git: f1f19d09d062 - stable/15 - sched: rename sched_schedcpu() to sched_sysinit()

The branch stable/15 has been updated by mchoo:

URL: https://cgit.FreeBSD.org/src/commit/?id=f1f19d09d0628b38642e40542b5a914793cee63a

commit f1f19d09d0628b38642e40542b5a914793cee63a
Author:     Minsoo Choo <mchoo@FreeBSD.org>
AuthorDate: 2026-09-05 01:02:07 +0000
Commit:     Minsoo Choo <mchoo@FreeBSD.org>
CommitDate: 2026-10-02 15:34:32 +0000

    sched: rename sched_schedcpu() to sched_sysinit()
    
    sched_schedcpu() is called only during SYSINIT to start kthread that
    calls schedcpu() every second in 4BSD, but its name implies it's doing
    what 4BSD's schedcpu() does. Rename this function to sched_sysinit() to
    mark that schedulers can use it for its own SYSINIT routine. Note that
    their SYSINIT routine does not necessarily need to be similar to 4BSD's
    decay in schedcpu().
    
    The scheduler.9 man page is planned to be rewritten from scratch, so no
    change to it for now.
    
    Reviewed by:    olce
    Approved by:    olce (mentor)
    MFC after:      2 weeks
    Sponsored by:   FreeBSD Foundation
    Differential Revision:  https://reviews.freebsd.org/D59437
    
    (cherry picked from commit 962125aef24b55b4bb8808dcab335abc4b3f0d4e)
---
 sys/kern/sched_4bsd.c | 4 ++--
 sys/kern/sched_shim.c | 6 +++---
 sys/kern/sched_ule.c  | 4 ++--
 sys/sys/sched.h       | 3 ++-
 4 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/sys/kern/sched_4bsd.c b/sys/kern/sched_4bsd.c
index 61b8c0e68691..5f0246323dea 100644
--- a/sys/kern/sched_4bsd.c
+++ b/sys/kern/sched_4bsd.c
@@ -161,7 +161,7 @@ static struct kproc_desc sched_kp = {
 };
 
 static void
-sched_4bsd_schedcpu(void)
+sched_4bsd_sysinit(void)
 {
 	kproc_start(&sched_kp);
 }
@@ -1889,7 +1889,7 @@ struct sched_instance sched_4bsd_instance = {
 	SLOT(init_ap),
 	SLOT(setup),
 	SLOT(initticks),
-	SLOT(schedcpu),
+	SLOT(sysinit),
 #undef SLOT
 };
 DECLARE_SCHEDULER(fourbsd_sched_selector, "4BSD", &sched_4bsd_instance);
diff --git a/sys/kern/sched_shim.c b/sys/kern/sched_shim.c
index 2ff97a5774e1..9935c4e40aa8 100644
--- a/sys/kern/sched_shim.c
+++ b/sys/kern/sched_shim.c
@@ -181,11 +181,11 @@ SYSINIT(sched_initticks, SI_SUB_CLOCKS, SI_ORDER_THIRD, sched_initticks,
     NULL);
 
 static void
-sched_schedcpu(void)
+sched_sysinit(void)
 {
-	active_sched->schedcpu();
+	active_sched->sysinit();
 }
-SYSINIT(schedcpu, SI_SUB_LAST, SI_ORDER_FIRST, sched_schedcpu, NULL);
+SYSINIT(sched_sysinit, SI_SUB_LAST, SI_ORDER_FIRST, sched_sysinit, NULL);
 
 SYSCTL_NODE(_kern, OID_AUTO, sched, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
     "Scheduler");
diff --git a/sys/kern/sched_ule.c b/sys/kern/sched_ule.c
index ad52d749593f..fd37672b5d48 100644
--- a/sys/kern/sched_ule.c
+++ b/sys/kern/sched_ule.c
@@ -3347,7 +3347,7 @@ sched_ule_clear_tdname(struct thread *td)
 }
 
 static void
-sched_ule_schedcpu(void)
+sched_ule_sysinit(void)
 {
 }
 
@@ -3465,7 +3465,7 @@ struct sched_instance sched_ule_instance = {
 	SLOT(init_ap),
 	SLOT(setup),
 	SLOT(initticks),
-	SLOT(schedcpu),
+	SLOT(sysinit),
 #undef SLOT
 };
 DECLARE_SCHEDULER(ule_sched_selector, "ULE", &sched_ule_instance);
diff --git a/sys/sys/sched.h b/sys/sys/sched.h
index 9d8268d43d63..e4cf848cf641 100644
--- a/sys/sys/sched.h
+++ b/sys/sys/sched.h
@@ -323,7 +323,8 @@ struct sched_instance {
 	void	(*init_ap)(void);
 	void	(*setup)(void);
 	void	(*initticks)(void);
-	void	(*schedcpu)(void);
+	/* Scheduler init, to be called only from 'sched_shim.c'. */
+	void	(*sysinit)(void);
 };
 
 extern const struct sched_instance *active_sched;