From: Cong Wang <cong.wang@xxxxxxxxxxxxx>
migrate_disable() is just a wrapper for preempt_disable() in
non-RT kernel. It is safe to replace it, and RT kernel will
benefit.
Note that it is introduced since Feb 2020.
Suggested-by: Alexei Starovoitov <alexei.starovoitov@xxxxxxxxx>
Signed-off-by: Cong Wang <cong.wang@xxxxxxxxxxxxx>
---
net/core/lwt_bpf.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/core/lwt_bpf.c b/net/core/lwt_bpf.c
index 4f3cb7c15ddf..2f7940bcf715 100644
--- a/net/core/lwt_bpf.c
+++ b/net/core/lwt_bpf.c
@@ -39,10 +39,10 @@ static int run_lwt_bpf(struct sk_buff *skb, struct bpf_lwt_prog *lwt,
{
int ret;
- /* Preempt disable and BH disable are needed to protect per-cpu
+ /* Migration disable and BH disable are needed to protect per-cpu
* redirect_info between BPF prog and skb_do_redirect().
*/
- preempt_disable();
+ migrate_disable();
local_bh_disable();
bpf_compute_data_pointers(skb);
ret = bpf_prog_run_save_cb(lwt->prog, skb);
@@ -78,7 +78,7 @@ static int run_lwt_bpf(struct sk_buff *skb, struct bpf_lwt_prog *lwt,
}
local_bh_enable();
- preempt_enable();
+ migrate_enable();
return ret;
}
--
2.25.1
