obj-$(CONFIG_PCI) += early-quirks.o
apm-y := apm_32.o
obj-$(CONFIG_APM) += apm.o
-obj-$(CONFIG_X86_SMP) += smp_$(BITS).o smpboot_$(BITS).o smpboot.o tsc_sync.o
+obj-$(CONFIG_X86_SMP) += smp_$(BITS).o smpboot_$(BITS).o smp.o
+obj-$(CONFIG_X86_SMP) += smpboot.o tsc_sync.o
obj-$(CONFIG_X86_32_SMP) += smpcommon.o
obj-$(CONFIG_X86_64_SMP) += smp_64.o smpboot_64.o tsc_sync.o smpcommon.o
obj-$(CONFIG_X86_TRAMPOLINE) += trampoline_$(BITS).o
--- /dev/null
+#include <linux/init.h>
+
+#include <linux/mm.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/kernel_stat.h>
+#include <linux/mc146818rtc.h>
+#include <linux/cache.h>
+#include <linux/interrupt.h>
+#include <linux/cpu.h>
+
+#include <asm/mtrr.h>
+#include <asm/tlbflush.h>
+#include <asm/mmu_context.h>
+#include <asm/proto.h>
+#ifdef CONFIG_X86_32
+#include <mach_apic.h>
+#include <mach_ipi.h>
+#else
+#include <asm/mach_apic.h>
+#endif
+
+/*
+ * this function sends a 'reschedule' IPI to another CPU.
+ * it goes straight through and wastes no time serializing
+ * anything. Worst case is that we lose a reschedule ...
+ */
+static void native_smp_send_reschedule(int cpu)
+{
+ WARN_ON(cpu_is_offline(cpu));
+ send_IPI_mask(cpumask_of_cpu(cpu), RESCHEDULE_VECTOR);
+}
+
+/*
+ * Structure and data for smp_call_function(). This is designed to minimise
+ * static memory requirements. It also looks cleaner.
+ */
+static DEFINE_SPINLOCK(call_lock);
+
+struct call_data_struct {
+ void (*func) (void *info);
+ void *info;
+ atomic_t started;
+ atomic_t finished;
+ int wait;
+};
+
+void lock_ipi_call_lock(void)
+{
+ spin_lock_irq(&call_lock);
+}
+
+void unlock_ipi_call_lock(void)
+{
+ spin_unlock_irq(&call_lock);
+}
+
+static struct call_data_struct *call_data;
+
+static void __smp_call_function(void (*func) (void *info), void *info,
+ int nonatomic, int wait)
+{
+ struct call_data_struct data;
+ int cpus = num_online_cpus() - 1;
+
+ if (!cpus)
+ return;
+
+ data.func = func;
+ data.info = info;
+ atomic_set(&data.started, 0);
+ data.wait = wait;
+ if (wait)
+ atomic_set(&data.finished, 0);
+
+ call_data = &data;
+ mb();
+
+ /* Send a message to all other CPUs and wait for them to respond */
+ send_IPI_allbutself(CALL_FUNCTION_VECTOR);
+
+ /* Wait for response */
+ while (atomic_read(&data.started) != cpus)
+ cpu_relax();
+
+ if (wait)
+ while (atomic_read(&data.finished) != cpus)
+ cpu_relax();
+}
+
+
+/**
+ * smp_call_function_mask(): Run a function on a set of other CPUs.
+ * @mask: The set of cpus to run on. Must not include the current cpu.
+ * @func: The function to run. This must be fast and non-blocking.
+ * @info: An arbitrary pointer to pass to the function.
+ * @wait: If true, wait (atomically) until function has completed on other CPUs.
+ *
+ * Returns 0 on success, else a negative status code.
+ *
+ * If @wait is true, then returns once @func has returned; otherwise
+ * it returns just before the target cpu calls @func.
+ *
+ * You must not call this function with disabled interrupts or from a
+ * hardware interrupt handler or from a bottom half handler.
+ */
+static int
+native_smp_call_function_mask(cpumask_t mask,
+ void (*func)(void *), void *info,
+ int wait)
+{
+ struct call_data_struct data;
+ cpumask_t allbutself;
+ int cpus;
+
+ /* Can deadlock when called with interrupts disabled */
+ WARN_ON(irqs_disabled());
+
+ /* Holding any lock stops cpus from going down. */
+ spin_lock(&call_lock);
+
+ allbutself = cpu_online_map;
+ cpu_clear(smp_processor_id(), allbutself);
+
+ cpus_and(mask, mask, allbutself);
+ cpus = cpus_weight(mask);
+
+ if (!cpus) {
+ spin_unlock(&call_lock);
+ return 0;
+ }
+
+ data.func = func;
+ data.info = info;
+ atomic_set(&data.started, 0);
+ data.wait = wait;
+ if (wait)
+ atomic_set(&data.finished, 0);
+
+ call_data = &data;
+ wmb();
+
+ /* Send a message to other CPUs */
+ if (cpus_equal(mask, allbutself))
+ send_IPI_allbutself(CALL_FUNCTION_VECTOR);
+ else
+ send_IPI_mask(mask, CALL_FUNCTION_VECTOR);
+
+ /* Wait for response */
+ while (atomic_read(&data.started) != cpus)
+ cpu_relax();
+
+ if (wait)
+ while (atomic_read(&data.finished) != cpus)
+ cpu_relax();
+ spin_unlock(&call_lock);
+
+ return 0;
+}
+
+static void stop_this_cpu(void *dummy)
+{
+ local_irq_disable();
+ /*
+ * Remove this CPU:
+ */
+ cpu_clear(smp_processor_id(), cpu_online_map);
+ disable_local_APIC();
+ if (hlt_works(smp_processor_id()))
+ for (;;) halt();
+ for (;;);
+}
+
+/*
+ * this function calls the 'stop' function on all other CPUs in the system.
+ */
+
+static void native_smp_send_stop(void)
+{
+ int nolock;
+ unsigned long flags;
+
+ if (reboot_force)
+ return;
+
+ /* Don't deadlock on the call lock in panic */
+ nolock = !spin_trylock(&call_lock);
+ local_irq_save(flags);
+ __smp_call_function(stop_this_cpu, NULL, 0, 0);
+ if (!nolock)
+ spin_unlock(&call_lock);
+ disable_local_APIC();
+ local_irq_restore(flags);
+}
+
+/*
+ * Reschedule call back. Nothing to do,
+ * all the work is done automatically when
+ * we return from the interrupt.
+ */
+void smp_reschedule_interrupt(struct pt_regs *regs)
+{
+ ack_APIC_irq();
+#ifdef CONFIG_X86_32
+ __get_cpu_var(irq_stat).irq_resched_count++;
+#else
+ add_pda(irq_resched_count, 1);
+#endif
+}
+
+void smp_call_function_interrupt(struct pt_regs *regs)
+{
+ void (*func) (void *info) = call_data->func;
+ void *info = call_data->info;
+ int wait = call_data->wait;
+
+ ack_APIC_irq();
+ /*
+ * Notify initiating CPU that I've grabbed the data and am
+ * about to execute the function
+ */
+ mb();
+ atomic_inc(&call_data->started);
+ /*
+ * At this point the info structure may be out of scope unless wait==1
+ */
+ irq_enter();
+ (*func)(info);
+#ifdef CONFIG_X86_32
+ __get_cpu_var(irq_stat).irq_call_count++;
+#else
+ add_pda(irq_call_count, 1);
+#endif
+ irq_exit();
+
+ if (wait) {
+ mb();
+ atomic_inc(&call_data->finished);
+ }
+}
+
+struct smp_ops smp_ops = {
+ .smp_prepare_boot_cpu = native_smp_prepare_boot_cpu,
+ .smp_prepare_cpus = native_smp_prepare_cpus,
+ .cpu_up = native_cpu_up,
+ .smp_cpus_done = native_smp_cpus_done,
+
+ .smp_send_stop = native_smp_send_stop,
+ .smp_send_reschedule = native_smp_send_reschedule,
+ .smp_call_function_mask = native_smp_call_function_mask,
+};
+EXPORT_SYMBOL_GPL(smp_ops);
+
on_each_cpu(do_flush_tlb_all, NULL, 1, 1);
}
-/*
- * this function sends a 'reschedule' IPI to another CPU.
- * it goes straight through and wastes no time serializing
- * anything. Worst case is that we lose a reschedule ...
- */
-static void native_smp_send_reschedule(int cpu)
-{
- WARN_ON(cpu_is_offline(cpu));
- send_IPI_mask(cpumask_of_cpu(cpu), RESCHEDULE_VECTOR);
-}
-
-/*
- * Structure and data for smp_call_function(). This is designed to minimise
- * static memory requirements. It also looks cleaner.
- */
-static DEFINE_SPINLOCK(call_lock);
-
-struct call_data_struct {
- void (*func) (void *info);
- void *info;
- atomic_t started;
- atomic_t finished;
- int wait;
-};
-
-void lock_ipi_call_lock(void)
-{
- spin_lock_irq(&call_lock);
-}
-
-void unlock_ipi_call_lock(void)
-{
- spin_unlock_irq(&call_lock);
-}
-
-static struct call_data_struct *call_data;
-
-static void __smp_call_function(void (*func) (void *info), void *info,
- int nonatomic, int wait)
-{
- struct call_data_struct data;
- int cpus = num_online_cpus() - 1;
-
- if (!cpus)
- return;
-
- data.func = func;
- data.info = info;
- atomic_set(&data.started, 0);
- data.wait = wait;
- if (wait)
- atomic_set(&data.finished, 0);
-
- call_data = &data;
- mb();
-
- /* Send a message to all other CPUs and wait for them to respond */
- send_IPI_allbutself(CALL_FUNCTION_VECTOR);
-
- /* Wait for response */
- while (atomic_read(&data.started) != cpus)
- cpu_relax();
-
- if (wait)
- while (atomic_read(&data.finished) != cpus)
- cpu_relax();
-}
-
-
-/**
- * smp_call_function_mask(): Run a function on a set of other CPUs.
- * @mask: The set of cpus to run on. Must not include the current cpu.
- * @func: The function to run. This must be fast and non-blocking.
- * @info: An arbitrary pointer to pass to the function.
- * @wait: If true, wait (atomically) until function has completed on other CPUs.
- *
- * Returns 0 on success, else a negative status code.
- *
- * If @wait is true, then returns once @func has returned; otherwise
- * it returns just before the target cpu calls @func.
- *
- * You must not call this function with disabled interrupts or from a
- * hardware interrupt handler or from a bottom half handler.
- */
-static int
-native_smp_call_function_mask(cpumask_t mask,
- void (*func)(void *), void *info,
- int wait)
-{
- struct call_data_struct data;
- cpumask_t allbutself;
- int cpus;
-
- /* Can deadlock when called with interrupts disabled */
- WARN_ON(irqs_disabled());
-
- /* Holding any lock stops cpus from going down. */
- spin_lock(&call_lock);
-
- allbutself = cpu_online_map;
- cpu_clear(smp_processor_id(), allbutself);
-
- cpus_and(mask, mask, allbutself);
- cpus = cpus_weight(mask);
-
- if (!cpus) {
- spin_unlock(&call_lock);
- return 0;
- }
-
- data.func = func;
- data.info = info;
- atomic_set(&data.started, 0);
- data.wait = wait;
- if (wait)
- atomic_set(&data.finished, 0);
-
- call_data = &data;
- wmb();
-
- /* Send a message to other CPUs */
- if (cpus_equal(mask, allbutself))
- send_IPI_allbutself(CALL_FUNCTION_VECTOR);
- else
- send_IPI_mask(mask, CALL_FUNCTION_VECTOR);
-
- /* Wait for response */
- while (atomic_read(&data.started) != cpus)
- cpu_relax();
-
- if (wait)
- while (atomic_read(&data.finished) != cpus)
- cpu_relax();
- spin_unlock(&call_lock);
-
- return 0;
-}
-
-static void stop_this_cpu (void * dummy)
-{
- local_irq_disable();
- /*
- * Remove this CPU:
- */
- cpu_clear(smp_processor_id(), cpu_online_map);
- disable_local_APIC();
- if (hlt_works(smp_processor_id()))
- for(;;) halt();
- for (;;);
-}
-
-/*
- * this function calls the 'stop' function on all other CPUs in the system.
- */
-
-static void native_smp_send_stop(void)
-{
- int nolock;
- unsigned long flags;
-
- if (reboot_force)
- return;
-
- /* Don't deadlock on the call lock in panic */
- nolock = !spin_trylock(&call_lock);
- local_irq_save(flags);
- __smp_call_function(stop_this_cpu, NULL, 0, 0);
- if (!nolock)
- spin_unlock(&call_lock);
- disable_local_APIC();
- local_irq_restore(flags);
-}
-
-/*
- * Reschedule call back. Nothing to do,
- * all the work is done automatically when
- * we return from the interrupt.
- */
-void smp_reschedule_interrupt(struct pt_regs *regs)
-{
- ack_APIC_irq();
- __get_cpu_var(irq_stat).irq_resched_count++;
-}
-
-void smp_call_function_interrupt(struct pt_regs *regs)
-{
- void (*func) (void *info) = call_data->func;
- void *info = call_data->info;
- int wait = call_data->wait;
-
- ack_APIC_irq();
- /*
- * Notify initiating CPU that I've grabbed the data and am
- * about to execute the function
- */
- mb();
- atomic_inc(&call_data->started);
- /*
- * At this point the info structure may be out of scope unless wait==1
- */
- irq_enter();
- (*func)(info);
- __get_cpu_var(irq_stat).irq_call_count++;
- irq_exit();
-
- if (wait) {
- mb();
- atomic_inc(&call_data->finished);
- }
-}
-
static int convert_apicid_to_cpu(int apic_id)
{
int i;
return cpuid >= 0 ? cpuid : 0;
}
-
-struct smp_ops smp_ops = {
- .smp_prepare_boot_cpu = native_smp_prepare_boot_cpu,
- .smp_prepare_cpus = native_smp_prepare_cpus,
- .cpu_up = native_cpu_up,
- .smp_cpus_done = native_smp_cpus_done,
-
- .smp_send_stop = native_smp_send_stop,
- .smp_send_reschedule = native_smp_send_reschedule,
- .smp_call_function_mask = native_smp_call_function_mask,
-};
-EXPORT_SYMBOL_GPL(smp_ops);
{
on_each_cpu(do_flush_tlb_all, NULL, 1, 1);
}
-
-/*
- * this function sends a 'reschedule' IPI to another CPU.
- * it goes straight through and wastes no time serializing
- * anything. Worst case is that we lose a reschedule ...
- */
-
-static void native_smp_send_reschedule(int cpu)
-{
- WARN_ON(cpu_is_offline(cpu));
- send_IPI_mask(cpumask_of_cpu(cpu), RESCHEDULE_VECTOR);
-}
-
-/*
- * Structure and data for smp_call_function(). This is designed to minimise
- * static memory requirements. It also looks cleaner.
- */
-static DEFINE_SPINLOCK(call_lock);
-
-struct call_data_struct {
- void (*func) (void *info);
- void *info;
- atomic_t started;
- atomic_t finished;
- int wait;
-};
-
-static struct call_data_struct * call_data;
-
-void lock_ipi_call_lock(void)
-{
- spin_lock_irq(&call_lock);
-}
-
-void unlock_ipi_call_lock(void)
-{
- spin_unlock_irq(&call_lock);
-}
-
-static void __smp_call_function(void (*func) (void *info), void *info,
- int nonatomic, int wait)
-{
- struct call_data_struct data;
- int cpus = num_online_cpus() - 1;
-
- if (!cpus)
- return;
-
- data.func = func;
- data.info = info;
- atomic_set(&data.started, 0);
- data.wait = wait;
- if (wait)
- atomic_set(&data.finished, 0);
-
- call_data = &data;
- mb();
-
- /* Send a message to all other CPUs and wait for them to respond */
- send_IPI_allbutself(CALL_FUNCTION_VECTOR);
-
- /* Wait for response */
- while (atomic_read(&data.started) != cpus)
- cpu_relax();
-
- if (wait)
- while (atomic_read(&data.finished) != cpus)
- cpu_relax();
-}
-
-
-int native_smp_call_function_mask(cpumask_t mask,
- void (*func)(void *), void *info,
- int wait)
-{
- struct call_data_struct data;
- cpumask_t allbutself;
- int cpus;
-
- /* Can deadlock when called with interrupts disabled */
- WARN_ON(irqs_disabled());
-
- /* Holding any lock stops cpus from going down. */
- spin_lock(&call_lock);
-
- allbutself = cpu_online_map;
- cpu_clear(smp_processor_id(), allbutself);
-
- cpus_and(mask, mask, allbutself);
- cpus = cpus_weight(mask);
-
- if (!cpus) {
- spin_unlock(&call_lock);
- return 0;
- }
-
- data.func = func;
- data.info = info;
- atomic_set(&data.started, 0);
- data.wait = wait;
- if (wait)
- atomic_set(&data.finished, 0);
-
- call_data = &data;
- wmb();
-
- /* Send a message to other CPUs */
- if (cpus_equal(mask, allbutself))
- send_IPI_allbutself(CALL_FUNCTION_VECTOR);
- else
- send_IPI_mask(mask, CALL_FUNCTION_VECTOR);
-
- /* Wait for response */
- while (atomic_read(&data.started) != cpus)
- cpu_relax();
-
- if (wait)
- while (atomic_read(&data.finished) != cpus)
- cpu_relax();
-
- spin_unlock(&call_lock);
-
- return 0;
-}
-
-static void stop_this_cpu(void *dummy)
-{
- local_irq_disable();
- /*
- * Remove this CPU:
- */
- cpu_clear(smp_processor_id(), cpu_online_map);
- disable_local_APIC();
- if (hlt_works(smp_processor_id()))
- for (;;) halt();
- for (;;);
-}
-
-void native_smp_send_stop(void)
-{
- int nolock;
- unsigned long flags;
-
- if (reboot_force)
- return;
-
- /* Don't deadlock on the call lock in panic */
- nolock = !spin_trylock(&call_lock);
- local_irq_save(flags);
- __smp_call_function(stop_this_cpu, NULL, 0, 0);
- if (!nolock)
- spin_unlock(&call_lock);
- disable_local_APIC();
- local_irq_restore(flags);
-}
-
-/*
- * Reschedule call back. Nothing to do,
- * all the work is done automatically when
- * we return from the interrupt.
- */
-asmlinkage void smp_reschedule_interrupt(void)
-{
- ack_APIC_irq();
- add_pda(irq_resched_count, 1);
-}
-
-asmlinkage void smp_call_function_interrupt(void)
-{
- void (*func) (void *info) = call_data->func;
- void *info = call_data->info;
- int wait = call_data->wait;
-
- ack_APIC_irq();
- /*
- * Notify initiating CPU that I've grabbed the data and am
- * about to execute the function
- */
- mb();
- atomic_inc(&call_data->started);
- /*
- * At this point the info structure may be out of scope unless wait==1
- */
- exit_idle();
- irq_enter();
- (*func)(info);
- add_pda(irq_call_count, 1);
- irq_exit();
- if (wait) {
- mb();
- atomic_inc(&call_data->finished);
- }
-}
-
-struct smp_ops smp_ops = {
- .smp_prepare_boot_cpu = native_smp_prepare_boot_cpu,
- .smp_prepare_cpus = native_smp_prepare_cpus,
- .smp_cpus_done = native_smp_cpus_done,
-
- .smp_send_stop = native_smp_send_stop,
- .smp_send_reschedule = native_smp_send_reschedule,
- .smp_call_function_mask = native_smp_call_function_mask,
- .cpu_up = native_cpu_up,
-};
-EXPORT_SYMBOL_GPL(smp_ops);
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