linux/Documentation/admin-guide/sysctl
Dmitry Vyukov 5aa3afe107 net: make unregister netdev warning timeout configurable
netdev_wait_allrefs() issues a warning if refcount does not drop to 0
after 10 seconds. While 10 second wait generally should not happen
under normal workload in normal environment, it seems to fire falsely
very often during fuzzing and/or in qemu emulation (~10x slower).
At least it's not possible to understand if it's really a false
positive or not. Automated testing generally bumps all timeouts
to very high values to avoid flake failures.
Add net.core.netdev_unregister_timeout_secs sysctl to make
the timeout configurable for automated testing systems.
Lowering the timeout may also be useful for e.g. manual bisection.
The default value matches the current behavior.

Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=211877
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-23 17:22:50 -07:00
..
abi.rst Documentation: fix multiple typos found in the admin-guide subdirectory 2020-12-08 10:27:56 -07:00
fs.rst Update Documentation/admin-guide/sysctl/fs.rst 2021-01-28 15:45:10 -07:00
index.rst docs: admin-guide: move sysctl directory to it 2019-07-15 11:03:01 -03:00
kernel.rst docs: Update documentation to reflect what TAINT_CPU_OUT_OF_SPEC means 2020-12-08 10:53:58 -07:00
net.rst net: make unregister netdev warning timeout configurable 2021-03-23 17:22:50 -07:00
sunrpc.rst docs: admin-guide: move sysctl directory to it 2019-07-15 11:03:01 -03:00
user.rst time/namespace: Add max_time_namespaces ucount 2020-04-07 12:37:21 +02:00
vm.rst mm/vmscan: restore zone_reclaim_mode ABI 2021-02-24 13:38:34 -08:00