From: Dmitry Vyukov <dvyu...@google.com> Date: Sat, 20 Mar 2021 15:28:51 +0100
> 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. > 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 <dvyu...@google.com> > Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=211877 > Cc: netdev@vger.kernel.org > Cc: linux-ker...@vger.kernel.org I'd say a sysctl knob is much better than a compile time setting for this. That way stock kernels can be used in these testing scenerios. Thanks.
