GitHub pull request #3050 of commit 794152b3f7f05d546bdc9dcd64d692dc210a7179, no merge conflicts.sha1origin/pr/3050/mergeghprbActualCommit794152b3f7f05d546bdc9dcd64d692dc210a7179ghprbActualCommitAuthorghprbActualCommitAuthorEmailghprbAuthorRepoGitUrlhttps://github.com/ethercflow/bcc.gitghprbTriggerAuthorghprbTriggerAuthorEmailghprbTriggerAuthorLoginyonghong-songghprbTriggerAuthorLoginMention@yonghong-songghprbPullId3050ghprbTargetBranchmasterghprbSourceBranchbiotools-1GIT_BRANCHbiotools-1ghprbPullAuthorEmailethercflow@gmail.comghprbPullAuthorLoginethercflowghprbPullAuthorLoginMention@ethercflowghprbPullDescriptionGitHub pull request #3050 of commit 794152b3f7f05d546bdc9dcd64d692dc210a7179, no merge conflicts.ghprbPullTitlelibbpf-tools: add CO-RE biostacksghprbPullLinkhttps://github.com/iovisor/bcc/pull/3050ghprbPullLongDescription```sh\r\netcd 12849 sda\r\nbpf_prog_df594d080d725b41_fentry__blk_account_io_start\r\nbpf_prog_df594d080d725b41_fentry__blk_account_io_start\r\nbpf_trampoline_38122\r\nblk_account_io_start\r\ngeneric_make_request\r\nsubmit_bio\r\next4_io_submit\r\next4_writepages\r\ndo_writepages\r\n__filemap_fdatawrite_range\r\nfile_write_and_wait_range\r\next4_sync_file\r\nvfs_fsync_range\r\ndo_fsync\r\n__x64_sys_fdatasync\r\ndo_syscall_64\r\nentry_SYSCALL_64_after_hwframe\r\n usecs : count distribution\r\n 0 -> 1 : 0 | |\r\n 2 -> 3 : 0 | |\r\n 4 -> 7 : 0 | |\r\n 8 -> 15 : 0 | |\r\n 16 -> 31 : 0 | |\r\n 32 -> 63 : 7 |****************************************|\r\n\r\nkworker 6539 sda\r\nblk_account_io_merge_bio\r\nblk_attempt_plug_merge\r\nblk_mq_make_request\r\ngeneric_make_request\r\nsubmit_bio\r\next4_io_submit\r\next4_writepages\r\ndo_writepages\r\n__writeback_single_inode\r\nwriteback_sb_inodes\r\n__writeback_inodes_wb\r\nwb_writeback\r\nwb_workfn\r\nprocess_one_work\r\nworker_thread\r\nkthread\r\nret_from_fork\r\n usecs : count distribution\r\n 0 -> 1 : 0 | |\r\n 2 -> 3 : 0 | |\r\n 4 -> 7 : 0 | |\r\n 8 -> 15 : 0 | |\r\n 16 -> 31 : 0 | |\r\n 32 -> 63 : 1 |****************************************|\r\n```\r\n\r\n\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 CO-RE biostacks" href="https://github.com/iovisor/bcc/pull/3050">PR #3050</a>: libbpf-tools: add CO-RE bio...#65011016497460664bcc-pr #650650false6505208SUCCESS1597987370562https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/650/git650https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/label=fc25/650/650https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/label=fc26/650/650https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/label=fc27/650/650https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/label=fc28/650/650https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/label=ubuntu1604/650/650https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/label=ubuntu1710/650/650https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/label=ubuntu1804/650/