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x86/mce: Convert static array of pointers to per-cpu variables

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When I previously fixed up the mce_device code, I used a static array of
the pointers.  It was (rightfully) pointed out to me that I should be
using the per_cpu code instead.

This patch converts the code over to that structure, moving the variable
back into the per_cpu area, like it used to be for 3.2 and earlier.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Link: https://lkml.org/lkml/2012/1/27/165
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Greg Kroah-Hartman 2012-01-26 15:49:14 -08:00 committed by Tony Luck
parent b01543dfe6
commit d6126ef5f3
3 changed files with 10 additions and 9 deletions
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2
arch/x86/include/asm/mce.h
View File

@ -151,7 +151,7 @@ static inline void enable_p5_mce(void) {}
void mce_setup(struct mce *m);
void mce_log(struct mce *m);
extern struct device *mce_device[CONFIG_NR_CPUS];
DECLARE_PER_CPU(struct device *, mce_device);
/*
* Maximum banks number.

8
arch/x86/kernel/cpu/mcheck/mce.c
View File

@ -1859,7 +1859,7 @@ static struct bus_type mce_subsys = {
.dev_name = "machinecheck",
};
struct device *mce_device[CONFIG_NR_CPUS];
DEFINE_PER_CPU(struct device *, mce_device);
__cpuinitdata
void (*threshold_cpu_callback)(unsigned long action, unsigned int cpu);
@ -2038,7 +2038,7 @@ static __cpuinit int mce_device_create(unsigned int cpu)
goto error2;
}
cpumask_set_cpu(cpu, mce_device_initialized);
mce_device[cpu] = dev;
per_cpu(mce_device, cpu) = dev;
return 0;
error2:
@ -2055,7 +2055,7 @@ error:
static __cpuinit void mce_device_remove(unsigned int cpu)
{
struct device *dev = mce_device[cpu];
struct device *dev = per_cpu(mce_device, cpu);
int i;
if (!cpumask_test_cpu(cpu, mce_device_initialized))
@ -2069,7 +2069,7 @@ static __cpuinit void mce_device_remove(unsigned int cpu)
device_unregister(dev);
cpumask_clear_cpu(cpu, mce_device_initialized);
mce_device[cpu] = NULL;
per_cpu(mce_device, cpu) = NULL;
}
/* Make sure there are no machine checks on offlined CPUs. */

9
arch/x86/kernel/cpu/mcheck/mce_amd.c
View File

@ -523,7 +523,7 @@ static __cpuinit int threshold_create_bank(unsigned int cpu, unsigned int bank)
{
int i, err = 0;
struct threshold_bank *b = NULL;
struct device *dev = mce_device[cpu];
struct device *dev = per_cpu(mce_device, cpu);
char name[32];
sprintf(name, "threshold_bank%i", bank);
@ -585,7 +585,7 @@ static __cpuinit int threshold_create_bank(unsigned int cpu, unsigned int bank)
if (i == cpu)
continue;
dev = mce_device[i];
dev = per_cpu(mce_device, i);
if (dev)
err = sysfs_create_link(&dev->kobj,b->kobj, name);
if (err)
@ -665,7 +665,8 @@ static void threshold_remove_bank(unsigned int cpu, int bank)
#ifdef CONFIG_SMP
/* sibling symlink */
if (shared_bank[bank] && b->blocks->cpu != cpu) {
sysfs_remove_link(&mce_device[cpu]->kobj, name);
dev = per_cpu(mce_device, cpu);
sysfs_remove_link(&dev->kobj, name);
per_cpu(threshold_banks, cpu)[bank] = NULL;
return;
@ -677,7 +678,7 @@ static void threshold_remove_bank(unsigned int cpu, int bank)
if (i == cpu)
continue;
dev = mce_device[i];
dev = per_cpu(mce_device, i);
if (dev)
sysfs_remove_link(&dev->kobj, name);
per_cpu(threshold_banks, i)[bank] = NULL;