[PATCH 3/5] sched_ext: make __bpf_ops_sched_ext_ops const

Caleb Sander Mateos posted 5 patches 1 month, 1 week ago
[PATCH 3/5] sched_ext: make __bpf_ops_sched_ext_ops const
Posted by Caleb Sander Mateos 1 month, 1 week ago
Now that struct bpf_struct_ops's cfi_stubs field is a const pointer,
declare the __bpf_ops_sched_ext_ops global variable it points to as
const. This allows the global variable to be placed in readonly memory.

Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
---
 kernel/sched/ext.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c
index 94164f2dec6d..af8250b64f47 100644
--- a/kernel/sched/ext.c
+++ b/kernel/sched/ext.c
@@ -5336,11 +5336,11 @@ static s32 sched_ext_ops__init(void) { return -EINVAL; }
 static void sched_ext_ops__exit(struct scx_exit_info *info) {}
 static void sched_ext_ops__dump(struct scx_dump_ctx *ctx) {}
 static void sched_ext_ops__dump_cpu(struct scx_dump_ctx *ctx, s32 cpu, bool idle) {}
 static void sched_ext_ops__dump_task(struct scx_dump_ctx *ctx, struct task_struct *p) {}
 
-static struct sched_ext_ops __bpf_ops_sched_ext_ops = {
+static const struct sched_ext_ops __bpf_ops_sched_ext_ops = {
 	.select_cpu		= sched_ext_ops__select_cpu,
 	.enqueue		= sched_ext_ops__enqueue,
 	.dequeue		= sched_ext_ops__dequeue,
 	.dispatch		= sched_ext_ops__dispatch,
 	.tick			= sched_ext_ops__tick,
-- 
2.45.2