Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754675AbbGQFd6 (ORCPT ); Fri, 17 Jul 2015 01:33:58 -0400 Received: from mail.windriver.com ([147.11.1.11]:64543 "EHLO mail.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750975AbbGQFd5 (ORCPT ); Fri, 17 Jul 2015 01:33:57 -0400 Message-ID: <55A8939C.3090606@windriver.com> Date: Fri, 17 Jul 2015 13:33:16 +0800 From: Zumeng Chen User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 MIME-Version: 1.0 To: Sukadev Bhattiprolu CC: Michael Ellerman , , , , , Subject: Re: BUG: perf error on syscalls for powerpc64. References: <1437037461.15828.2.camel@ellerman.id.au> <20150717015104.GA25558@us.ibm.com> In-Reply-To: <20150717015104.GA25558@us.ibm.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1620 Lines: 48 On 2015年07月17日 09:51, Sukadev Bhattiprolu wrote: > Zumeng Chen [zumeng.chen@gmail.com] wrote: > | 3. What I have seen in 3.14.x kernel, > | ====================== > | And so far, no more difference to 4.x kernel from me about this part if > | I'm right. > | > | *) With 1028ccf5 > | > | perf list|grep -i syscall got me nothing. > | > | > | *) Without 1028ccf5 > | root@localhost:~# perf list|grep -i syscall > | syscalls:sys_enter_socket [Tracepoint event] > | syscalls:sys_exit_socket [Tracepoint event] > | syscalls:sys_enter_socketpair [Tracepoint event] > | syscalls:sys_exit_socketpair [Tracepoint event] > | syscalls:sys_enter_bind [Tracepoint event] > | syscalls:sys_exit_bind [Tracepoint event] > | syscalls:sys_enter_listen [Tracepoint event] > | syscalls:sys_exit_listen [Tracepoint event] > | ... ... > > Are you seeing this on big-endian or little-endian system? Big one. > > IIRC, I saw the opposite behavior on an LE system a few months ago. > i.e. without 1028ccf5, 'perf listf|grep syscall' failed. I wonder if this has anything to do with the bug. Cheers, Zumeng > > Applying 1028ccf5, seemed to fix it. > > Sukadev > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/