GitHub pull request #3449 of commit d24a3d476e4a11995808bb208b6fd61fe74e870a, no merge conflicts.sha1origin/pr/3449/mergeghprbActualCommitd24a3d476e4a11995808bb208b6fd61fe74e870aghprbActualCommitAuthorghprbActualCommitAuthorEmailghprbAuthorRepoGitUrlhttps://github.com/chenhengqi/bcc.gitghprbTriggerAuthorghprbTriggerAuthorEmailghprbTriggerAuthorLoginyonghong-songghprbTriggerAuthorLoginMention@yonghong-songghprbPullId3449ghprbTargetBranchmasterghprbSourceBranchfix-hardirqsGIT_BRANCHfix-hardirqsghprbPullAuthorEmailchenhengqi@outlook.comghprbPullAuthorLoginchenhengqighprbPullAuthorLoginMention@chenhengqighprbPullDescriptionGitHub pull request #3449 of commit d24a3d476e4a11995808bb208b6fd61fe74e870a, no merge conflicts.ghprbPullTitlehardirqs: Migrate to kernel tracepointghprbPullLinkhttps://github.com/iovisor/bcc/pull/3449ghprbPullLongDescriptionThe hardirqs tool is not working properly in recent kernels.\r\nI tested it with kernel 5.4/5.8/5.11, all compiled but has no output.\r\nThis commit migrates hardirqs to use kernel tracepoints instead of kprobes, \r\njust as we already made to softirqs.\r\n\r\n```shell\r\nsudo ./hardirqs.py -C 1 10\r\nTracing hard irq events... Hit Ctrl-C to end.\r\n\r\nHARDIRQ TOTAL_count\r\nenp0s31f6 1\r\niwlwifi 3\r\ni915 14\r\n\r\nHARDIRQ TOTAL_count\r\niwlwifi 2\r\nxhci_hcd 5\r\ni915 26\r\n...\r\n```\r\n\r\n```shell\r\nsudo ./hardirqs.py -d 1 10 \r\nTracing hard irq event time... Hit Ctrl-C to end.\r\n\r\n\r\nhardirq = 'i801_smbus'\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 : 4 |*** |\r\n 32 -> 63 : 42 |****************************************|\r\n\r\nhardirq = 'i915'\r\n usecs : count distribution\r\n 0 -> 1 : 1 |********** |\r\n 2 -> 3 : 1 |********** |\r\n 4 -> 7 : 3 |****************************** |\r\n 8 -> 15 : 3 |****************************** |\r\n 16 -> 31 : 4 |****************************************|\r\n 32 -> 63 : 2 |******************** |\r\n```\r\n\r\nSigned-off-by: Hengqi Chen <chenhengqi@outlook.com>ghprbCommentBody[buildbot, test this please]ghprbGhRepositoryiovisor/bccghprbCredentialsId6d3daf13-69b8-48b1-9c8f-ec5353264113false<a title="hardirqs: Migrate to kernel tracepoint" href="https://github.com/iovisor/bcc/pull/3449">PR #3449</a>: hardirqs: Migrate to kernel...#99413190387460664bcc-pr #994994false9947961FAILURE1621799292345https://buildbot.iovisor.org/jenkins/user/danobi/my-views/view/all/job/bcc-pr/994/git994https://buildbot.iovisor.org/jenkins/user/danobi/my-views/view/all/job/bcc-pr/label=fc25/994/994https://buildbot.iovisor.org/jenkins/user/danobi/my-views/view/all/job/bcc-pr/label=fc26/994/994https://buildbot.iovisor.org/jenkins/user/danobi/my-views/view/all/job/bcc-pr/label=fc27/994/994https://buildbot.iovisor.org/jenkins/user/danobi/my-views/view/all/job/bcc-pr/label=fc28/994/994https://buildbot.iovisor.org/jenkins/user/danobi/my-views/view/all/job/bcc-pr/label=ubuntu1604/994/994https://buildbot.iovisor.org/jenkins/user/danobi/my-views/view/all/job/bcc-pr/label=ubuntu1710/994/994https://buildbot.iovisor.org/jenkins/user/danobi/my-views/view/all/job/bcc-pr/label=ubuntu1804/994/