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| author |   Hou Tao <houtao1@huawei.com> | 2022-12-09 09:09:47 +0800 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2022-12-08 17:50:17 -0800 |
| commit | 822ed78fab13d5a54f8b8c030e8c5dc0fcd2cdae (patch) | |
| tree | 8715fbbde0c80e21ce62e7b1e4e71ca279f37e35 /scripts/generate_rust_analyzer.py | |
| parent | bpf: Reuse freed element in free_by_rcu during allocation (diff) | |
| download | wireguard-linux-822ed78fab13d5a54f8b8c030e8c5dc0fcd2cdae.tar.xz wireguard-linux-822ed78fab13d5a54f8b8c030e8c5dc0fcd2cdae.zip | |
bpf: Skip rcu_barrier() if rcu_trace_implies_rcu_gp() is true
If there are pending rcu callback, free_mem_alloc() will use
rcu_barrier_tasks_trace() and rcu_barrier() to wait for the pending
__free_rcu_tasks_trace() and __free_rcu() callback.
If rcu_trace_implies_rcu_gp() is true, there will be no pending
__free_rcu(), so it will be OK to skip rcu_barrier() as well.
Acked-by: Yonghong Song <yhs@fb.com>
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/20221209010947.3130477-3-houtao@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'scripts/generate_rust_analyzer.py')
0 files changed, 0 insertions, 0 deletions