[GIT PULL] SMP cross-call changes for v6.4

[GIT PULL] SMP cross-call changes for v6.4

[Ingo Molnar]

Linus,

Please pull the latest smp/core git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git smp-core-2023-04-27

   # HEAD: 5c3124975e15c1fadd5af1c61e4d627cf6d97ba2 trace,smp: Trace all smp_function_call*() invocations

SMP cross-CPU function-call updates for v6.4:

 - Remove diagnostics and adjust config for CSD lock diagnostics

 - Add a generic IPI-sending tracepoint, as currently there's no easy
   way to instrument IPI origins: it's arch dependent and for some
   major architectures it's not even consistently available.

 Thanks,

	Ingo

------------------>
Paul E. McKenney (4):
      locking/csd_lock: Add Kconfig option for csd_debug default
      locking/csd_lock: Remove added data from CSD lock debugging
      locking/csd_lock: Remove per-CPU data indirection from CSD lock debugging
      kernel/smp: Make csdlock_debug= resettable

Peter Zijlstra (2):
      trace: Add trace_ipi_send_cpu()
      trace,smp: Trace all smp_function_call*() invocations

Valentin Schneider (7):
      trace: Add trace_ipi_send_cpumask()
      sched, smp: Trace IPIs sent via send_call_function_single_ipi()
      smp: Trace IPIs sent via arch_send_call_function_ipi_mask()
      irq_work: Trace self-IPIs sent via arch_irq_work_raise()
      treewide: Trace IPIs sent via smp_send_reschedule()
      smp: reword smp call IPI comment
      sched, smp: Trace smp callback causing an IPI


 Documentation/admin-guide/kernel-parameters.txt |  17 +-
 arch/alpha/kernel/smp.c                         |   2 +-
 arch/arc/kernel/smp.c                           |   2 +-
 arch/arm/kernel/smp.c                           |   3 +-
 arch/arm/mach-actions/platsmp.c                 |   2 +
 arch/arm64/kernel/smp.c                         |   3 +-
 arch/csky/kernel/smp.c                          |   2 +-
 arch/hexagon/kernel/smp.c                       |   2 +-
 arch/ia64/kernel/smp.c                          |   4 +-
 arch/loongarch/kernel/smp.c                     |   4 +-
 arch/mips/include/asm/smp.h                     |   2 +-
 arch/mips/kernel/rtlx-cmp.c                     |   2 +
 arch/openrisc/kernel/smp.c                      |   2 +-
 arch/parisc/kernel/smp.c                        |   4 +-
 arch/powerpc/kernel/smp.c                       |   6 +-
 arch/powerpc/kvm/book3s_hv.c                    |   3 +
 arch/powerpc/platforms/powernv/subcore.c        |   2 +
 arch/riscv/kernel/smp.c                         |   4 +-
 arch/s390/kernel/smp.c                          |   2 +-
 arch/sh/kernel/smp.c                            |   2 +-
 arch/sparc/kernel/smp_32.c                      |   2 +-
 arch/sparc/kernel/smp_64.c                      |   2 +-
 arch/x86/include/asm/smp.h                      |   2 +-
 arch/x86/kvm/svm/svm.c                          |   4 +
 arch/x86/kvm/x86.c                              |   2 +
 arch/xtensa/kernel/smp.c                        |   2 +-
 include/linux/smp.h                             |  11 +-
 include/trace/events/ipi.h                      |  44 ++++
 kernel/irq_work.c                               |  12 +-
 kernel/sched/core.c                             |  22 +-
 kernel/sched/smp.h                              |   2 +-
 kernel/smp.c                                    | 313 ++++++------------------
 lib/Kconfig.debug                               |   9 +
 virt/kvm/kvm_main.c                             |   3 +
 34 files changed, 219 insertions(+), 281 deletions(-)

Re: [GIT PULL] SMP cross-call changes for v6.4

[Linus Torvalds]

On Thu, Apr 27, 2023 at 2:09 PM Ingo Molnar <mingo@kernel.org> wrote:
>
> SMP cross-CPU function-call updates for v6.4:
>
>  - Remove diagnostics and adjust config for CSD lock diagnostics

Thank you.

It's rare that this kind of "old debugging that isn't really relevant
any more" gets removed.

It's good that it happens.

               Linus

Re: [GIT PULL] SMP cross-call changes for v6.4

[pr-tracker-bot]

The pull request you sent on Thu, 27 Apr 2023 23:09:08 +0200:

> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git smp-core-2023-04-27

has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/f20730efbd305d42eded761f6fbd9a59d6125228

Thank you!

-- 
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