diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/powerpc/kernel/stacktrace.c')
-rw-r--r-- | ANDROID_3.4.5/arch/powerpc/kernel/stacktrace.c | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/kernel/stacktrace.c b/ANDROID_3.4.5/arch/powerpc/kernel/stacktrace.c deleted file mode 100644 index 3d30ef10..00000000 --- a/ANDROID_3.4.5/arch/powerpc/kernel/stacktrace.c +++ /dev/null @@ -1,63 +0,0 @@ -/* - * Stack trace utility - * - * Copyright 2008 Christoph Hellwig, IBM Corp. - * - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/export.h> -#include <linux/sched.h> -#include <linux/stacktrace.h> -#include <asm/ptrace.h> -#include <asm/processor.h> - -/* - * Save stack-backtrace addresses into a stack_trace buffer. - */ -static void save_context_stack(struct stack_trace *trace, unsigned long sp, - struct task_struct *tsk, int savesched) -{ - for (;;) { - unsigned long *stack = (unsigned long *) sp; - unsigned long newsp, ip; - - if (!validate_sp(sp, tsk, STACK_FRAME_OVERHEAD)) - return; - - newsp = stack[0]; - ip = stack[STACK_FRAME_LR_SAVE]; - - if (savesched || !in_sched_functions(ip)) { - if (!trace->skip) - trace->entries[trace->nr_entries++] = ip; - else - trace->skip--; - } - - if (trace->nr_entries >= trace->max_entries) - return; - - sp = newsp; - } -} - -void save_stack_trace(struct stack_trace *trace) -{ - unsigned long sp; - - asm("mr %0,1" : "=r" (sp)); - - save_context_stack(trace, sp, current, 1); -} -EXPORT_SYMBOL_GPL(save_stack_trace); - -void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace) -{ - save_context_stack(trace, tsk->thread.ksp, tsk, 0); -} -EXPORT_SYMBOL_GPL(save_stack_trace_tsk); |