diff options
Diffstat (limited to 'arch/x86/kernel/cpu/mcheck/non-fatal.c')
-rw-r--r-- | arch/x86/kernel/cpu/mcheck/non-fatal.c | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/arch/x86/kernel/cpu/mcheck/non-fatal.c b/arch/x86/kernel/cpu/mcheck/non-fatal.c deleted file mode 100644 index f5f2d6f71fb6..000000000000 --- a/arch/x86/kernel/cpu/mcheck/non-fatal.c +++ /dev/null | |||
@@ -1,94 +0,0 @@ | |||
1 | /* | ||
2 | * Non Fatal Machine Check Exception Reporting | ||
3 | * | ||
4 | * (C) Copyright 2002 Dave Jones. <davej@redhat.com> | ||
5 | * | ||
6 | * This file contains routines to check for non-fatal MCEs every 15s | ||
7 | * | ||
8 | */ | ||
9 | #include <linux/interrupt.h> | ||
10 | #include <linux/workqueue.h> | ||
11 | #include <linux/jiffies.h> | ||
12 | #include <linux/kernel.h> | ||
13 | #include <linux/module.h> | ||
14 | #include <linux/types.h> | ||
15 | #include <linux/init.h> | ||
16 | #include <linux/smp.h> | ||
17 | |||
18 | #include <asm/processor.h> | ||
19 | #include <asm/system.h> | ||
20 | #include <asm/mce.h> | ||
21 | #include <asm/msr.h> | ||
22 | |||
23 | static int firstbank; | ||
24 | |||
25 | #define MCE_RATE (15*HZ) /* timer rate is 15s */ | ||
26 | |||
27 | static void mce_checkregs(void *info) | ||
28 | { | ||
29 | u32 low, high; | ||
30 | int i; | ||
31 | |||
32 | for (i = firstbank; i < nr_mce_banks; i++) { | ||
33 | rdmsr(MSR_IA32_MC0_STATUS+i*4, low, high); | ||
34 | |||
35 | if (!(high & (1<<31))) | ||
36 | continue; | ||
37 | |||
38 | printk(KERN_INFO "MCE: The hardware reports a non fatal, " | ||
39 | "correctable incident occurred on CPU %d.\n", | ||
40 | smp_processor_id()); | ||
41 | |||
42 | printk(KERN_INFO "Bank %d: %08x%08x\n", i, high, low); | ||
43 | |||
44 | /* | ||
45 | * Scrub the error so we don't pick it up in MCE_RATE | ||
46 | * seconds time: | ||
47 | */ | ||
48 | wrmsr(MSR_IA32_MC0_STATUS+i*4, 0UL, 0UL); | ||
49 | |||
50 | /* Serialize: */ | ||
51 | wmb(); | ||
52 | add_taint(TAINT_MACHINE_CHECK); | ||
53 | } | ||
54 | } | ||
55 | |||
56 | static void mce_work_fn(struct work_struct *work); | ||
57 | static DECLARE_DELAYED_WORK(mce_work, mce_work_fn); | ||
58 | |||
59 | static void mce_work_fn(struct work_struct *work) | ||
60 | { | ||
61 | on_each_cpu(mce_checkregs, NULL, 1); | ||
62 | schedule_delayed_work(&mce_work, round_jiffies_relative(MCE_RATE)); | ||
63 | } | ||
64 | |||
65 | static int __init init_nonfatal_mce_checker(void) | ||
66 | { | ||
67 | struct cpuinfo_x86 *c = &boot_cpu_data; | ||
68 | |||
69 | /* Check for MCE support */ | ||
70 | if (!cpu_has(c, X86_FEATURE_MCE)) | ||
71 | return -ENODEV; | ||
72 | |||
73 | /* Check for PPro style MCA */ | ||
74 | if (!cpu_has(c, X86_FEATURE_MCA)) | ||
75 | return -ENODEV; | ||
76 | |||
77 | /* Some Athlons misbehave when we frob bank 0 */ | ||
78 | if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD && | ||
79 | boot_cpu_data.x86 == 6) | ||
80 | firstbank = 1; | ||
81 | else | ||
82 | firstbank = 0; | ||
83 | |||
84 | /* | ||
85 | * Check for non-fatal errors every MCE_RATE s | ||
86 | */ | ||
87 | schedule_delayed_work(&mce_work, round_jiffies_relative(MCE_RATE)); | ||
88 | printk(KERN_INFO "Machine check exception polling timer started.\n"); | ||
89 | |||
90 | return 0; | ||
91 | } | ||
92 | module_init(init_nonfatal_mce_checker); | ||
93 | |||
94 | MODULE_LICENSE("GPL"); | ||