Commit e5873d6f authored by Heiko Carstens's avatar Heiko Carstens Committed by Vasily Gorbik
Browse files

s390/ftrace: add missing serialization for graph caller patching 



CPUs must be serialized also when ftrace_graph_caller gets patched.
This is missing since ftrace function graph support was added on s390.

Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent ae2b9a11

arch/s390/kernel/ftrace.c

+2 −0
Original line number Diff line number Diff line
@@ -268,12 +268,14 @@ NOKPROBE_SYMBOL(prepare_ftrace_return); 
int ftrace_enable_ftrace_graph_caller(void)

{

	brcl_disable(ftrace_graph_caller);

	text_poke_sync_lock();

	return 0;

}



int ftrace_disable_ftrace_graph_caller(void)

{

	brcl_enable(ftrace_graph_caller);

	text_poke_sync_lock();

	return 0;

}