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| author | Eric Dumazet <edumazet@google.com> | 2024-09-05 08:49:09 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-09-06 18:24:59 -0700 |
| commit | 9a95eedc81deb86af1ac56f2c2bfe8306b27b82a (patch) | |
| tree | c12e40e9ded07ea80218166dbc7820eeec345764 /net/unix/af_unix.c | |
| parent | c6a1739778949d5fdfbb1443b41acf5c43879283 (diff) | |
netpoll: remove netpoll_srcu
netpoll_srcu is currently used from netpoll_poll_disable() and
__netpoll_cleanup()
Both functions run under RTNL, using netpoll_srcu adds confusion
and no additional protection.
Moreover the synchronize_srcu() call in __netpoll_cleanup() is
performed before clearing np->dev->npinfo, which violates RCU rules.
After this patch, netpoll_poll_disable() and netpoll_poll_enable()
simply use rtnl_dereference().
This saves a big chunk of memory (more than 192KB on platforms
with 512 cpus)
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Breno Leitao <leitao@debian.org>
Link: https://patch.msgid.link/20240905084909.2082486-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions