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Linus Torvalds dda5df9823 Miscellaneous MMCID fixes to address bugs and 
performance regressions in the recent rewrite
 of the SCHED_MM_CID management code:
 
  - Fix livelock triggered by BPF CI testing
 
  - Fix hard lockup on weakly ordered systems
 
  - Simplify the dropping of CIDs in the exit path
    by removing an unintended transition phase.
 
  - Fix performance/scalability regression on a
    thread-pool benchmark by optimizing transitional
    CIDs when scheduling out.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2026-02-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "Miscellaneous MMCID fixes to address bugs and performance regressions
  in the recent rewrite of the SCHED_MM_CID management code:

   - Fix livelock triggered by BPF CI testing

   - Fix hard lockup on weakly ordered systems

   - Simplify the dropping of CIDs in the exit path by removing an
     unintended transition phase

   - Fix performance/scalability regression on a thread-pool benchmark
     by optimizing transitional CIDs when scheduling out"

* tag 'sched-urgent-2026-02-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/mmcid: Optimize transitional CIDs when scheduling out
  sched/mmcid: Drop per CPU CID immediately when switching to per task mode
  sched/mmcid: Protect transition on weakly ordered systems
  sched/mmcid: Prevent live lock on task to CPU mode transition
2026-02-07 09:10:42 -08:00
..
acpi ACPI: PCI: IRQ: Fix INTx GSIs signedness 2026-01-05 19:06:40 +01:00
asm-generic mm/hugetlb: fix excessive IPI broadcasts when unsharing PMD tables using mmu_gather 2026-01-20 09:34:26 -08:00
clocksource
crypto This update includes the following changes: 2025-12-03 11:28:38 -08:00
cxl
drm drm, drm/xe: Fix xe userptr in the absence of CONFIG_DEVICE_PRIVATE 2026-01-22 10:41:18 +01:00
dt-bindings dt-bindings: power: qcom,rpmpd: Add SC8280XP_MXC_AO 2025-12-16 15:24:09 -08:00
hyperv mshv: add definitions for arm64 gpa intercepts 2026-01-15 07:28:58 +00:00
keys
kunit kunit: Enforce task execution in {soft,hard}irq contexts 2025-12-22 12:20:08 -08:00
kvm
linux Miscellaneous MMCID fixes to address bugs and 2026-02-07 09:10:42 -08:00
math-emu
media
memory
misc
net nfc: nci: Fix race between rfkill and nci_unregister_device(). 2026-01-28 19:32:26 -08:00
pcmcia
ras Significant patch series in this merge are as follows: 2025-12-05 13:52:43 -08:00
rdma
rv rv: Fix compilation if !CONFIG_RV_REACTORS 2025-12-02 12:33:37 -05:00
scsi scsi: core: Fix error handler encryption support 2026-01-04 15:16:20 -05:00
soc This pull request is entirely SoC clk drivers, not for lack of trying to modify 2025-12-08 09:38:52 +09:00
sound ALSA: pcm: Improve the fix for race of buffer access at PCM OSS layer 2026-01-08 08:07:54 +01:00
target
trace dma-mapping fixes for Linux 6.19 2026-02-06 10:27:42 -08:00
uapi Char/Misc/IIO driver fixes for 6.19-rc7 2026-01-25 09:57:31 -08:00
ufs
vdso
video
xen
Kbuild