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Diffstat (limited to 'arch/x86/kernel/dumpstack_32.c')
-rw-r--r--arch/x86/kernel/dumpstack_32.c56
1 files changed, 12 insertions, 44 deletions
diff --git a/arch/x86/kernel/dumpstack_32.c b/arch/x86/kernel/dumpstack_32.c
index 06eb322b5f9f..bb3b5b9a6899 100644
--- a/arch/x86/kernel/dumpstack_32.c
+++ b/arch/x86/kernel/dumpstack_32.c
@@ -16,18 +16,15 @@
#include <asm/stacktrace.h>
-void stack_type_str(enum stack_type type, const char **begin, const char **end)
+const char *stack_type_name(enum stack_type type)
{
- switch (type) {
- case STACK_TYPE_IRQ:
- case STACK_TYPE_SOFTIRQ:
- *begin = "IRQ";
- *end = "EOI";
- break;
- default:
- *begin = NULL;
- *end = NULL;
- }
+ if (type == STACK_TYPE_IRQ)
+ return "IRQ";
+
+ if (type == STACK_TYPE_SOFTIRQ)
+ return "SOFTIRQ";
+
+ return NULL;
}
static bool in_hardirq_stack(unsigned long *stack, struct stack_info *info)
@@ -109,8 +106,10 @@ recursion_check:
* just break out and report an unknown stack type.
*/
if (visit_mask) {
- if (*visit_mask & (1UL << info->type))
+ if (*visit_mask & (1UL << info->type)) {
+ printk_deferred_once(KERN_WARNING "WARNING: stack recursion on stack type %d\n", info->type);
goto unknown;
+ }
*visit_mask |= 1UL << info->type;
}
@@ -121,36 +120,6 @@ unknown:
return -EINVAL;
}
-void show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
- unsigned long *sp, char *log_lvl)
-{
- unsigned long *stack;
- int i;
-
- if (!try_get_task_stack(task))
- return;
-
- sp = sp ? : get_stack_pointer(task, regs);
-
- stack = sp;
- for (i = 0; i < kstack_depth_to_print; i++) {
- if (kstack_end(stack))
- break;
- if ((i % STACKSLOTS_PER_LINE) == 0) {
- if (i != 0)
- pr_cont("\n");
- printk("%s %08lx", log_lvl, *stack++);
- } else
- pr_cont(" %08lx", *stack++);
- touch_nmi_watchdog();
- }
- pr_cont("\n");
- show_trace_log_lvl(task, regs, sp, log_lvl);
-
- put_task_stack(task);
-}
-
-
void show_regs(struct pt_regs *regs)
{
int i;
@@ -168,8 +137,7 @@ void show_regs(struct pt_regs *regs)
unsigned char c;
u8 *ip;
- pr_emerg("Stack:\n");
- show_stack_log_lvl(current, regs, NULL, KERN_EMERG);
+ show_trace_log_lvl(current, regs, NULL, KERN_EMERG);
pr_emerg("Code:");