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Date: Fri, 8 Apr 2022 17:42:45 -0400 From: Steven Rostedt <rostedt@...dmis.org> To: Kalesh Singh <kaleshsingh@...gle.com> Cc: paulmck@...nel.org, Joel Fernandes <joel@...lfernandes.org>, Suren Baghdasaryan <surenb@...gle.com>, kernel-team <kernel-team@...roid.com>, Tejun Heo <tj@...nel.org>, Tim Murray <timmurray@...gle.com>, Wei Wang <wvw@...gle.com>, Kyle Lin <kylelin@...gle.com>, Chunwei Lu <chunweilu@...gle.com>, Lulu Wang <luluw@...gle.com>, Frederic Weisbecker <frederic@...nel.org>, Neeraj Upadhyay <quic_neeraju@...cinc.com>, Josh Triplett <josh@...htriplett.org>, Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, Lai Jiangshan <jiangshanlai@...il.com>, rcu <rcu@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH v2] EXP rcu: Move expedited grace period (GP) work to RT kthread_worker On Fri, 8 Apr 2022 10:53:53 -0700 Kalesh Singh <kaleshsingh@...gle.com> wrote: > If PREEMT_RT systems don’t disable expedited grace periods, we can > remove default off for those. Steve? Yep, commit 36221e109eb20 ("rcu: Enable rcu_normal_after_boot unconditionally for RT") is still there. OK, that explains it. I missed that change, so I didn't see the relation to PREEMPT_RT. It wasn't described in the change log nor was there any comment in the kconfig to say why it was special. Perhaps that should be added for those that don't know all this tribal knowledge ;-) -- Steve
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