dumpstack_64.c (dfdc5437bd62dd6a26961e27f26b671374749875) dumpstack_64.c (7ee991fbc6f947e9b04f29c9c6c1d057d0671a16)
1/*
2 * Copyright (C) 1991, 1992 Linus Torvalds
3 * Copyright (C) 2000, 2001, 2002 Andi Kleen, SuSE Labs
4 */
5#include <linux/kallsyms.h>
6#include <linux/kprobes.h>
7#include <linux/uaccess.h>
8#include <linux/utsname.h>

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104void dump_trace(struct task_struct *task, struct pt_regs *regs,
105 unsigned long *stack, unsigned long bp,
106 const struct stacktrace_ops *ops, void *data)
107{
108 const unsigned cpu = get_cpu();
109 unsigned long *irqstack_end = (unsigned long *)cpu_pda(cpu)->irqstackptr;
110 unsigned used = 0;
111 struct thread_info *tinfo;
1/*
2 * Copyright (C) 1991, 1992 Linus Torvalds
3 * Copyright (C) 2000, 2001, 2002 Andi Kleen, SuSE Labs
4 */
5#include <linux/kallsyms.h>
6#include <linux/kprobes.h>
7#include <linux/uaccess.h>
8#include <linux/utsname.h>

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104void dump_trace(struct task_struct *task, struct pt_regs *regs,
105 unsigned long *stack, unsigned long bp,
106 const struct stacktrace_ops *ops, void *data)
107{
108 const unsigned cpu = get_cpu();
109 unsigned long *irqstack_end = (unsigned long *)cpu_pda(cpu)->irqstackptr;
110 unsigned used = 0;
111 struct thread_info *tinfo;
112 int graph = 0;
112
113 if (!task)
114 task = current;
115
116 if (!stack) {
117 unsigned long dummy;
118 stack = &dummy;
119 if (task && task != current)

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144 estack_end = in_exception_stack(cpu, (unsigned long)stack,
145 &used, &id);
146
147 if (estack_end) {
148 if (ops->stack(data, id) < 0)
149 break;
150
151 bp = print_context_stack(tinfo, stack, bp, ops,
113
114 if (!task)
115 task = current;
116
117 if (!stack) {
118 unsigned long dummy;
119 stack = &dummy;
120 if (task && task != current)

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145 estack_end = in_exception_stack(cpu, (unsigned long)stack,
146 &used, &id);
147
148 if (estack_end) {
149 if (ops->stack(data, id) < 0)
150 break;
151
152 bp = print_context_stack(tinfo, stack, bp, ops,
152 data, estack_end);
153 data, estack_end, &graph);
153 ops->stack(data, "<EOE>");
154 /*
155 * We link to the next stack via the
156 * second-to-last pointer (index -2 to end) in the
157 * exception stack:
158 */
159 stack = (unsigned long *) estack_end[-2];
160 continue;
161 }
162 if (irqstack_end) {
163 unsigned long *irqstack;
164 irqstack = irqstack_end -
165 (IRQSTACKSIZE - 64) / sizeof(*irqstack);
166
167 if (stack >= irqstack && stack < irqstack_end) {
168 if (ops->stack(data, "IRQ") < 0)
169 break;
170 bp = print_context_stack(tinfo, stack, bp,
154 ops->stack(data, "<EOE>");
155 /*
156 * We link to the next stack via the
157 * second-to-last pointer (index -2 to end) in the
158 * exception stack:
159 */
160 stack = (unsigned long *) estack_end[-2];
161 continue;
162 }
163 if (irqstack_end) {
164 unsigned long *irqstack;
165 irqstack = irqstack_end -
166 (IRQSTACKSIZE - 64) / sizeof(*irqstack);
167
168 if (stack >= irqstack && stack < irqstack_end) {
169 if (ops->stack(data, "IRQ") < 0)
170 break;
171 bp = print_context_stack(tinfo, stack, bp,
171 ops, data, irqstack_end);
172 ops, data, irqstack_end, &graph);
172 /*
173 * We link to the next stack (which would be
174 * the process stack normally) the last
175 * pointer (index -1 to end) in the IRQ stack:
176 */
177 stack = (unsigned long *) (irqstack_end[-1]);
178 irqstack_end = NULL;
179 ops->stack(data, "EOI");
180 continue;
181 }
182 }
183 break;
184 }
185
186 /*
187 * This handles the process stack:
188 */
173 /*
174 * We link to the next stack (which would be
175 * the process stack normally) the last
176 * pointer (index -1 to end) in the IRQ stack:
177 */
178 stack = (unsigned long *) (irqstack_end[-1]);
179 irqstack_end = NULL;
180 ops->stack(data, "EOI");
181 continue;
182 }
183 }
184 break;
185 }
186
187 /*
188 * This handles the process stack:
189 */
189 bp = print_context_stack(tinfo, stack, bp, ops, data, NULL);
190 bp = print_context_stack(tinfo, stack, bp, ops, data, NULL, &graph);
190 put_cpu();
191}
192EXPORT_SYMBOL(dump_trace);
193
194void
195show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
196 unsigned long *sp, unsigned long bp, char *log_lvl)
197{

--- 100 unchanged lines hidden --- 		191 put_cpu();
192}
193EXPORT_SYMBOL(dump_trace);
194
195void
196show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
197 unsigned long *sp, unsigned long bp, char *log_lvl)
198{

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