e63b85a50b
- if profile --nmi kernel uses NMI watchdog based sampling based on Intel architecture performance counters - using NMI makes kernel profiling possible - watchdog kernel lockup detection is disabled while sampling as we may get unpredictable interrupts in kernel and thus possibly many false positives - if watchdog is not enabled at boot time, profiling enables it and turns it of again when done
29 lines
463 B
C
29 lines
463 B
C
#ifndef __I386_WATCHDOG_H__
|
|
#define __I386_WATCHDOG_H__
|
|
|
|
#include "kernel/kernel.h"
|
|
|
|
struct nmi_frame {
|
|
reg_t eax;
|
|
reg_t ecx;
|
|
reg_t edx;
|
|
reg_t ebx;
|
|
reg_t esp;
|
|
reg_t ebp;
|
|
reg_t esi;
|
|
reg_t edi;
|
|
u16_t gs;
|
|
u16_t fs;
|
|
u16_t es;
|
|
u16_t ds;
|
|
reg_t pc; /* arch independent name for program counter */
|
|
reg_t cs;
|
|
reg_t eflags;
|
|
};
|
|
|
|
_PROTOTYPE(int i386_watchdog_start, (void));
|
|
|
|
#define nmi_in_kernel(f) ((f)->cs == CS_SELECTOR)
|
|
|
|
#endif /* __I386_WATCHDOG_H__ */
|