]>
git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - arch/um/kernel/sysrq.c
34ae555c3e700a8022df1910b6a1cbf7fdab84d0
2 * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
3 * Copyright (C) 2013 Richard Weinberger <richrd@nod.at>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
10 #include <linux/kallsyms.h>
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/sched.h>
14 #include <linux/sched/debug.h>
16 #include <asm/sysrq.h>
17 #include <asm/stacktrace.h>
20 static void _print_addr(void *data
, unsigned long address
, int reliable
)
22 pr_info(" [<%08lx>]", address
);
23 pr_cont(" %s", reliable
? "" : "? ");
24 print_symbol("%s", address
);
28 static const struct stacktrace_ops stackops
= {
29 .address
= _print_addr
32 void show_stack(struct task_struct
*task
, unsigned long *stack
)
34 unsigned long *sp
= stack
;
35 struct pt_regs
*segv_regs
= current
->thread
.segv_regs
;
38 if (!segv_regs
&& os_is_signal_stack()) {
39 pr_err("Received SIGSEGV in SIGSEGV handler,"
40 " aborting stack trace!\n");
45 sp
= get_stack_pointer(task
, segv_regs
);
49 for (i
= 0; i
< 3 * STACKSLOTS_PER_LINE
; i
++) {
50 if (kstack_end(stack
))
52 if (i
&& ((i
% STACKSLOTS_PER_LINE
) == 0))
54 pr_cont(" %08lx", *stack
++);
58 pr_info("Call Trace:\n");
59 dump_trace(current
, &stackops
, NULL
);