Commit ae2b9a11 authored by Heiko Carstens's avatar Heiko Carstens Committed by Vasily Gorbik
Browse files

s390/ftrace: use text_poke_sync_lock() 



Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent 1c27dfb2

arch/s390/kernel/ftrace.c

+6 −6
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
#include <linux/kprobes.h>

#include <trace/syscall.h>

#include <asm/asm-offsets.h>

#include <asm/text-patching.h>

#include <asm/cacheflush.h>

#include <asm/ftrace.lds.h>

#include <asm/nospec-branch.h>
@@ -207,14 +208,13 @@ void arch_ftrace_update_code(int command) 
	ftrace_modify_all_code(command);

}



static void __ftrace_sync(void *dummy)

{

}



int ftrace_arch_code_modify_post_process(void)

{

	/* Send SIGP to the other CPUs, so they see the new code. */

	smp_call_function(__ftrace_sync, NULL, 1);

	/*

	 * Flush any pre-fetched instructions on all

	 * CPUs to make the new code visible.

	 */

	text_poke_sync_lock();

	return 0;

}