Re: [PATCH][v3] rtnetlink: add rtnl_lock debug log
From: Cong Wang <hidden>
Date: 2021-05-11 17:01:00
Also in:
linux-arm-kernel, lkml, netdev
On Tue, May 11, 2021 at 4:46 AM Rocco yue [off-list ref] wrote:
From: Rocco Yue <redacted> We often encounter system hangs caused by certain process holding rtnl_lock for a long time. Even if there is a lock detection mechanism in Linux, it is a bit troublesome and affects the system performance. We hope to add a lightweight debugging mechanism for detecting rtnl_lock.
Any reason why this is specific to RTNL lock? To me holding a mutex lock for a long time is problematic for any mutex. I have seen some fs mutex being held for a long time caused many hung tasks in the system. Thanks. _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek