diff options
| author | Heiko Carstens <hca@linux.ibm.com> | 2021-10-01 14:21:43 +0200 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2021-10-11 20:55:58 +0200 |
| commit | ae2b9a11b494a9ec59d7dc11d42654d659f859c6 (patch) | |
| tree | b6d6cd4e1115b968bfe0521296bcbaebfaa50a1a /arch/s390/kernel | |
| parent | 1c27dfb24e3b2a026488aa51e9991e27a1d94164 (diff) | |
s390/ftrace: use text_poke_sync_lock()
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/kernel')
| -rw-r--r-- | arch/s390/kernel/ftrace.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/s390/kernel/ftrace.c b/arch/s390/kernel/ftrace.c index 5d0c45c13b5f..04a3e88c58d7 100644 --- a/arch/s390/kernel/ftrace.c +++ b/arch/s390/kernel/ftrace.c @@ -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; } |