[PATCH 03/17] sched_ext: Move scx_exit(), scx_error() and friends to ext_internal.h

[PATCH 03/17] sched_ext: Move scx_exit(), scx_error() and friends to ext_internal.h

[Tejun Heo]

Things shared across multiple .c files belong in a header. scx_exit() /
scx_error() (and their scx_vexit() / scx_verror() siblings) are already
called from ext_idle.c and the upcoming ext_cid.c, and it was only
build_policy.c's textual inclusion of ext.c that made the references
resolve. Move the whole family to ext_internal.h.

Pure visibility change.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Cheng-Yang Chou <yphbchou0911@gmail.com>
---
 kernel/sched/ext.c          | 13 ++++---------
 kernel/sched/ext_internal.h |  8 ++++++++
 2 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c
index 1d6613dc4d3b..d57ba3df0c8c 100644
--- a/kernel/sched/ext.c
+++ b/kernel/sched/ext.c
@@ -235,12 +235,10 @@ static void run_deferred(struct rq *rq);
 static bool task_dead_and_done(struct task_struct *p);
 static void scx_kick_cpu(struct scx_sched *sch, s32 cpu, u64 flags);
 static void scx_disable(struct scx_sched *sch, enum scx_exit_kind kind);
-static bool scx_vexit(struct scx_sched *sch, enum scx_exit_kind kind,
-		      s64 exit_code, const char *fmt, va_list args);
 
-static __printf(4, 5) bool scx_exit(struct scx_sched *sch,
-				    enum scx_exit_kind kind, s64 exit_code,
-				    const char *fmt, ...)
+__printf(4, 5) bool scx_exit(struct scx_sched *sch,
+			     enum scx_exit_kind kind, s64 exit_code,
+			     const char *fmt, ...)
 {
 	va_list args;
 	bool ret;
@@ -252,9 +250,6 @@ static __printf(4, 5) bool scx_exit(struct scx_sched *sch,
 	return ret;
 }
 
-#define scx_error(sch, fmt, args...)	scx_exit((sch), SCX_EXIT_ERROR, 0, fmt, ##args)
-#define scx_verror(sch, fmt, args)	scx_vexit((sch), SCX_EXIT_ERROR, 0, fmt, args)
-
 #define SCX_HAS_OP(sch, op)	test_bit(SCX_OP_IDX(op), (sch)->has_op)
 
 static long jiffies_delta_msecs(unsigned long at, unsigned long now)
@@ -6350,7 +6345,7 @@ static void scx_disable_irq_workfn(struct irq_work *irq_work)
 	kthread_queue_work(sch->helper, &sch->disable_work);
 }
 
-static bool scx_vexit(struct scx_sched *sch,
+bool scx_vexit(struct scx_sched *sch,
 		      enum scx_exit_kind kind, s64 exit_code,
 		      const char *fmt, va_list args)
 {
diff --git a/kernel/sched/ext_internal.h b/kernel/sched/ext_internal.h
index 5e3b79963d41..fb1a555faaaa 100644
--- a/kernel/sched/ext_internal.h
+++ b/kernel/sched/ext_internal.h
@@ -1352,6 +1352,14 @@ int scx_kfunc_context_filter(const struct bpf_prog *prog, u32 kfunc_id);
 
 bool scx_cpu_valid(struct scx_sched *sch, s32 cpu, const char *where);
 
+bool scx_vexit(struct scx_sched *sch, enum scx_exit_kind kind, s64 exit_code,
+	       const char *fmt, va_list args);
+__printf(4, 5) bool scx_exit(struct scx_sched *sch, enum scx_exit_kind kind,
+			     s64 exit_code, const char *fmt, ...);
+
+#define scx_verror(sch, fmt, args)	scx_vexit((sch), SCX_EXIT_ERROR, 0, fmt, args)
+#define scx_error(sch, fmt, args...)	scx_exit((sch), SCX_EXIT_ERROR, 0, fmt, ##args)
+
 /*
  * Return the rq currently locked from an scx callback, or NULL if no rq is
  * locked.
-- 
2.53.0