AuxXxilium/linux_dsm_epyc7002
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Merge branch 'x86/mce' into x86/urgent

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Merge reason: Leftover mini-topic from the merge window - merge it.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2009-12-15 20:33:51 +01:00
commit bf08b3b1a1
1 changed files with 12 additions and 10 deletions
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22
arch/x86/kernel/cpu/mcheck/mce-inject.c
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@ -74,7 +74,7 @@ static void raise_exception(struct mce *m, struct pt_regs *pregs)
m->finished = 0;
}
static cpumask_t mce_inject_cpumask;
static cpumask_var_t mce_inject_cpumask;
static int mce_raise_notify(struct notifier_block *self,
unsigned long val, void *data)
@ -82,9 +82,9 @@ static int mce_raise_notify(struct notifier_block *self,
struct die_args *args = (struct die_args *)data;
int cpu = smp_processor_id();
struct mce *m = &__get_cpu_var(injectm);
if (val != DIE_NMI_IPI || !cpu_isset(cpu, mce_inject_cpumask))
if (val != DIE_NMI_IPI || !cpumask_test_cpu(cpu, mce_inject_cpumask))
return NOTIFY_DONE;
cpu_clear(cpu, mce_inject_cpumask);
cpumask_clear_cpu(cpu, mce_inject_cpumask);
if (m->inject_flags & MCJ_EXCEPTION)
raise_exception(m, args->regs);
else if (m->status)
@ -148,22 +148,22 @@ static void raise_mce(struct mce *m)
unsigned long start;
int cpu;
get_online_cpus();
mce_inject_cpumask = cpu_online_map;
cpu_clear(get_cpu(), mce_inject_cpumask);
cpumask_copy(mce_inject_cpumask, cpu_online_mask);
cpumask_clear_cpu(get_cpu(), mce_inject_cpumask);
for_each_online_cpu(cpu) {
struct mce *mcpu = &per_cpu(injectm, cpu);
if (!mcpu->finished ||
MCJ_CTX(mcpu->inject_flags) != MCJ_CTX_RANDOM)
cpu_clear(cpu, mce_inject_cpumask);
cpumask_clear_cpu(cpu, mce_inject_cpumask);
}
if (!cpus_empty(mce_inject_cpumask))
apic->send_IPI_mask(&mce_inject_cpumask, NMI_VECTOR);
if (!cpumask_empty(mce_inject_cpumask))
apic->send_IPI_mask(mce_inject_cpumask, NMI_VECTOR);
start = jiffies;
while (!cpus_empty(mce_inject_cpumask)) {
while (!cpumask_empty(mce_inject_cpumask)) {
if (!time_before(jiffies, start + 2*HZ)) {
printk(KERN_ERR
"Timeout waiting for mce inject NMI %lx\n",
*cpus_addr(mce_inject_cpumask));
*cpumask_bits(mce_inject_cpumask));
break;
}
cpu_relax();
@ -210,6 +210,8 @@ static ssize_t mce_write(struct file *filp, const char __user *ubuf,
static int inject_init(void)
{
if (!alloc_cpumask_var(&mce_inject_cpumask, GFP_KERNEL))
return -ENOMEM;
printk(KERN_INFO "Machine check injector initialized\n");
mce_chrdev_ops.write = mce_write;
register_die_notifier(&mce_raise_nb);