linux-kernel - [PATCH bpf-next 9/9] sched

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Message-Id: <20241127-bpf-const-ops-v1-9-a698b8d58680@weissschuh.net>
Date: Wed, 27 Nov 2024 20:15:28 +0100
From: Thomas Weißschuh <linux@...ssschuh.net>
To: "David S. Miller" <davem@...emloft.net>, 
 David Ahern <dsahern@...nel.org>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Simon Horman <horms@...nel.org>, Martin KaFai Lau <martin.lau@...nel.org>, 
 Kui-Feng Lee <thinker.li@...il.com>, Alexei Starovoitov <ast@...nel.org>, 
 Daniel Borkmann <daniel@...earbox.net>, 
 John Fastabend <john.fastabend@...il.com>, 
 Andrii Nakryiko <andrii@...nel.org>, 
 Martin KaFai Lau <martin.lau@...ux.dev>, 
 Eduard Zingerman <eddyz87@...il.com>, Song Liu <song@...nel.org>, 
 Yonghong Song <yonghong.song@...ux.dev>, KP Singh <kpsingh@...nel.org>, 
 Stanislav Fomichev <sdf@...ichev.me>, Hao Luo <haoluo@...gle.com>, 
 Jiri Olsa <jolsa@...nel.org>, Jiri Kosina <jikos@...nel.org>, 
 Benjamin Tissoires <bentiss@...nel.org>, Tejun Heo <tj@...nel.org>, 
 David Vernet <void@...ifault.com>, Ingo Molnar <mingo@...hat.com>, 
 Peter Zijlstra <peterz@...radead.org>, Juri Lelli <juri.lelli@...hat.com>, 
 Vincent Guittot <vincent.guittot@...aro.org>, 
 Dietmar Eggemann <dietmar.eggemann@....com>, 
 Steven Rostedt <rostedt@...dmis.org>, Ben Segall <bsegall@...gle.com>, 
 Mel Gorman <mgorman@...e.de>, Valentin Schneider <vschneid@...hat.com>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, 
 bpf@...r.kernel.org, linux-input@...r.kernel.org, 
 Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH bpf-next 9/9] sched_ext: Constify BPF ops

The BPF core now allows the registration of read-only ops tables,
make use of it.

Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
 kernel/sched/ext.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c
index 7fff1d0454770f5fab3e13708816d56653637ee9..6d3cced2951f61b73e6779edfb62b63c1ab62093 100644
--- a/kernel/sched/ext.c
+++ b/kernel/sched/ext.c
@@ -5914,7 +5914,7 @@ 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,
@@ -5952,7 +5952,7 @@ static struct sched_ext_ops __bpf_ops_sched_ext_ops = {
 	.dump_task		= sched_ext_ops__dump_task,
 };

-static struct bpf_struct_ops bpf_sched_ext_ops = {
+static const struct bpf_struct_ops bpf_sched_ext_ops = {
 	.verifier_ops = &bpf_scx_verifier_ops,
 	.reg = bpf_scx_reg,
 	.unreg = bpf_scx_unreg,

-- 
2.47.1