Groups > linux.kernel > #1196148

Re: [PATCH tip/core/rcu 02/19] rcu: Remove CONFIG_RCU_CPU_STALL_INFO

From	Josh Triplett <josh@joshtriplett.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH tip/core/rcu 02/19] rcu: Remove CONFIG_RCU_CPU_STALL_INFO
Date	2015-07-30 17:50 +0200
Message-ID	<pRYfL-2Gd-9@gated-at.bofh.it> (permalink)
References	<pNneN-3lN-1@gated-at.bofh.it> <pNneN-3lN-3@gated-at.bofh.it> <pNnot-3xc-9@gated-at.bofh.it> <pRVBf-7gm-5@gated-at.bofh.it> <pRXMK-28D-11@gated-at.bofh.it>
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On Thu, Jul 30, 2015 at 08:13:41AM -0700, Paul E. McKenney wrote:
> On Thu, Jul 30, 2015 at 02:49:55PM +0200, Peter Zijlstra wrote:
> > On Fri, Jul 17, 2015 at 04:29:07PM -0700, Paul E. McKenney wrote:
> > > From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
> > > 
> > > The CONFIG_RCU_CPU_STALL_INFO has been default-y for a couple of
> > > releases with no complaints, so it is time to eliminate this Kconfig
> > > option entirely, so that the long-form RCU CPU stall warnings cannot
> > > be disabled.  This commit does just that.
> > 
> > I would think the tiny people (/me looks @ Josh) would complain about
> > this..
> 
> They might, but if they do, I will point out that CONFIG_RCU_CPU_STALL_INFO
> only has effect for Tree RCU.  And also that RCU CPU stall warnings are
> compiled out unless CONFIG_RCU_TRACE=y, which I suspect they are disabling.

You took the words right out of my mouth. :)

> All that aside, I do appreciate the attention to tininess.

Likewise!
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Re: [PATCH tip/core/rcu 02/19] rcu: Remove CONFIG_RCU_CPU_STALL_INFO "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2015-07-30 17:20 +0200
  Re: [PATCH tip/core/rcu 02/19] rcu: Remove CONFIG_RCU_CPU_STALL_INFO Peter Zijlstra <peterz@infradead.org> - 2015-07-30 17:40 +0200
  Re: [PATCH tip/core/rcu 02/19] rcu: Remove CONFIG_RCU_CPU_STALL_INFO Josh Triplett <josh@joshtriplett.org> - 2015-07-30 17:50 +0200

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