[PATCH bpf-next 6/7] bpf: use rcu_migrate_* for bpf_prog_run_array_cg()

[Menglong Dong]

Replace the migrate_disable/migrate_enable with
rcu_migrate_disable/rcu_migrate_enable in bpf_prog_run_array_cg to obtain
better performance when PREEMPT_RCU is not enabled.

Signed-off-by: Menglong Dong <dongml2@xxxxxxxxxxxxxxx>
---
 kernel/bpf/cgroup.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/bpf/cgroup.c b/kernel/bpf/cgroup.c
index 180b630279b9..694635699d46 100644
--- a/kernel/bpf/cgroup.c
+++ b/kernel/bpf/cgroup.c
@@ -71,7 +71,7 @@ bpf_prog_run_array_cg(const struct cgroup_bpf *cgrp,
 	u32 func_ret;
 
 	run_ctx.retval = retval;
-	migrate_disable();
+	rcu_migrate_disable();
 	rcu_read_lock();
 	array = rcu_dereference(cgrp->effective[atype]);
 	item = &array->items[0];
@@ -89,7 +89,7 @@ bpf_prog_run_array_cg(const struct cgroup_bpf *cgrp,
 	}
 	bpf_reset_run_ctx(old_run_ctx);
 	rcu_read_unlock();
-	migrate_enable();
+	rcu_migrate_enable();
 	return run_ctx.retval;
 }
 
-- 
2.50.1