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authorCong Wang <cong.wang@bytedance.com>2020-12-04 23:59:46 -0800
committerAlexei Starovoitov <ast@kernel.org>2020-12-07 11:53:40 -0800
commite3366884b383073a7edc1bad9634412ae0a22d4e (patch)
tree6c93ef39131e0a70e15c335b14b5e1f46349b3f0 /net/core
parentd9054a1ff585ba01029584ab730efc794603d68f (diff)
lwt_bpf: Replace preempt_disable() with migrate_disable()
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@gmail.com> Signed-off-by: Cong Wang <cong.wang@bytedance.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201205075946.497763-2-xiyou.wangcong@gmail.com
Diffstat (limited to 'net/core')
-rw-r--r--net/core/lwt_bpf.c6
1 files 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;
}