linux-kernel - [RFC PATCH 1/4] ftrace: Expose flags used for ftrace_replace

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Date:   Sat, 18 May 2019 00:32:45 +0530
From:   "Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com>
To:     Steven Rostedt <rostedt@...dmis.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Nicholas Piggin <npiggin@...il.com>
Cc:     <linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>
Subject: [RFC PATCH 1/4] ftrace: Expose flags used for ftrace_replace_code()

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@...ux.vnet.ibm.com>
---
 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,
-- 
2.21.0