linux-kernel - Re: [PATCH 0/3] cpuidle: small improvements & fixes for menu governor

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Date:	Tue, 03 Nov 2015 22:56:08 -0800
From:	Joe Perches <joe@...ches.com>
To:	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Rik van Riel <riel@...hat.com>, linux-kernel@...r.kernel.org
Cc:	arjan@...ux.intel.com, khilman@...com, len.brown@...el.com,
	daniel.lezcano@...aro.org, javi.merino@....com,
	tuukka.tikkanen@...aro.org
Subject: Re: [PATCH 0/3] cpuidle: small improvements & fixes for menu
 governor

On Wed, 2015-11-04 at 00:03 +0100, Rafael J. Wysocki wrote:
> On 11/3/2015 11:35 PM, Rik van Riel wrote:
> > On 11/03/2015 05:05 PM, Rafael J. Wysocki wrote:
> > > On 10/28/2015 11:46 PM, riel@...hat.com wrote:
> > > > While working on a paravirt cpuidle driver for KVM guests, I
> > > > noticed a number of small logic errors in the menu governor
> > > > code.
> > > > 
> > > > These patches should get rid of some artifacts that can break
> > > > the logic in the menu governor under certain corner cases, and
> > > > make idle state selection work better on CPUs with long C1 exit
> > > > latencies.
> > > > 
> > > > I have not seen any adverse effects with them in my (quick)
> > > > tests. As expected, they do not seem to do much on systems with
> > > > many power states and very low C1 exit latencies and target
> > > > residencies.
> > > > 
> > > Sorry for the trouble, but can you please resend the series with
> > > CCs to
> > > linux-pm@...r.kernel.org?  That will make it way easier to handle
> > > for me.
> > Not a problem. Done.
> > 
> > What change do I need to send in to ensure that the
> > linux-pm mailing list shows up in get_maintainer.pl
> > output?
> > 
> > $ ./scripts/get_maintainer.pl -f drivers/cpuidle/governors/menu.c
> > "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
> > (commit_signer:4/7=57%,authored:1/7=14%,added_lines:2/19=11%,remove
> > d_lines:2/28=7%)
> > Daniel Lezcano <daniel.lezcano@...aro.org>
> > (commit_signer:3/7=43%,authored:1/7=14%,added_lines:1/19=5%)
> > Rik van Riel <riel@...hat.com>
> > (commit_signer:3/7=43%,authored:3/7=43%,added_lines:5/19=26%,remove
> > d_lines:3/28=11%)
> > Len Brown <len.brown@...el.com>
> > (commit_signer:1/7=14%,authored:1/7=14%,added_lines:10/19=53%,remov
> > ed_lines:15/28=54%)
> > "Peter Zijlstra (Intel)" <peterz@...radead.org>
> > (commit_signer:1/7=14%)
> > Javi Merino <javi.merino@....com>
> > (authored:1/7=14%,added_lines:1/19=5%,removed_lines:7/28=25%)
> > linux-kernel@...r.kernel.org (open list)
> > 
> 
> I'm not sure why it doesn't show up in there.
> If you look at MAINTAINERS under CPUIDLE DRIVERS, linux-pm is
> actually listed there.

Because the pattern is just the files in the top level directory
of drivers/cpuidle and not any files in any directory below

>From the MAINTAINERS pattern descriptions:

	F: Files and directories with wildcard patterns.
	   A trailing slash includes all files and subdirectory files.
	   F:	drivers/net/	all files in and below
drivers/net
	   F:	drivers/net/*	all files in drivers/net, but
not below

> Maybe the answer is that get_maintainer.pl needs to be fixed ...

Nope, the MAINTAINERS - CPUIDLE DRIVERS entry does though.

---
 MAINTAINERS | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/MAINTAINERS b/MAINTAINERS
index 77ed3a0..8bd5c7e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3004,7 +3004,7 @@ M:	Daniel Lezcano <daniel.lezcano@...aro.org>
 L:	linux-pm@...r.kernel.org
 S:	Maintained
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git
-F:	drivers/cpuidle/*
+F:	drivers/cpuidle/
 F:	include/linux/cpuidle.h
 
 CPUID/MSR DRIVER

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