From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e28smtp07.in.ibm.com (e28smtp07.in.ibm.com [125.16.236.7]) (using TLSv1.2 with cipher CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3r88dd5400zDqCW for ; Tue, 17 May 2016 17:50:45 +1000 (AEST) Received: from localhost by e28smtp07.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 17 May 2016 13:20:42 +0530 Received: from d28relay07.in.ibm.com (d28relay07.in.ibm.com [9.184.220.158]) by d28dlp01.in.ibm.com (Postfix) with ESMTP id 6FC5EE005E for ; Tue, 17 May 2016 13:23:51 +0530 (IST) Received: from d28av01.in.ibm.com (d28av01.in.ibm.com [9.184.220.63]) by d28relay07.in.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u4H7od3G31326298 for ; Tue, 17 May 2016 13:20:40 +0530 Received: from d28av01.in.ibm.com (localhost [127.0.0.1]) by d28av01.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u4H7oWnx016651 for ; Tue, 17 May 2016 13:20:39 +0530 From: Pan Xinhui To: linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, linuxppc-dev@lists.ozlabs.org Cc: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au, peterz@infradead.org, mingo@redhat.com, paulmck@linux.vnet.ibm.com, waiman.long@hpe.com, mnipxh@163.com, boqun.feng@gmail.com, Pan Xinhui Subject: [PATCH v3 0/6] powerpc use pv-qpsinlock instead of spinlock Date: Tue, 17 May 2016 15:49:41 +0800 Message-Id: <1463471387-5115-1-git-send-email-xinhui.pan@linux.vnet.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , change fome v1: separate into 6 pathes from one patch some minor code changes. benchmark test results are below. run 3 tests on pseries IBM,8408-E8E with 32cpus, 64GB memory perf bench futex hash perf bench futex lock-pi perf record -advRT || perf bench sched messaging -g 1000 || perf report summary: _____test________________spinlcok______________pv-qspinlcok_____ |futex hash | 556370 ops | 629634 ops | |futex lock-pi | 362 ops | 367 ops | |workloads | 23% | 13% | details: spinlock: test 1) # Running futex/hash benchmark... Run summary [PID 9962]: 32 threads, each operating on 1024 [private] futexes for 10 secs. Averaged 556370 operations/sec (+- 0.61%), total secs = 10 test 2) # Running futex/lock-pi benchmark... Run summary [PID 9962]: 32 threads doing pi lock/unlock pairing for 10 secs. Averaged 362 operations/sec (+- 0.00%), total secs = 10 test 3) perf bench sched messaging -g 1000 perf record -avdRT and perf report # Samples: 2M of event 'cycles:ppp' # Event count (approx.): 2045582241213 # # Overhead Command Shared Object Symbol # ........ ............... ................... ........................................................ # 22.96% sched-messaging [kernel.kallsyms] [k] _raw_spin_lock_irqsave 19.76% sched-messaging [kernel.kallsyms] [k] __spin_yield 2.09% sched-messaging [kernel.kallsyms] [k] __slab_free 2.07% sched-messaging [kernel.kallsyms] [k] unix_stream_read_generic pv-qspinlock: test 1) # Running futex/hash benchmark... Run summary [PID 3219]: 32 threads, each operating on 1024 [private] futexes for 10 secs. Averaged 629634 operations/sec (+- 0.38%), total secs = 10 test 2) # Running futex/lock-pi benchmark... Run summary [PID 3219]: 32 threads doing pi lock/unlock pairing for 10 secs. Averaged 367 operations/sec (+- 0.00%), total secs = 10 test 3) perf bench sched messaging -g 1000 perf record -avdRT and perf report # Samples: 1M of event 'cycles:ppp' # Event count (approx.): 1250040606393 # # Overhead Command Shared Object Symbol # ........ ............... .............................. ........................................................ # 9.87% sched-messaging [kernel.vmlinux] [k] __pv_queued_spin_lock_slowpath 3.66% sched-messaging [kernel.vmlinux] [k] __pv_queued_spin_unlock 3.37% sched-messaging [kernel.vmlinux] [k] __slab_free 3.06% sched-messaging [kernel.vmlinux] [k] unix_stream_read_generic Pan Xinhui (6): qspinlock: powerpc support qspinlock powerpc: pseries/Kconfig: qspinlock build config powerpc: lib/locks.c: cpu yield/wake helper function pv-qspinlock: powerpc support pv-qspinlock pv-qspinlock: use cmpxchg_release in __pv_queued_spin_unlock powerpc: pseries: pv-qspinlock build config/make arch/powerpc/include/asm/qspinlock.h | 39 +++++++++++++++++++ arch/powerpc/include/asm/qspinlock_paravirt.h | 38 +++++++++++++++++++ .../powerpc/include/asm/qspinlock_paravirt_types.h | 13 +++++++ arch/powerpc/include/asm/spinlock.h | 31 +++++++++------ arch/powerpc/include/asm/spinlock_types.h | 4 ++ arch/powerpc/kernel/Makefile | 1 + arch/powerpc/kernel/paravirt.c | 44 ++++++++++++++++++++++ arch/powerpc/lib/locks.c | 36 ++++++++++++++++++ arch/powerpc/platforms/pseries/Kconfig | 9 +++++ arch/powerpc/platforms/pseries/setup.c | 5 +++ kernel/locking/qspinlock_paravirt.h | 2 +- 11 files changed, 209 insertions(+), 13 deletions(-) create mode 100644 arch/powerpc/include/asm/qspinlock.h create mode 100644 arch/powerpc/include/asm/qspinlock_paravirt.h create mode 100644 arch/powerpc/include/asm/qspinlock_paravirt_types.h create mode 100644 arch/powerpc/kernel/paravirt.c -- 1.9.1