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SubjectRe: [RFC PATCH 1/4] ftrace: Expose flags used for ftrace_replace_code()
On Sat, 18 May 2019 00:32:45 +0530
"Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com> wrote:

> Since ftrace_replace_code() is a __weak function and can be overridden,
> we need to expose the flags that can be set. So, move the flags enum to
> the header file.
>
> Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>

Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

-- Steve

> ---
> include/linux/ftrace.h | 5 +++++
> kernel/trace/ftrace.c | 5 -----
> 2 files changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
> index 20899919ead8..835e761f63b0 100644
> --- a/include/linux/ftrace.h
> +++ b/include/linux/ftrace.h
> @@ -162,6 +162,11 @@ enum {
> FTRACE_OPS_FL_TRACE_ARRAY = 1 << 15,
> };
>
> +enum {
> + FTRACE_MODIFY_ENABLE_FL = (1 << 0),
> + FTRACE_MODIFY_MAY_SLEEP_FL = (1 << 1),
> +};
> +
> #ifdef CONFIG_DYNAMIC_FTRACE
> /* The hash used to know what functions callbacks trace */
> struct ftrace_ops_hash {
> diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
> index b920358dd8f7..38c15cd27fc4 100644
> --- a/kernel/trace/ftrace.c
> +++ b/kernel/trace/ftrace.c
> @@ -78,11 +78,6 @@
> #define ASSIGN_OPS_HASH(opsname, val)
> #endif
>
> -enum {
> - FTRACE_MODIFY_ENABLE_FL = (1 << 0),
> - FTRACE_MODIFY_MAY_SLEEP_FL = (1 << 1),
> -};
> -
> struct ftrace_ops ftrace_list_end __read_mostly = {
> .func = ftrace_stub,
> .flags = FTRACE_OPS_FL_RECURSION_SAFE | FTRACE_OPS_FL_STUB,

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