commit 8b14d3efedb20c12e0fe9e3c43bb06f95e173c1e
author Kefeng Wang <wangkefeng.wang@huawei.com> Mon May 11 10:19:53 2020 +0800
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> Wed Jun 03 08:19:30 2020 +0200
tree 89a3282b41a15ccccae8539dc1c71714aa4e1c32
parent 7a855b4d7a3113c6c9be3c1ec7a7534e157b19ae

riscv: stacktrace: Fix undefined reference to `walk_stackframe'

[ Upstream commit 0502bee37cdef755d63eee60236562e5605e2480 ]

Drop static declaration to fix following build error if FRAME_POINTER disabled,
  riscv64-linux-ld: arch/riscv/kernel/perf_callchain.o: in function `.L0':
  perf_callchain.c:(.text+0x2b8): undefined reference to `walk_stackframe'

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

arch/riscv/kernel/stacktrace.c

diff --git a/arch/riscv/kernel/stacktrace.c b/arch/riscv/kernel/stacktrace.c
index a4b1d943..74b2168 100644
--- a/arch/riscv/kernel/stacktrace.c
+++ b/arch/riscv/kernel/stacktrace.c
@@ -75,7 +75,7 @@
 
 #else /* !CONFIG_FRAME_POINTER */
 
-static void notrace walk_stackframe(struct task_struct *task,
+void notrace walk_stackframe(struct task_struct *task,
 	struct pt_regs *regs, bool (*fn)(unsigned long, void *), void *arg)
 {
 	unsigned long sp, pc;