sched/core: Move preempt_model_*() helpers from sched.h to preempt.h

Move the declarations and inlined implementations of the preempt_model_*()
helpers to preempt.h so that they can be referenced in spinlock.h without
creating a potential circular dependency between spinlock.h and sched.h.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Ankur Arora <ankur.a.arora@oracle.com>
Link: https://lkml.kernel.org/r/20240528003521.979836-2-ankur.a.arora@oracle.com

diff --git a/include/linux/preempt.h b/include/linux/preempt.h
index 7233e9cf1bab60a46037172fa5468706c8e3a232..ce76f1a45722529832a5eaefc077356cc0124c9f 100644 (file)
--- a/include/linux/preempt.h
+++ b/include/linux/preempt.h
@@ -481,4 +481,45 @@ DEFINE_LOCK_GUARD_0(preempt, preempt_disable(), preempt_enable())
 DEFINE_LOCK_GUARD_0(preempt_notrace, preempt_disable_notrace(), preempt_enable_notrace())
 DEFINE_LOCK_GUARD_0(migrate, migrate_disable(), migrate_enable())
 
+#ifdef CONFIG_PREEMPT_DYNAMIC
+
+extern bool preempt_model_none(void);
+extern bool preempt_model_voluntary(void);
+extern bool preempt_model_full(void);
+
+#else
+
+static inline bool preempt_model_none(void)
+{
+       return IS_ENABLED(CONFIG_PREEMPT_NONE);
+}
+static inline bool preempt_model_voluntary(void)
+{
+       return IS_ENABLED(CONFIG_PREEMPT_VOLUNTARY);
+}
+static inline bool preempt_model_full(void)
+{
+       return IS_ENABLED(CONFIG_PREEMPT);
+}
+
+#endif
+
+static inline bool preempt_model_rt(void)
+{
+       return IS_ENABLED(CONFIG_PREEMPT_RT);
+}
+
+/*
+ * Does the preemption model allow non-cooperative preemption?
+ *
+ * For !CONFIG_PREEMPT_DYNAMIC kernels this is an exact match with
+ * CONFIG_PREEMPTION; for CONFIG_PREEMPT_DYNAMIC this doesn't work as the
+ * kernel is *built* with CONFIG_PREEMPTION=y but may run with e.g. the
+ * PREEMPT_NONE model.
+ */
+static inline bool preempt_model_preemptible(void)
+{
+       return preempt_model_full() || preempt_model_rt();
+}
+
 #endif /* __LINUX_PREEMPT_H */

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 61591ac6eab6db1fc41c0e8ab156d46c584bf9f7..90691d99027e3680763c54dbad537fac2444ebe8 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2064,47 +2064,6 @@ extern int __cond_resched_rwlock_write(rwlock_t *lock);
        __cond_resched_rwlock_write(lock);                                      \
 })
 
-#ifdef CONFIG_PREEMPT_DYNAMIC
-
-extern bool preempt_model_none(void);
-extern bool preempt_model_voluntary(void);
-extern bool preempt_model_full(void);
-
-#else
-
-static inline bool preempt_model_none(void)
-{
-       return IS_ENABLED(CONFIG_PREEMPT_NONE);
-}
-static inline bool preempt_model_voluntary(void)
-{
-       return IS_ENABLED(CONFIG_PREEMPT_VOLUNTARY);
-}
-static inline bool preempt_model_full(void)
-{
-       return IS_ENABLED(CONFIG_PREEMPT);
-}
-
-#endif
-
-static inline bool preempt_model_rt(void)
-{
-       return IS_ENABLED(CONFIG_PREEMPT_RT);
-}
-
-/*
- * Does the preemption model allow non-cooperative preemption?
- *
- * For !CONFIG_PREEMPT_DYNAMIC kernels this is an exact match with
- * CONFIG_PREEMPTION; for CONFIG_PREEMPT_DYNAMIC this doesn't work as the
- * kernel is *built* with CONFIG_PREEMPTION=y but may run with e.g. the
- * PREEMPT_NONE model.
- */
-static inline bool preempt_model_preemptible(void)
-{
-       return preempt_model_full() || preempt_model_rt();
-}
-
 static __always_inline bool need_resched(void)
 {
        return unlikely(tif_need_resched());