diff options
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/trace/Kconfig | 5 | ||||
-rw-r--r-- | kernel/trace/ftrace.c | 2 |
2 files changed, 7 insertions, 0 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index 036cec1fcd24..fd6754b88f87 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig | |||
@@ -47,6 +47,11 @@ config HAVE_FENTRY | |||
47 | help | 47 | help |
48 | Arch supports the gcc options -pg with -mfentry | 48 | Arch supports the gcc options -pg with -mfentry |
49 | 49 | ||
50 | config HAVE_NOP_MCOUNT | ||
51 | bool | ||
52 | help | ||
53 | Arch supports the gcc options -pg with -mrecord-mcount and -nop-mcount | ||
54 | |||
50 | config HAVE_C_RECORDMCOUNT | 55 | config HAVE_C_RECORDMCOUNT |
51 | bool | 56 | bool |
52 | help | 57 | help |
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 48b5b466ec7a..468e8527e979 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c | |||
@@ -2950,12 +2950,14 @@ static int ftrace_update_code(struct module *mod, struct ftrace_page *new_pgs) | |||
2950 | p = &pg->records[i]; | 2950 | p = &pg->records[i]; |
2951 | p->flags = rec_flags; | 2951 | p->flags = rec_flags; |
2952 | 2952 | ||
2953 | #ifndef CC_USING_NOP_MCOUNT | ||
2953 | /* | 2954 | /* |
2954 | * Do the initial record conversion from mcount jump | 2955 | * Do the initial record conversion from mcount jump |
2955 | * to the NOP instructions. | 2956 | * to the NOP instructions. |
2956 | */ | 2957 | */ |
2957 | if (!ftrace_code_disable(mod, p)) | 2958 | if (!ftrace_code_disable(mod, p)) |
2958 | break; | 2959 | break; |
2960 | #endif | ||
2959 | 2961 | ||
2960 | update_cnt++; | 2962 | update_cnt++; |
2961 | } | 2963 | } |