[PATCH] sched_ext: Documentation: Fix ops table header reference

From: luoliang

Date: Tue Jul 07 2026 - 05:50:59 EST


From: Liang Luo <luoliang@xxxxxxxxxx>

The "Where to Look" and "ABI Instability" sections state that the ops
table is defined in include/linux/sched/ext.h. However, struct
sched_ext_ops is actually defined in kernel/sched/ext/internal.h, along
with the SCX_OPS_* flags; include/linux/sched/ext.h holds the core data
structures (struct sched_ext_entity, struct scx_dispatch_q, ...) and the
DSQ constants. Point the ops table references to the correct header.

Signed-off-by: Liang Luo <luoliang@xxxxxxxxxx>
---
Documentation/scheduler/sched-ext.rst | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/Documentation/scheduler/sched-ext.rst b/Documentation/scheduler/sched-ext.rst
index 4b1ffd03f516..2771ea4cc14a 100644
--- a/Documentation/scheduler/sched-ext.rst
+++ b/Documentation/scheduler/sched-ext.rst
@@ -493,8 +493,9 @@ a freshly woken up task gets on a CPU.
Where to Look
=============

-* ``include/linux/sched/ext.h`` defines the core data structures, ops table
- and constants.
+* ``include/linux/sched/ext.h`` defines the core data structures and
+ constants, while the ops table (``struct sched_ext_ops``) is defined in
+ ``kernel/sched/ext/internal.h``.

* ``kernel/sched/ext/ext.c`` contains sched_ext core implementation and helpers.
The functions prefixed with ``scx_bpf_`` can be called from the BPF
@@ -555,7 +556,8 @@ ABI Instability
===============

The APIs provided by sched_ext to BPF schedulers programs have no stability
-guarantees. This includes the ops table callbacks and constants defined in
+guarantees. This includes the ops table callbacks defined in
+``kernel/sched/ext/internal.h`` and the constants defined in
``include/linux/sched/ext.h``, as well as the ``scx_bpf_`` kfuncs defined in
``kernel/sched/ext/ext.c`` and ``kernel/sched/ext/idle.c``.

--
2.43.0