeof(void *));
+
+ /* allocate based on nr_cpu_ids */
+ /* FIXME: invert kstat_irgs, and it'd be a per_cpu_alloc'd thing */
+ kstat_irqs_legacy = alloc_bootmem(NR_IRQS_LEGACY * nr_cpu_ids *
+ sizeof(int));
+
for (i = 0; i < legacy_count; i++) {
desc[i].irq = i;
- desc[i].kstat_irqs = kstat_irqs_legacy[i];
+ desc[i].kstat_irqs = kstat_irqs_legacy + i * nr_cpu_ids;
lockdep_set_class(&desc[i].lock, &irq_desc_lock_class);
-
+ init_alloc_desc_masks(&desc[i], 0, true);
irq_desc_ptrs[i] = desc + i;
}
- for (i = legacy_count; i < NR_IRQS; i++)
+ for (i = legacy_count; i < nr_irqs; i++)
irq_desc_ptrs[i] = NULL;
return arch_early_irq_init();
struct irq_desc *irq_to_desc(unsigned int irq)
{
- return (irq < NR_IRQS) ? irq_desc_ptrs[irq] : NULL;
+ if (irq_desc_ptrs && irq < nr_irqs)
+ return irq_desc_ptrs[irq];
+
+ return NULL;
}
struct irq_desc *irq_to_desc_alloc_cpu(unsigned int irq, int cpu)
unsigned long flags;
int node;
- if (irq >= NR_IRQS) {
- printk(KERN_WARNING "irq >= NR_IRQS in irq_to_desc_alloc: %d %d\n",
- irq, NR_IRQS);
- WARN_ON(1);
+ if (irq >= nr_irqs) {
+ WARN(1, "irq (%d) >= nr_irqs (%d) in irq_to_desc_alloc\n",
+ irq, nr_irqs);
return NULL;
}
.handle_irq = handle_bad_irq,
.depth = 1,
.lock = __SPIN_LOCK_UNLOCKED(irq_desc->lock),
- #ifdef CONFIG_SMP
- .affinity = CPU_MASK_ALL
- #endif
}
};
+static unsigned int kstat_irqs_all[NR_IRQS][NR_CPUS];
int __init early_irq_init(void)
{
struct irq_desc *desc;
init_irq_default_affinity();
+ printk(KERN_INFO "NR_IRQS:%d\n", NR_IRQS);
+
desc = irq_desc;
count = ARRAY_SIZE(irq_desc);
for (i = 0; i < count; i++) {
desc[i].irq = i;
+ init_alloc_desc_masks(&desc[i], 0, true);
+ desc[i].kstat_irqs = kstat_irqs_all[i];
}
-
return arch_early_irq_init();
}
}
#endif /* !CONFIG_SPARSE_IRQ */
+void clear_kstat_irqs(struct irq_desc *desc)
+{
+ memset(desc->kstat_irqs, 0, nr_cpu_ids * sizeof(*(desc->kstat_irqs)));
+}
+
/*
* What should we do if we get a hw irq event on an illegal vector?
* Each architecture has to answer this themself.
irqreturn_t ret, retval = IRQ_NONE;
unsigned int status = 0;
+ WARN_ONCE(!in_irq(), "BUG: IRQ handler called from non-hardirq context!");
+
if (!(action->flags & IRQF_DISABLED))
local_irq_enable_in_hardirq();
}
#ifndef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ
+
+#ifdef CONFIG_ENABLE_WARN_DEPRECATED
+# warning __do_IRQ is deprecated. Please convert to proper flow handlers
+#endif
+
/**
* __do_IRQ - original all in one highlevel IRQ handler
* @irq: the interrupt number
}
}
-#ifdef CONFIG_SPARSE_IRQ
unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
{
struct irq_desc *desc = irq_to_desc(irq);
return desc ? desc->kstat_irqs[cpu] : 0;
}
-#endif
EXPORT_SYMBOL(kstat_irqs_cpu);
extern struct lock_class_key irq_desc_lock_class;
extern void init_kstat_irqs(struct irq_desc *desc, int cpu, int nr);
+extern void clear_kstat_irqs(struct irq_desc *desc);
extern spinlock_t sparse_irq_lock;
+
+ #ifdef CONFIG_SPARSE_IRQ
+ /* irq_desc_ptrs allocated at boot time */
+ extern struct irq_desc **irq_desc_ptrs;
+ #else
+ /* irq_desc_ptrs is a fixed size array */
extern struct irq_desc *irq_desc_ptrs[NR_IRQS];
+ #endif
#ifdef CONFIG_PROC_FS
extern void register_irq_proc(unsigned int irq, struct irq_desc *desc);
#ifdef CONFIG_GENERIC_PENDING_IRQ
if (desc->status & IRQ_MOVE_PCNTXT || desc->status & IRQ_DISABLED) {
- cpumask_copy(&desc->affinity, cpumask);
+ cpumask_copy(desc->affinity, cpumask);
desc->chip->set_affinity(irq, cpumask);
} else {
desc->status |= IRQ_MOVE_PENDING;
- cpumask_copy(&desc->pending_mask, cpumask);
+ cpumask_copy(desc->pending_mask, cpumask);
}
#else
- cpumask_copy(&desc->affinity, cpumask);
+ cpumask_copy(desc->affinity, cpumask);
desc->chip->set_affinity(irq, cpumask);
#endif
desc->status |= IRQ_AFFINITY_SET;
/*
* Generic version of the affinity autoselector.
*/
-int do_irq_select_affinity(unsigned int irq, struct irq_desc *desc)
+static int setup_affinity(unsigned int irq, struct irq_desc *desc)
{
if (!irq_can_set_affinity(irq))
return 0;
* one of the targets is online.
*/
if (desc->status & (IRQ_AFFINITY_SET | IRQ_NO_BALANCING)) {
- if (cpumask_any_and(&desc->affinity, cpu_online_mask)
+ if (cpumask_any_and(desc->affinity, cpu_online_mask)
< nr_cpu_ids)
goto set_affinity;
else
desc->status &= ~IRQ_AFFINITY_SET;
}
- cpumask_and(&desc->affinity, cpu_online_mask, irq_default_affinity);
+ cpumask_and(desc->affinity, cpu_online_mask, irq_default_affinity);
set_affinity:
- desc->chip->set_affinity(irq, &desc->affinity);
+ desc->chip->set_affinity(irq, desc->affinity);
return 0;
}
#else
-static inline int do_irq_select_affinity(unsigned int irq, struct irq_desc *d)
+static inline int setup_affinity(unsigned int irq, struct irq_desc *d)
{
return irq_select_affinity(irq);
}
int ret;
spin_lock_irqsave(&desc->lock, flags);
- ret = do_irq_select_affinity(irq, desc);
+ ret = setup_affinity(irq, desc);
spin_unlock_irqrestore(&desc->lock, flags);
return ret;
}
#else
-static inline int do_irq_select_affinity(int irq, struct irq_desc *desc)
+static inline int setup_affinity(unsigned int irq, struct irq_desc *desc)
{
return 0;
}
* allocate special interrupts that are part of the architecture.
*/
static int
-__setup_irq(unsigned int irq, struct irq_desc * desc, struct irqaction *new)
+__setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
{
- struct irqaction *old, **p;
+ struct irqaction *old, **old_ptr;
const char *old_name = NULL;
unsigned long flags;
int shared = 0;
* The following block of code has to be executed atomically
*/
spin_lock_irqsave(&desc->lock, flags);
- p = &desc->action;
- old = *p;
+ old_ptr = &desc->action;
+ old = *old_ptr;
if (old) {
/*
* Can't share interrupts unless both agree to and are
/* add new interrupt at end of irq queue */
do {
- p = &old->next;
- old = *p;
+ old_ptr = &old->next;
+ old = *old_ptr;
} while (old);
shared = 1;
}
desc->status |= IRQ_NO_BALANCING;
/* Set default affinity mask once everything is setup */
- do_irq_select_affinity(irq, desc);
+ setup_affinity(irq, desc);
} else if ((new->flags & IRQF_TRIGGER_MASK)
&& (new->flags & IRQF_TRIGGER_MASK)
(int)(new->flags & IRQF_TRIGGER_MASK));
}
- *p = new;
+ *old_ptr = new;
/* Reset broken irq detection when installing new handler */
desc->irq_count = 0;
return __setup_irq(irq, desc, act);
}
+EXPORT_SYMBOL_GPL(setup_irq);
-/**
- * free_irq - free an interrupt
- * @irq: Interrupt line to free
- * @dev_id: Device identity to free
- *
- * Remove an interrupt handler. The handler is removed and if the
- * interrupt line is no longer in use by any driver it is disabled.
- * On a shared IRQ the caller must ensure the interrupt is disabled
- * on the card it drives before calling this function. The function
- * does not return until any executing interrupts for this IRQ
- * have completed.
- *
- * This function must not be called from interrupt context.
+ /*
+ * Internal function to unregister an irqaction - used to free
+ * regular and special interrupts that are part of the architecture.
*/
-void free_irq(unsigned int irq, void *dev_id)
+static struct irqaction *__free_irq(unsigned int irq, void *dev_id)
{
struct irq_desc *desc = irq_to_desc(irq);
- struct irqaction **p;
+ struct irqaction *action, **action_ptr;
unsigned long flags;
- WARN_ON(in_interrupt());
+ WARN(in_interrupt(), "Trying to free IRQ %d from IRQ context!\n", irq);
if (!desc)
- return;
+ return NULL;
spin_lock_irqsave(&desc->lock, flags);
- p = &desc->action;
+
+ /*
+ * There can be multiple actions per IRQ descriptor, find the right
+ * one based on the dev_id:
+ */
+ action_ptr = &desc->action;
for (;;) {
- struct irqaction *action = *p;
+ action = *action_ptr;
- if (action) {
- struct irqaction **pp = p;
+ if (!action) {
+ WARN(1, "Trying to free already-free IRQ %d\n", irq);
+ spin_unlock_irqrestore(&desc->lock, flags);
- p = &action->next;
- if (action->dev_id != dev_id)
- continue;
+ return NULL;
+ }
- /* Found it - now remove it from the list of entries */
- *pp = action->next;
+ if (action->dev_id == dev_id)
+ break;
+ action_ptr = &action->next;
+ }
- /* Currently used only by UML, might disappear one day.*/
+ /* Found it - now remove it from the list of entries: */
+ *action_ptr = action->next;
+
+ /* Currently used only by UML, might disappear one day: */
#ifdef CONFIG_IRQ_RELEASE_METHOD
- if (desc->chip->release)
- desc->chip->release(irq, dev_id);
+ if (desc->chip->release)
+ desc->chip->release(irq, dev_id);
#endif
- if (!desc->action) {
- desc->status |= IRQ_DISABLED;
- if (desc->chip->shutdown)
- desc->chip->shutdown(irq);
- else
- desc->chip->disable(irq);
- }
- spin_unlock_irqrestore(&desc->lock, flags);
- unregister_handler_proc(irq, action);
+ /* If this was the last handler, shut down the IRQ line: */
+ if (!desc->action) {
+ desc->status |= IRQ_DISABLED;
+ if (desc->chip->shutdown)
+ desc->chip->shutdown(irq);
+ else
+ desc->chip->disable(irq);
+ }
+ spin_unlock_irqrestore(&desc->lock, flags);
+
+ unregister_handler_proc(irq, action);
+
+ /* Make sure it's not being used on another CPU: */
+ synchronize_irq(irq);
- /* Make sure it's not being used on another CPU */
- synchronize_irq(irq);
-#ifdef CONFIG_DEBUG_SHIRQ
- /*
- * It's a shared IRQ -- the driver ought to be
- * prepared for it to happen even now it's
- * being freed, so let's make sure.... We do
- * this after actually deregistering it, to
- * make sure that a 'real' IRQ doesn't run in
- * parallel with our fake
- */
- if (action->flags & IRQF_SHARED) {
- local_irq_save(flags);
- action->handler(irq, dev_id);
- local_irq_restore(flags);
- }
-#endif
- kfree(action);
- return;
- }
- printk(KERN_ERR "Trying to free already-free IRQ %d\n", irq);
#ifdef CONFIG_DEBUG_SHIRQ
- dump_stack();
-#endif
- spin_unlock_irqrestore(&desc->lock, flags);
- return;
+ /*
+ * It's a shared IRQ -- the driver ought to be prepared for an IRQ
+ * event to happen even now it's being freed, so let's make sure that
+ * is so by doing an extra call to the handler ....
+ *
+ * ( We do this after actually deregistering it, to make sure that a
+ * 'real' IRQ doesn't run in * parallel with our fake. )
+ */
+ if (action->flags & IRQF_SHARED) {
+ local_irq_save(flags);
+ action->handler(irq, dev_id);
+ local_irq_restore(flags);
}
+#endif
+ return action;
+}
+
+/**
+ * remove_irq - free an interrupt
+ * @irq: Interrupt line to free
+ * @act: irqaction for the interrupt
+ *
+ * Used to remove interrupts statically setup by the early boot process.
+ */
+void remove_irq(unsigned int irq, struct irqaction *act)
+{
+ __free_irq(irq, act->dev_id);
+}
+EXPORT_SYMBOL_GPL(remove_irq);
+
+/**
+ * free_irq - free an interrupt allocated with request_irq
+ * @irq: Interrupt line to free
+ * @dev_id: Device identity to free
+ *
+ * Remove an interrupt handler. The handler is removed and if the
+ * interrupt line is no longer in use by any driver it is disabled.
+ * On a shared IRQ the caller must ensure the interrupt is disabled
+ * on the card it drives before calling this function. The function
+ * does not return until any executing interrupts for this IRQ
+ * have completed.
+ *
+ * This function must not be called from interrupt context.
+ */
+void free_irq(unsigned int irq, void *dev_id)
+{
+ kfree(__free_irq(irq, dev_id));
}
EXPORT_SYMBOL(free_irq);
* the behavior is classified as "will not fix" so we need to
* start nudging drivers away from using that idiom.
*/
- if ((irqflags & (IRQF_SHARED|IRQF_DISABLED))
- == (IRQF_SHARED|IRQF_DISABLED))
- pr_warning("IRQ %d/%s: IRQF_DISABLED is not "
- "guaranteed on shared IRQs\n",
- irq, devname);
+ if ((irqflags & (IRQF_SHARED|IRQF_DISABLED)) ==
+ (IRQF_SHARED|IRQF_DISABLED)) {
+ pr_warning(
+ "IRQ %d/%s: IRQF_DISABLED is not guaranteed on shared IRQs\n",
+ irq, devname);
+ }
#ifdef CONFIG_LOCKDEP
/*
if (!handler)
return -EINVAL;
- action = kmalloc(sizeof(struct irqaction), GFP_ATOMIC);
+ action = kzalloc(sizeof(struct irqaction), GFP_KERNEL);
if (!action)
return -ENOMEM;
action->handler = handler;
action->flags = irqflags;
- cpus_clear(action->mask);
action->name = devname;
- action->next = NULL;
action->dev_id = dev_id;
retval = __setup_irq(irq, desc, action);
struct irq_desc *desc,
int cpu, int nr)
{
- unsigned long bytes;
-
init_kstat_irqs(desc, cpu, nr);
- if (desc->kstat_irqs != old_desc->kstat_irqs) {
- /* Compute how many bytes we need per irq and allocate them */
- bytes = nr * sizeof(unsigned int);
-
- memcpy(desc->kstat_irqs, old_desc->kstat_irqs, bytes);
- }
+ if (desc->kstat_irqs != old_desc->kstat_irqs)
+ memcpy(desc->kstat_irqs, old_desc->kstat_irqs,
+ nr * sizeof(*desc->kstat_irqs));
}
static void free_kstat_irqs(struct irq_desc *old_desc, struct irq_desc *desc)
old_desc->kstat_irqs = NULL;
}
- static void init_copy_one_irq_desc(int irq, struct irq_desc *old_desc,
+ static bool init_copy_one_irq_desc(int irq, struct irq_desc *old_desc,
struct irq_desc *desc, int cpu)
{
memcpy(desc, old_desc, sizeof(struct irq_desc));
+ if (!init_alloc_desc_masks(desc, cpu, false)) {
+ printk(KERN_ERR "irq %d: can not get new irq_desc cpumask "
+ "for migration.\n", irq);
+ return false;
+ }
spin_lock_init(&desc->lock);
desc->cpu = cpu;
lockdep_set_class(&desc->lock, &irq_desc_lock_class);
init_copy_kstat_irqs(old_desc, desc, cpu, nr_cpu_ids);
+ init_copy_desc_masks(old_desc, desc);
arch_init_copy_chip_data(old_desc, desc, cpu);
+ return true;
}
static void free_one_irq_desc(struct irq_desc *old_desc, struct irq_desc *desc)
node = cpu_to_node(cpu);
desc = kzalloc_node(sizeof(*desc), GFP_ATOMIC, node);
if (!desc) {
- printk(KERN_ERR "irq %d: can not get new irq_desc for migration.\n", irq);
+ printk(KERN_ERR "irq %d: can not get new irq_desc "
+ "for migration.\n", irq);
+ /* still use old one */
+ desc = old_desc;
+ goto out_unlock;
+ }
+ if (!init_copy_one_irq_desc(irq, old_desc, desc, cpu)) {
/* still use old one */
+ kfree(desc);
desc = old_desc;
goto out_unlock;
}
- init_copy_one_irq_desc(irq, old_desc, desc, cpu);
irq_desc_ptrs[irq] = desc;
spin_unlock_irqrestore(&sparse_irq_lock, flags);
#include <linux/tracepoint.h>
#include <linux/ftrace.h>
#include <linux/async.h>
+ #include <linux/percpu.h>
#if 0
#define DEBUGP printk
}
#ifdef CONFIG_SMP
+
+ #ifdef CONFIG_HAVE_DYNAMIC_PER_CPU_AREA
+
+ static void *percpu_modalloc(unsigned long size, unsigned long align,
+ const char *name)
+ {
+ void *ptr;
+
+ if (align > PAGE_SIZE) {
+ printk(KERN_WARNING "%s: per-cpu alignment %li > %li\n",
+ name, align, PAGE_SIZE);
+ align = PAGE_SIZE;
+ }
+
+ ptr = __alloc_reserved_percpu(size, align);
+ if (!ptr)
+ printk(KERN_WARNING
+ "Could not allocate %lu bytes percpu data\n", size);
+ return ptr;
+ }
+
+ static void percpu_modfree(void *freeme)
+ {
+ free_percpu(freeme);
+ }
+
+ #else /* ... !CONFIG_HAVE_DYNAMIC_PER_CPU_AREA */
+
/* Number of blocks used and allocated. */
static unsigned int pcpu_num_used, pcpu_num_allocated;
/* Size of each block. -ve means used. */
}
}
- static unsigned int find_pcpusec(Elf_Ehdr *hdr,
- Elf_Shdr *sechdrs,
- const char *secstrings)
- {
- return find_sec(hdr, sechdrs, secstrings, ".data.percpu");
- }
-
- static void percpu_modcopy(void *pcpudest, const void *from, unsigned long size)
- {
- int cpu;
-
- for_each_possible_cpu(cpu)
- memcpy(pcpudest + per_cpu_offset(cpu), from, size);
- }
-
static int percpu_modinit(void)
{
pcpu_num_used = 2;
return 0;
}
__initcall(percpu_modinit);
+
+ #endif /* CONFIG_HAVE_DYNAMIC_PER_CPU_AREA */
+
+ static unsigned int find_pcpusec(Elf_Ehdr *hdr,
+ Elf_Shdr *sechdrs,
+ const char *secstrings)
+ {
+ return find_sec(hdr, sechdrs, secstrings, ".data.percpu");
+ }
+
+ static void percpu_modcopy(void *pcpudest, const void *from, unsigned long size)
+ {
+ int cpu;
+
+ for_each_possible_cpu(cpu)
+ memcpy(pcpudest + per_cpu_offset(cpu), from, size);
+ }
+
#else /* ... !CONFIG_SMP */
+
static inline void *percpu_modalloc(unsigned long size, unsigned long align,
const char *name)
{
/* pcpusec should be 0, and size of that section should be 0. */
BUG_ON(size != 0);
}
+
#endif /* CONFIG_SMP */
#define MODINFO_ATTR(field) \
if (err < 0)
goto free_mod;
-#if defined(CONFIG_MODULE_UNLOAD) && defined(CONFIG_SMP)
- mod->refptr = percpu_modalloc(sizeof(local_t), __alignof__(local_t),
- mod->name);
- if (!mod->refptr) {
- err = -ENOMEM;
- goto free_mod;
- }
-#endif
if (pcpuindex) {
/* We have a special allocation for this section. */
percpu = percpu_modalloc(sechdrs[pcpuindex].sh_size,
mod->name);
if (!percpu) {
err = -ENOMEM;
- goto free_percpu;
+ goto free_mod;
}
sechdrs[pcpuindex].sh_flags &= ~(unsigned long)SHF_ALLOC;
mod->percpu = percpu;
/* Module has been moved. */
mod = (void *)sechdrs[modindex].sh_addr;
+#if defined(CONFIG_MODULE_UNLOAD) && defined(CONFIG_SMP)
+ mod->refptr = percpu_modalloc(sizeof(local_t), __alignof__(local_t),
+ mod->name);
+ if (!mod->refptr) {
+ err = -ENOMEM;
+ goto free_init;
+ }
+#endif
/* Now we've moved module, initialize linked lists, etc. */
module_unload_init(mod);
ftrace_release(mod->module_core, mod->core_size);
free_unload:
module_unload_free(mod);
+ free_init:
+#if defined(CONFIG_MODULE_UNLOAD) && defined(CONFIG_SMP)
+ percpu_modfree(mod->refptr);
+#endif
module_free(mod, mod->module_init);
free_core:
module_free(mod, mod->module_core);
+ /* mod will be freed with core. Don't access it beyond this line! */
free_percpu:
if (percpu)
percpu_modfree(percpu);
-#if defined(CONFIG_MODULE_UNLOAD) && defined(CONFIG_SMP)
- percpu_modfree(mod->refptr);
-#endif
free_mod:
kfree(args);
free_hdr:
* Move the pages to the [file or anon] inactive list.
*/
pagevec_init(&pvec, 1);
- pgmoved = 0;
lru = LRU_BASE + file * LRU_FILE;
spin_lock_irq(&zone->lru_lock);
*/
reclaim_stat->recent_rotated[!!file] += pgmoved;
+ pgmoved = 0;
while (!list_empty(&l_inactive)) {
page = lru_to_page(&l_inactive);
prefetchw_prev_lru_page(page, &l_inactive, flags);
struct reclaim_state reclaim_state = {
.reclaimed_slab = 0,
};
- node_to_cpumask_ptr(cpumask, pgdat->node_id);
+ const struct cpumask *cpumask = cpumask_of_node(pgdat->node_id);
if (!cpumask_empty(cpumask))
set_cpus_allowed_ptr(tsk, cpumask);
if (action == CPU_ONLINE || action == CPU_ONLINE_FROZEN) {
for_each_node_state(nid, N_HIGH_MEMORY) {
pg_data_t *pgdat = NODE_DATA(nid);
- node_to_cpumask_ptr(mask, pgdat->node_id);
+ const struct cpumask *mask;
+
+ mask = cpumask_of_node(pgdat->node_id);
if (cpumask_any_and(cpu_online_mask, mask) < nr_cpu_ids)
/* One of our CPUs online: restore mask */
projects / linux-2.6-omap-h63xx.git / commitdiff