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author | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-22 19:54:53 (GMT) |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-22 20:01:40 (GMT) |
commit | ae19ffbadc1b2100285a5b5b3d0a4e0a11390904 (patch) | |
tree | 3c2086ab67398a019089a47ca3f362a4bc6db74f /arch/x86/kernel/cpu/mcheck/non-fatal.c | |
parent | 34e84f39a27d059a3e6ec6e8b94aafa702e6f220 (diff) | |
parent | 9173a8ef24a6b1b8031507b35b8ffe5f85a87692 (diff) | |
download | linux-fsl-qoriq-ae19ffbadc1b2100285a5b5b3d0a4e0a11390904.tar.xz |
Merge branch 'master' into for-linus
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 f5f2d6f..0000000 --- a/arch/x86/kernel/cpu/mcheck/non-fatal.c +++ /dev/null @@ -1,94 +0,0 @@ -/* - * Non Fatal Machine Check Exception Reporting - * - * (C) Copyright 2002 Dave Jones. <davej@redhat.com> - * - * This file contains routines to check for non-fatal MCEs every 15s - * - */ -#include <linux/interrupt.h> -#include <linux/workqueue.h> -#include <linux/jiffies.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/types.h> -#include <linux/init.h> -#include <linux/smp.h> - -#include <asm/processor.h> -#include <asm/system.h> -#include <asm/mce.h> -#include <asm/msr.h> - -static int firstbank; - -#define MCE_RATE (15*HZ) /* timer rate is 15s */ - -static void mce_checkregs(void *info) -{ - u32 low, high; - int i; - - for (i = firstbank; i < nr_mce_banks; i++) { - rdmsr(MSR_IA32_MC0_STATUS+i*4, low, high); - - if (!(high & (1<<31))) - continue; - - printk(KERN_INFO "MCE: The hardware reports a non fatal, " - "correctable incident occurred on CPU %d.\n", - smp_processor_id()); - - printk(KERN_INFO "Bank %d: %08x%08x\n", i, high, low); - - /* - * Scrub the error so we don't pick it up in MCE_RATE - * seconds time: - */ - wrmsr(MSR_IA32_MC0_STATUS+i*4, 0UL, 0UL); - - /* Serialize: */ - wmb(); - add_taint(TAINT_MACHINE_CHECK); - } -} - -static void mce_work_fn(struct work_struct *work); -static DECLARE_DELAYED_WORK(mce_work, mce_work_fn); - -static void mce_work_fn(struct work_struct *work) -{ - on_each_cpu(mce_checkregs, NULL, 1); - schedule_delayed_work(&mce_work, round_jiffies_relative(MCE_RATE)); -} - -static int __init init_nonfatal_mce_checker(void) -{ - struct cpuinfo_x86 *c = &boot_cpu_data; - - /* Check for MCE support */ - if (!cpu_has(c, X86_FEATURE_MCE)) - return -ENODEV; - - /* Check for PPro style MCA */ - if (!cpu_has(c, X86_FEATURE_MCA)) - return -ENODEV; - - /* Some Athlons misbehave when we frob bank 0 */ - if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD && - boot_cpu_data.x86 == 6) - firstbank = 1; - else - firstbank = 0; - - /* - * Check for non-fatal errors every MCE_RATE s - */ - schedule_delayed_work(&mce_work, round_jiffies_relative(MCE_RATE)); - printk(KERN_INFO "Machine check exception polling timer started.\n"); - - return 0; -} -module_init(init_nonfatal_mce_checker); - -MODULE_LICENSE("GPL"); |