[PATCH v2 6/9] printk/nbcon: use panic_on_this_cpu() helper

[Jinchao Wang]

nbcon_context_try_acquire() compared panic_cpu directly with
smp_processor_id().  This open-coded check is now provided by
panic_on_this_cpu().

Switch to panic_on_this_cpu() to simplify the code and improve readability.

Signed-off-by: Jinchao Wang <wangjinchao...@gmail.com>
---
 kernel/printk/nbcon.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/printk/nbcon.c b/kernel/printk/nbcon.c
index 646801813415..7490865e2f44 100644
--- a/kernel/printk/nbcon.c
+++ b/kernel/printk/nbcon.c
@@ -2,6 +2,7 @@
 // Copyright (C) 2022 Linutronix GmbH, John Ogness
 // Copyright (C) 2022 Intel, Thomas Gleixner
 
+#include "linux/panic.h"
 #include <linux/atomic.h>
 #include <linux/bug.h>
 #include <linux/console.h>
@@ -589,7 +590,6 @@ static struct printk_buffers panic_nbcon_pbufs;
  */
 static bool nbcon_context_try_acquire(struct nbcon_context *ctxt, bool 
is_reacquire)
 {
-       unsigned int cpu = smp_processor_id();
        struct console *con = ctxt->console;
        struct nbcon_state cur;
        int err;
@@ -614,7 +614,7 @@ static bool nbcon_context_try_acquire(struct nbcon_context 
*ctxt, bool is_reacqu
        /* Acquire succeeded. */
 
        /* Assign the appropriate buffer for this context. */
-       if (atomic_read(&panic_cpu) == cpu)
+       if (panic_on_this_cpu())
                ctxt->pbufs = &panic_nbcon_pbufs;
        else
                ctxt->pbufs = con->pbufs;
-- 
2.43.0