[PATCH] sched/rt, powerpc: Prepare for PREEMPT_RT

From: Wang Qing
Date: Sun Nov 08 2020 - 22:40:26 EST


Add PREEMPT_RT output to die().

Signed-off-by: Wang Qing <wangqing@xxxxxxxx>
---
arch/powerpc/kernel/traps.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 5006dcb..6dfe567
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -258,6 +258,14 @@ static char *get_mmu_str(void)
return "";
}

+#ifdef CONFIG_PREEMPT
+#define S_PREEMPT " PREEMPT"
+#elif defined(CONFIG_PREEMPT_RT)
+#define S_PREEMPT " PREEMPT_RT"
+#else
+#define S_PREEMPT ""
+#endif
+
static int __die(const char *str, struct pt_regs *regs, long err)
{
printk("Oops: %s, sig: %ld [#%d]\n", str, err, ++die_counter);
@@ -265,7 +273,7 @@ static int __die(const char *str, struct pt_regs *regs, long err)
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" : "",
+ S_PREEMPT,
IS_ENABLED(CONFIG_SMP) ? " SMP" : "",
IS_ENABLED(CONFIG_SMP) ? (" NR_CPUS=" __stringify(NR_CPUS)) : "",
debug_pagealloc_enabled() ? " DEBUG_PAGEALLOC" : "",
--
2.7.4