linux/arch/sh/kernel/nmi_debug.c
Ingo Molnar b17b01533b sched/headers: Prepare for new header dependencies before moving code to <linux/sched/debug.h>
We are going to split <linux/sched/debug.h> out of <linux/sched.h>, which
will have to be picked up from other headers and a couple of .c files.

Create a trivial placeholder <linux/sched/debug.h> file that just
maps to <linux/sched.h> to make this patch obviously correct and
bisectable.

Include the new header in the files that are going to need it.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-02 08:42:34 +01:00

79 lines
1.6 KiB
C

/*
* Copyright (C) 2007 Atmel Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/delay.h>
#include <linux/kdebug.h>
#include <linux/notifier.h>
#include <linux/sched.h>
#include <linux/sched/debug.h>
#include <linux/hardirq.h>
enum nmi_action {
NMI_SHOW_STATE = 1 << 0,
NMI_SHOW_REGS = 1 << 1,
NMI_DIE = 1 << 2,
NMI_DEBOUNCE = 1 << 3,
};
static unsigned long nmi_actions;
static int nmi_debug_notify(struct notifier_block *self,
unsigned long val, void *data)
{
struct die_args *args = data;
if (likely(val != DIE_NMI))
return NOTIFY_DONE;
if (nmi_actions & NMI_SHOW_STATE)
show_state();
if (nmi_actions & NMI_SHOW_REGS)
show_regs(args->regs);
if (nmi_actions & NMI_DEBOUNCE)
mdelay(10);
if (nmi_actions & NMI_DIE)
return NOTIFY_BAD;
return NOTIFY_OK;
}
static struct notifier_block nmi_debug_nb = {
.notifier_call = nmi_debug_notify,
};
static int __init nmi_debug_setup(char *str)
{
char *p, *sep;
register_die_notifier(&nmi_debug_nb);
if (*str != '=')
return 0;
for (p = str + 1; *p; p = sep + 1) {
sep = strchr(p, ',');
if (sep)
*sep = 0;
if (strcmp(p, "state") == 0)
nmi_actions |= NMI_SHOW_STATE;
else if (strcmp(p, "regs") == 0)
nmi_actions |= NMI_SHOW_REGS;
else if (strcmp(p, "debounce") == 0)
nmi_actions |= NMI_DEBOUNCE;
else if (strcmp(p, "die") == 0)
nmi_actions |= NMI_DIE;
else
printk(KERN_WARNING "NMI: Unrecognized action `%s'\n",
p);
if (!sep)
break;
}
return 0;
}
__setup("nmi_debug", nmi_debug_setup);