[PATCH v4 12/16] powerpc: implement ftrace_enabled helper

[Nicholas Piggin]

Signed-off-by: Nicholas Piggin <npiggin at gmail.com>
Reviewed-by: Christophe Leroy <christophe.leroy at c-s.fr>
---
 arch/powerpc/include/asm/ftrace.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/powerpc/include/asm/ftrace.h b/arch/powerpc/include/asm/ftrace.h
index f54a08a2cd70..bc76970b6ee5 100644
--- a/arch/powerpc/include/asm/ftrace.h
+++ b/arch/powerpc/include/asm/ftrace.h
@@ -108,9 +108,23 @@ static inline void this_cpu_enable_ftrace(void)
 {
 	get_paca()->ftrace_enabled = 1;
 }
+
+/* Disable ftrace on this CPU if possible (may not be implemented) */
+static inline void this_cpu_set_ftrace_enabled(u8 ftrace_enabled)
+{
+	get_paca()->ftrace_enabled = ftrace_enabled;
+}
+
+static inline u8 this_cpu_get_ftrace_enabled(void)
+{
+	return get_paca()->ftrace_enabled;
+}
+
 #else /* CONFIG_PPC64 */
 static inline void this_cpu_disable_ftrace(void) { }
 static inline void this_cpu_enable_ftrace(void) { }
+static inline void this_cpu_set_ftrace_enabled(u8 ftrace_enabled) { }
+static inline u8 this_cpu_get_ftrace_enabled(void) { return 1; }
 #endif /* CONFIG_PPC64 */
 #endif /* !__ASSEMBLY__ */
 
-- 
2.23.0