Le 08/02/2025 à 08:35, Shrikanth Hegde a écrit :


On 2/4/25 13:52, Sebastian Andrzej Siewior wrote:
Use preempt_model_str() instead of manually conducting the preemption
model. Use pr_emerg() instead of printk() to pass a loglevel.

even on powerpc, i see __die ends up calling show_regs_print_info().
Why print it twice?

I don't understand what you mean, what is printed twice ?

I can't see show_regs_print_info() printing the preemption model, am I missing something ?

Christophe



Cc: Madhavan Srinivasan <ma...@linux.ibm.com>
Cc: Michael Ellerman <m...@ellerman.id.au>
Cc: Nicholas Piggin <npig...@gmail.com>
Cc: Christophe Leroy <christophe.le...@csgroup.eu>
Cc: Naveen N Rao <nav...@kernel.org>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Sebastian Andrzej Siewior <bige...@linutronix.de>
---
v2…v3:
   - Use printk() instead of pr_emerg() to remain consistent with the
     other invocations in terms of printing context.

  arch/powerpc/kernel/traps.c | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index edf5cabe5dfdb..d6d77d92b3358 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -263,10 +263,10 @@ 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 PAGE_SIZE=%luK%s%s%s%s%s%s %s\n",
+    printk("%s PAGE_SIZE=%luK%s %s %s%s%s%s %s\n",
             IS_ENABLED(CONFIG_CPU_LITTLE_ENDIAN) ? "LE" : "BE",
             PAGE_SIZE / 1024, get_mmu_str(),
-           IS_ENABLED(CONFIG_PREEMPT) ? " PREEMPT" : "",
+           preempt_model_str(),
             IS_ENABLED(CONFIG_SMP) ? " SMP" : "",
             IS_ENABLED(CONFIG_SMP) ? (" NR_CPUS=" __stringify(NR_CPUS)) : "",
             debug_pagealloc_enabled() ? " DEBUG_PAGEALLOC" : "",



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