------- Comment From vaish...@in.ibm.com 2015-07-02 09:41 EDT------- FYI, Bug ID https://bugzilla.linux.ibm.com/page.cgi?id=track/proxy.html&bug_id=120252 tracks similiar issue on 15.04 and Sukadev Bhattiprolu have provided the fix.
This fix has been merged into linux-tip: http://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/commit/?id=7951722da2963cc1f1a7831a37aa2311ac927056 commit 7951722da2963cc1f1a7831a37aa2311ac927056 Author: Sukadev Bhattiprolu <suka...@linux.vnet.ibm.com> Date: Fri Jun 12 01:28:36 2015 -0400 perf trace: Fix race condition at the end of started workloads -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1470578 Title: perf trace sleep 1 command is not giving any output Status in linux package in Ubuntu: New Bug description: Problem Description ===================== perf trace sleep 1 command is not giving any output ---uname output--- Linux alp15 3.19.0-20-generic #20~14.04.1-Ubuntu SMP Sat May 30 00:14:50 UTC 2015 ppc64le ppc64le ppc64le GNU/Linux Machine Type = P8 Steps to Reproduce ======================= Install a P8 Power VM LPAR with Ubuntu 14.04.2 ISO image. Then install the Ubuntu 14.04.3 kernel on the same and reboot. root@alp15:~# perf trace sleep 1 root@alp15:~# echo $? 0 root@alp15:~# which perf /usr/bin/perf root@alp15:~# dpkg -S /usr/bin/perf linux-tools-common: /usr/bin/perf root@alp15:~# dpkg --list | grep linux-tools ii linux-tools-3.19.0-20-generic 3.19.0-20.20~14.04.1 ppc64el Linux kernel version specific tools for version 3.19.0-20 ii linux-tools-common 3.13.0-54.91 all Linux kernel version specific tools for version 3.13.0 Userspace tool common name: /usr/bin/perf Userspace rpm: linux-tools-common The userspace tool has the following bit modes: 64-bit To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1470578/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
