[PATCH] printk levels for i386 oops code.

Especially useful when users have booted with 'quiet'.  In the regular 'oops'
path, we set the console_loglevel before we start spewing debug info, but we
can call the backtrace code from other places now too, such as the spinlock
debugging code.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c
index 53ad954e3ba489a5929871812f3a7bb3f7f1c5bf..b9f0030a2ebbc38494bfaee9ae47656672ac0336 100644 (file)
--- a/arch/i386/kernel/traps.c
+++ b/arch/i386/kernel/traps.c
@@ -120,7 +120,7 @@ static inline unsigned long print_context_stack(struct thread_info *tinfo,
 #ifdef CONFIG_FRAME_POINTER
        while (valid_stack_ptr(tinfo, (void *)ebp)) {
                addr = *(unsigned long *)(ebp + 4);
-               printk(" [<%08lx>] ", addr);
+               printk(KERN_EMERG " [<%08lx>] ", addr);
                print_symbol("%s", addr);
                printk("\n");
                ebp = *(unsigned long *)ebp;
@@ -129,7 +129,7 @@ static inline unsigned long print_context_stack(struct thread_info *tinfo,
        while (valid_stack_ptr(tinfo, stack)) {
                addr = *stack++;
                if (__kernel_text_address(addr)) {
-                       printk(" [<%08lx>]", addr);
+                       printk(KERN_EMERG " [<%08lx>]", addr);
                        print_symbol(" %s", addr);
                        printk("\n");
                }
@@ -161,7 +161,7 @@ void show_trace(struct task_struct *task, unsigned long * stack)
                stack = (unsigned long*)context->previous_esp;
                if (!stack)
                        break;
-               printk(" =======================\n");
+               printk(KERN_EMERG " =======================\n");
        }
 }
 
@@ -178,14 +178,15 @@ void show_stack(struct task_struct *task, unsigned long *esp)
        }
 
        stack = esp;
+       printk(KERN_EMERG);
        for(i = 0; i < kstack_depth_to_print; i++) {
                if (kstack_end(stack))
                        break;
                if (i && ((i % 8) == 0))
-                       printk("\n       ");
+                       printk("\n" KERN_EMERG "       ");
                printk("%08lx ", *stack++);
        }
-       printk("\nCall Trace:\n");
+       printk("\n" KERN_EMERG "Call Trace:\n");
        show_trace(task, esp);
 }
 
@@ -216,18 +217,18 @@ void show_registers(struct pt_regs *regs)
                ss = regs->xss & 0xffff;
        }
        print_modules();
-       printk("CPU:    %d\nEIP:    %04x:[<%08lx>]    %s VLI\nEFLAGS: %08lx"
-                       "   (%s) \n",
+       printk(KERN_EMERG "CPU:    %d\nEIP:    %04x:[<%08lx>]    %s VLI\n"
+                       "EFLAGS: %08lx   (%s) \n",
                smp_processor_id(), 0xffff & regs->xcs, regs->eip,
                print_tainted(), regs->eflags, system_utsname.release);
-       print_symbol("EIP is at %s\n", regs->eip);
-       printk("eax: %08lx   ebx: %08lx   ecx: %08lx   edx: %08lx\n",
+       print_symbol(KERN_EMERG "EIP is at %s\n", regs->eip);
+       printk(KERN_EMERG "eax: %08lx   ebx: %08lx   ecx: %08lx   edx: %08lx\n",
                regs->eax, regs->ebx, regs->ecx, regs->edx);
-       printk("esi: %08lx   edi: %08lx   ebp: %08lx   esp: %08lx\n",
+       printk(KERN_EMERG "esi: %08lx   edi: %08lx   ebp: %08lx   esp: %08lx\n",
                regs->esi, regs->edi, regs->ebp, esp);
-       printk("ds: %04x   es: %04x   ss: %04x\n",
+       printk(KERN_EMERG "ds: %04x   es: %04x   ss: %04x\n",
                regs->xds & 0xffff, regs->xes & 0xffff, ss);
-       printk("Process %s (pid: %d, threadinfo=%p task=%p)",
+       printk(KERN_EMERG "Process %s (pid: %d, threadinfo=%p task=%p)",
                current->comm, current->pid, current_thread_info(), current);
        /*
         * When in-kernel, we also print out the stack and code at the
@@ -236,10 +237,10 @@ void show_registers(struct pt_regs *regs)
        if (in_kernel) {
                u8 __user *eip;
 
-               printk("\nStack: ");
+               printk("\n" KERN_EMERG "Stack: ");
                show_stack(NULL, (unsigned long*)esp);
 
-               printk("Code: ");
+               printk(KERN_EMERG "Code: ");
 
                eip = (u8 __user *)regs->eip - 43;
                for (i = 0; i < 64; i++, eip++) {
@@ -280,15 +281,15 @@ static void handle_BUG(struct pt_regs *regs)
                (unsigned long)file < PAGE_OFFSET || __get_user(c, file))
                file = "<bad filename>";
 
-       printk("------------[ cut here ]------------\n");
-       printk(KERN_ALERT "kernel BUG at %s:%d!\n", file, line);
+       printk(KERN_EMERG "------------[ cut here ]------------\n");
+       printk(KERN_EMERG "kernel BUG at %s:%d!\n", file, line);
 
 no_bug:
        return;
 
        /* Here we know it was a BUG but file-n-line is unavailable */
 bug:
-       printk("Kernel BUG\n");
+       printk(KERN_EMERG "Kernel BUG\n");
 }
 
 /* This is gone through when something in the kernel
@@ -321,16 +322,20 @@ void die(const char * str, struct pt_regs * regs, long err)
        if (++die.lock_owner_depth < 3) {
                int nl = 0;
                handle_BUG(regs);
-               printk(KERN_ALERT "%s: %04lx [#%d]\n", str, err & 0xffff, ++die_counter);
+               printk(KERN_EMERG "%s: %04lx [#%d]\n", str, err & 0xffff, ++die_counter);
 #ifdef CONFIG_PREEMPT
-               printk("PREEMPT ");
+               printk(KERN_EMERG "PREEMPT ");
                nl = 1;
 #endif
 #ifdef CONFIG_SMP
+               if (!nl)
+                       printk(KERN_EMERG);
                printk("SMP ");
                nl = 1;
 #endif
 #ifdef CONFIG_DEBUG_PAGEALLOC
+               if (!nl)
+                       printk(KERN_EMERG);
                printk("DEBUG_PAGEALLOC");
                nl = 1;
 #endif
@@ -339,7 +344,7 @@ void die(const char * str, struct pt_regs * regs, long err)
        notify_die(DIE_OOPS, (char *)str, regs, err, 255, SIGSEGV);
                show_registers(regs);
        } else
-               printk(KERN_ERR "Recursive die() failure, output suppressed\n");
+               printk(KERN_EMERG "Recursive die() failure, output suppressed\n");
 
        bust_spinlocks(0);
        die.lock_owner = -1;
@@ -527,8 +532,10 @@ gp_in_kernel:
 
 static void mem_parity_error(unsigned char reason, struct pt_regs * regs)
 {
-       printk("Uhhuh. NMI received. Dazed and confused, but trying to continue\n");
-       printk("You probably have a hardware problem with your RAM chips\n");
+       printk(KERN_EMERG "Uhhuh. NMI received. Dazed and confused, but trying "
+                       "to continue\n");
+       printk(KERN_EMERG "You probably have a hardware problem with your RAM "
+                       "chips\n");
 
        /* Clear and disable the memory parity error line. */
        clear_mem_error(reason);
@@ -538,7 +545,7 @@ static void io_check_error(unsigned char reason, struct pt_regs * regs)
 {
        unsigned long i;
 
-       printk("NMI: IOCK error (debug interrupt?)\n");
+       printk(KERN_EMERG "NMI: IOCK error (debug interrupt?)\n");
        show_registers(regs);
 
        /* Re-enable the IOCK line, wait for a few seconds */
@@ -580,11 +587,11 @@ void die_nmi (struct pt_regs *regs, const char *msg)
        * to get a message out.
        */
        bust_spinlocks(1);
-       printk(msg);
+       printk(KERN_EMERG "%s", msg);
        printk(" on CPU%d, eip %08lx, registers:\n",
                smp_processor_id(), regs->eip);
        show_registers(regs);
-       printk("console shuts up ...\n");
+       printk(KERN_EMERG "console shuts up ...\n");
        console_silent();
        spin_unlock(&nmi_print_lock);
        bust_spinlocks(0);
@@ -990,8 +997,8 @@ asmlinkage void math_state_restore(struct pt_regs regs)
 
 asmlinkage void math_emulate(long arg)
 {
-       printk("math-emulation not enabled and no coprocessor found.\n");
-       printk("killing %s.\n",current->comm);
+       printk(KERN_EMERG "math-emulation not enabled and no coprocessor found.\n");
+       printk(KERN_EMERG "killing %s.\n",current->comm);
        force_sig(SIGFPE,current);
        schedule();
 }