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| author |   Eric Dumazet <edumazet@google.com> | 2024-05-03 19:20:57 +0000 |
|---|---|---|
| committer |   Paolo Abeni <pabeni@redhat.com> | 2024-05-07 11:14:50 +0200 |
| commit | 6890ab31d1a35444741e6150db19d64797db2919 (patch) | |
| tree | 9f0e4ae240841eb23698a9c4e45115929997b525 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | rtnetlink: do not depend on RTNL for many attributes (diff) | |
| download | wireguard-linux-6890ab31d1a35444741e6150db19d64797db2919.tar.xz wireguard-linux-6890ab31d1a35444741e6150db19d64797db2919.zip | |
rtnetlink: do not depend on RTNL in rtnl_fill_proto_down()
Change dev_change_proto_down() and dev_change_proto_down_reason()
to write once on dev->proto_down and dev->proto_down_reason.
Then rtnl_fill_proto_down() can use READ_ONCE() annotations
and run locklessly.
rtnl_proto_down_size() should assume worst case,
because readng dev->proto_down_reason multiple
times would be racy without RTNL in the future.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions