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xtensa: clean up printk usage for boot/crash logging

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Convert printk(KERN_* to pr_* and printk's without level to pr_cont.
This fixes torn register dumps, stack dumps, stack traces and timestamps
in the middle of 'Calibrating CPU frequency' message.
Also drop unused show_code and drop false comment about show_stack.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov 2016-11-04 14:45:08 -07:00
parent 712cba5d87
commit d4eccafcaf
2 changed files with 29 additions and 59 deletions
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14
arch/xtensa/kernel/time.c
View File

@ -172,10 +172,11 @@ void __init time_init(void)
{
of_clk_init(NULL);
#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
printk("Calibrating CPU frequency ");
pr_info("Calibrating CPU frequency ");
calibrate_ccount();
printk("%d.%02d MHz\n", (int)ccount_freq/1000000,
(int)(ccount_freq/10000)%100);
pr_cont("%d.%02d MHz\n",
(int)ccount_freq / 1000000,
(int)(ccount_freq / 10000) % 100);
#else
ccount_freq = CONFIG_XTENSA_CPU_CLOCK*1000000UL;
#endif
@ -210,9 +211,8 @@ irqreturn_t timer_interrupt(int irq, void *dev_id)
void calibrate_delay(void)
{
loops_per_jiffy = ccount_freq / HZ;
printk("Calibrating delay loop (skipped)... "
"%lu.%02lu BogoMIPS preset\n",
loops_per_jiffy/(1000000/HZ),
(loops_per_jiffy/(10000/HZ)) % 100);
pr_info("Calibrating delay loop (skipped)... %lu.%02lu BogoMIPS preset\n",
loops_per_jiffy / (1000000 / HZ),
(loops_per_jiffy / (10000 / HZ)) % 100);
}
#endif

74
arch/xtensa/kernel/traps.c
View File

@ -465,26 +465,25 @@ void show_regs(struct pt_regs * regs)
for (i = 0; i < 16; i++) {
if ((i % 8) == 0)
printk(KERN_INFO "a%02d:", i);
printk(KERN_CONT " %08lx", regs->areg[i]);
pr_info("a%02d:", i);
pr_cont(" %08lx", regs->areg[i]);
}
printk(KERN_CONT "\n");
printk("pc: %08lx, ps: %08lx, depc: %08lx, excvaddr: %08lx\n",
regs->pc, regs->ps, regs->depc, regs->excvaddr);
printk("lbeg: %08lx, lend: %08lx lcount: %08lx, sar: %08lx\n",
regs->lbeg, regs->lend, regs->lcount, regs->sar);
pr_cont("\n");
pr_info("pc: %08lx, ps: %08lx, depc: %08lx, excvaddr: %08lx\n",
regs->pc, regs->ps, regs->depc, regs->excvaddr);
pr_info("lbeg: %08lx, lend: %08lx lcount: %08lx, sar: %08lx\n",
regs->lbeg, regs->lend, regs->lcount, regs->sar);
if (user_mode(regs))
printk("wb: %08lx, ws: %08lx, wmask: %08lx, syscall: %ld\n",
regs->windowbase, regs->windowstart, regs->wmask,
regs->syscall);
pr_cont("wb: %08lx, ws: %08lx, wmask: %08lx, syscall: %ld\n",
regs->windowbase, regs->windowstart, regs->wmask,
regs->syscall);
}
static int show_trace_cb(struct stackframe *frame, void *data)
{
if (kernel_text_address(frame->pc)) {
printk(" [<%08lx>] ", frame->pc);
print_symbol("%s\n", frame->pc);
pr_cont(" [<%08lx>]", frame->pc);
print_symbol(" %s\n", frame->pc);
}
return 0;
}
@ -494,19 +493,13 @@ void show_trace(struct task_struct *task, unsigned long *sp)
if (!sp)
sp = stack_pointer(task);
printk("Call Trace:");
#ifdef CONFIG_KALLSYMS
printk("\n");
#endif
pr_info("Call Trace:\n");
walk_stackframe(sp, show_trace_cb, NULL);
printk("\n");
#ifndef CONFIG_KALLSYMS
pr_cont("\n");
#endif
}
/*
* This routine abuses get_user()/put_user() to reference pointers
* with at least a bit of error checking ...
*/
static int kstack_depth_to_print = 24;
void show_stack(struct task_struct *task, unsigned long *sp)
@ -518,52 +511,29 @@ void show_stack(struct task_struct *task, unsigned long *sp)
sp = stack_pointer(task);
stack = sp;
printk("\nStack: ");
pr_info("Stack:\n");
for (i = 0; i < kstack_depth_to_print; i++) {
if (kstack_end(sp))
break;
if (i && ((i % 8) == 0))
printk("\n ");
printk("%08lx ", *sp++);
pr_cont(" %08lx", *sp++);
if (i % 8 == 7)
pr_cont("\n");
}
printk("\n");
show_trace(task, stack);
}
void show_code(unsigned int *pc)
{
long i;
printk("\nCode:");
for(i = -3 ; i < 6 ; i++) {
unsigned long insn;
if (__get_user(insn, pc + i)) {
printk(" (Bad address in pc)\n");
break;
}
printk("%c%08lx%c",(i?' ':'<'),insn,(i?' ':'>'));
}
}
DEFINE_SPINLOCK(die_lock);
void die(const char * str, struct pt_regs * regs, long err)
{
static int die_counter;
int nl = 0;
console_verbose();
spin_lock_irq(&die_lock);
printk("%s: sig: %ld [#%d]\n", str, err, ++die_counter);
#ifdef CONFIG_PREEMPT
printk("PREEMPT ");
nl = 1;
#endif
if (nl)
printk("\n");
pr_info("%s: sig: %ld [#%d]%s\n", str, err, ++die_counter,
IS_ENABLED(CONFIG_PREEMPT) ? " PREEMPT" : "");
show_regs(regs);
if (!user_mode(regs))
show_stack(NULL, (unsigned long*)regs->areg[1]);