From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754663Ab2JHUSQ (ORCPT ); Mon, 8 Oct 2012 16:18:16 -0400 Received: from shards.monkeyblade.net ([149.20.54.216]:57711 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752846Ab2JHUSL (ORCPT ); Mon, 8 Oct 2012 16:18:11 -0400 Date: Mon, 08 Oct 2012 16:18:06 -0400 (EDT) Message-Id: <20121008.161806.2146082252793236167.davem@davemloft.net> To: torvalds@linux-foundation.org CC: akpm@linux-foundation.org, sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [GIT] Sparc From: David Miller X-Mailer: Mew version 6.5 on Emacs 24.1 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org There is an attempt to fix a bad interaction between syscall tracing and force_successful_syscall() from Al Viro, but it needs to be redone as it introduced regressions and thus had to be reverted for now. Al is working on an updated version. But what we do have here are some significant bzero/memset improvements for Niagara-4. An 8K page can be cleared in around 600 cycles, because we essentially have a store that behaves like powerpc's dcbz that we can actually make real use of. Please pull, thanks a lot. The following changes since commit ecefbd94b834fa32559d854646d777c56749ef1c: Merge tag 'kvm-3.7-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm (2012-10-04 09:30:33 -0700) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc.git master for you to fetch changes up to 2863bc54ec03df7a6e2c48cff0477d7e2384efc9: Revert strace hiccups fix. (2012-10-05 20:39:04 -0700) ---------------------------------------------------------------- Al Viro (2): sparc64: Rearrange thread info to cheaply clear syscall noerror state. sparc64: Fix strace hiccups when force_successful_syscall() triggers. David S. Miller (2): sparc64: Niagara-4 bzero/memset, plus use MRU stores in page copy. Revert strace hiccups fix. arch/sparc/include/asm/asi.h | 19 +++++++++++++++++ arch/sparc/kernel/head_64.S | 2 +- arch/sparc/lib/Makefile | 2 +- arch/sparc/lib/NG4clear_page.S | 29 ++++++++++++++++++++++++++ arch/sparc/lib/NG4copy_page.S | 16 +++++++-------- arch/sparc/lib/NG4memset.S | 105 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ arch/sparc/lib/NG4patch.S | 15 ++++++++++++-- 7 files changed, 176 insertions(+), 12 deletions(-) create mode 100644 arch/sparc/lib/NG4clear_page.S create mode 100644 arch/sparc/lib/NG4memset.S From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Date: Mon, 08 Oct 2012 20:18:06 +0000 Subject: [GIT] Sparc Message-Id: <20121008.161806.2146082252793236167.davem@davemloft.net> List-Id: References: <20100329.131141.80866523.davem@davemloft.net> In-Reply-To: <20100329.131141.80866523.davem@davemloft.net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: torvalds@linux-foundation.org Cc: akpm@linux-foundation.org, sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org There is an attempt to fix a bad interaction between syscall tracing and force_successful_syscall() from Al Viro, but it needs to be redone as it introduced regressions and thus had to be reverted for now. Al is working on an updated version. But what we do have here are some significant bzero/memset improvements for Niagara-4. An 8K page can be cleared in around 600 cycles, because we essentially have a store that behaves like powerpc's dcbz that we can actually make real use of. Please pull, thanks a lot. The following changes since commit ecefbd94b834fa32559d854646d777c56749ef1c: Merge tag 'kvm-3.7-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm (2012-10-04 09:30:33 -0700) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc.git master for you to fetch changes up to 2863bc54ec03df7a6e2c48cff0477d7e2384efc9: Revert strace hiccups fix. (2012-10-05 20:39:04 -0700) ---------------------------------------------------------------- Al Viro (2): sparc64: Rearrange thread info to cheaply clear syscall noerror state. sparc64: Fix strace hiccups when force_successful_syscall() triggers. David S. Miller (2): sparc64: Niagara-4 bzero/memset, plus use MRU stores in page copy. Revert strace hiccups fix. arch/sparc/include/asm/asi.h | 19 +++++++++++++++++ arch/sparc/kernel/head_64.S | 2 +- arch/sparc/lib/Makefile | 2 +- arch/sparc/lib/NG4clear_page.S | 29 ++++++++++++++++++++++++++ arch/sparc/lib/NG4copy_page.S | 16 +++++++-------- arch/sparc/lib/NG4memset.S | 105 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ arch/sparc/lib/NG4patch.S | 15 ++++++++++++-- 7 files changed, 176 insertions(+), 12 deletions(-) create mode 100644 arch/sparc/lib/NG4clear_page.S create mode 100644 arch/sparc/lib/NG4memset.S