On Wed, Sep 14, 2022 at 8:17 PM Paul E. McKenney wrote:
>
> On Wed, Sep 14, 2022 at 10:15:28AM +0800, Zhouyi Zhou wrote:
> > During the cpu offlining, the sub functions of xive_teardown_cpu will
> > call __lock_acquire when CONFIG_LOCKDEP=y. The latter function will
> > travel RCU protected list,
On Wed, Sep 14, 2022 at 10:15:28AM +0800, Zhouyi Zhou wrote:
> During the cpu offlining, the sub functions of xive_teardown_cpu will
> call __lock_acquire when CONFIG_LOCKDEP=y. The latter function will
> travel RCU protected list, so "WARNING: suspicious RCU usage" will be
> triggered.
>
> Try to
From: Zhouyi Zhou
During the cpu offlining, the sub functions of xive_teardown_cpu will
call __lock_acquire when CONFIG_LOCKDEP=y. The latter function will
travel RCU protected list, so "WARNING: suspicious RCU usage" will be
triggered.
Try to protect cpu offlining by RCU offline lock.
Tested o
During the cpu offlining, the sub functions of xive_teardown_cpu will
call __lock_acquire when CONFIG_LOCKDEP=y. The latter function will
travel RCU protected list, so "WARNING: suspicious RCU usage" will be
triggered.
Try to protect cpu offlining by RCU offline lock.
Tested on PPC VM of Open Sou
