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-rw-r--r--arch/x86/include/asm/nmi.h66
1 files changed, 66 insertions, 0 deletions
diff --git a/arch/x86/include/asm/nmi.h b/arch/x86/include/asm/nmi.h
new file mode 100644
index 000000000..5c5f1e56c
--- /dev/null
+++ b/arch/x86/include/asm/nmi.h
@@ -0,0 +1,66 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_X86_NMI_H
+#define _ASM_X86_NMI_H
+
+#include <linux/irq_work.h>
+#include <linux/pm.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+
+#ifdef CONFIG_X86_LOCAL_APIC
+
+extern int reserve_perfctr_nmi(unsigned int);
+extern void release_perfctr_nmi(unsigned int);
+extern int reserve_evntsel_nmi(unsigned int);
+extern void release_evntsel_nmi(unsigned int);
+
+struct ctl_table;
+extern int proc_nmi_enabled(struct ctl_table *, int ,
+ void __user *, size_t *, loff_t *);
+extern int unknown_nmi_panic;
+
+#endif /* CONFIG_X86_LOCAL_APIC */
+
+#define NMI_FLAG_FIRST 1
+
+enum {
+ NMI_LOCAL=0,
+ NMI_UNKNOWN,
+ NMI_SERR,
+ NMI_IO_CHECK,
+ NMI_MAX
+};
+
+#define NMI_DONE 0
+#define NMI_HANDLED 1
+
+typedef int (*nmi_handler_t)(unsigned int, struct pt_regs *);
+
+struct nmiaction {
+ struct list_head list;
+ nmi_handler_t handler;
+ u64 max_duration;
+ unsigned long flags;
+ const char *name;
+};
+
+#define register_nmi_handler(t, fn, fg, n, init...) \
+({ \
+ static struct nmiaction init fn##_na = { \
+ .list = LIST_HEAD_INIT(fn##_na.list), \
+ .handler = (fn), \
+ .name = (n), \
+ .flags = (fg), \
+ }; \
+ __register_nmi_handler((t), &fn##_na); \
+})
+
+int __register_nmi_handler(unsigned int, struct nmiaction *);
+
+void unregister_nmi_handler(unsigned int, const char *);
+
+void stop_nmi(void);
+void restart_nmi(void);
+void local_touch_nmi(void);
+
+#endif /* _ASM_X86_NMI_H */