Commit 7aa89746 authored by Chuck Ebbert's avatar Chuck Ebbert Committed by Linus Torvalds

[PATCH] i386: fix stack dump loglevel

Recent changes caused part of stack traces from SysRq-T to print at
KERN_EMERG loglevel.  Also, parts of stack dump during oops were failing to
print at that level when they should.
Signed-off-by: default avatarChuck Ebbert <[email protected]>
Signed-off-by: default avatarAndrew Morton <[email protected]>
Signed-off-by: default avatarLinus Torvalds <[email protected]>
parent ce63ad78
......@@ -112,33 +112,38 @@ static inline int valid_stack_ptr(struct thread_info *tinfo, void *p)
p < (void *)tinfo + THREAD_SIZE - 3;
}
static void print_addr_and_symbol(unsigned long addr, char *log_lvl)
{
printk(log_lvl);
printk(" [<%08lx>] ", addr);
print_symbol("%s", addr);
printk("\n");
}
static inline unsigned long print_context_stack(struct thread_info *tinfo,
unsigned long *stack, unsigned long ebp)
unsigned long *stack, unsigned long ebp,
char *log_lvl)
{
unsigned long addr;
#ifdef CONFIG_FRAME_POINTER
while (valid_stack_ptr(tinfo, (void *)ebp)) {
addr = *(unsigned long *)(ebp + 4);
printk(KERN_EMERG " [<%08lx>] ", addr);
print_symbol("%s", addr);
printk("\n");
print_addr_and_symbol(addr, log_lvl);
ebp = *(unsigned long *)ebp;
}
#else
while (valid_stack_ptr(tinfo, stack)) {
addr = *stack++;
if (__kernel_text_address(addr)) {
printk(KERN_EMERG " [<%08lx>]", addr);
print_symbol(" %s", addr);
printk("\n");
}
if (__kernel_text_address(addr))
print_addr_and_symbol(addr, log_lvl);
}
#endif
return ebp;
}
void show_trace(struct task_struct *task, unsigned long * stack)
static void show_trace_log_lvl(struct task_struct *task,
unsigned long *stack, char *log_lvl)
{
unsigned long ebp;
......@@ -157,7 +162,7 @@ void show_trace(struct task_struct *task, unsigned long * stack)
struct thread_info *context;
context = (struct thread_info *)
((unsigned long)stack & (~(THREAD_SIZE - 1)));
ebp = print_context_stack(context, stack, ebp);
ebp = print_context_stack(context, stack, ebp, log_lvl);
stack = (unsigned long*)context->previous_esp;
if (!stack)
break;
......@@ -165,7 +170,13 @@ void show_trace(struct task_struct *task, unsigned long * stack)
}
}
void show_stack(struct task_struct *task, unsigned long *esp)
void show_trace(struct task_struct *task, unsigned long * stack)
{
show_trace_log_lvl(task, stack, "");
}
static void show_stack_log_lvl(struct task_struct *task, unsigned long *esp,
char *log_lvl)
{
unsigned long *stack;
int i;
......@@ -178,16 +189,26 @@ void show_stack(struct task_struct *task, unsigned long *esp)
}
stack = esp;
printk(KERN_EMERG);
printk(log_lvl);
for(i = 0; i < kstack_depth_to_print; i++) {
if (kstack_end(stack))
break;
if (i && ((i % 8) == 0))
printk("\n" KERN_EMERG " ");
if (i && ((i % 8) == 0)) {
printk("\n");
printk(log_lvl);
printk(" ");
}
printk("%08lx ", *stack++);
}
printk("\n" KERN_EMERG "Call Trace:\n");
show_trace(task, esp);
printk("\n");
printk(log_lvl);
printk("Call Trace:\n");
show_trace_log_lvl(task, esp, log_lvl);
}
void show_stack(struct task_struct *task, unsigned long *esp)
{
show_stack_log_lvl(task, esp, "");
}
/*
......@@ -238,7 +259,7 @@ void show_registers(struct pt_regs *regs)
u8 __user *eip;
printk("\n" KERN_EMERG "Stack: ");
show_stack(NULL, (unsigned long*)esp);
show_stack_log_lvl(NULL, (unsigned long *)esp, KERN_EMERG);
printk(KERN_EMERG "Code: ");
......
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