The related assemble code can not find the static inline function. The
related commit "ad65782 context_tracking: Optimize main APIs off case
with static key" causes this issue.
The related error (for arm, with allmodconfig):
LD init/built-in.o
arch/arm/kernel/built-in.o: In function `ret_fast_syscall':
arch/arm/kernel/entry-common.S:42: undefined reference to `user_enter'
arch/arm/kernel/built-in.o: In function `no_work_pending':
arch/arm/kernel/entry-common.S:77: undefined reference to `user_enter'
arch/arm/kernel/built-in.o: In function `vector_swi':
arch/arm/kernel/entry-common.S:376: undefined reference to `user_exit'
arch/arm/kernel/built-in.o: In function `__dabt_usr':
arch/arm/kernel/entry-armv.S:365: undefined reference to `user_exit'
arch/arm/kernel/built-in.o: In function `__irq_usr':
arch/arm/kernel/entry-armv.S:375: undefined reference to `user_exit'
arch/arm/kernel/built-in.o: In function `__und_usr':
arch/arm/kernel/entry-armv.S:388: undefined reference to `user_exit'
arch/arm/kernel/built-in.o: In function `__pabt_usr':
arch/arm/kernel/entry-armv.S:662: undefined reference to `user_exit'
Signed-off-by: Chen Gang <[email protected]>
---
include/linux/context_tracking.h | 14 ++------------
kernel/context_tracking.c | 12 ++++++++++++
2 files changed, 14 insertions(+), 12 deletions(-)
diff --git a/include/linux/context_tracking.h b/include/linux/context_tracking.h
index 1581587..bf220f7 100644
--- a/include/linux/context_tracking.h
+++ b/include/linux/context_tracking.h
@@ -10,23 +10,13 @@
#ifdef CONFIG_CONTEXT_TRACKING
extern void context_tracking_cpu_set(int cpu);
+extern void user_enter(void);
+extern void user_exit(void);
extern void context_tracking_user_enter(void);
extern void context_tracking_user_exit(void);
extern void __context_tracking_task_switch(struct task_struct *prev,
struct task_struct *next);
-static inline void user_enter(void)
-{
- if (static_key_false(&context_tracking_enabled))
- context_tracking_user_enter();
-
-}
-static inline void user_exit(void)
-{
- if (static_key_false(&context_tracking_enabled))
- context_tracking_user_exit();
-}
-
static inline enum ctx_state exception_enter(void)
{
enum ctx_state prev_ctx;
diff --git a/kernel/context_tracking.c b/kernel/context_tracking.c
index 013161f..c03d0d6 100644
--- a/kernel/context_tracking.c
+++ b/kernel/context_tracking.c
@@ -29,6 +29,18 @@ EXPORT_SYMBOL_GPL(context_tracking_enabled);
DEFINE_PER_CPU(struct context_tracking, context_tracking);
EXPORT_SYMBOL_GPL(context_tracking);
+void user_enter(void)
+{
+ if (static_key_false(&context_tracking_enabled))
+ context_tracking_user_enter();
+}
+
+void user_exit(void)
+{
+ if (static_key_false(&context_tracking_enabled))
+ context_tracking_user_exit();
+}
+
void context_tracking_cpu_set(int cpu)
{
if (!per_cpu(context_tracking.active, cpu)) {
--
1.7.7.6
--
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