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/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);