x86: avoid avoid passing around 'thread_info' in stack dumping code

[cascardo/linux.git] / arch / x86 / kernel / dumpstack_64.c

diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c
index 5f1c626..d558a8a 100644 (file)
--- a/arch/x86/kernel/dumpstack_64.c
+++ b/arch/x86/kernel/dumpstack_64.c
@@ -153,7 +153,6 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
                const struct stacktrace_ops *ops, void *data)
 {
        const unsigned cpu = get_cpu();
-       struct thread_info *tinfo;
        unsigned long *irq_stack = (unsigned long *)per_cpu(irq_stack_ptr, cpu);
        unsigned long dummy;
        unsigned used = 0;
@@ -179,7 +178,6 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
         * current stack address. If the stacks consist of nested
         * exceptions
         */
-       tinfo = task_thread_info(task);
        while (!done) {
                unsigned long *stack_end;
                enum stack_type stype;
@@ -202,7 +200,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
                        if (ops->stack(data, id) < 0)
                                break;
 
-                       bp = ops->walk_stack(tinfo, stack, bp, ops,
+                       bp = ops->walk_stack(task, stack, bp, ops,
                                             data, stack_end, &graph);
                        ops->stack(data, "<EOE>");
                        /*
@@ -218,7 +216,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
 
                        if (ops->stack(data, "IRQ") < 0)
                                break;
-                       bp = ops->walk_stack(tinfo, stack, bp,
+                       bp = ops->walk_stack(task, stack, bp,
                                     ops, data, stack_end, &graph);
                        /*
                         * We link to the next stack (which would be
@@ -240,7 +238,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
        /*
         * This handles the process stack:
         */
-       bp = ops->walk_stack(tinfo, stack, bp, ops, data, NULL, &graph);
+       bp = ops->walk_stack(task, stack, bp, ops, data, NULL, &graph);
        put_cpu();
 }
 EXPORT_SYMBOL(dump_trace);