powerpc: Show PAGE_SIZE in __die() output

The page size the kernel is built with is useful info when debugging a
crash, so add it to the output in __die().

Result looks like eg:

  kernel BUG at drivers/misc/lkdtm/bugs.c:63!
  Oops: Exception in kernel mode, sig: 5 [#1]
  LE PAGE_SIZE=64K SMP NR_CPUS=2048 NUMA pSeries
  Modules linked in: vmx_crypto kvm binfmt_misc ip_tables

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 164fc92..a872c64 100644 (file)
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -257,8 +257,9 @@ static int __die(const char *str, struct pt_regs *regs, long err)
 {
        printk("Oops: %s, sig: %ld [#%d]\n", str, err, ++die_counter);
 
-       printk("%s %s%s%s%s%s %s\n",
+       printk("%s PAGE_SIZE=%luK%s%s%s%s%s %s\n",
               IS_ENABLED(CONFIG_CPU_LITTLE_ENDIAN) ? "LE" : "BE",
+              PAGE_SIZE / 1024,
               IS_ENABLED(CONFIG_PREEMPT) ? " PREEMPT" : "",
               IS_ENABLED(CONFIG_SMP) ? " SMP" : "",
               IS_ENABLED(CONFIG_SMP) ? (" NR_CPUS=" __stringify(NR_CPUS)) : "",