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x86: convert cpuinfo_x86 array to a per_cpu array

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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 <[email protected]>
Acked-by: Christoph Lameter <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: James Bottomley <[email protected]>
Cc: Dmitry Torokhov <[email protected]>
Cc: "Antonino A. Daplas" <[email protected]>
Cc: Mark M. Hoffman <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
This commit is contained in:
Mike Travis 2007-10-19 20:35:04 +02:00 • committed by Thomas Gleixner
commit 92cb7612ae
39 changed files with 148 additions and 128 deletions
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6
drivers/hwmon/coretemp.c
View file

@ -150,7 +150,7 @@ static struct coretemp_data *coretemp_update_device(struct device *dev)
static int __devinit coretemp_probe(struct platform_device *pdev)
{
struct coretemp_data *data;
struct cpuinfo_x86 *c = &(cpu_data)[pdev->id];
struct cpuinfo_x86 *c = &cpu_data(pdev->id);
int err;
u32 eax, edx;
@ -359,7 +359,7 @@ static int __init coretemp_init(void)
struct pdev_entry *p, *n;
/* quick check if we run Intel */
if (cpu_data[0].x86_vendor != X86_VENDOR_INTEL)
if (cpu_data(0).x86_vendor != X86_VENDOR_INTEL)
goto exit;
err = platform_driver_register(&coretemp_driver);
@ -367,7 +367,7 @@ static int __init coretemp_init(void)
goto exit;
for_each_online_cpu(i) {
struct cpuinfo_x86 *c = &(cpu_data)[i];
struct cpuinfo_x86 *c = &cpu_data(i);
/* check if family 6, models e, f, 16 */
if ((c->cpuid_level < 0) || (c->x86 != 0x6) ||

2
drivers/hwmon/hwmon-vid.c
View file

@ -200,7 +200,7 @@ static u8 find_vrm(u8 eff_family, u8 eff_model, u8 eff_stepping, u8 vendor)
u8 vid_which_vrm(void)
{
struct cpuinfo_x86 *c = cpu_data;
struct cpuinfo_x86 *c = &cpu_data(0);
u32 eax;
u8 eff_family, eff_model, eff_stepping, vrm_ret;