diff options
| author |   Hou Tao <houtao1@huawei.com> | 2023-10-20 21:31:56 +0800 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2023-10-20 10:12:54 -0700 |
| commit | 394e6869f0185e89cb815db29bf819474df858ae (patch) | |
| tree | b01d8ee6e2f3b518a0db7e12644a3fd7490c1e87 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | selftests/bpf: Make linked_list failure test more robust (diff) | |
| download | wireguard-linux-394e6869f0185e89cb815db29bf819474df858ae.tar.xz wireguard-linux-394e6869f0185e89cb815db29bf819474df858ae.zip | |
mm/percpu.c: don't acquire pcpu_lock for pcpu_chunk_addr_search()
There is no need to acquire pcpu_lock for pcpu_chunk_addr_search():
1) both pcpu_first_chunk & pcpu_reserved_chunk must have been
initialized before the invocation of free_percpu().
2) The dynamically-created chunk must be valid before the per-cpu
pointers allocated from it are freed.
So acquire pcpu_lock() after the invocation of pcpu_chunk_addr_search().
Acked-by: Dennis Zhou <dennis@kernel.org>
Signed-off-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/20231020133202.4043247-2-houtao@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions