Commit 08edb968 authored by Vasily Gorbik's avatar Vasily Gorbik Committed by Heiko Carstens
Browse files

s390/unwind: add machine check handler stack 



Fixes: b61b1595 ("s390: add stack for machine check handler")
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
parent 7a2f9144

arch/s390/include/asm/stacktrace.h

+1 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ enum stack_type { 
	STACK_TYPE_IRQ,

	STACK_TYPE_NODAT,

	STACK_TYPE_RESTART,

	STACK_TYPE_MCCK,

};



struct stack_info {

arch/s390/kernel/dumpstack.c

+11 −1
Original line number Diff line number Diff line
@@ -79,6 +79,15 @@ static bool in_nodat_stack(unsigned long sp, struct stack_info *info) 
	return in_stack(sp, info, STACK_TYPE_NODAT, top - THREAD_SIZE, top);

}



static bool in_mcck_stack(unsigned long sp, struct stack_info *info)

{

	unsigned long frame_size, top;



	frame_size = STACK_FRAME_OVERHEAD + sizeof(struct pt_regs);

	top = S390_lowcore.mcck_stack + frame_size;

	return in_stack(sp, info, STACK_TYPE_MCCK, top - THREAD_SIZE, top);

}



static bool in_restart_stack(unsigned long sp, struct stack_info *info)

{

	unsigned long frame_size, top;
@@ -108,7 +117,8 @@ int get_stack_info(unsigned long sp, struct task_struct *task, 
	/* Check per-cpu stacks */

	if (!in_irq_stack(sp, info) &&

	    !in_nodat_stack(sp, info) &&

	    !in_restart_stack(sp, info))

	    !in_restart_stack(sp, info) &&

	    !in_mcck_stack(sp, info))

		goto unknown;



recursion_check: