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dumptrace: x86: consistently include loglevel, print stack switch

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- i386 and x86_64: always printk the 'data' parameter
 - i386: announce stack switch (irq -> normal)
 - i386: check if there is a stack switch before announcing it

There is a warning that 'context' might come out corrupt in early
boot. If this is true it should be fixed, not worked around.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Alexander van Heukelum 2008-10-04 23:12:43 +02:00 committed by Ingo Molnar
parent 3a18512db0
commit 2ac53721f3
2 changed files with 13 additions and 13 deletions
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17
arch/x86/kernel/dumpstack_32.c
View file

@ -104,16 +104,12 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
context = (struct thread_info *)
((unsigned long)stack & (~(THREAD_SIZE - 1)));
bp = print_context_stack(context, stack, bp, ops, data, NULL);
/*
* Should be after the line below, but somewhere
* in early boot context comes out corrupted and we
* can't reference it:
*/
if (ops->stack(data, "IRQ") < 0)
break;
stack = (unsigned long *)context->previous_esp;
if (!stack)
break;
if (ops->stack(data, "IRQ") < 0)
break;
touch_nmi_watchdog();
}
}
@ -134,6 +130,7 @@ static void print_trace_warning(void *data, char *msg)
static int print_trace_stack(void *data, char *name)
{
printk("%s <%s> ", (char *)data, name);
return 0;
}
@ -142,11 +139,9 @@ static int print_trace_stack(void *data, char *name)
*/
static void print_trace_address(void *data, unsigned long addr, int reliable)
{
printk("%s [<%08lx>] ", (char *)data, addr);
if (!reliable)
printk("? ");
print_symbol("%s\n", addr);
touch_nmi_watchdog();
printk(data);
printk_address(addr, reliable);
}
static const struct stacktrace_ops print_trace_ops = {

9
arch/x86/kernel/dumpstack_64.c
View file

@ -247,24 +247,29 @@ EXPORT_SYMBOL(dump_trace);
static void
print_trace_warning_symbol(void *data, char *msg, unsigned long symbol)
{
printk(data);
print_symbol(msg, symbol);
printk("\n");
}
static void print_trace_warning(void *data, char *msg)
{
printk("%s\n", msg);
printk("%s%s\n", (char *)data, msg);
}
static int print_trace_stack(void *data, char *name)
{
printk(" <%s> ", name);
printk("%s <%s> ", (char *)data, name);
return 0;
}
/*
* Print one address/symbol entries per line.
*/
static void print_trace_address(void *data, unsigned long addr, int reliable)
{
touch_nmi_watchdog();
printk(data);
printk_address(addr, reliable);
}