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xen/x86-alloc-cpu-structs.patch

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Index: xen-3.3.1-testing/xen/arch/x86/acpi/cpufreq/cpufreq.c
===================================================================
--- xen-3.3.1-testing.orig/xen/arch/x86/acpi/cpufreq/cpufreq.c
+++ xen-3.3.1-testing/xen/arch/x86/acpi/cpufreq/cpufreq.c
@@ -44,7 +44,7 @@
#include <acpi/acpi.h>
#include <acpi/cpufreq/cpufreq.h>
-struct processor_pminfo processor_pminfo[NR_CPUS];
+struct processor_pminfo *__read_mostly processor_pminfo[NR_CPUS];
struct cpufreq_policy xen_px_policy[NR_CPUS];
static cpumask_t *cpufreq_dom_pt;
@@ -430,7 +430,7 @@ acpi_cpufreq_cpu_init(struct cpufreq_pol
drv_data[cpu] = data;
- data->acpi_data = &processor_pminfo[cpu].perf;
+ data->acpi_data = &processor_pminfo[cpu]->perf;
perf = data->acpi_data;
policy->shared_type = perf->shared_type;
@@ -569,8 +569,8 @@ int cpufreq_dom_init(void)
cpufreq_dom_max = 0;
for_each_online_cpu(i) {
- if (cpufreq_dom_max < processor_pminfo[i].perf.domain_info.domain)
- cpufreq_dom_max = processor_pminfo[i].perf.domain_info.domain;
+ if (cpufreq_dom_max < processor_pminfo[i]->perf.domain_info.domain)
+ cpufreq_dom_max = processor_pminfo[i]->perf.domain_info.domain;
}
cpufreq_dom_max++;
@@ -586,13 +586,13 @@ int cpufreq_dom_init(void)
memset(cpufreq_dom_pt, 0, cpufreq_dom_max * sizeof(cpumask_t));
for_each_online_cpu(i) {
- __set_bit(processor_pminfo[i].perf.domain_info.domain, cpufreq_dom_mask);
- cpu_set(i, cpufreq_dom_pt[processor_pminfo[i].perf.domain_info.domain]);
+ __set_bit(processor_pminfo[i]->perf.domain_info.domain, cpufreq_dom_mask);
+ cpu_set(i, cpufreq_dom_pt[processor_pminfo[i]->perf.domain_info.domain]);
}
for_each_online_cpu(i)
- processor_pminfo[i].perf.shared_cpu_map =
- cpufreq_dom_pt[processor_pminfo[i].perf.domain_info.domain];
+ processor_pminfo[i]->perf.shared_cpu_map =
+ cpufreq_dom_pt[processor_pminfo[i]->perf.domain_info.domain];
return 0;
}
Index: xen-3.3.1-testing/xen/arch/x86/acpi/cpufreq/powernow.c
===================================================================
--- xen-3.3.1-testing.orig/xen/arch/x86/acpi/cpufreq/powernow.c
+++ xen-3.3.1-testing/xen/arch/x86/acpi/cpufreq/powernow.c
@@ -49,9 +49,6 @@
#define MSR_PSTATE_CTRL 0xc0010062 /* Pstate control MSR */
#define MSR_PSTATE_CUR_LIMIT 0xc0010061 /* pstate current limit MSR */
-extern struct processor_pminfo processor_pminfo[NR_CPUS];
-extern struct cpufreq_policy xen_px_policy[NR_CPUS];
-
struct powernow_cpufreq_data {
struct processor_performance *acpi_data;
struct cpufreq_frequency_table *freq_table;
@@ -149,7 +146,7 @@ static int powernow_cpufreq_cpu_init(str
drv_data[cpu] = data;
- data->acpi_data = &processor_pminfo[cpu].perf;
+ data->acpi_data = &processor_pminfo[cpu]->perf;
perf = data->acpi_data;
policy->shared_type = perf->shared_type;
@@ -271,8 +268,8 @@ int powernow_cpufreq_init(void)
}
if (ret)
return ret;
- if (max_dom < processor_pminfo[i].perf.domain_info.domain)
- max_dom = processor_pminfo[i].perf.domain_info.domain;
+ if (max_dom < processor_pminfo[i]->perf.domain_info.domain)
+ max_dom = processor_pminfo[i]->perf.domain_info.domain;
}
max_dom++;
@@ -288,13 +285,13 @@ int powernow_cpufreq_init(void)
/* get cpumask of each psd domain */
for_each_online_cpu(i) {
- __set_bit(processor_pminfo[i].perf.domain_info.domain, dom_mask);
- cpu_set(i, pt[processor_pminfo[i].perf.domain_info.domain]);
+ __set_bit(processor_pminfo[i]->perf.domain_info.domain, dom_mask);
+ cpu_set(i, pt[processor_pminfo[i]->perf.domain_info.domain]);
}
for_each_online_cpu(i)
- processor_pminfo[i].perf.shared_cpu_map =
- pt[processor_pminfo[i].perf.domain_info.domain];
+ processor_pminfo[i]->perf.shared_cpu_map =
+ pt[processor_pminfo[i]->perf.domain_info.domain];
cpufreq_driver = &powernow_cpufreq_driver;
Index: xen-3.3.1-testing/xen/drivers/cpufreq/utility.c
===================================================================
--- xen-3.3.1-testing.orig/xen/drivers/cpufreq/utility.c
+++ xen-3.3.1-testing/xen/xen/drivers/cpufreq/utility.c
@@ -45,10 +45,12 @@ void px_statistic_suspend(void)
now = NOW();
for_each_online_cpu(cpu) {
- struct pm_px *pxpt = &px_statistic_data[cpu];
+ struct pm_px *pxpt = px_statistic_data[cpu];
uint64_t total_idle_ns;
uint64_t tmp_idle_ns;
+ if ( !pxpt || !pxpt->u.pt )
+ continue;
total_idle_ns = get_cpu_idle_time(cpu);
tmp_idle_ns = total_idle_ns - pxpt->prev_idle_wall;
@@ -66,7 +68,10 @@ void px_statistic_resume(void)
now = NOW();
for_each_online_cpu(cpu) {
- struct pm_px *pxpt = &px_statistic_data[cpu];
+ struct pm_px *pxpt = px_statistic_data[cpu];
+
+ if ( !pxpt )
+ continue;
pxpt->prev_state_wall = now;
pxpt->prev_idle_wall = get_cpu_idle_time(cpu);
}
@@ -80,11 +85,14 @@ void px_statistic_update(cpumask_t cpuma
now = NOW();
for_each_cpu_mask(i, cpumask) {
- struct pm_px *pxpt = &px_statistic_data[i];
- uint32_t statnum = processor_pminfo[i].perf.state_count;
+ struct pm_px *pxpt = px_statistic_data[i];
+ struct processor_pminfo *pmpt = processor_pminfo[i];
uint64_t total_idle_ns;
uint64_t tmp_idle_ns;
+ if ( !pxpt || !pxpt->u.pt || !pxpt->u.trans_pt || !pmpt )
+ continue;
+
total_idle_ns = get_cpu_idle_time(i);
tmp_idle_ns = total_idle_ns - pxpt->prev_idle_wall;
@@ -94,7 +102,7 @@ void px_statistic_update(cpumask_t cpuma
pxpt->u.pt[from].residency += now - pxpt->prev_state_wall;
pxpt->u.pt[from].residency -= tmp_idle_ns;
- (*(pxpt->u.trans_pt + from*statnum + to))++;
+ (*(pxpt->u.trans_pt + from * pmpt->perf.state_count + to))++;
pxpt->prev_state_wall = now;
pxpt->prev_idle_wall = total_idle_ns;
@@ -104,11 +112,23 @@ void px_statistic_update(cpumask_t cpuma
int px_statistic_init(int cpuid)
{
uint32_t i, count;
- struct pm_px *pxpt = &px_statistic_data[cpuid];
- struct processor_pminfo *pmpt = &processor_pminfo[cpuid];
+ struct pm_px *pxpt = px_statistic_data[cpuid];
+ const struct processor_pminfo *pmpt = processor_pminfo[cpuid];
+
+ if ( !pmpt )
+ return -EINVAL;
count = pmpt->perf.state_count;
+ if ( !pxpt )
+ {
+ pxpt = xmalloc(struct pm_px);
+ if ( !pxpt )
+ return -ENOMEM;
+ memset(pxpt, 0, sizeof(*pxpt));
+ px_statistic_data[cpuid] = pxpt;
+ }
+
pxpt->u.trans_pt = xmalloc_array(uint64_t, count * count);
if (!pxpt->u.trans_pt)
return -ENOMEM;
@@ -137,9 +157,13 @@ int px_statistic_init(int cpuid)
void px_statistic_reset(int cpuid)
{
uint32_t i, j, count;
- struct pm_px *pxpt = &px_statistic_data[cpuid];
+ struct pm_px *pxpt = px_statistic_data[cpuid];
+ const struct processor_pminfo *pmpt = processor_pminfo[cpuid];
- count = processor_pminfo[cpuid].perf.state_count;
+ if ( !pxpt || !pxpt->u.pt || !pxpt->u.trans_pt || !pmpt )
+ return;
+
+ count = pmpt->perf.state_count;
for (i=0; i < count; i++) {
pxpt->u.pt[i].residency = 0;
@@ -298,9 +322,9 @@ void cpufreq_suspend(void)
/* to protect the case when Px was not controlled by xen */
for_each_online_cpu(cpu) {
- struct processor_performance *perf = &processor_pminfo[cpu].perf;
+ const struct processor_pminfo *pmpt = processor_pminfo[cpu];
- if (!(perf->init & XEN_PX_INIT))
+ if (!pmpt || !(pmpt->perf.init & XEN_PX_INIT))
return;
}
@@ -318,10 +342,11 @@ int cpufreq_resume(void)
/* 1. to protect the case when Px was not controlled by xen */
/* 2. set state and resume flag to sync cpu to right state and freq */
for_each_online_cpu(cpu) {
- struct processor_performance *perf = &processor_pminfo[cpu].perf;
+ struct processor_pminfo *pmpt = processor_pminfo[cpu];
+ struct processor_performance *perf = &pmpt->perf;
struct cpufreq_policy *policy = &xen_px_policy[cpu];
- if (!(perf->init & XEN_PX_INIT))
+ if (!pmpt || !(perf->init & XEN_PX_INIT))
goto err;
perf->state = 0;
policy->resume = 1;
Index: xen-3.3.1-testing/xen/arch/x86/acpi/cpu_idle.c
===================================================================
--- xen-3.3.1-testing.orig/xen/arch/x86/acpi/cpu_idle.c
+++ xen-3.3.1-testing/xen/arch/x86/acpi/cpu_idle.c
@@ -128,7 +128,7 @@ struct acpi_processor_power
struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER];
};
-static struct acpi_processor_power processor_powers[NR_CPUS];
+static struct acpi_processor_power *__read_mostly processor_powers[NR_CPUS];
static void print_acpi_power(uint32_t cpu, struct acpi_processor_power *power)
{
@@ -162,8 +162,11 @@ static void print_acpi_power(uint32_t cp
static void dump_cx(unsigned char key)
{
- for( int i = 0; i < num_online_cpus(); i++ )
- print_acpi_power(i, &processor_powers[i]);
+ unsigned int cpu;
+
+ for_each_online_cpu ( cpu )
+ if (processor_powers[cpu])
+ print_acpi_power(cpu, processor_powers[cpu]);
}
static int __init cpu_idle_key_init(void)
@@ -272,14 +275,12 @@ static struct {
static void acpi_processor_idle(void)
{
- struct acpi_processor_power *power = NULL;
+ struct acpi_processor_power *power = processor_powers[smp_processor_id()];
struct acpi_processor_cx *cx = NULL;
struct acpi_processor_cx *next_state = NULL;
int sleep_ticks = 0;
u32 t1, t2 = 0;
- power = &processor_powers[smp_processor_id()];
-
/*
* Interrupts must be disabled during bus mastering calculations and
* for C2/C3 transitions.
@@ -292,7 +293,7 @@ static void acpi_processor_idle(void)
return;
}
- cx = power->state;
+ cx = power ? power->state : NULL;
if ( !cx )
{
if ( pm_idle_save )
@@ -947,7 +948,15 @@ long set_cx_pminfo(uint32_t cpu, struct
return -EFAULT;
}
- acpi_power = &processor_powers[cpu_id];
+ acpi_power = processor_powers[cpu_id];
+ if ( !acpi_power )
+ {
+ acpi_power = xmalloc(struct acpi_processor_power);
+ if ( !acpi_power )
+ return -ENOMEM;
+ memset(acpi_power, 0, sizeof(*acpi_power));
+ processor_powers[cpu_id] = acpi_power;
+ }
init_cx_pminfo(acpi_power);
@@ -983,18 +992,25 @@ long set_cx_pminfo(uint32_t cpu, struct
uint32_t pmstat_get_cx_nr(uint32_t cpuid)
{
- return processor_powers[cpuid].count;
+ return processor_powers[cpuid] ? processor_powers[cpuid]->count : 0;
}
int pmstat_get_cx_stat(uint32_t cpuid, struct pm_cx_stat *stat)
{
- struct acpi_processor_power *power = &processor_powers[cpuid];
+ const struct acpi_processor_power *power = processor_powers[cpuid];
struct vcpu *v = idle_vcpu[cpuid];
uint64_t usage;
int i;
+ if ( unlikely(!power) )
+ {
+ stat->last = 0;
+ stat->nr = 0;
+ stat->idle_time = 0;
+ return 0;
+ }
stat->last = (power->state) ? power->state->type : 0;
- stat->nr = processor_powers[cpuid].count;
+ stat->nr = power->count;
stat->idle_time = v->runstate.time[RUNSTATE_running];
if ( v->is_running )
stat->idle_time += NOW() - v->runstate.state_entry_time;
Index: xen-3.3.1-testing/xen/drivers/acpi/pmstat.c
===================================================================
--- xen-3.3.1-testing.orig/xen/drivers/acpi/pmstat.c
+++ xen-3.3.1-testing/xen/drivers/acpi/pmstat.c
@@ -41,7 +41,7 @@
#include <public/sysctl.h>
#include <acpi/cpufreq/cpufreq.h>
-struct pm_px px_statistic_data[NR_CPUS];
+struct pm_px *__read_mostly px_statistic_data[NR_CPUS];
extern uint32_t pmstat_get_cx_nr(uint32_t cpuid);
extern int pmstat_get_cx_stat(uint32_t cpuid, struct pm_cx_stat *stat);
@@ -55,7 +55,7 @@ int do_get_pm_info(struct xen_sysctl_get
if ( !op || (op->cpuid >= NR_CPUS) || !cpu_online(op->cpuid) )
return -EINVAL;
- pmpt = &processor_pminfo[op->cpuid];
+ pmpt = processor_pminfo[op->cpuid];
switch ( op->type & PMSTAT_CATEGORY_MASK )
{
@@ -86,7 +86,7 @@ int do_get_pm_info(struct xen_sysctl_get
uint64_t now, ct;
uint64_t total_idle_ns;
uint64_t tmp_idle_ns;
- struct pm_px *pxpt = &px_statistic_data[op->cpuid];
+ struct pm_px *pxpt = px_statistic_data[op->cpuid];
if ( !pxpt || !pxpt->u.pt || !pxpt->u.trans_pt )
return -ENODATA;
Index: xen-3.3.1-testing/xen/arch/x86/platform_hypercall.c
===================================================================
--- xen-3.3.1-testing.orig/xen/arch/x86/platform_hypercall.c
+++ xen-3.3.1-testing/xen/arch/x86/platform_hypercall.c
@@ -364,8 +364,19 @@ ret_t do_platform_op(XEN_GUEST_HANDLE(xe
ret = -EINVAL;
break;
}
- pmpt = &processor_pminfo[cpuid];
- pxpt = &processor_pminfo[cpuid].perf;
+ pmpt = processor_pminfo[cpuid];
+ if ( !pmpt )
+ {
+ pmpt = xmalloc(struct processor_pminfo);
+ if ( !pmpt )
+ {
+ ret = -ENOMEM;
+ break;
+ }
+ memset(pmpt, 0, sizeof(*pmpt));
+ processor_pminfo[cpuid] = pmpt;
+ }
+ pxpt = &pmpt->perf;
pmpt->acpi_id = xenpmpt->id;
pmpt->id = cpuid;
Index: xen-3.3.1-testing/xen/include/acpi/cpufreq/processor_perf.h
===================================================================
--- xen-3.3.1-testing.orig/xen/include/acpi/cpufreq/processor_perf.h
+++ xen-3.3.1-testing/xen/include/acpi/cpufreq/processor_perf.h
@@ -44,7 +44,7 @@ struct processor_pminfo {
struct processor_performance perf;
};
-extern struct processor_pminfo processor_pminfo[NR_CPUS];
+extern struct processor_pminfo *processor_pminfo[NR_CPUS];
struct px_stat {
uint8_t total; /* total Px states */
@@ -61,6 +61,6 @@ struct pm_px {
uint64_t prev_idle_wall;
};
-extern struct pm_px px_statistic_data[NR_CPUS];
+extern struct pm_px *px_statistic_data[NR_CPUS];
#endif /* __XEN_PROCESSOR_PM_H__ */
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