📅 Linux性能日报 - 2026-03-30

📊 今日概览

类型	数量
🚀 新特性	1
🐛 Bug修复	5
⚡ 性能优化	0
📚 其他	5
总计	11

🎯 重点推荐

🚀 新特性

1. selftests/sched_ext: Add cyclic SCX_KICK_WAIT stress test

作者: Tejun Heo
来源: Git Mainline
链接: 查看详情

AI摘要: selftests/sched_ext: Add cyclic SCX_KICK_WAIT stress test

Add a test that creates a 3-CPU kick_wait cycle (A->B->C->A). A BPF scheduler kicks the next CPU in the ring with SCX_KICK_WAIT on every enqu

标签: feature

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🐛 Bug修复

1. Merge tag ‘sched_ext-for-7.0-rc6-fixes’ of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext

作者: Linus Torvalds
来源: Git Mainline
链接: 查看详情

AI摘要: Merge tag ‘sched_ext-for-7.0-rc6-fixes’ of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext

Pull sched_ext fixes from Tejun Heo:

• Fix SCX_KICK_WAIT deadlock where multiple CPUs waiting f

标签: bugfix

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2. Merge tag ‘wq-for-7.0-rc6-fixes’ of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

作者: Linus Torvalds
来源: Git Mainline
链接: 查看详情

AI摘要: Merge tag ‘wq-for-7.0-rc6-fixes’ of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

Pull workqueue fix from Tejun Heo:

• Fix false positive stall reports on weakly ordered architectures wher

标签: bugfix

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3. Merge tag ‘cgroup-for-7.0-rc6-fixes’ of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

作者: Linus Torvalds
来源: Git Mainline
链接: 查看详情

AI摘要: Merge tag ‘cgroup-for-7.0-rc6-fixes’ of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

Pull cgroup fixes from Tejun Heo:

• Fix cgroup rmdir racing with dying tasks.

  Deferred task cgrou

标签: bugfix

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4. sched_ext: Fix SCX_KICK_WAIT deadlock by deferring wait to balance callback

作者: Tejun Heo
来源: Git Mainline
链接: 查看详情

AI摘要: sched_ext: Fix SCX_KICK_WAIT deadlock by deferring wait to balance callback

SCX_KICK_WAIT busy-waits in kick_cpus_irq_workfn() using smp_cond_load_acquire() until the target CPU’s kick_sync advances.

标签: bugfix

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5. rtla: Fix build without libbpf header

作者: Tomas Glozar
来源: Git Mainline
链接: 查看详情

AI摘要: rtla: Fix build without libbpf header

rtla supports building without libbpf. However, BPF actions patchset [1] adds an include of bpf/libbpf.h into timerlat_bpf.h, which breaks build on systems that

标签: bugfix

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📚 其他更新

• cgroup/cpuset: Skip security check for hotplug induced v1 task migration - Waiman Long (链接)

• cgroup/cpuset: Simplify setsched decision check in task iteration loop of cpuset_can_attach() - Waiman Long (链接)

• Merge tag ‘fs_for_v7.0-rc7’ of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs - Linus Torvalds (链接)

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本报告由 Linux Performance Insights 自动生成
生成时间: 2026-04-02 16:39:44