[patch 078/101] printk: when dumping regs, show the stack, not thread_info

[patch 078/101] printk: when dumping regs, show the stack, not thread_info

[akpm]

From: Andy Lutomirski <luto@kernel.org>
Subject: printk: when dumping regs, show the stack, not thread_info

We currently show:

  task: <current> ti: <current_thread_info()> task.ti: <task_thread_info(current)>"

"ti" and "task.ti" are redundant, and neither is actually what we
want to show, which the the base of the thread stack.  Change the
display to show the stack pointer explicitly.

Link: http://lkml.kernel.org/r/543ac5bd66ff94000a57a02e11af7239571a3055.1468523549.git.luto@kernel.org
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 kernel/printk/printk.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff -puN kernel/printk/printk.c~printk-when-dumping-regs-show-the-stack-not-thread_info kernel/printk/printk.c
--- a/kernel/printk/printk.c~printk-when-dumping-regs-show-the-stack-not-thread_info
+++ a/kernel/printk/printk.c
@@ -3177,9 +3177,8 @@ void show_regs_print_info(const char *lo
 {
 	dump_stack_print_info(log_lvl);
 
-	printk("%stask: %p ti: %p task.ti: %p\n",
-	       log_lvl, current, current_thread_info(),
-	       task_thread_info(current));
+	printk("%stask: %p task.stack: %p\n",
+	       log_lvl, current, task_stack_page(current));
 }
 
 #endif
_