GitHub pull request #3334 of commit 5f47a7a98552dd9999daca442cdcdf67d68148c3, no merge conflicts.sha1origin/pr/3334/mergeghprbActualCommit5f47a7a98552dd9999daca442cdcdf67d68148c3ghprbActualCommitAuthorghprbActualCommitAuthorEmailghprbAuthorRepoGitUrlhttps://github.com/ethercflow/bcc.gitghprbTriggerAuthorghprbTriggerAuthorEmailghprbTriggerAuthorLoginyonghong-songghprbTriggerAuthorLoginMention@yonghong-songghprbPullId3334ghprbTargetBranchmasterghprbSourceBranchoffcputimeGIT_BRANCHoffcputimeghprbPullAuthorEmailethercflow@gmail.comghprbPullAuthorLoginethercflowghprbPullAuthorLoginMention@ethercflowghprbPullDescriptionGitHub pull request #3334 of commit 5f47a7a98552dd9999daca442cdcdf67d68148c3, no merge conflicts.ghprbPullTitlelibbpf-tools: add offcputimeghprbPullLinkhttps://github.com/iovisor/bcc/pull/3334ghprbPullLongDescriptionCompared with the previous version, raw_tp/sched_switch is used instead of kprobe/finish_task_switch, because the latter has symbolic name problems under gcc 10 https://github.com/iovisor/bcc/issues/3293.\r\n\r\nFunctionally compared with the old version, the following features are missing, will be completed in subsequent PR.\r\n\r\nTodo list\r\n\r\n- [x] Support user stack symbol parsing from ELF & DYN\r\n- [x] Support user stack symbol parsing from vdso\r\n- [ ] Support user stack symbol parsing from perf-map\r\n- [ ] Support user stack symbol parsing with mount ns\r\n- [ ] Sort the results in ascending order according to the length of offcpu time\r\n- [ ] Support folding output results\r\n- [ ] missing stack event report\r\n\r\nThe output looks like below:\r\n```\r\n bpf_prog_f8f33eb3e61e9447_sched_switch\r\n bpf_prog_f8f33eb3e61e9447_sched_switch\r\n bpf_trace_run3\r\n __bpf_trace_sched_switch\r\n __schedule\r\n schedule\r\n futex_wait_queue_me\r\n futex_wait\r\n do_futex\r\n __x64_sys_futex\r\n do_syscall_64\r\n entry_SYSCALL_64_after_hwframe\r\n runtime.futex\r\n runtime.notesleep\r\n runtime.stopm\r\n runtime.findrunnable\r\n runtime.schedule\r\n runtime.park_m\r\n runtime.mcall\r\n [unknown]\r\n - containerd (1172)\r\n 69917\r\n```\r\n\r\n\r\nSigned-off-by: Wenbo Zhang <ethercflow@gmail.com>ghprbCommentBody[buildbot, test this please]ghprbGhRepositoryiovisor/bccghprbCredentialsId6d3daf13-69b8-48b1-9c8f-ec5353264113false<a title="libbpf-tools: add offcputime" href="https://github.com/iovisor/bcc/pull/3334">PR #3334</a>: libbpf-tools: add offcputime#95511462417460664bcc-pr #955955false9557649SUCCESS1619885036213https://buildbot.iovisor.org/jenkins/user/andriin/my-views/view/all/job/bcc-pr/955/git955https://buildbot.iovisor.org/jenkins/user/andriin/my-views/view/all/job/bcc-pr/label=fc25/955/955https://buildbot.iovisor.org/jenkins/user/andriin/my-views/view/all/job/bcc-pr/label=fc26/955/955https://buildbot.iovisor.org/jenkins/user/andriin/my-views/view/all/job/bcc-pr/label=fc27/955/955https://buildbot.iovisor.org/jenkins/user/andriin/my-views/view/all/job/bcc-pr/label=fc28/955/955https://buildbot.iovisor.org/jenkins/user/andriin/my-views/view/all/job/bcc-pr/label=ubuntu1604/955/955https://buildbot.iovisor.org/jenkins/user/andriin/my-views/view/all/job/bcc-pr/label=ubuntu1710/955/955https://buildbot.iovisor.org/jenkins/user/andriin/my-views/view/all/job/bcc-pr/label=ubuntu1804/955/