Allow the board support code to register a raw notifier callback for
NMI, similar to what is done for CU2 exceptions.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2958/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Kevin Cernekee 2011-11-16 01:25:44 +00:00 коммит произвёл Ralf Baechle
Родитель 18a1eef92d
Коммит 34bd92e27b
2 изменённых файлов: 21 добавлений и 0 удалений

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@ -25,4 +25,16 @@ extern void (*board_nmi_handler_setup)(void);
extern void (*board_ejtag_handler_setup)(void);
extern void (*board_bind_eic_interrupt)(int irq, int regset);
extern int register_nmi_notifier(struct notifier_block *nb);
#define nmi_notifier(fn, pri) \
({ \
static struct notifier_block fn##_nb = { \
.notifier_call = fn, \
.priority = pri \
}; \
\
register_nmi_notifier(&fn##_nb); \
})
#endif /* _ASM_TRAPS_H */

Просмотреть файл

@ -1339,9 +1339,18 @@ void ejtag_exception_handler(struct pt_regs *regs)
/*
* NMI exception handler.
* No lock; only written during early bootup by CPU 0.
*/
static RAW_NOTIFIER_HEAD(nmi_chain);
int register_nmi_notifier(struct notifier_block *nb)
{
return raw_notifier_chain_register(&nmi_chain, nb);
}
NORET_TYPE void ATTRIB_NORET nmi_exception_handler(struct pt_regs *regs)
{
raw_notifier_call_chain(&nmi_chain, 0, regs);
bust_spinlocks(1);
printk("NMI taken!!!!\n");
die("NMI", regs);