From: Steven Rostedt (VMware) rostedt@goodmis.org
commit 4e84dc47bb48accbbeeba4e6bb3f31aa7895323c upstream.
The ftrace callback prototype was changed to pass a special ftrace_regs instead of pt_regs as the last parameter, but the static ftrace for nds32 missed updating ftrace_trace_function and this caused a warning when compared to ftrace_stub:
../arch/nds32/kernel/ftrace.c: In function '_mcount': ../arch/nds32/kernel/ftrace.c:24:35: error: comparison of distinct pointer types lacks a cast [-Werror] 24 | if (ftrace_trace_function != ftrace_stub) | ^~
Link: https://lore.kernel.org/all/20211027055554.19372-1-rdunlap@infradead.org/ Link: https://lkml.kernel.org/r/20211027125101.33449969@gandalf.local.home
Cc: Ingo Molnar mingo@kernel.org Cc: Andrew Morton akpm@linux-foundation.org Cc: Nick Hu nickhu@andestech.com Cc: Greentime Hu green.hu@gmail.com Cc: Vincent Chen deanbo422@gmail.com Cc: Masami Hiramatsu mhiramat@kernel.org Cc: Peter Zijlstra peterz@infradead.org Cc: stable@vger.kernel.org Fixes: d19ad0775dcd6 ("ftrace: Have the callbacks receive a struct ftrace_regs instead of pt_regs") Reported-by: Randy Dunlap rdunlap@infradead.org Signed-off-by: Steven Rostedt (VMware) rostedt@goodmis.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/nds32/kernel/ftrace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/nds32/kernel/ftrace.c +++ b/arch/nds32/kernel/ftrace.c @@ -6,7 +6,7 @@
#ifndef CONFIG_DYNAMIC_FTRACE extern void (*ftrace_trace_function)(unsigned long, unsigned long, - struct ftrace_ops*, struct pt_regs*); + struct ftrace_ops*, struct ftrace_regs*); extern void ftrace_graph_caller(void);
noinline void __naked ftrace_stub(unsigned long ip, unsigned long parent_ip,