From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161461AbbKFMGv (ORCPT ); Fri, 6 Nov 2015 07:06:51 -0500 Received: from mailout4.w1.samsung.com ([210.118.77.14]:51929 "EHLO mailout4.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161157AbbKFMDg (ORCPT ); Fri, 6 Nov 2015 07:03:36 -0500 X-AuditID: cbfec7f4-f79c56d0000012ee-de-563c9716f4bb From: Arseniy Krasnov To: linux@arm.linux.org.uk, mingo@redhat.com, peterz@infradead.org Cc: a.krasnov@samsung.com, v.tyrtov@samsung.com, s.rogachev@samsung.com, linux-kernel@vger.kernel.org, Tarek Dakhran , Sergey Dyasly , Dmitriy Safonov , Ilya Maximets Subject: [PATCH 02/13] hperf_hmp: introduce hew domain flag. Date: Fri, 06 Nov 2015 15:02:36 +0300 Message-id: <1446811367-23783-3-git-send-email-a.krasnov@samsung.com> X-Mailer: git-send-email 1.9.1 In-reply-to: <1446811367-23783-1-git-send-email-a.krasnov@samsung.com> References: <1446811367-23783-1-git-send-email-a.krasnov@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrJLMWRmVeSWpSXmKPExsVy+t/xK7pi023CDN7PlbaY91nQ4tPKp2wW V9p/sltc3jWHzeL2ZV6LSwcWMFkc7z3AZDF5tpTFu63XWC3WPz/FaDF1xg92B26PluYeNo/N K7Q8Dr7bw+Txft9VNo++LasYPT5vkgtgi+KySUnNySxLLdK3S+DK2HbsG2vBPeGKn/s2MDUw bhLoYuTkkBAwkXhw8DALhC0mceHeerYuRi4OIYGljBL9p18xQTjtTBIHp58Hq2IT0JX4uXEL G4gtIuAk0fPsLCOIzSwwmUliw9c0EFtYwEbizrs2sDiLgKrEi2WtzCA2r4CrxKUbzawQ2+Qk Th6bDGZzCrhJdHTdZgexhYBqOs6+Y5nAyLuAkWEVo2hqaXJBcVJ6rqFecWJucWleul5yfu4m RkgAftnBuPiY1SFGAQ5GJR7eG0usw4RYE8uKK3MPMUpwMCuJ8Mox24QJ8aYkVlalFuXHF5Xm pBYfYpTmYFES5527632IkEB6YklqdmpqQWoRTJaJg1OqgVFwjXbqnvsMz9wjvwYffjA3Os7m eU2f8qFP/3KnzROyn2+69mRLdba/u//PwhMr769sSjFfu1eFe1HT1N+6YjEP1x782Wnk+H7v sieJdy8d+u2w5lqB/JqOkImu72fVzVaf+WXalZJ9ap4HLqTVsTYKmhxIcJu6+Hu0YcOhX5V7 vrN3L67jc1BXYinOSDTUYi4qTgQATdHq2zwCAAA= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org New scheduler domain type: HMP. Each big.LITTLE cluster is detected by scheduler as HMP domain. HPERF_HMP logic works between two HMP domains, the default CFS logic, in turn, works inside the HMP domain. Signed-off-by: Tarek Dakhran Signed-off-by: Sergey Dyasly Signed-off-by: Dmitriy Safonov Signed-off-by: Arseniy Krasnov Signed-off-by: Ilya Maximets --- arch/arm/kernel/topology.c | 6 +++++- include/linux/sched.h | 4 ++++ kernel/sched/core.c | 9 ++++++++- 3 files changed, 17 insertions(+), 2 deletions(-) diff --git a/arch/arm/kernel/topology.c b/arch/arm/kernel/topology.c index 08b7847..7fcc5fe 100644 --- a/arch/arm/kernel/topology.c +++ b/arch/arm/kernel/topology.c @@ -285,7 +285,11 @@ static struct sched_domain_topology_level arm_topology[] = { { cpu_corepower_mask, cpu_corepower_flags, SD_INIT_NAME(GMC) }, { cpu_coregroup_mask, cpu_core_flags, SD_INIT_NAME(MC) }, #endif - { cpu_cpu_mask, SD_INIT_NAME(DIE) }, + { cpu_cpu_mask, +#ifdef CONFIG_HPERF_HMP + .flags = SD_HMP_BALANCE, +#endif + SD_INIT_NAME(DIE)}, { NULL, }, }; diff --git a/include/linux/sched.h b/include/linux/sched.h index b7b9501..eb084df 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -990,6 +990,10 @@ extern void wake_up_q(struct wake_q_head *head); #define SD_OVERLAP 0x2000 /* sched_domains of this level overlap */ #define SD_NUMA 0x4000 /* cross-node balancing */ +#ifdef CONFIG_HPERF_HMP +#define SD_HMP_BALANCE 0x8000 /* Use HMP load balancing algorithm */ +#endif + #ifdef CONFIG_SCHED_SMT static inline int cpu_smt_flags(void) { diff --git a/kernel/sched/core.c b/kernel/sched/core.c index bcd214e..16092e0 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -6410,6 +6410,9 @@ sd_init(struct sched_domain_topology_level *tl, int cpu) | 0*SD_PREFER_SIBLING | 0*SD_NUMA | sd_flags +#ifdef CONFIG_HPERF_HMP + | (tl->flags & SD_HMP_BALANCE) +#endif , .last_balance = jiffies, @@ -6472,7 +6475,11 @@ static struct sched_domain_topology_level default_topology[] = { #ifdef CONFIG_SCHED_MC { cpu_coregroup_mask, cpu_core_flags, SD_INIT_NAME(MC) }, #endif - { cpu_cpu_mask, SD_INIT_NAME(DIE) }, + { cpu_cpu_mask, +#ifdef CONFIG_HPERF_HMP + .flags = SD_HMP_BALANCE, +#endif + SD_INIT_NAME(DIE)}, { NULL, }, }; -- 1.9.1