Commit c8f573ec authored by Sven Schnelle's avatar Sven Schnelle Committed by Vasily Gorbik
Browse files

s390/ptrace: add last_break member to pt_regs 



Instead of using args[0] for the value of the last breaking event
address register, add a member to make things more obvious.

Signed-off-by: default avatarSven Schnelle <svens@linux.ibm.com>
Reviewed-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent ada1da31

arch/s390/include/asm/ptrace.h

+1 −0
Original line number Diff line number Diff line
@@ -96,6 +96,7 @@ struct pt_regs { 
	};

	unsigned long flags;

	unsigned long cr1;

	unsigned long last_break;

};



/*

arch/s390/kernel/dumpstack.c

+1 −1
Original line number Diff line number Diff line
@@ -152,7 +152,7 @@ void show_stack(struct task_struct *task, unsigned long *stack, 
static void show_last_breaking_event(struct pt_regs *regs)

{

	printk("Last Breaking-Event-Address:\n");

	printk(" [<%016lx>] %pSR\n", regs->args[0], (void *)regs->args[0]);

	printk(" [<%016lx>] %pSR\n", regs->last_break, (void *)regs->last_break);

}



void show_registers(struct pt_regs *regs)

arch/s390/kernel/traps.c

+1 −1
Original line number Diff line number Diff line
@@ -314,7 +314,7 @@ void noinstr __do_pgm_check(struct pt_regs *regs) 
		if (last_break < 4096)

			last_break = 1;

		current->thread.last_break = last_break;

		regs->args[0] = last_break;

		regs->last_break = last_break;

	}



	if (S390_lowcore.pgm_code & 0x0200) {