Re: [PATCH v2 2/3] powerpc: Show PAGE_SIZE in __die() output
flat view
From: Christophe Leroy <hidden>
Date: 2019-01-10 13:44:31
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 <mpe@ellerman.id.au>
Reviewed-by: Christophe Leroy <redacted>
quoted hunk ↗ jump to hunk
--- 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)) : "",