Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753332AbbGQBwT (ORCPT ); Thu, 16 Jul 2015 21:52:19 -0400 Received: from e19.ny.us.ibm.com ([129.33.205.209]:52731 "EHLO e19.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753069AbbGQBwR (ORCPT ); Thu, 16 Jul 2015 21:52:17 -0400 X-Helo: d01dlp02.pok.ibm.com X-MailFrom: sukadev@linux.vnet.ibm.com X-RcptTo: linux-kernel@vger.kernel.org Date: Thu, 16 Jul 2015 18:51:04 -0700 From: Sukadev Bhattiprolu To: Zumeng Chen Cc: Michael Ellerman , linux-kernel@vger.kernel.org, paulus@samba.org, imunsie@au1.ibm.com, linuxppc-dev@lists.ozlabs.org, romeo.cane.ext@coriant.com Subject: Re: BUG: perf error on syscalls for powerpc64. Message-ID: <20150717015104.GA25558@us.ibm.com> References: <1437037461.15828.2.camel@ellerman.id.au> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Operating-System: Linux 2.0.32 on an i486 User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 15071701-0057-0000-0000-000000C11A47 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1430 Lines: 37 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? IIRC, I saw the opposite behavior on an LE system a few months ago. i.e. without 1028ccf5, 'perf listf|grep syscall' failed. 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/