[PATCH 00/36] cpuidle,rcu: Cleanup the mess

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi All! (omg so many)

These here few patches mostly clear out the utter mess that is cpuidle vs rcuidle.

At the end of the ride there's only 2 real RCU_NONIDLE() users left

  arch/arm64/kernel/suspend.c:            RCU_NONIDLE(__cpu_suspend_exit());
  drivers/perf/arm_pmu.c:                 RCU_NONIDLE(armpmu_start(event, PERF_EF_RELOAD));
  kernel/cfi.c:   RCU_NONIDLE({

(the CFI one is likely dead in the kCFI rewrite) and there's only a hand full
of trace_.*_rcuidle() left:

  kernel/trace/trace_preemptirq.c:                        trace_irq_enable_rcuidle(CALLER_ADDR0, CALLER_ADDR1);
  kernel/trace/trace_preemptirq.c:                        trace_irq_disable_rcuidle(CALLER_ADDR0, CALLER_ADDR1);
  kernel/trace/trace_preemptirq.c:                        trace_irq_enable_rcuidle(CALLER_ADDR0, caller_addr);
  kernel/trace/trace_preemptirq.c:                        trace_irq_disable_rcuidle(CALLER_ADDR0, caller_addr);
  kernel/trace/trace_preemptirq.c:                trace_preempt_enable_rcuidle(a0, a1);
  kernel/trace/trace_preemptirq.c:                trace_preempt_disable_rcuidle(a0, a1);

All of them are in 'deprecated' code that is unused for GENERIC_ENTRY.

I've touched a _lot_ of code that I can't test and likely broken some of it :/
In particular, the whole ARM cpuidle stuff was quite involved with OMAP being
the absolute 'winner'.

I'm hoping Mark can help me sort the remaining ARM64 bits as he moves that to
GENERIC_ENTRY. I've also got a note that says ARM64 can probably do a WFE based
idle state and employ TIF_POLLING_NRFLAG to avoid some IPIs.

---
 arch/alpha/kernel/process.c          |    1 
 arch/alpha/kernel/vmlinux.lds.S      |    1 
 arch/arc/kernel/process.c            |    3 +
 arch/arc/kernel/vmlinux.lds.S        |    1 
 arch/arm/include/asm/vmlinux.lds.h   |    1 
 arch/arm/kernel/process.c            |    1 
 arch/arm/kernel/smp.c                |    6 +--
 arch/arm/mach-gemini/board-dt.c      |    3 +
 arch/arm/mach-imx/cpuidle-imx6q.c    |    4 +-
 arch/arm/mach-imx/cpuidle-imx6sx.c   |    5 ++
 arch/arm/mach-omap2/cpuidle34xx.c    |   16 ++++++++
 arch/arm/mach-omap2/cpuidle44xx.c    |   29 +++++++++------
 arch/arm/mach-omap2/pm.h             |    2 -
 arch/arm/mach-omap2/pm34xx.c         |   14 +++++--
 arch/arm/mach-omap2/powerdomain.c    |   10 ++---
 arch/arm64/kernel/idle.c             |    1 
 arch/arm64/kernel/smp.c              |    4 +-
 arch/arm64/kernel/vmlinux.lds.S      |    1 
 arch/csky/kernel/process.c           |    1 
 arch/csky/kernel/smp.c               |    2 -
 arch/csky/kernel/vmlinux.lds.S       |    1 
 arch/hexagon/kernel/process.c        |    1 
 arch/hexagon/kernel/vmlinux.lds.S    |    1 
 arch/ia64/kernel/process.c           |    1 
 arch/ia64/kernel/vmlinux.lds.S       |    1 
 arch/loongarch/kernel/vmlinux.lds.S  |    1 
 arch/m68k/kernel/vmlinux-nommu.lds   |    1 
 arch/m68k/kernel/vmlinux-std.lds     |    1 
 arch/m68k/kernel/vmlinux-sun3.lds    |    1 
 arch/microblaze/kernel/process.c     |    1 
 arch/microblaze/kernel/vmlinux.lds.S |    1 
 arch/mips/kernel/idle.c              |    8 +---
 arch/mips/kernel/vmlinux.lds.S       |    1 
 arch/nios2/kernel/process.c          |    1 
 arch/nios2/kernel/vmlinux.lds.S      |    1 
 arch/openrisc/kernel/process.c       |    1 
 arch/openrisc/kernel/vmlinux.lds.S   |    1 
 arch/parisc/kernel/process.c         |    2 -
 arch/parisc/kernel/vmlinux.lds.S     |    1 
 arch/powerpc/kernel/idle.c           |    5 +-
 arch/powerpc/kernel/vmlinux.lds.S    |    1 
 arch/riscv/kernel/process.c          |    1 
 arch/riscv/kernel/vmlinux-xip.lds.S  |    1 
 arch/riscv/kernel/vmlinux.lds.S      |    1 
 arch/s390/kernel/idle.c              |    1 
 arch/s390/kernel/vmlinux.lds.S       |    1 
 arch/sh/kernel/idle.c                |    1 
 arch/sh/kernel/vmlinux.lds.S         |    1 
 arch/sparc/kernel/leon_pmc.c         |    4 ++
 arch/sparc/kernel/process_32.c       |    1 
 arch/sparc/kernel/process_64.c       |    3 +
 arch/sparc/kernel/vmlinux.lds.S      |    1 
 arch/um/kernel/dyn.lds.S             |    1 
 arch/um/kernel/process.c             |    1 
 arch/um/kernel/uml.lds.S             |    1 
 arch/x86/coco/tdx/tdcall.S           |   15 +-------
 arch/x86/coco/tdx/tdx.c              |   25 +++----------
 arch/x86/events/amd/brs.c            |   13 ++-----
 arch/x86/include/asm/irqflags.h      |   11 ++---
 arch/x86/include/asm/mwait.h         |   14 +++----
 arch/x86/include/asm/nospec-branch.h |    2 -
 arch/x86/include/asm/paravirt.h      |    6 ++-
 arch/x86/include/asm/perf_event.h    |    2 -
 arch/x86/include/asm/shared/io.h     |    4 +-
 arch/x86/include/asm/shared/tdx.h    |    1 
 arch/x86/include/asm/special_insns.h |    6 +--
 arch/x86/include/asm/xen/hypercall.h |    2 -
 arch/x86/kernel/paravirt.c           |   14 ++++++-
 arch/x86/kernel/process.c            |   65 +++++++++++++++++------------------
 arch/x86/kernel/vmlinux.lds.S        |    1 
 arch/x86/xen/enlighten_pv.c          |    2 -
 arch/x86/xen/irq.c                   |    2 -
 arch/xtensa/kernel/process.c         |    1 
 arch/xtensa/kernel/vmlinux.lds.S     |    1 
 drivers/acpi/processor_idle.c        |   46 ++++++++++++++----------
 drivers/base/power/runtime.c         |   24 ++++++------
 drivers/clk/clk.c                    |    8 ++--
 drivers/cpuidle/cpuidle-arm.c        |    1 
 drivers/cpuidle/cpuidle-big_little.c |    8 +++-
 drivers/cpuidle/cpuidle-mvebu-v7.c   |    7 +++
 drivers/cpuidle/cpuidle-psci.c       |   10 +++--
 drivers/cpuidle/cpuidle-qcom-spm.c   |    1 
 drivers/cpuidle/cpuidle-riscv-sbi.c  |   10 +++--
 drivers/cpuidle/cpuidle-tegra.c      |   21 ++++++++---
 drivers/cpuidle/cpuidle.c            |   21 +++++------
 drivers/cpuidle/dt_idle_states.c     |    2 -
 drivers/cpuidle/poll_state.c         |   10 ++++-
 drivers/idle/intel_idle.c            |   29 ++++++++++++---
 include/asm-generic/vmlinux.lds.h    |    9 +---
 include/linux/compiler_types.h       |    8 +++-
 include/linux/cpu.h                  |    3 -
 include/linux/cpuidle.h              |   33 +++++++++++++++++
 include/linux/cpumask.h              |    4 +-
 include/linux/sched/idle.h           |   40 ++++++++++++++++-----
 include/linux/thread_info.h          |   18 +++++++++
 include/linux/tracepoint.h           |   13 ++++++-
 kernel/cpu_pm.c                      |    9 ----
 kernel/printk/printk.c               |    2 -
 kernel/rcu/tree.c                    |    9 +---
 kernel/sched/idle.c                  |   47 +++++++------------------
 kernel/time/tick-broadcast-hrtimer.c |   29 ++++++---------
 kernel/time/tick-broadcast.c         |    6 ++-
 kernel/trace/trace.c                 |    3 +
 tools/objtool/check.c                |   15 +++++++-
 104 files changed, 449 insertions(+), 342 deletions(-)




[Index of Archives]     [Linux Kernel]     [Kernel Newbies]     [x86 Platform Driver]     [Netdev]     [Linux Wireless]     [Netfilter]     [Bugtraq]     [Linux Filesystems]     [Yosemite Discussion]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Samba]     [Device Mapper]

  Powered by Linux