Le 10/01/2019 à 12:57, Michael Ellerman a écrit :
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 <m...@ellerman.id.au>
Reviewed-by: Christophe Leroy <christophe.le...@c-s.fr>
---
arch/powerpc/kernel/traps.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
v2: Adapt to single printk.
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 164fc92895be..a872c64618ad 100644
--- 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)) : "",