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Date: Wed, 16 Jul 2014 21:01:52 -0400 From: Pranith Kumar <bobby.prani@...il.com> To: Lai Jiangshan <laijs@...fujitsu.com> CC: paulmck@...ux.vnet.ibm.com, josh@...htriplett.org, Steven Rostedt <rostedt@...dmis.org>, Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, "open list:READ-COPY UPDATE..." <linux-kernel@...r.kernel.org> Subject: Re: [PATCH 2/3] rcu: Remove stale comment in tree.c On 07/16/2014 08:55 PM, Lai Jiangshan wrote: > On 07/16/2014 09:29 PM, Pranith Kumar wrote: >> On 07/16/2014 08:47 AM, Paul E. McKenney wrote: >>> On Tue, Jul 15, 2014 at 06:57:59PM -0400, Pranith Kumar wrote: >>>> >>>> On 07/15/2014 06:53 PM, josh@...htriplett.org wrote: >>>>> On Tue, Jul 15, 2014 at 06:31:48PM -0400, Pranith Kumar wrote: >>>>>> This commit removes a stale comment in rcu/tree.c. >>>>>> FYI, an updated comment exists a few lines below this. >>>>>> >>>>>> Signed-off-by: Pranith Kumar <bobby.prani@...il.com> >>>>> In general, when removing a stale comment, I'd suggest explaining why >>>>> the comment is stale. Was code removed without removing the >>>>> corresponding comment, or was code changed such that the comment no >>>>> longer applies, or...? >>>> >>>> I guess it was left out when code was moved around previously. And I did mention that an updated comment is there a few lines below. >>>> >>>> For reference this is the new comment which is below the old comment, they mean the same :) >>>> >>>> /* Remove the outgoing CPU from the masks in the rcu_node hierarchy. */ >>> >>> Indeed that is the case. >>> >>> Please update the commit log with this explanation and resend. >>> >>> Thanx, Paul >>> >> >> Please find the updated patch below. >> >> -- >> Pranith >> >> From: Pranith Kumar <bobby.prani@...il.com> >> Date: Mon, 14 Jul 2014 16:01:05 -0400 >> Subject: [PATCH 2/3] rcu: Remove stale comment in tree.c >> >> This commit removes a stale comment in rcu/tree.c which was left out when some >> code was moved around previously. > > Which commit caused this leftover comment? Could you mention that commit in > your changlog? > > 12BitsCmmtID ("commit title...") > Sure, please find an updated patch with Josh Triplett's sign-off added: From: Pranith Kumar <bobby.prani@...il.com> Date: Mon, 14 Jul 2014 16:01:05 -0400 Subject: [PATCH 2/3] rcu: Remove stale comment in tree.c This commit removes a stale comment in rcu/tree.c which was left out in commit 2036d94a7b61ca5032ce (rcu: Rework detection of use of RCU by offline CPUs) For reference, the following updated comment exists a few lines below this which means the same. /* Remove the outgoing CPU from the masks in the rcu_node hierarchy. */ Signed-off-by: Pranith Kumar <bobby.prani@...il.com> Reviewed-by: Joe Tripplett <josh@...htriplett.org> --- kernel/rcu/tree.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index a1abaa8..e67246e 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -2211,8 +2211,6 @@ static void rcu_cleanup_dead_cpu(int cpu, struct rcu_state *rsp) /* Adjust any no-longer-needed kthreads. */ rcu_boost_kthread_setaffinity(rnp, -1); - /* Remove the dead CPU from the bitmasks in the rcu_node hierarchy. */ - /* Exclude any attempts to start a new grace period. */ mutex_lock(&rsp->onoff_mutex); raw_spin_lock_irqsave(&rsp->orphan_lock, flags); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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