[PATCH v2 1/3] powerpc: Stop using pr_cont() in __die()

[Michael Ellerman]

Using pr_cont() risks having our output interleaved with other output
from other CPUs. Instead print everything in a single printk() call.

Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
---
 arch/powerpc/kernel/traps.c | 26 ++++++++------------------
 1 file changed, 8 insertions(+), 18 deletions(-)

v2: Use a single printk with (mostly) compile time checks rather than
constructing the string with seq_buf.

diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 64936b60d521..164fc92895be 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -257,24 +257,14 @@ static int __die(const char *str, struct pt_regs *regs, long err)
 {
 	printk("Oops: %s, sig: %ld [#%d]\n", str, err, ++die_counter);
 
-	if (IS_ENABLED(CONFIG_CPU_LITTLE_ENDIAN))
-		printk("LE ");
-	else
-		printk("BE ");
-
-	if (IS_ENABLED(CONFIG_PREEMPT))
-		pr_cont("PREEMPT ");
-
-	if (IS_ENABLED(CONFIG_SMP))
-		pr_cont("SMP NR_CPUS=%d ", NR_CPUS);
-
-	if (debug_pagealloc_enabled())
-		pr_cont("DEBUG_PAGEALLOC ");
-
-	if (IS_ENABLED(CONFIG_NUMA))
-		pr_cont("NUMA ");
-
-	pr_cont("%s\n", ppc_md.name ? ppc_md.name : "");
+	printk("%s %s%s%s%s%s %s\n",
+	       IS_ENABLED(CONFIG_CPU_LITTLE_ENDIAN) ? "LE" : "BE",
+	       IS_ENABLED(CONFIG_PREEMPT) ? " PREEMPT" : "",
+	       IS_ENABLED(CONFIG_SMP) ? " SMP" : "",
+	       IS_ENABLED(CONFIG_SMP) ? (" NR_CPUS=" __stringify(NR_CPUS)) : "",
+	       debug_pagealloc_enabled() ? " DEBUG_PAGEALLOC" : "",
+	       IS_ENABLED(CONFIG_NUMA) ? " NUMA" : "",
+	       ppc_md.name ? ppc_md.name : "");
 
 	if (notify_die(DIE_OOPS, str, regs, err, 255, SIGSEGV) == NOTIFY_STOP)
 		return 1;
-- 
2.20.1