[56/91] smp: kernel/panic.c - silence warnings

Commit Message

Andrew Morton May 7, 2021, 1:04 a.m. UTC

From: He Ying <[e-mail]>
Subject: smp: kernel/panic.c - silence warnings

We found these warnings in kernel/panic.c by using sparse tool:
warning: symbol 'panic_smp_self_stop' was not declared.
warning: symbol 'nmi_panic_self_stop' was not declared.
warning: symbol 'crash_smp_send_stop' was not declared.

To avoid them, add declarations for these three functions in
include/linux/smp.h.

Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: He Ying <[e-mail]>
Reported-by: Hulk Robot <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
---

 include/linux/smp.h |    8 ++++++++
 1 file changed, 8 insertions(+)

Patch

--- a/include/linux/smp.h~smp-kernel-panicc-silence-warnings
+++ a/include/linux/smp.h
@@ -56,6 +56,14 @@  void on_each_cpu_cond_mask(smp_cond_func
 int smp_call_function_single_async(int cpu, call_single_data_t *csd);
 
 /*
+ * Cpus stopping functions in panic. All have default weak definitions.
+ * Architecture-dependent code may override them.
+ */
+void panic_smp_self_stop(void);
+void nmi_panic_self_stop(struct pt_regs *regs);
+void crash_smp_send_stop(void);
+
+/*
  * Call a function on all processors
  */
 static inline void on_each_cpu(smp_call_func_t func, void *info, int wait)