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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 00:20:36 +0200 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 00:20:36 +0200 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/um/kernel/sysrq.c | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/um/kernel/sysrq.c')
-rw-r--r-- | arch/um/kernel/sysrq.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/arch/um/kernel/sysrq.c b/arch/um/kernel/sysrq.c new file mode 100644 index 000000000000..e630438f9e73 --- /dev/null +++ b/arch/um/kernel/sysrq.c @@ -0,0 +1,81 @@ +/* + * Copyright (C) 2001 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#include "linux/sched.h" +#include "linux/kernel.h" +#include "linux/module.h" +#include "linux/kallsyms.h" +#include "asm/page.h" +#include "asm/processor.h" +#include "sysrq.h" +#include "user_util.h" + +void show_trace(unsigned long * stack) +{ + /* XXX: Copy the CONFIG_FRAME_POINTER stack-walking backtrace from + * arch/i386/kernel/traps.c, and then move this to sys-i386/sysrq.c.*/ + unsigned long addr; + + if (!stack) { + stack = (unsigned long*) &stack; + WARN_ON(1); + } + + printk("Call Trace: \n"); + while (((long) stack & (THREAD_SIZE-1)) != 0) { + addr = *stack; + if (__kernel_text_address(addr)) { + printk("%08lx: [<%08lx>]", (unsigned long) stack, addr); + print_symbol(" %s", addr); + printk("\n"); + } + stack++; + } + printk("\n"); +} + +/* + * stack dumps generator - this is used by arch-independent code. + * And this is identical to i386 currently. + */ +void dump_stack(void) +{ + unsigned long stack; + + show_trace(&stack); +} +EXPORT_SYMBOL(dump_stack); + +/*Stolen from arch/i386/kernel/traps.c */ +static int kstack_depth_to_print = 24; + +/* This recently started being used in arch-independent code too, as in + * kernel/sched.c.*/ +void show_stack(struct task_struct *task, unsigned long *esp) +{ + unsigned long *stack; + int i; + + if (esp == NULL) { + if (task != current) { + esp = (unsigned long *) KSTK_ESP(task); + /* Which one? No actual difference - just coding style.*/ + //esp = (unsigned long *) PT_REGS_IP(&task->thread.regs); + } else { + esp = (unsigned long *) &esp; + } + } + + stack = esp; + for(i = 0; i < kstack_depth_to_print; i++) { + if (kstack_end(stack)) + break; + if (i && ((i % 8) == 0)) + printk("\n "); + printk("%08lx ", *stack++); + } + + show_trace(esp); +} |