linux-kernel - [PATCH v2 0/3] Do IRQ move cleanup with a timer instead of an IPI

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Date:   Wed, 21 Jun 2023 10:12:45 -0700
From:   Xin Li <xin3.li@...el.com>
To:     linux-kernel@...r.kernel.org, platform-driver-x86@...r.kernel.org,
        iommu@...ts.linux.dev, linux-hyperv@...r.kernel.org,
        linux-perf-users@...r.kernel.org, x86@...nel.org
Cc:     tglx@...utronix.de, mingo@...hat.com, bp@...en8.de,
        dave.hansen@...ux.intel.com, hpa@...or.com, steve.wahl@....com,
        mike.travis@....com, dimitri.sivanich@....com,
        russ.anderson@....com, dvhart@...radead.org, andy@...radead.org,
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Subject: [PATCH v2 0/3] Do IRQ move cleanup with a timer instead of an IPI

No point to waste a vector for cleaning up the leftovers of a moved
interrupt. Aside of that this must be the lowest priority of all vectors
which makes FRED systems utilizing vectors 0x10-0x1f more complicated
than necessary.

Schedule a timer instead.


Changes since v1:
* Add a lockdep_assert_held() statement to get rid of a bad comment
  that claims __vector_cleanup() needs to be called with vector_lock
  held. (Peter Zijlstra).


Thomas Gleixner (2):
  x86/vector: Rename send_cleanup_vector() to vector_schedule_cleanup()
  x86/vector: Replace IRQ_MOVE_CLEANUP_VECTOR with a timer callback

Xin Li (1):
  tools: Get rid of IRQ_MOVE_CLEANUP_VECTOR from tools

 arch/x86/include/asm/hw_irq.h                 |   4 +-
 arch/x86/include/asm/idtentry.h               |   1 -
 arch/x86/include/asm/irq_vectors.h            |   7 --
 arch/x86/kernel/apic/vector.c                 | 106 ++++++++++++++----
 arch/x86/kernel/idt.c                         |   1 -
 arch/x86/platform/uv/uv_irq.c                 |   2 +-
 drivers/iommu/amd/iommu.c                     |   2 +-
 drivers/iommu/hyperv-iommu.c                  |   4 +-
 drivers/iommu/intel/irq_remapping.c           |   2 +-
 tools/arch/x86/include/asm/irq_vectors.h      |   7 --
 .../beauty/tracepoints/x86_irq_vectors.sh     |   2 +-
 11 files changed, 90 insertions(+), 48 deletions(-)

-- 
2.34.1