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| author | Toke Høiland-Jørgensen <toke@redhat.com> | 2021-06-24 19:06:07 +0300 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2021-06-24 20:46:12 +0300 |
| commit | 7b6ee873ff20c22af355661b241defa7f6ed7582 (patch) | |
| tree | b6da2f486bf7f2f4c65f6bef23aab6793f11a3ff /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | 4eb14e3fc6197b7205069ed4e2b31eafa11a0697 (diff) | |
| download | linux-7b6ee873ff20c22af355661b241defa7f6ed7582.tar.xz | |
netsec: Remove rcu_read_lock() around XDP program invocation
The netsec driver has a rcu_read_lock()/rcu_read_unlock() pair around the
full RX loop, covering everything up to and including xdp_do_flush(). This
is actually the correct behaviour, but because it all happens in a single
NAPI poll cycle (and thus under local_bh_disable()), it is also technically
redundant.
With the addition of RCU annotations to the XDP_REDIRECT map types that
take bh execution into account, lockdep even understands this to be safe,
so there's really no reason to keep the rcu_read_lock() around anymore, so
let's just remove it.
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Cc: Jassi Brar <jaswinder.singh@linaro.org>
Link: https://lore.kernel.org/bpf/20210624160609.292325-18-toke@redhat.com
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions