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| author |   Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2024-06-20 15:21:56 +0200 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2024-06-24 16:41:22 -0700 |
| commit | ebad6d0334793f16a16e5320182f665292a31e0c (patch) | |
| tree | 5f9bc37dcc2190e3cb37cde94f9b84ad2e5b8d59 /include/linux/netdevice_xmit.h | |
| parent | net/tcp_sigpool: Use nested-BH locking for sigpool_scratch. (diff) | |
| download | wireguard-linux-ebad6d0334793f16a16e5320182f665292a31e0c.tar.xz wireguard-linux-ebad6d0334793f16a16e5320182f665292a31e0c.zip | |
net/ipv4: Use nested-BH locking for ipv4_tcp_sk.
ipv4_tcp_sk is a per-CPU variable and relies on disabled BH for its
locking. Without per-CPU locking in local_bh_disable() on PREEMPT_RT
this data structure requires explicit locking.
Make a struct with a sock member (original ipv4_tcp_sk) and a
local_lock_t and use local_lock_nested_bh() for locking. This change
adds only lockdep coverage and does not alter the functional behaviour
for !PREEMPT_RT.
Cc: David Ahern <dsahern@kernel.org>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: https://patch.msgid.link/20240620132727.660738-7-bigeasy@linutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/linux/netdevice_xmit.h')
0 files changed, 0 insertions, 0 deletions