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-rw-r--r--arch/x86/kernel/Makefile2
-rw-r--r--arch/x86/kernel/apic.c2
-rw-r--r--arch/x86/kernel/cpu/cpufreq/powernow-k8.c18
-rw-r--r--arch/x86/kernel/cpu/cpufreq/powernow-k8.h17
-rw-r--r--arch/x86/kernel/ds.c88
-rw-r--r--arch/x86/kernel/i387.c2
-rw-r--r--arch/x86/kernel/io_apic.c48
-rw-r--r--arch/x86/kernel/kvmclock.c2
-rw-r--r--arch/x86/kernel/pci-calgary_64.c2
-rw-r--r--arch/x86/kernel/xsave.c2
10 files changed, 107 insertions, 76 deletions
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index e489ff9cb3e2..b62a7667828e 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -41,7 +41,7 @@ obj-$(CONFIG_X86_TRAMPOLINE) += trampoline.o
obj-y += process.o
obj-y += i387.o xsave.o
obj-y += ptrace.o
-obj-y += ds.o
+obj-$(CONFIG_X86_DS) += ds.o
obj-$(CONFIG_X86_32) += tls.o
obj-$(CONFIG_IA32_EMULATION) += tls.o
obj-y += step.o
diff --git a/arch/x86/kernel/apic.c b/arch/x86/kernel/apic.c
index 04a7f960bbc0..16f94879b525 100644
--- a/arch/x86/kernel/apic.c
+++ b/arch/x86/kernel/apic.c
@@ -1315,7 +1315,7 @@ void enable_x2apic(void)
}
}
-void enable_IR_x2apic(void)
+void __init enable_IR_x2apic(void)
{
#ifdef CONFIG_INTR_REMAP
int ret;
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index d3dcd58b87cd..7f05f44b97e9 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -115,9 +115,20 @@ static int query_current_values_with_pending_wait(struct powernow_k8_data *data)
u32 i = 0;
if (cpu_family == CPU_HW_PSTATE) {
- rdmsr(MSR_PSTATE_STATUS, lo, hi);
- i = lo & HW_PSTATE_MASK;
- data->currpstate = i;
+ if (data->currpstate == HW_PSTATE_INVALID) {
+ /* read (initial) hw pstate if not yet set */
+ rdmsr(MSR_PSTATE_STATUS, lo, hi);
+ i = lo & HW_PSTATE_MASK;
+
+ /*
+ * a workaround for family 11h erratum 311 might cause
+ * an "out-of-range Pstate if the core is in Pstate-0
+ */
+ if (i >= data->numps)
+ data->currpstate = HW_PSTATE_0;
+ else
+ data->currpstate = i;
+ }
return 0;
}
do {
@@ -1121,6 +1132,7 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
}
data->cpu = pol->cpu;
+ data->currpstate = HW_PSTATE_INVALID;
if (powernow_k8_cpu_init_acpi(data)) {
/*
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.h b/arch/x86/kernel/cpu/cpufreq/powernow-k8.h
index ab48cfed4d96..65cfb5d7f77f 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.h
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.h
@@ -5,6 +5,19 @@
* http://www.gnu.org/licenses/gpl.html
*/
+
+enum pstate {
+ HW_PSTATE_INVALID = 0xff,
+ HW_PSTATE_0 = 0,
+ HW_PSTATE_1 = 1,
+ HW_PSTATE_2 = 2,
+ HW_PSTATE_3 = 3,
+ HW_PSTATE_4 = 4,
+ HW_PSTATE_5 = 5,
+ HW_PSTATE_6 = 6,
+ HW_PSTATE_7 = 7,
+};
+
struct powernow_k8_data {
unsigned int cpu;
@@ -23,7 +36,9 @@ struct powernow_k8_data {
u32 exttype; /* extended interface = 1 */
/* keep track of the current fid / vid or pstate */
- u32 currvid, currfid, currpstate;
+ u32 currvid;
+ u32 currfid;
+ enum pstate currpstate;
/* the powernow_table includes all frequency and vid/fid pairings:
* fid are the lower 8 bits of the index, vid are the upper 8 bits.
diff --git a/arch/x86/kernel/ds.c b/arch/x86/kernel/ds.c
index d1a121443bde..a2d1176c38ee 100644
--- a/arch/x86/kernel/ds.c
+++ b/arch/x86/kernel/ds.c
@@ -21,8 +21,6 @@
*/
-#ifdef CONFIG_X86_DS
-
#include <asm/ds.h>
#include <linux/errno.h>
@@ -211,14 +209,15 @@ static DEFINE_PER_CPU(struct ds_context *, system_context);
static inline struct ds_context *ds_get_context(struct task_struct *task)
{
struct ds_context *context;
+ unsigned long irq;
- spin_lock(&ds_lock);
+ spin_lock_irqsave(&ds_lock, irq);
context = (task ? task->thread.ds_ctx : this_system_context);
if (context)
context->count++;
- spin_unlock(&ds_lock);
+ spin_unlock_irqrestore(&ds_lock, irq);
return context;
}
@@ -226,55 +225,46 @@ static inline struct ds_context *ds_get_context(struct task_struct *task)
/*
* Same as ds_get_context, but allocates the context and it's DS
* structure, if necessary; returns NULL; if out of memory.
- *
- * pre: requires ds_lock to be held
*/
static inline struct ds_context *ds_alloc_context(struct task_struct *task)
{
struct ds_context **p_context =
(task ? &task->thread.ds_ctx : &this_system_context);
struct ds_context *context = *p_context;
+ unsigned long irq;
if (!context) {
- spin_unlock(&ds_lock);
-
context = kzalloc(sizeof(*context), GFP_KERNEL);
-
- if (!context) {
- spin_lock(&ds_lock);
+ if (!context)
return NULL;
- }
context->ds = kzalloc(ds_cfg.sizeof_ds, GFP_KERNEL);
if (!context->ds) {
kfree(context);
- spin_lock(&ds_lock);
return NULL;
}
- spin_lock(&ds_lock);
- /*
- * Check for race - another CPU could have allocated
- * it meanwhile:
- */
+ spin_lock_irqsave(&ds_lock, irq);
+
if (*p_context) {
kfree(context->ds);
kfree(context);
- return *p_context;
- }
- *p_context = context;
+ context = *p_context;
+ } else {
+ *p_context = context;
- context->this = p_context;
- context->task = task;
+ context->this = p_context;
+ context->task = task;
- if (task)
- set_tsk_thread_flag(task, TIF_DS_AREA_MSR);
+ if (task)
+ set_tsk_thread_flag(task, TIF_DS_AREA_MSR);
- if (!task || (task == current))
- wrmsr(MSR_IA32_DS_AREA, (unsigned long)context->ds, 0);
-
- get_tracer(task);
+ if (!task || (task == current))
+ wrmsrl(MSR_IA32_DS_AREA,
+ (unsigned long)context->ds);
+ }
+ spin_unlock_irqrestore(&ds_lock, irq);
}
context->count++;
@@ -288,10 +278,12 @@ static inline struct ds_context *ds_alloc_context(struct task_struct *task)
*/
static inline void ds_put_context(struct ds_context *context)
{
+ unsigned long irq;
+
if (!context)
return;
- spin_lock(&ds_lock);
+ spin_lock_irqsave(&ds_lock, irq);
if (--context->count)
goto out;
@@ -313,7 +305,7 @@ static inline void ds_put_context(struct ds_context *context)
kfree(context->ds);
kfree(context);
out:
- spin_unlock(&ds_lock);
+ spin_unlock_irqrestore(&ds_lock, irq);
}
@@ -384,6 +376,7 @@ static int ds_request(struct task_struct *task, void *base, size_t size,
struct ds_context *context;
unsigned long buffer, adj;
const unsigned long alignment = (1 << 3);
+ unsigned long irq;
int error = 0;
if (!ds_cfg.sizeof_ds)
@@ -398,26 +391,27 @@ static int ds_request(struct task_struct *task, void *base, size_t size,
return -EOPNOTSUPP;
- spin_lock(&ds_lock);
-
- error = -ENOMEM;
context = ds_alloc_context(task);
if (!context)
- goto out_unlock;
+ return -ENOMEM;
+
+ spin_lock_irqsave(&ds_lock, irq);
error = -EPERM;
if (!check_tracer(task))
goto out_unlock;
+ get_tracer(task);
+
error = -EALREADY;
if (context->owner[qual] == current)
- goto out_unlock;
+ goto out_put_tracer;
error = -EPERM;
if (context->owner[qual] != NULL)
- goto out_unlock;
+ goto out_put_tracer;
context->owner[qual] = current;
- spin_unlock(&ds_lock);
+ spin_unlock_irqrestore(&ds_lock, irq);
error = -ENOMEM;
@@ -465,10 +459,17 @@ static int ds_request(struct task_struct *task, void *base, size_t size,
out_release:
context->owner[qual] = NULL;
ds_put_context(context);
+ put_tracer(task);
+ return error;
+
+ out_put_tracer:
+ spin_unlock_irqrestore(&ds_lock, irq);
+ ds_put_context(context);
+ put_tracer(task);
return error;
out_unlock:
- spin_unlock(&ds_lock);
+ spin_unlock_irqrestore(&ds_lock, irq);
ds_put_context(context);
return error;
}
@@ -818,13 +819,21 @@ static const struct ds_configuration ds_cfg_var = {
.sizeof_ds = sizeof(long) * 12,
.sizeof_field = sizeof(long),
.sizeof_rec[ds_bts] = sizeof(long) * 3,
+#ifdef __i386__
.sizeof_rec[ds_pebs] = sizeof(long) * 10
+#else
+ .sizeof_rec[ds_pebs] = sizeof(long) * 18
+#endif
};
static const struct ds_configuration ds_cfg_64 = {
.sizeof_ds = 8 * 12,
.sizeof_field = 8,
.sizeof_rec[ds_bts] = 8 * 3,
+#ifdef __i386__
.sizeof_rec[ds_pebs] = 8 * 10
+#else
+ .sizeof_rec[ds_pebs] = 8 * 18
+#endif
};
static inline void
@@ -878,4 +887,3 @@ void ds_free(struct ds_context *context)
while (leftovers--)
ds_put_context(context);
}
-#endif /* CONFIG_X86_DS */
diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c
index 1f20608d4ca8..b0f61f0dcd0a 100644
--- a/arch/x86/kernel/i387.c
+++ b/arch/x86/kernel/i387.c
@@ -58,7 +58,7 @@ void __cpuinit mxcsr_feature_mask_init(void)
stts();
}
-void __init init_thread_xstate(void)
+void __cpuinit init_thread_xstate(void)
{
if (!HAVE_HWFP) {
xstate_size = sizeof(struct i387_soft_struct);
diff --git a/arch/x86/kernel/io_apic.c b/arch/x86/kernel/io_apic.c
index c9513e1ff28d..9043251210fb 100644
--- a/arch/x86/kernel/io_apic.c
+++ b/arch/x86/kernel/io_apic.c
@@ -3608,27 +3608,7 @@ int __init io_apic_get_redir_entries (int ioapic)
int __init probe_nr_irqs(void)
{
- int idx;
- int nr = 0;
-#ifndef CONFIG_XEN
- int nr_min = 32;
-#else
- int nr_min = NR_IRQS;
-#endif
-
- for (idx = 0; idx < nr_ioapics; idx++)
- nr += io_apic_get_redir_entries(idx) + 1;
-
- /* double it for hotplug and msi and nmi */
- nr <<= 1;
-
- /* something wrong ? */
- if (nr < nr_min)
- nr = nr_min;
- if (WARN_ON(nr > NR_IRQS))
- nr = NR_IRQS;
-
- return nr;
+ return NR_IRQS;
}
/* --------------------------------------------------------------------------
@@ -3775,7 +3755,9 @@ int acpi_get_override_irq(int bus_irq, int *trigger, int *polarity)
void __init setup_ioapic_dest(void)
{
int pin, ioapic, irq, irq_entry;
+ struct irq_desc *desc;
struct irq_cfg *cfg;
+ cpumask_t mask;
if (skip_ioapic_setup == 1)
return;
@@ -3792,16 +3774,30 @@ void __init setup_ioapic_dest(void)
* cpu is online.
*/
cfg = irq_cfg(irq);
- if (!cfg->vector)
+ if (!cfg->vector) {
setup_IO_APIC_irq(ioapic, pin, irq,
irq_trigger(irq_entry),
irq_polarity(irq_entry));
+ continue;
+
+ }
+
+ /*
+ * Honour affinities which have been set in early boot
+ */
+ desc = irq_to_desc(irq);
+ if (desc->status &
+ (IRQ_NO_BALANCING | IRQ_AFFINITY_SET))
+ mask = desc->affinity;
+ else
+ mask = TARGET_CPUS;
+
#ifdef CONFIG_INTR_REMAP
- else if (intr_remapping_enabled)
- set_ir_ioapic_affinity_irq(irq, TARGET_CPUS);
-#endif
+ if (intr_remapping_enabled)
+ set_ir_ioapic_affinity_irq(irq, mask);
else
- set_ioapic_affinity_irq(irq, TARGET_CPUS);
+#endif
+ set_ioapic_affinity_irq(irq, mask);
}
}
diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c
index 1c9cc431ea4f..e169ae9b6a62 100644
--- a/arch/x86/kernel/kvmclock.c
+++ b/arch/x86/kernel/kvmclock.c
@@ -128,7 +128,7 @@ static int kvm_register_clock(char *txt)
}
#ifdef CONFIG_X86_LOCAL_APIC
-static void __devinit kvm_setup_secondary_clock(void)
+static void __cpuinit kvm_setup_secondary_clock(void)
{
/*
* Now that the first cpu already had this clocksource initialized,
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
index e1e731d78f38..d28bbdc35e4e 100644
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -1567,7 +1567,7 @@ static int __init calgary_parse_options(char *p)
++p;
if (*p == '\0')
break;
- bridge = simple_strtol(p, &endp, 0);
+ bridge = simple_strtoul(p, &endp, 0);
if (p == endp)
break;
diff --git a/arch/x86/kernel/xsave.c b/arch/x86/kernel/xsave.c
index b13acb75e822..15c3e6999182 100644
--- a/arch/x86/kernel/xsave.c
+++ b/arch/x86/kernel/xsave.c
@@ -310,7 +310,7 @@ static void __init setup_xstate_init(void)
/*
* Enable and initialize the xsave feature.
*/
-void __init xsave_cntxt_init(void)
+void __ref xsave_cntxt_init(void)
{
unsigned int eax, ebx, ecx, edx;
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