Hi all, After merging the kspp-gustavo tree, today's linux-next build (powerpc pseries_le_defconfig) failed like this: In file included from include/linux/perf_event.h:49, from arch/powerpc/perf/callchain.c:9: include/linux/ftrace.h:49:41: error: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration [-Werror] 49 | struct ftrace_ops *op, struct ftrace_regs *fregs); | ^~~~~~~~~~~ cc1: all warnings being treated as errors (many of these) Caused by commit c45ede6c2781 ("ftrace: Fix -Wmissing-prototypes errors") I have added the following fixup for today. From: Stephen Rothwell Date: Mon, 18 Oct 2021 17:56:30 +1100 Subject: [PATCH] fixup for "ftrace: Fix -Wmissing-prototypes errors" Signed-off-by: Stephen Rothwell --- include/linux/ftrace.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index 871b51bec170..ada656c6824d 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -45,6 +45,7 @@ struct ftrace_ops; void arch_ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip); #else # define FTRACE_FORCE_LIST_FUNC 0 +struct ftrace_regs; void arch_ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip, struct ftrace_ops *op, struct ftrace_regs *fregs); #endif -- 2.33.0 -- Cheers, Stephen Rothwell