drop_monitor: Document scope of spinlock

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While 'per_cpu_dm_data' is a per-CPU variable, its 'skb' and
'send_timer' fields can be accessed concurrently by the CPU sending the
netlink notification to user space from the workqueue and the CPU
tracing kfree_skb(). This spinlock is meant to protect against that.

Document its scope and suppress the checkpatch message "spinlock_t
definition without comment".

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Ido Schimmel 2019-08-06 16:19:53 +03:00 • committed by David S. Miller

parent dbf896b70d

commit 01921d53f8

1 changed files with 1 additions and 1 deletions

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net/core/drop_monitor.c

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