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From: Yonghong Song <yhs@fb.com>
To: <bpf@vger.kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>,
	Andrii Nakryiko <andrii@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>, <kernel-team@fb.com>,
	Martin KaFai Lau <martin.lau@kernel.org>
Subject: [PATCH bpf-next v3 5/7] bpf: Enable sleeptable support for cgrp local storage
Date: Wed, 9 Nov 2022 13:20:10 -0800	[thread overview]
Message-ID: <20221109212010.3215575-1-yhs@fb.com> (raw)
In-Reply-To: <20221109211944.3213817-1-yhs@fb.com>

With proper bpf_rcu_read_lock() support, sleepable support for cgrp local
storage can be enabled as typical use case task->cgroups->dfl_cgrp
can be protected with bpf_rcu_read_lock().

Signed-off-by: Yonghong Song <yhs@fb.com>
---
 kernel/bpf/verifier.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index 2aa140dceb9a..92cd1cf64026 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -12958,10 +12958,11 @@ static int check_map_prog_compatibility(struct bpf_verifier_env *env,
 		case BPF_MAP_TYPE_INODE_STORAGE:
 		case BPF_MAP_TYPE_SK_STORAGE:
 		case BPF_MAP_TYPE_TASK_STORAGE:
+		case BPF_MAP_TYPE_CGRP_STORAGE:
 			break;
 		default:
 			verbose(env,
-				"Sleepable programs can only use array, hash, and ringbuf maps\n");
+				"Sleepable programs can only use array, hash, ringbuf and local storage maps\n");
 			return -EINVAL;
 		}
 
-- 
2.30.2


  parent reply	other threads:[~2022-11-09 21:20 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-09 21:19 [PATCH bpf-next v3 0/7] bpf: Add bpf_rcu_read_lock() support Yonghong Song
2022-11-09 21:19 ` [PATCH bpf-next v3 1/7] compiler_types: Define __rcu as __attribute__((btf_type_tag("rcu"))) Yonghong Song
2022-11-09 21:19 ` [PATCH bpf-next v3 2/7] bpf: Abstract out functions to check sleepable helpers Yonghong Song
2022-11-09 21:20 ` [PATCH bpf-next v3 3/7] bpf: Add kfunc bpf_rcu_read_lock/unlock() Yonghong Song
2022-11-09 21:20 ` [PATCH bpf-next v3 4/7] bpf: Add bpf_rcu_read_lock() verifier support Yonghong Song
2022-11-09 21:20 ` Yonghong Song [this message]
2022-11-09 21:20 ` [PATCH bpf-next v3 6/7] selftests/bpf: Add tests for bpf_rcu_read_lock() Yonghong Song
2022-11-09 21:20 ` [PATCH bpf-next v3 7/7] selftests/bpf: Add rcu_read_lock test to s390x deny list Yonghong Song

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