x86: convert cpuinfo_x86 array to a per_cpu array
cpu_data is currently an array defined using NR_CPUS. This means that
we overallocate since we will rarely really use maximum configured cpus.
When NR_CPU count is raised to 4096 the size of cpu_data becomes
3,145,728 bytes.
These changes were adopted from the sparc64 (and ia64) code. An
additional field was added to cpuinfo_x86 to be a non-ambiguous cpu
index. This corresponds to the index into a cpumask_t as well as the
per_cpu index. It's used in various places like show_cpuinfo().
cpu_data is defined to be the boot_cpu_data structure for the NON-SMP
case.
Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Christoph Lameter <clameter@sgi.com>
Cc: Andi Kleen <ak@suse.de>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/kernel/acpi/cstate.c b/arch/x86/kernel/acpi/cstate.c
index 2d39f55..10b6717 100644
--- a/arch/x86/kernel/acpi/cstate.c
+++ b/arch/x86/kernel/acpi/cstate.c
@@ -29,7 +29,7 @@
void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
unsigned int cpu)
{
- struct cpuinfo_x86 *c = cpu_data + cpu;
+ struct cpuinfo_x86 *c = &cpu_data(cpu);
flags->bm_check = 0;
if (num_online_cpus() == 1)
@@ -72,7 +72,7 @@
struct acpi_processor_cx *cx, struct acpi_power_register *reg)
{
struct cstate_entry *percpu_entry;
- struct cpuinfo_x86 *c = cpu_data + cpu;
+ struct cpuinfo_x86 *c = &cpu_data(cpu);
cpumask_t saved_mask;
int retval;
diff --git a/arch/x86/kernel/acpi/processor.c b/arch/x86/kernel/acpi/processor.c
index b54fded..2ed0a4c 100644
--- a/arch/x86/kernel/acpi/processor.c
+++ b/arch/x86/kernel/acpi/processor.c
@@ -63,7 +63,7 @@
void arch_acpi_processor_init_pdc(struct acpi_processor *pr)
{
unsigned int cpu = pr->id;
- struct cpuinfo_x86 *c = cpu_data + cpu;
+ struct cpuinfo_x86 *c = &cpu_data(cpu);
pr->pdc = NULL;
if (c->x86_vendor == X86_VENDOR_INTEL)
diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index 3bd2688..d6405e0 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -357,14 +357,14 @@
if (smp) {
printk(KERN_INFO "SMP alternatives: switching to SMP code\n");
clear_bit(X86_FEATURE_UP, boot_cpu_data.x86_capability);
- clear_bit(X86_FEATURE_UP, cpu_data[0].x86_capability);
+ clear_bit(X86_FEATURE_UP, cpu_data(0).x86_capability);
list_for_each_entry(mod, &smp_alt_modules, next)
alternatives_smp_lock(mod->locks, mod->locks_end,
mod->text, mod->text_end);
} else {
printk(KERN_INFO "SMP alternatives: switching to UP code\n");
set_bit(X86_FEATURE_UP, boot_cpu_data.x86_capability);
- set_bit(X86_FEATURE_UP, cpu_data[0].x86_capability);
+ set_bit(X86_FEATURE_UP, cpu_data(0).x86_capability);
list_for_each_entry(mod, &smp_alt_modules, next)
alternatives_smp_unlock(mod->locks, mod->locks_end,
mod->text, mod->text_end);
@@ -432,7 +432,7 @@
if (1 == num_possible_cpus()) {
printk(KERN_INFO "SMP alternatives: switching to UP code\n");
set_bit(X86_FEATURE_UP, boot_cpu_data.x86_capability);
- set_bit(X86_FEATURE_UP, cpu_data[0].x86_capability);
+ set_bit(X86_FEATURE_UP, cpu_data(0).x86_capability);
alternatives_smp_unlock(__smp_locks, __smp_locks_end,
_text, _etext);
}
diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
index 2ca43ba..fea0af0 100644
--- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -77,7 +77,7 @@
static int check_est_cpu(unsigned int cpuid)
{
- struct cpuinfo_x86 *cpu = &cpu_data[cpuid];
+ struct cpuinfo_x86 *cpu = &cpu_data(cpuid);
if (cpu->x86_vendor != X86_VENDOR_INTEL ||
!cpu_has(cpu, X86_FEATURE_EST))
@@ -560,7 +560,7 @@
unsigned int cpu = policy->cpu;
struct acpi_cpufreq_data *data;
unsigned int result = 0;
- struct cpuinfo_x86 *c = &cpu_data[policy->cpu];
+ struct cpuinfo_x86 *c = &cpu_data(policy->cpu);
struct acpi_processor_performance *perf;
dprintk("acpi_cpufreq_cpu_init\n");
diff --git a/arch/x86/kernel/cpu/cpufreq/e_powersaver.c b/arch/x86/kernel/cpu/cpufreq/e_powersaver.c
index c11baaf..326a4c8 100644
--- a/arch/x86/kernel/cpu/cpufreq/e_powersaver.c
+++ b/arch/x86/kernel/cpu/cpufreq/e_powersaver.c
@@ -305,7 +305,7 @@
static int __init eps_init(void)
{
- struct cpuinfo_x86 *c = cpu_data;
+ struct cpuinfo_x86 *c = &cpu_data(0);
/* This driver will work only on Centaur C7 processors with
* Enhanced SpeedStep/PowerSaver registers */
diff --git a/arch/x86/kernel/cpu/cpufreq/elanfreq.c b/arch/x86/kernel/cpu/cpufreq/elanfreq.c
index 1e7ae7d..94619c2 100644
--- a/arch/x86/kernel/cpu/cpufreq/elanfreq.c
+++ b/arch/x86/kernel/cpu/cpufreq/elanfreq.c
@@ -199,7 +199,7 @@
static int elanfreq_cpu_init(struct cpufreq_policy *policy)
{
- struct cpuinfo_x86 *c = cpu_data;
+ struct cpuinfo_x86 *c = &cpu_data(0);
unsigned int i;
int result;
@@ -280,7 +280,7 @@
static int __init elanfreq_init(void)
{
- struct cpuinfo_x86 *c = cpu_data;
+ struct cpuinfo_x86 *c = &cpu_data(0);
/* Test if we have the right hardware */
if ((c->x86_vendor != X86_VENDOR_AMD) ||
diff --git a/arch/x86/kernel/cpu/cpufreq/longhaul.c b/arch/x86/kernel/cpu/cpufreq/longhaul.c
index 5045f5d..749d00c 100644
--- a/arch/x86/kernel/cpu/cpufreq/longhaul.c
+++ b/arch/x86/kernel/cpu/cpufreq/longhaul.c
@@ -780,7 +780,7 @@
static int __init longhaul_cpu_init(struct cpufreq_policy *policy)
{
- struct cpuinfo_x86 *c = cpu_data;
+ struct cpuinfo_x86 *c = &cpu_data(0);
char *cpuname=NULL;
int ret;
u32 lo, hi;
@@ -959,7 +959,7 @@
static int __init longhaul_init(void)
{
- struct cpuinfo_x86 *c = cpu_data;
+ struct cpuinfo_x86 *c = &cpu_data(0);
if (c->x86_vendor != X86_VENDOR_CENTAUR || c->x86 != 6)
return -ENODEV;
diff --git a/arch/x86/kernel/cpu/cpufreq/longrun.c b/arch/x86/kernel/cpu/cpufreq/longrun.c
index b268951..af4a867 100644
--- a/arch/x86/kernel/cpu/cpufreq/longrun.c
+++ b/arch/x86/kernel/cpu/cpufreq/longrun.c
@@ -172,7 +172,7 @@
u32 save_lo, save_hi;
u32 eax, ebx, ecx, edx;
u32 try_hi;
- struct cpuinfo_x86 *c = cpu_data;
+ struct cpuinfo_x86 *c = &cpu_data(0);
if (!low_freq || !high_freq)
return -EINVAL;
@@ -298,7 +298,7 @@
*/
static int __init longrun_init(void)
{
- struct cpuinfo_x86 *c = cpu_data;
+ struct cpuinfo_x86 *c = &cpu_data(0);
if (c->x86_vendor != X86_VENDOR_TRANSMETA ||
!cpu_has(c, X86_FEATURE_LONGRUN))
diff --git a/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c b/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
index 793eae8..14791ec 100644
--- a/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
+++ b/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
@@ -195,7 +195,7 @@
static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy)
{
- struct cpuinfo_x86 *c = &cpu_data[policy->cpu];
+ struct cpuinfo_x86 *c = &cpu_data(policy->cpu);
int cpuid = 0;
unsigned int i;
@@ -279,7 +279,7 @@
static int __init cpufreq_p4_init(void)
{
- struct cpuinfo_x86 *c = cpu_data;
+ struct cpuinfo_x86 *c = &cpu_data(0);
int ret;
/*
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k6.c b/arch/x86/kernel/cpu/cpufreq/powernow-k6.c
index 6d02853..42405b4 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k6.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k6.c
@@ -215,7 +215,7 @@
*/
static int __init powernow_k6_init(void)
{
- struct cpuinfo_x86 *c = cpu_data;
+ struct cpuinfo_x86 *c = &cpu_data(0);
if ((c->x86_vendor != X86_VENDOR_AMD) || (c->x86 != 5) ||
((c->x86_model != 12) && (c->x86_model != 13)))
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k7.c b/arch/x86/kernel/cpu/cpufreq/powernow-k7.c
index f3686a5..b5a9863 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k7.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k7.c
@@ -114,7 +114,7 @@
static int check_powernow(void)
{
- struct cpuinfo_x86 *c = cpu_data;
+ struct cpuinfo_x86 *c = &cpu_data(0);
unsigned int maxei, eax, ebx, ecx, edx;
if ((c->x86_vendor != X86_VENDOR_AMD) || (c->x86 !=6)) {
diff --git a/arch/x86/kernel/cpu/cpufreq/sc520_freq.c b/arch/x86/kernel/cpu/cpufreq/sc520_freq.c
index d9f3e90..42da9bd 100644
--- a/arch/x86/kernel/cpu/cpufreq/sc520_freq.c
+++ b/arch/x86/kernel/cpu/cpufreq/sc520_freq.c
@@ -102,7 +102,7 @@
static int sc520_freq_cpu_init(struct cpufreq_policy *policy)
{
- struct cpuinfo_x86 *c = cpu_data;
+ struct cpuinfo_x86 *c = &cpu_data(0);
int result;
/* capability check */
@@ -151,7 +151,7 @@
static int __init sc520_freq_init(void)
{
- struct cpuinfo_x86 *c = cpu_data;
+ struct cpuinfo_x86 *c = &cpu_data(0);
int err;
/* Test if we have the right hardware */
diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c b/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c
index 811d474..3031f11 100644
--- a/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c
+++ b/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c
@@ -230,7 +230,7 @@
static int centrino_cpu_init_table(struct cpufreq_policy *policy)
{
- struct cpuinfo_x86 *cpu = &cpu_data[policy->cpu];
+ struct cpuinfo_x86 *cpu = &cpu_data(policy->cpu);
struct cpu_model *model;
for(model = models; model->cpu_id != NULL; model++)
@@ -340,7 +340,7 @@
static int centrino_cpu_init(struct cpufreq_policy *policy)
{
- struct cpuinfo_x86 *cpu = &cpu_data[policy->cpu];
+ struct cpuinfo_x86 *cpu = &cpu_data(policy->cpu);
unsigned freq;
unsigned l, h;
int ret;
@@ -612,7 +612,7 @@
*/
static int __init centrino_init(void)
{
- struct cpuinfo_x86 *cpu = cpu_data;
+ struct cpuinfo_x86 *cpu = &cpu_data(0);
if (!cpu_has(cpu, X86_FEATURE_EST))
return -ENODEV;
diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c b/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
index b1acc8c..76c3ab0 100644
--- a/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
+++ b/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
@@ -228,7 +228,7 @@
unsigned int speedstep_detect_processor (void)
{
- struct cpuinfo_x86 *c = cpu_data;
+ struct cpuinfo_x86 *c = &cpu_data(0);
u32 ebx, msr_lo, msr_hi;
dprintk("x86: %x, model: %x\n", c->x86, c->x86_model);
diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c
index 35c7ebb..9921b01 100644
--- a/arch/x86/kernel/cpu/intel_cacheinfo.c
+++ b/arch/x86/kernel/cpu/intel_cacheinfo.c
@@ -295,7 +295,7 @@
unsigned int new_l2 = 0, new_l3 = 0, i; /* Cache sizes from cpuid(4) */
unsigned int l2_id = 0, l3_id = 0, num_threads_sharing, index_msb;
#ifdef CONFIG_X86_HT
- unsigned int cpu = (c == &boot_cpu_data) ? 0 : (c - cpu_data);
+ unsigned int cpu = c->cpu_index;
#endif
if (c->cpuid_level > 3) {
@@ -459,7 +459,7 @@
struct _cpuid4_info *this_leaf, *sibling_leaf;
unsigned long num_threads_sharing;
int index_msb, i;
- struct cpuinfo_x86 *c = cpu_data;
+ struct cpuinfo_x86 *c = &cpu_data(cpu);
this_leaf = CPUID4_INFO_IDX(cpu, index);
num_threads_sharing = 1 + this_leaf->eax.split.num_threads_sharing;
@@ -470,8 +470,8 @@
index_msb = get_count_order(num_threads_sharing);
for_each_online_cpu(i) {
- if (c[i].apicid >> index_msb ==
- c[cpu].apicid >> index_msb) {
+ if (cpu_data(i).apicid >> index_msb ==
+ c->apicid >> index_msb) {
cpu_set(i, this_leaf->shared_cpu_map);
if (i != cpu && cpuid4_info[i]) {
sibling_leaf = CPUID4_INFO_IDX(i, index);
diff --git a/arch/x86/kernel/cpu/proc.c b/arch/x86/kernel/cpu/proc.c
index 879a0f7..2d42b41 100644
--- a/arch/x86/kernel/cpu/proc.c
+++ b/arch/x86/kernel/cpu/proc.c
@@ -85,12 +85,13 @@
/* nothing */
};
struct cpuinfo_x86 *c = v;
- int i, n = c - cpu_data;
+ int i, n = 0;
int fpu_exception;
#ifdef CONFIG_SMP
if (!cpu_online(n))
return 0;
+ n = c->cpu_index;
#endif
seq_printf(m, "processor\t: %d\n"
"vendor_id\t: %s\n"
@@ -175,11 +176,15 @@
static void *c_start(struct seq_file *m, loff_t *pos)
{
- return *pos < NR_CPUS ? cpu_data + *pos : NULL;
+ if (*pos == 0) /* just in case, cpu 0 is not the first */
+ *pos = first_cpu(cpu_possible_map);
+ if ((*pos) < NR_CPUS && cpu_possible(*pos))
+ return &cpu_data(*pos);
+ return NULL;
}
static void *c_next(struct seq_file *m, void *v, loff_t *pos)
{
- ++*pos;
+ *pos = next_cpu(*pos, cpu_possible_map);
return c_start(m, pos);
}
static void c_stop(struct seq_file *m, void *v)
diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c
index 2086c72..05c9936 100644
--- a/arch/x86/kernel/cpuid.c
+++ b/arch/x86/kernel/cpuid.c
@@ -114,7 +114,7 @@
static int cpuid_open(struct inode *inode, struct file *file)
{
unsigned int cpu = iminor(file->f_path.dentry->d_inode);
- struct cpuinfo_x86 *c = &(cpu_data)[cpu];
+ struct cpuinfo_x86 *c = &cpu_data(cpu);
if (cpu >= NR_CPUS || !cpu_online(cpu))
return -ENXIO; /* No such CPU */
diff --git a/arch/x86/kernel/mce_64.c b/arch/x86/kernel/mce_64.c
index 66e6b79..2cf20de 100644
--- a/arch/x86/kernel/mce_64.c
+++ b/arch/x86/kernel/mce_64.c
@@ -799,7 +799,8 @@
{
int err;
int i;
- if (!mce_available(&cpu_data[cpu]))
+
+ if (!mce_available(&cpu_data(cpu)))
return -EIO;
memset(&per_cpu(device_mce, cpu).kobj, 0, sizeof(struct kobject));
diff --git a/arch/x86/kernel/mce_amd_64.c b/arch/x86/kernel/mce_amd_64.c
index 0d2afd9..752fb16a 100644
--- a/arch/x86/kernel/mce_amd_64.c
+++ b/arch/x86/kernel/mce_amd_64.c
@@ -472,11 +472,11 @@
sprintf(name, "threshold_bank%i", bank);
#ifdef CONFIG_SMP
- if (cpu_data[cpu].cpu_core_id && shared_bank[bank]) { /* symlink */
+ if (cpu_data(cpu).cpu_core_id && shared_bank[bank]) { /* symlink */
i = first_cpu(per_cpu(cpu_core_map, cpu));
/* first core not up yet */
- if (cpu_data[i].cpu_core_id)
+ if (cpu_data(i).cpu_core_id)
goto out;
/* already linked */
diff --git a/arch/x86/kernel/microcode.c b/arch/x86/kernel/microcode.c
index 09cf7811..09c3152 100644
--- a/arch/x86/kernel/microcode.c
+++ b/arch/x86/kernel/microcode.c
@@ -132,7 +132,7 @@
static void collect_cpu_info(int cpu_num)
{
- struct cpuinfo_x86 *c = cpu_data + cpu_num;
+ struct cpuinfo_x86 *c = &cpu_data(cpu_num);
struct ucode_cpu_info *uci = ucode_cpu_info + cpu_num;
unsigned int val[2];
@@ -522,7 +522,7 @@
static int cpu_request_microcode(int cpu)
{
char name[30];
- struct cpuinfo_x86 *c = cpu_data + cpu;
+ struct cpuinfo_x86 *c = &cpu_data(cpu);
const struct firmware *firmware;
void *buf;
unsigned long size;
@@ -570,7 +570,7 @@
static int apply_microcode_check_cpu(int cpu)
{
- struct cpuinfo_x86 *c = cpu_data + cpu;
+ struct cpuinfo_x86 *c = &cpu_data(cpu);
struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
cpumask_t old;
unsigned int val[2];
diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c
index e18e516..ee6eba4 100644
--- a/arch/x86/kernel/msr.c
+++ b/arch/x86/kernel/msr.c
@@ -112,7 +112,7 @@
static int msr_open(struct inode *inode, struct file *file)
{
unsigned int cpu = iminor(file->f_path.dentry->d_inode);
- struct cpuinfo_x86 *c = &(cpu_data)[cpu];
+ struct cpuinfo_x86 *c = &cpu_data(cpu);
if (cpu >= NR_CPUS || !cpu_online(cpu))
return -ENXIO; /* No such CPU */
diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c
index 94630c6..0f0d9d4 100644
--- a/arch/x86/kernel/setup_64.c
+++ b/arch/x86/kernel/setup_64.c
@@ -534,7 +534,7 @@
but in the same order as the HT nodeids.
If that doesn't result in a usable node fall back to the
path for the previous case. */
- int ht_nodeid = apicid - (cpu_data[0].phys_proc_id << bits);
+ int ht_nodeid = apicid - (cpu_data(0).phys_proc_id << bits);
if (ht_nodeid >= 0 &&
apicid_to_node[ht_nodeid] != NUMA_NO_NODE)
node = apicid_to_node[ht_nodeid];
@@ -858,6 +858,7 @@
#ifdef CONFIG_SMP
c->phys_proc_id = (cpuid_ebx(1) >> 24) & 0xff;
+ c->cpu_index = 0;
#endif
}
@@ -964,6 +965,7 @@
static int show_cpuinfo(struct seq_file *m, void *v)
{
struct cpuinfo_x86 *c = v;
+ int cpu = 0;
/*
* These flag bits must match the definitions in <asm/cpufeature.h>.
@@ -1042,8 +1044,9 @@
#ifdef CONFIG_SMP
- if (!cpu_online(c-cpu_data))
+ if (!cpu_online(c->cpu_index))
return 0;
+ cpu = c->cpu_index;
#endif
seq_printf(m,"processor\t: %u\n"
@@ -1051,7 +1054,7 @@
"cpu family\t: %d\n"
"model\t\t: %d\n"
"model name\t: %s\n",
- (unsigned)(c-cpu_data),
+ (unsigned)cpu,
c->x86_vendor_id[0] ? c->x86_vendor_id : "unknown",
c->x86,
(int)c->x86_model,
@@ -1063,7 +1066,7 @@
seq_printf(m, "stepping\t: unknown\n");
if (cpu_has(c,X86_FEATURE_TSC)) {
- unsigned int freq = cpufreq_quick_get((unsigned)(c-cpu_data));
+ unsigned int freq = cpufreq_quick_get((unsigned)cpu);
if (!freq)
freq = cpu_khz;
seq_printf(m, "cpu MHz\t\t: %u.%03u\n",
@@ -1076,7 +1079,6 @@
#ifdef CONFIG_SMP
if (smp_num_siblings * c->x86_max_cores > 1) {
- int cpu = c - cpu_data;
seq_printf(m, "physical id\t: %d\n", c->phys_proc_id);
seq_printf(m, "siblings\t: %d\n",
cpus_weight(per_cpu(cpu_core_map, cpu)));
@@ -1134,12 +1136,16 @@
static void *c_start(struct seq_file *m, loff_t *pos)
{
- return *pos < NR_CPUS ? cpu_data + *pos : NULL;
+ if (*pos == 0) /* just in case, cpu 0 is not the first */
+ *pos = first_cpu(cpu_possible_map);
+ if ((*pos) < NR_CPUS && cpu_possible(*pos))
+ return &cpu_data(*pos);
+ return NULL;
}
static void *c_next(struct seq_file *m, void *v, loff_t *pos)
{
- ++*pos;
+ *pos = next_cpu(*pos, cpu_possible_map);
return c_start(m, pos);
}
diff --git a/arch/x86/kernel/smp_32.c b/arch/x86/kernel/smp_32.c
index 4974c3d..2621ca3 100644
--- a/arch/x86/kernel/smp_32.c
+++ b/arch/x86/kernel/smp_32.c
@@ -610,7 +610,7 @@
*/
cpu_clear(smp_processor_id(), cpu_online_map);
disable_local_APIC();
- if (cpu_data[smp_processor_id()].hlt_works_ok)
+ if (cpu_data(smp_processor_id()).hlt_works_ok)
for(;;) halt();
for (;;);
}
diff --git a/arch/x86/kernel/smpboot_32.c b/arch/x86/kernel/smpboot_32.c
index 47bccfc..7b8fdfa 100644
--- a/arch/x86/kernel/smpboot_32.c
+++ b/arch/x86/kernel/smpboot_32.c
@@ -89,8 +89,8 @@
static cpumask_t smp_commenced_mask;
/* Per CPU bogomips and other parameters */
-struct cpuinfo_x86 cpu_data[NR_CPUS] __cacheline_aligned;
-EXPORT_SYMBOL(cpu_data);
+DEFINE_PER_CPU_SHARED_ALIGNED(struct cpuinfo_x86, cpu_info);
+EXPORT_PER_CPU_SYMBOL(cpu_info);
/*
* The following static array is used during kernel startup
@@ -158,9 +158,10 @@
void __cpuinit smp_store_cpu_info(int id)
{
- struct cpuinfo_x86 *c = cpu_data + id;
+ struct cpuinfo_x86 *c = &cpu_data(id);
*c = boot_cpu_data;
+ c->cpu_index = id;
if (id!=0)
identify_secondary_cpu(c);
/*
@@ -302,7 +303,7 @@
/* maps the cpu to the sched domain representing multi-core */
cpumask_t cpu_coregroup_map(int cpu)
{
- struct cpuinfo_x86 *c = cpu_data + cpu;
+ struct cpuinfo_x86 *c = &cpu_data(cpu);
/*
* For perf, we return last level cache shared map.
* And for power savings, we return cpu_core_map
@@ -319,41 +320,41 @@
void __cpuinit set_cpu_sibling_map(int cpu)
{
int i;
- struct cpuinfo_x86 *c = cpu_data;
+ struct cpuinfo_x86 *c = &cpu_data(cpu);
cpu_set(cpu, cpu_sibling_setup_map);
if (smp_num_siblings > 1) {
for_each_cpu_mask(i, cpu_sibling_setup_map) {
- if (c[cpu].phys_proc_id == c[i].phys_proc_id &&
- c[cpu].cpu_core_id == c[i].cpu_core_id) {
+ if (c->phys_proc_id == cpu_data(i).phys_proc_id &&
+ c->cpu_core_id == cpu_data(i).cpu_core_id) {
cpu_set(i, per_cpu(cpu_sibling_map, cpu));
cpu_set(cpu, per_cpu(cpu_sibling_map, i));
cpu_set(i, per_cpu(cpu_core_map, cpu));
cpu_set(cpu, per_cpu(cpu_core_map, i));
- cpu_set(i, c[cpu].llc_shared_map);
- cpu_set(cpu, c[i].llc_shared_map);
+ cpu_set(i, c->llc_shared_map);
+ cpu_set(cpu, cpu_data(i).llc_shared_map);
}
}
} else {
cpu_set(cpu, per_cpu(cpu_sibling_map, cpu));
}
- cpu_set(cpu, c[cpu].llc_shared_map);
+ cpu_set(cpu, c->llc_shared_map);
if (current_cpu_data.x86_max_cores == 1) {
per_cpu(cpu_core_map, cpu) = per_cpu(cpu_sibling_map, cpu);
- c[cpu].booted_cores = 1;
+ c->booted_cores = 1;
return;
}
for_each_cpu_mask(i, cpu_sibling_setup_map) {
if (per_cpu(cpu_llc_id, cpu) != BAD_APICID &&
per_cpu(cpu_llc_id, cpu) == per_cpu(cpu_llc_id, i)) {
- cpu_set(i, c[cpu].llc_shared_map);
- cpu_set(cpu, c[i].llc_shared_map);
+ cpu_set(i, c->llc_shared_map);
+ cpu_set(cpu, cpu_data(i).llc_shared_map);
}
- if (c[cpu].phys_proc_id == c[i].phys_proc_id) {
+ if (c->phys_proc_id == cpu_data(i).phys_proc_id) {
cpu_set(i, per_cpu(cpu_core_map, cpu));
cpu_set(cpu, per_cpu(cpu_core_map, i));
/*
@@ -365,15 +366,15 @@
* the booted_cores for this new cpu
*/
if (first_cpu(per_cpu(cpu_sibling_map, i)) == i)
- c[cpu].booted_cores++;
+ c->booted_cores++;
/*
* increment the core count for all
* the other cpus in this package
*/
if (i != cpu)
- c[i].booted_cores++;
- } else if (i != cpu && !c[cpu].booted_cores)
- c[cpu].booted_cores = c[i].booted_cores;
+ cpu_data(i).booted_cores++;
+ } else if (i != cpu && !c->booted_cores)
+ c->booted_cores = cpu_data(i).booted_cores;
}
}
}
@@ -852,7 +853,7 @@
/* number CPUs logically, starting from 1 (BSP is 0) */
Dprintk("OK.\n");
printk("CPU%d: ", cpu);
- print_cpu_info(&cpu_data[cpu]);
+ print_cpu_info(&cpu_data(cpu));
Dprintk("CPU has booted.\n");
} else {
boot_error= 1;
@@ -969,7 +970,7 @@
*/
smp_store_cpu_info(0); /* Final full version of the data */
printk("CPU%d: ", 0);
- print_cpu_info(&cpu_data[0]);
+ print_cpu_info(&cpu_data(0));
boot_cpu_physical_apicid = GET_APIC_ID(apic_read(APIC_ID));
boot_cpu_logical_apicid = logical_smp_processor_id();
@@ -1092,7 +1093,7 @@
Dprintk("Before bogomips.\n");
for (cpu = 0; cpu < NR_CPUS; cpu++)
if (cpu_isset(cpu, cpu_callout_map))
- bogosum += cpu_data[cpu].loops_per_jiffy;
+ bogosum += cpu_data(cpu).loops_per_jiffy;
printk(KERN_INFO
"Total of %d processors activated (%lu.%02lu BogoMIPS).\n",
cpucount+1,
@@ -1162,7 +1163,7 @@
void remove_siblinginfo(int cpu)
{
int sibling;
- struct cpuinfo_x86 *c = cpu_data;
+ struct cpuinfo_x86 *c = &cpu_data(cpu);
for_each_cpu_mask(sibling, per_cpu(cpu_core_map, cpu)) {
cpu_clear(cpu, per_cpu(cpu_core_map, sibling));
@@ -1170,15 +1171,15 @@
* last thread sibling in this cpu core going down
*/
if (cpus_weight(per_cpu(cpu_sibling_map, cpu)) == 1)
- c[sibling].booted_cores--;
+ cpu_data(sibling).booted_cores--;
}
for_each_cpu_mask(sibling, per_cpu(cpu_sibling_map, cpu))
cpu_clear(cpu, per_cpu(cpu_sibling_map, sibling));
cpus_clear(per_cpu(cpu_sibling_map, cpu));
cpus_clear(per_cpu(cpu_core_map, cpu));
- c[cpu].phys_proc_id = 0;
- c[cpu].cpu_core_id = 0;
+ c->phys_proc_id = 0;
+ c->cpu_core_id = 0;
cpu_clear(cpu, cpu_sibling_setup_map);
}
diff --git a/arch/x86/kernel/smpboot_64.c b/arch/x86/kernel/smpboot_64.c
index 7c8f586..fd1fff6 100644
--- a/arch/x86/kernel/smpboot_64.c
+++ b/arch/x86/kernel/smpboot_64.c
@@ -84,8 +84,8 @@
EXPORT_SYMBOL(cpu_possible_map);
/* Per CPU bogomips and other parameters */
-struct cpuinfo_x86 cpu_data[NR_CPUS] __cacheline_aligned;
-EXPORT_SYMBOL(cpu_data);
+DEFINE_PER_CPU_SHARED_ALIGNED(struct cpuinfo_x86, cpu_info);
+EXPORT_PER_CPU_SYMBOL(cpu_info);
/* Set when the idlers are all forked */
int smp_threads_ready;
@@ -138,9 +138,10 @@
static void __cpuinit smp_store_cpu_info(int id)
{
- struct cpuinfo_x86 *c = cpu_data + id;
+ struct cpuinfo_x86 *c = &cpu_data(id);
*c = boot_cpu_data;
+ c->cpu_index = id;
identify_cpu(c);
print_cpu_info(c);
}
@@ -237,7 +238,7 @@
/* maps the cpu to the sched domain representing multi-core */
cpumask_t cpu_coregroup_map(int cpu)
{
- struct cpuinfo_x86 *c = cpu_data + cpu;
+ struct cpuinfo_x86 *c = &cpu_data(cpu);
/*
* For perf, we return last level cache shared map.
* And for power savings, we return cpu_core_map
@@ -254,41 +255,41 @@
static inline void set_cpu_sibling_map(int cpu)
{
int i;
- struct cpuinfo_x86 *c = cpu_data;
+ struct cpuinfo_x86 *c = &cpu_data(cpu);
cpu_set(cpu, cpu_sibling_setup_map);
if (smp_num_siblings > 1) {
for_each_cpu_mask(i, cpu_sibling_setup_map) {
- if (c[cpu].phys_proc_id == c[i].phys_proc_id &&
- c[cpu].cpu_core_id == c[i].cpu_core_id) {
+ if (c->phys_proc_id == cpu_data(i).phys_proc_id &&
+ c->cpu_core_id == cpu_data(i).cpu_core_id) {
cpu_set(i, per_cpu(cpu_sibling_map, cpu));
cpu_set(cpu, per_cpu(cpu_sibling_map, i));
cpu_set(i, per_cpu(cpu_core_map, cpu));
cpu_set(cpu, per_cpu(cpu_core_map, i));
- cpu_set(i, c[cpu].llc_shared_map);
- cpu_set(cpu, c[i].llc_shared_map);
+ cpu_set(i, c->llc_shared_map);
+ cpu_set(cpu, cpu_data(i).llc_shared_map);
}
}
} else {
cpu_set(cpu, per_cpu(cpu_sibling_map, cpu));
}
- cpu_set(cpu, c[cpu].llc_shared_map);
+ cpu_set(cpu, c->llc_shared_map);
if (current_cpu_data.x86_max_cores == 1) {
per_cpu(cpu_core_map, cpu) = per_cpu(cpu_sibling_map, cpu);
- c[cpu].booted_cores = 1;
+ c->booted_cores = 1;
return;
}
for_each_cpu_mask(i, cpu_sibling_setup_map) {
if (per_cpu(cpu_llc_id, cpu) != BAD_APICID &&
per_cpu(cpu_llc_id, cpu) == per_cpu(cpu_llc_id, i)) {
- cpu_set(i, c[cpu].llc_shared_map);
- cpu_set(cpu, c[i].llc_shared_map);
+ cpu_set(i, c->llc_shared_map);
+ cpu_set(cpu, cpu_data(i).llc_shared_map);
}
- if (c[cpu].phys_proc_id == c[i].phys_proc_id) {
+ if (c->phys_proc_id == cpu_data(i).phys_proc_id) {
cpu_set(i, per_cpu(cpu_core_map, cpu));
cpu_set(cpu, per_cpu(cpu_core_map, i));
/*
@@ -300,15 +301,15 @@
* the booted_cores for this new cpu
*/
if (first_cpu(per_cpu(cpu_sibling_map, i)) == i)
- c[cpu].booted_cores++;
+ c->booted_cores++;
/*
* increment the core count for all
* the other cpus in this package
*/
if (i != cpu)
- c[i].booted_cores++;
- } else if (i != cpu && !c[cpu].booted_cores)
- c[cpu].booted_cores = c[i].booted_cores;
+ cpu_data(i).booted_cores++;
+ } else if (i != cpu && !c->booted_cores)
+ c->booted_cores = cpu_data(i).booted_cores;
}
}
}
@@ -989,7 +990,7 @@
static void remove_siblinginfo(int cpu)
{
int sibling;
- struct cpuinfo_x86 *c = cpu_data;
+ struct cpuinfo_x86 *c = &cpu_data(cpu);
for_each_cpu_mask(sibling, per_cpu(cpu_core_map, cpu)) {
cpu_clear(cpu, per_cpu(cpu_core_map, sibling));
@@ -997,15 +998,15 @@
* last thread sibling in this cpu core going down
*/
if (cpus_weight(per_cpu(cpu_sibling_map, cpu)) == 1)
- c[sibling].booted_cores--;
+ cpu_data(sibling).booted_cores--;
}
for_each_cpu_mask(sibling, per_cpu(cpu_sibling_map, cpu))
cpu_clear(cpu, per_cpu(cpu_sibling_map, sibling));
cpus_clear(per_cpu(cpu_sibling_map, cpu));
cpus_clear(per_cpu(cpu_core_map, cpu));
- c[cpu].phys_proc_id = 0;
- c[cpu].cpu_core_id = 0;
+ c->phys_proc_id = 0;
+ c->cpu_core_id = 0;
cpu_clear(cpu, cpu_sibling_setup_map);
}
diff --git a/arch/x86/kernel/tsc_32.c b/arch/x86/kernel/tsc_32.c
index e87a393..b8a7cf6 100644
--- a/arch/x86/kernel/tsc_32.c
+++ b/arch/x86/kernel/tsc_32.c
@@ -181,8 +181,8 @@
if (cpu_has_tsc) {
cpu_khz = calculate_cpu_khz();
tsc_khz = cpu_khz;
- cpu_data[0].loops_per_jiffy =
- cpufreq_scale(cpu_data[0].loops_per_jiffy,
+ cpu_data(0).loops_per_jiffy =
+ cpufreq_scale(cpu_data(0).loops_per_jiffy,
cpu_khz_old, cpu_khz);
return 0;
} else
@@ -215,7 +215,7 @@
return 0;
}
ref_freq = freq->old;
- loops_per_jiffy_ref = cpu_data[freq->cpu].loops_per_jiffy;
+ loops_per_jiffy_ref = cpu_data(freq->cpu).loops_per_jiffy;
cpu_khz_ref = cpu_khz;
}
@@ -223,7 +223,7 @@
(val == CPUFREQ_POSTCHANGE && freq->old > freq->new) ||
(val == CPUFREQ_RESUMECHANGE)) {
if (!(freq->flags & CPUFREQ_CONST_LOOPS))
- cpu_data[freq->cpu].loops_per_jiffy =
+ cpu_data(freq->cpu).loops_per_jiffy =
cpufreq_scale(loops_per_jiffy_ref,
ref_freq, freq->new);
diff --git a/arch/x86/kernel/tsc_64.c b/arch/x86/kernel/tsc_64.c
index 9f22e54..9c70af4 100644
--- a/arch/x86/kernel/tsc_64.c
+++ b/arch/x86/kernel/tsc_64.c
@@ -73,13 +73,13 @@
struct cpufreq_freqs *freq = data;
unsigned long *lpj, dummy;
- if (cpu_has(&cpu_data[freq->cpu], X86_FEATURE_CONSTANT_TSC))
+ if (cpu_has(&cpu_data(freq->cpu), X86_FEATURE_CONSTANT_TSC))
return 0;
lpj = &dummy;
if (!(freq->flags & CPUFREQ_CONST_LOOPS))
#ifdef CONFIG_SMP
- lpj = &cpu_data[freq->cpu].loops_per_jiffy;
+ lpj = &cpu_data(freq->cpu).loops_per_jiffy;
#else
lpj = &boot_cpu_data.loops_per_jiffy;
#endif
diff --git a/arch/x86/kernel/vsyscall_64.c b/arch/x86/kernel/vsyscall_64.c
index 4a2c340..78f2250 100644
--- a/arch/x86/kernel/vsyscall_64.c
+++ b/arch/x86/kernel/vsyscall_64.c
@@ -291,7 +291,7 @@
#ifdef CONFIG_NUMA
node = cpu_to_node(cpu);
#endif
- if (cpu_has(&cpu_data[cpu], X86_FEATURE_RDTSCP))
+ if (cpu_has(&cpu_data(cpu), X86_FEATURE_RDTSCP))
write_rdtscp_aux((node << 12) | cpu);
/* Store cpu number in limit so that it can be loaded quickly
diff --git a/arch/x86/lib/delay_32.c b/arch/x86/lib/delay_32.c
index f6edb11..952e7a8 100644
--- a/arch/x86/lib/delay_32.c
+++ b/arch/x86/lib/delay_32.c
@@ -82,7 +82,7 @@
__asm__("mull %0"
:"=d" (xloops), "=&a" (d0)
:"1" (xloops), "0"
- (cpu_data[raw_smp_processor_id()].loops_per_jiffy * (HZ/4)));
+ (cpu_data(raw_smp_processor_id()).loops_per_jiffy * (HZ/4)));
__delay(++xloops);
}
diff --git a/arch/x86/lib/delay_64.c b/arch/x86/lib/delay_64.c
index 2dbebd3..0ebbfb9 100644
--- a/arch/x86/lib/delay_64.c
+++ b/arch/x86/lib/delay_64.c
@@ -40,7 +40,8 @@
inline void __const_udelay(unsigned long xloops)
{
- __delay(((xloops * HZ * cpu_data[raw_smp_processor_id()].loops_per_jiffy) >> 32) + 1);
+ __delay(((xloops * HZ *
+ cpu_data(raw_smp_processor_id()).loops_per_jiffy) >> 32) + 1);
}
EXPORT_SYMBOL(__const_udelay);
diff --git a/arch/x86/mach-voyager/voyager_smp.c b/arch/x86/mach-voyager/voyager_smp.c
index e4928aa..f93a730 100644
--- a/arch/x86/mach-voyager/voyager_smp.c
+++ b/arch/x86/mach-voyager/voyager_smp.c
@@ -36,8 +36,8 @@
/* per CPU data structure (for /proc/cpuinfo et al), visible externally
* indexed physically */
-struct cpuinfo_x86 cpu_data[NR_CPUS] __cacheline_aligned;
-EXPORT_SYMBOL(cpu_data);
+DEFINE_PER_CPU(cpuinfo_x86, cpu_info) __cacheline_aligned;
+EXPORT_PER_CPU_SYMBOL(cpu_info);
/* physical ID of the CPU used to boot the system */
unsigned char boot_cpu_id;
@@ -430,7 +430,7 @@
void __init
smp_store_cpu_info(int id)
{
- struct cpuinfo_x86 *c=&cpu_data[id];
+ struct cpuinfo_x86 *c = &cpu_data(id);
*c = boot_cpu_data;
@@ -634,7 +634,7 @@
cpu, smp_processor_id()));
printk("CPU%d: ", cpu);
- print_cpu_info(&cpu_data[cpu]);
+ print_cpu_info(&cpu_data(cpu));
wmb();
cpu_set(cpu, cpu_callout_map);
cpu_set(cpu, cpu_present_map);
@@ -683,7 +683,7 @@
*/
smp_store_cpu_info(boot_cpu_id);
printk("CPU%d: ", boot_cpu_id);
- print_cpu_info(&cpu_data[boot_cpu_id]);
+ print_cpu_info(&cpu_data(boot_cpu_id));
if(is_cpu_quad()) {
/* booting on a Quad CPU */
@@ -714,7 +714,7 @@
unsigned long bogosum = 0;
for (i = 0; i < NR_CPUS; i++)
if (cpu_isset(i, cpu_online_map))
- bogosum += cpu_data[i].loops_per_jiffy;
+ bogosum += cpu_data(i).loops_per_jiffy;
printk(KERN_INFO "Total of %d processors activated (%lu.%02lu BogoMIPS).\n",
cpucount+1,
bogosum/(500000/HZ),