From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e23smtp03.au.ibm.com (e23smtp03.au.ibm.com [202.81.31.145]) (using TLSv1.2 with cipher CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3rF4xB3V3MzDq5d for ; Wed, 25 May 2016 18:21:18 +1000 (AEST) Received: from localhost by e23smtp03.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 25 May 2016 18:21:16 +1000 Received: from d23relay06.au.ibm.com (d23relay06.au.ibm.com [9.185.63.219]) by d23dlp02.au.ibm.com (Postfix) with ESMTP id 16DFA2BB0057 for ; Wed, 25 May 2016 18:21:04 +1000 (EST) Received: from d23av03.au.ibm.com (d23av03.au.ibm.com [9.190.234.97]) by d23relay06.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u4P8KroL58720400 for ; Wed, 25 May 2016 18:20:53 +1000 Received: from d23av03.au.ibm.com (localhost [127.0.0.1]) by d23av03.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u4P8JxDR014667 for ; Wed, 25 May 2016 18:20:00 +1000 From: Pan Xinhui To: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, virtualization@lists.linux-foundation.org Cc: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au, peterz@infradead.org, mingo@redhat.com, paulmck@linux.vnet.ibm.com, jeremy@goop.org, chrisw@sous-sol.org, akataria@vmware.com, rusty@rustcorp.com.au, Pan Xinhui Subject: [PATCH v3 0/6] powerpc use pv-qpsinlock as the default spinlock implemention Date: Wed, 25 May 2016 16:18:03 +0800 Message-Id: <1464164289-6124-1-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 from v2: __spin_yeild_cpu() will yield slices to lpar if target cpu is running. remove unnecessary rmb() in __spin_yield/wake_cpu. __pv_wait() will check the *ptr == val. some commit message change change fome v1: separate into 6 pathes from one patch some minor code changes. I do several tests on pseries IBM,8408-E8E with 32cpus, 64GB memory. benchmark test results are below. 2 perf tests: perf bench futex hash perf bench futex lock-pi _____test________________spinlcok______________pv-qspinlcok_____ |futex hash | 556370 ops | 629634 ops | |futex lock-pi | 362 ops | 367 ops | scheduler test: Test how many loops of schedule() can finish within 10 seconds on all cpus. _____test________________spinlcok______________pv-qspinlcok_____ |schedule() loops| 322811921 | 311449290 | kernel compiling test: build a linux kernel image to see how long it took _____test________________spinlcok______________pv-qspinlcok_____ | compiling takes| 22m | 22m | Pan Xinhui (6): qspinlock: powerpc support qspinlock powerpc: pseries/Kconfig: Add qspinlock build config powerpc: lib/locks.c: Add cpu yield/wake helper function pv-qspinlock: powerpc support pv-qspinlock pv-qspinlock: use cmpxchg_release in __pv_queued_spin_unlock powerpc: pseries: Add 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 | 45 ++++++++++++++++++++++ arch/powerpc/lib/locks.c | 37 ++++++++++++++++++ arch/powerpc/platforms/pseries/Kconfig | 9 +++++ arch/powerpc/platforms/pseries/setup.c | 5 +++ kernel/locking/qspinlock_paravirt.h | 2 +- 11 files changed, 211 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