From: kbuild test robot <lkp@intel.com>
To: Arseniy Krasnov <a.krasnov@samsung.com>
Cc: kbuild-all@01.org, linux@arm.linux.org.uk, mingo@redhat.com,
peterz@infradead.org, a.krasnov@samsung.com,
v.tyrtov@samsung.com, s.rogachev@samsung.com,
linux-kernel@vger.kernel.org,
Tarek Dakhran <t.dakhran@samsung.com>,
Sergey Dyasly <s.dyasly@samsung.com>,
Dmitriy Safonov <d.safonov@partner.samsung.com>,
Ilya Maximets <i.maximets@samsung.com>
Subject: Re: [PATCH 11/13] hperf_hmp: task CPU selection logic.
Date: Fri, 6 Nov 2015 20:29:11 +0800 [thread overview]
Message-ID: <201511062008.1UU7RIEf%fengguang.wu@intel.com> (raw)
In-Reply-To: <1446811367-23783-12-git-send-email-a.krasnov@samsung.com>
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Hi Arseniy,
[auto build test WARNING on tip/sched/core]
[also build test WARNING on v4.3 next-20151106]
url: https://github.com/0day-ci/linux/commits/Arseniy-Krasnov/High-performance-balancing-logic-for-big-LITTLE/20151106-200901
config: x86_64-randconfig-x018-11051832 (attached as .config)
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64
All warnings (new ones prefixed by >>):
kernel/sched/fair.c: In function 'select_task_rq_fair':
>> kernel/sched/fair.c:5159:6: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
if (sd_flag & SD_BALANCE_WAKE) /* XXX always ? */
^
vim +/else +5159 kernel/sched/fair.c
29cd8bae kernel/sched_fair.c Peter Zijlstra 2009-09-17 5143 break;
f03542a7 kernel/sched/fair.c Alex Shi 2012-07-26 5144 }
29cd8bae kernel/sched_fair.c Peter Zijlstra 2009-09-17 5145
f03542a7 kernel/sched/fair.c Alex Shi 2012-07-26 5146 if (tmp->flags & sd_flag)
c88d5910 kernel/sched_fair.c Peter Zijlstra 2009-09-10 5147 sd = tmp;
63b0e9ed kernel/sched/fair.c Mike Galbraith 2015-07-14 5148 else if (!want_affine)
63b0e9ed kernel/sched/fair.c Mike Galbraith 2015-07-14 5149 break;
c88d5910 kernel/sched_fair.c Peter Zijlstra 2009-09-10 5150 }
4ae7d5ce kernel/sched_fair.c Ingo Molnar 2008-03-19 5151
63b0e9ed kernel/sched/fair.c Mike Galbraith 2015-07-14 5152 if (affine_sd) {
63b0e9ed kernel/sched/fair.c Mike Galbraith 2015-07-14 5153 sd = NULL; /* Prefer wake_affine over balance flags */
63b0e9ed kernel/sched/fair.c Mike Galbraith 2015-07-14 5154 if (cpu != prev_cpu && wake_affine(affine_sd, p, sync))
63b0e9ed kernel/sched/fair.c Mike Galbraith 2015-07-14 5155 new_cpu = cpu;
8b911acd kernel/sched_fair.c Mike Galbraith 2010-03-11 5156 }
3b640894 kernel/sched_fair.c Peter Zijlstra 2009-09-16 5157
63b0e9ed kernel/sched/fair.c Mike Galbraith 2015-07-14 5158 if (!sd) {
63b0e9ed kernel/sched/fair.c Mike Galbraith 2015-07-14 @5159 if (sd_flag & SD_BALANCE_WAKE) /* XXX always ? */
9b7aaf11 kernel/sched/fair.c Arseniy Krasnov 2015-11-06 5160 if (IS_ENABLED(CONFIG_HPERF_HMP) && sync)
9b7aaf11 kernel/sched/fair.c Arseniy Krasnov 2015-11-06 5161 new_cpu = prev_cpu;
9b7aaf11 kernel/sched/fair.c Arseniy Krasnov 2015-11-06 5162 else
9b7aaf11 kernel/sched/fair.c Arseniy Krasnov 2015-11-06 5163 new_cpu = select_idle_sibling(p, prev_cpu);
9b7aaf11 kernel/sched/fair.c Arseniy Krasnov 2015-11-06 5164 } else {
9b7aaf11 kernel/sched/fair.c Arseniy Krasnov 2015-11-06 5165 #ifdef CONFIG_HPERF_HMP
9b7aaf11 kernel/sched/fair.c Arseniy Krasnov 2015-11-06 5166 new_cpu = hmp_select_task_rq_fair(p);
9b7aaf11 kernel/sched/fair.c Arseniy Krasnov 2015-11-06 5167 #else
:::::: The code at line 5159 was first introduced by commit
:::::: 63b0e9edceec10fa41ec33393a1515a5ff444277 sched/fair: Beef up wake_wide()
:::::: TO: Mike Galbraith <umgwanakikbuti@gmail.com>
:::::: CC: Ingo Molnar <mingo@kernel.org>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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next prev parent reply other threads:[~2015-11-06 12:30 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-06 12:02 [PATCH 00/13] High performance balancing logic for big.LITTLE Arseniy Krasnov
2015-11-06 12:02 ` [PATCH 01/13] hperf_hmp: add new config for arm and arm64 Arseniy Krasnov
2015-11-06 12:02 ` [PATCH 02/13] hperf_hmp: introduce hew domain flag Arseniy Krasnov
2015-11-06 12:02 ` [PATCH 03/13] hperf_hmp: add sched domains initialization Arseniy Krasnov
2015-11-06 12:02 ` [PATCH 04/13] hperf_hmp: scheduler initialization routines Arseniy Krasnov
2015-11-06 12:02 ` [PATCH 05/13] hperf_hmp: introduce druntime metric Arseniy Krasnov
2015-11-06 12:02 ` [PATCH 06/13] hperf_hmp: is_hmp_imbalance introduced Arseniy Krasnov
2015-11-06 12:02 ` [PATCH 07/13] hperf_hmp: migration auxiliary functions Arseniy Krasnov
2015-11-06 13:03 ` kbuild test robot
2015-11-06 12:02 ` [PATCH 08/13] hperf_hmp: swap tasks function Arseniy Krasnov
2015-11-06 12:02 ` [PATCH 09/13] hperf_hmp: one way balancing function Arseniy Krasnov
2015-11-06 12:02 ` [PATCH 10/13] hperf_hmp: idle pull function Arseniy Krasnov
2015-11-06 12:02 ` [PATCH 11/13] hperf_hmp: task CPU selection logic Arseniy Krasnov
2015-11-06 12:29 ` kbuild test robot [this message]
2015-11-06 12:02 ` [PATCH 12/13] hperf_hmp: rest of logic Arseniy Krasnov
2015-11-06 12:02 ` [PATCH 13/13] hperf_hmp: cpufreq routines Arseniy Krasnov
2015-11-07 9:52 ` [PATCH 00/13] High performance balancing logic for big.LITTLE Peter Zijlstra
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