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SubjectRe: [PATCH v7 6/6] MCS Lock: add Kconfig entries to allow arch-specific hooks
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On Mon, 2014-01-20 at 13:30 +0100, Peter Zijlstra wrote:

>
> Then again, people seem to whinge if you don't keep these Kbuild files
> sorted, but manually sorting 29 files is just not something I like to
> do.
>

Peter,

Can you clarify what exactly needs to be sorted? The Kbuild files
spit out by git diff appears to be sorted already.

Tim

> ---
> arch/alpha/include/asm/Kbuild | 1 +
> arch/arc/include/asm/Kbuild | 1 +
> arch/arm/include/asm/Kbuild | 1 +
> arch/arm64/include/asm/Kbuild | 1 +
> arch/avr32/include/asm/Kbuild | 1 +
> arch/blackfin/include/asm/Kbuild | 1 +
> arch/c6x/include/asm/Kbuild | 1 +
> arch/cris/include/asm/Kbuild | 1 +
> arch/frv/include/asm/Kbuild | 1 +
> arch/hexagon/include/asm/Kbuild | 1 +
> arch/ia64/include/asm/Kbuild | 2 +-
> arch/m32r/include/asm/Kbuild | 1 +
> arch/m68k/include/asm/Kbuild | 1 +
> arch/metag/include/asm/Kbuild | 1 +
> arch/microblaze/include/asm/Kbuild | 1 +
> arch/mips/include/asm/Kbuild | 1 +
> arch/mn10300/include/asm/Kbuild | 1 +
> arch/openrisc/include/asm/Kbuild | 1 +
> arch/parisc/include/asm/Kbuild | 1 +
> arch/powerpc/include/asm/Kbuild | 2 +-
> arch/s390/include/asm/Kbuild | 1 +
> arch/score/include/asm/Kbuild | 1 +
> arch/sh/include/asm/Kbuild | 1 +
> arch/sparc/include/asm/Kbuild | 1 +
> arch/tile/include/asm/Kbuild | 1 +
> arch/um/include/asm/Kbuild | 1 +
> arch/unicore32/include/asm/Kbuild | 1 +
> arch/x86/include/asm/Kbuild | 1 +
> arch/xtensa/include/asm/Kbuild | 1 +
> include/asm-generic/mcs_spinlock.h | 13 +++++++++++++
> 30 files changed, 42 insertions(+), 2 deletions(-)
>
> diff --git a/arch/alpha/include/asm/Kbuild b/arch/alpha/include/asm/Kbuild
> index f01fb505ad52..14cbbbcec01f 100644
> --- a/arch/alpha/include/asm/Kbuild
> +++ b/arch/alpha/include/asm/Kbuild
> @@ -4,3 +4,4 @@ generic-y += clkdev.h
> generic-y += exec.h
> generic-y += trace_clock.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/arc/include/asm/Kbuild b/arch/arc/include/asm/Kbuild
> index 9ae21c198007..c0773a5c2ca7 100644
> --- a/arch/arc/include/asm/Kbuild
> +++ b/arch/arc/include/asm/Kbuild
> @@ -48,3 +48,4 @@ generic-y += user.h
> generic-y += vga.h
> generic-y += xor.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/arm/include/asm/Kbuild b/arch/arm/include/asm/Kbuild
> index c38b58c80202..c68cfdde8783 100644
> --- a/arch/arm/include/asm/Kbuild
> +++ b/arch/arm/include/asm/Kbuild
> @@ -34,3 +34,4 @@ generic-y += timex.h
> generic-y += trace_clock.h
> generic-y += unaligned.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/arm64/include/asm/Kbuild b/arch/arm64/include/asm/Kbuild
> index 519f89f5b6a3..24a3c10cdf38 100644
> --- a/arch/arm64/include/asm/Kbuild
> +++ b/arch/arm64/include/asm/Kbuild
> @@ -51,3 +51,4 @@ generic-y += user.h
> generic-y += vga.h
> generic-y += xor.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/avr32/include/asm/Kbuild b/arch/avr32/include/asm/Kbuild
> index 658001b52400..466e13d06bd3 100644
> --- a/arch/avr32/include/asm/Kbuild
> +++ b/arch/avr32/include/asm/Kbuild
> @@ -18,3 +18,4 @@ generic-y += sections.h
> generic-y += topology.h
> generic-y += trace_clock.h
> generic-y += xor.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/blackfin/include/asm/Kbuild b/arch/blackfin/include/asm/Kbuild
> index f2b43474b0e2..0bd1c5c688e3 100644
> --- a/arch/blackfin/include/asm/Kbuild
> +++ b/arch/blackfin/include/asm/Kbuild
> @@ -45,3 +45,4 @@ generic-y += unaligned.h
> generic-y += user.h
> generic-y += xor.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/c6x/include/asm/Kbuild b/arch/c6x/include/asm/Kbuild
> index fc0b3c356027..21d7100ddef9 100644
> --- a/arch/c6x/include/asm/Kbuild
> +++ b/arch/c6x/include/asm/Kbuild
> @@ -57,3 +57,4 @@ generic-y += user.h
> generic-y += vga.h
> generic-y += xor.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/cris/include/asm/Kbuild b/arch/cris/include/asm/Kbuild
> index 199b1a9dab89..c571cc12a4d2 100644
> --- a/arch/cris/include/asm/Kbuild
> +++ b/arch/cris/include/asm/Kbuild
> @@ -13,3 +13,4 @@ generic-y += trace_clock.h
> generic-y += vga.h
> generic-y += xor.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/frv/include/asm/Kbuild b/arch/frv/include/asm/Kbuild
> index 74742dc6a3da..ccca92eb782a 100644
> --- a/arch/frv/include/asm/Kbuild
> +++ b/arch/frv/include/asm/Kbuild
> @@ -3,3 +3,4 @@ generic-y += clkdev.h
> generic-y += exec.h
> generic-y += trace_clock.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/hexagon/include/asm/Kbuild b/arch/hexagon/include/asm/Kbuild
> index ada843c701ef..553077d0f50c 100644
> --- a/arch/hexagon/include/asm/Kbuild
> +++ b/arch/hexagon/include/asm/Kbuild
> @@ -55,3 +55,4 @@ generic-y += ucontext.h
> generic-y += unaligned.h
> generic-y += xor.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/ia64/include/asm/Kbuild b/arch/ia64/include/asm/Kbuild
> index f93ee087e8fe..25aed55ffeba 100644
> --- a/arch/ia64/include/asm/Kbuild
> +++ b/arch/ia64/include/asm/Kbuild
> @@ -4,4 +4,4 @@ generic-y += exec.h
> generic-y += kvm_para.h
> generic-y += trace_clock.h
> generic-y += preempt.h
> -generic-y += vtime.h
> \ No newline at end of file
> +generic-y += vtime.hgeneric-y += mcs_spinlock.h
> diff --git a/arch/m32r/include/asm/Kbuild b/arch/m32r/include/asm/Kbuild
> index 2b58c5f0bc38..d64fdd1b152b 100644
> --- a/arch/m32r/include/asm/Kbuild
> +++ b/arch/m32r/include/asm/Kbuild
> @@ -4,3 +4,4 @@ generic-y += exec.h
> generic-y += module.h
> generic-y += trace_clock.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/m68k/include/asm/Kbuild b/arch/m68k/include/asm/Kbuild
> index a5d27f272a59..1f4d44c7cc33 100644
> --- a/arch/m68k/include/asm/Kbuild
> +++ b/arch/m68k/include/asm/Kbuild
> @@ -32,3 +32,4 @@ generic-y += types.h
> generic-y += word-at-a-time.h
> generic-y += xor.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/metag/include/asm/Kbuild b/arch/metag/include/asm/Kbuild
> index 84d0c1d6b9b3..ae0ae6e7ff77 100644
> --- a/arch/metag/include/asm/Kbuild
> +++ b/arch/metag/include/asm/Kbuild
> @@ -53,3 +53,4 @@ generic-y += user.h
> generic-y += vga.h
> generic-y += xor.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/microblaze/include/asm/Kbuild b/arch/microblaze/include/asm/Kbuild
> index a82426589fff..6eb70bde6212 100644
> --- a/arch/microblaze/include/asm/Kbuild
> +++ b/arch/microblaze/include/asm/Kbuild
> @@ -5,3 +5,4 @@ generic-y += exec.h
> generic-y += trace_clock.h
> generic-y += syscalls.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/mips/include/asm/Kbuild b/arch/mips/include/asm/Kbuild
> index 1acbb8b77a71..c718d6342326 100644
> --- a/arch/mips/include/asm/Kbuild
> +++ b/arch/mips/include/asm/Kbuild
> @@ -14,3 +14,4 @@ generic-y += trace_clock.h
> generic-y += preempt.h
> generic-y += ucontext.h
> generic-y += xor.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/mn10300/include/asm/Kbuild b/arch/mn10300/include/asm/Kbuild
> index 032143ec2324..1393ae55ddaa 100644
> --- a/arch/mn10300/include/asm/Kbuild
> +++ b/arch/mn10300/include/asm/Kbuild
> @@ -4,3 +4,4 @@ generic-y += clkdev.h
> generic-y += exec.h
> generic-y += trace_clock.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/openrisc/include/asm/Kbuild b/arch/openrisc/include/asm/Kbuild
> index da1951a22907..7e049d3c0be0 100644
> --- a/arch/openrisc/include/asm/Kbuild
> +++ b/arch/openrisc/include/asm/Kbuild
> @@ -69,3 +69,4 @@ generic-y += vga.h
> generic-y += word-at-a-time.h
> generic-y += xor.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/parisc/include/asm/Kbuild b/arch/parisc/include/asm/Kbuild
> index 34b0be4ca52d..ebe16498339d 100644
> --- a/arch/parisc/include/asm/Kbuild
> +++ b/arch/parisc/include/asm/Kbuild
> @@ -6,3 +6,4 @@ generic-y += word-at-a-time.h auxvec.h user.h cputime.h emergency-restart.h \
> poll.h xor.h clkdev.h exec.h
> generic-y += trace_clock.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/powerpc/include/asm/Kbuild b/arch/powerpc/include/asm/Kbuild
> index d8f9d2f18a23..426001bd9c9e 100644
> --- a/arch/powerpc/include/asm/Kbuild
> +++ b/arch/powerpc/include/asm/Kbuild
> @@ -3,4 +3,4 @@ generic-y += clkdev.h
> generic-y += rwsem.h
> generic-y += trace_clock.h
> generic-y += preempt.h
> -generic-y += vtime.h
> \ No newline at end of file
> +generic-y += vtime.hgeneric-y += mcs_spinlock.h
> diff --git a/arch/s390/include/asm/Kbuild b/arch/s390/include/asm/Kbuild
> index 7a5288f3479a..850891317efe 100644
> --- a/arch/s390/include/asm/Kbuild
> +++ b/arch/s390/include/asm/Kbuild
> @@ -3,3 +3,4 @@
> generic-y += clkdev.h
> generic-y += trace_clock.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/score/include/asm/Kbuild b/arch/score/include/asm/Kbuild
> index fe7471eb0167..8e39afcd2efd 100644
> --- a/arch/score/include/asm/Kbuild
> +++ b/arch/score/include/asm/Kbuild
> @@ -6,3 +6,4 @@ generic-y += clkdev.h
> generic-y += trace_clock.h
> generic-y += xor.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/sh/include/asm/Kbuild b/arch/sh/include/asm/Kbuild
> index 231efbb68108..1aed131fbbfa 100644
> --- a/arch/sh/include/asm/Kbuild
> +++ b/arch/sh/include/asm/Kbuild
> @@ -35,3 +35,4 @@ generic-y += trace_clock.h
> generic-y += ucontext.h
> generic-y += xor.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/sparc/include/asm/Kbuild b/arch/sparc/include/asm/Kbuild
> index bf390667657a..8843299956cc 100644
> --- a/arch/sparc/include/asm/Kbuild
> +++ b/arch/sparc/include/asm/Kbuild
> @@ -17,3 +17,4 @@ generic-y += trace_clock.h
> generic-y += types.h
> generic-y += word-at-a-time.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/tile/include/asm/Kbuild b/arch/tile/include/asm/Kbuild
> index 22f3bd147fa7..152fc4821424 100644
> --- a/arch/tile/include/asm/Kbuild
> +++ b/arch/tile/include/asm/Kbuild
> @@ -39,3 +39,4 @@ generic-y += trace_clock.h
> generic-y += types.h
> generic-y += xor.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/um/include/asm/Kbuild b/arch/um/include/asm/Kbuild
> index fdde187e6087..620d7292d54b 100644
> --- a/arch/um/include/asm/Kbuild
> +++ b/arch/um/include/asm/Kbuild
> @@ -4,3 +4,4 @@ generic-y += ftrace.h pci.h io.h param.h delay.h mutex.h current.h exec.h
> generic-y += switch_to.h clkdev.h
> generic-y += trace_clock.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/unicore32/include/asm/Kbuild b/arch/unicore32/include/asm/Kbuild
> index 00045cbe5c63..cd7822c1effe 100644
> --- a/arch/unicore32/include/asm/Kbuild
> +++ b/arch/unicore32/include/asm/Kbuild
> @@ -61,3 +61,4 @@ generic-y += user.h
> generic-y += vga.h
> generic-y += xor.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/x86/include/asm/Kbuild b/arch/x86/include/asm/Kbuild
> index 7f669853317a..a8fee078b92f 100644
> --- a/arch/x86/include/asm/Kbuild
> +++ b/arch/x86/include/asm/Kbuild
> @@ -5,3 +5,4 @@ genhdr-y += unistd_64.h
> genhdr-y += unistd_x32.h
>
> generic-y += clkdev.h
> +generic-y += mcs_spinlock.h
> diff --git a/arch/xtensa/include/asm/Kbuild b/arch/xtensa/include/asm/Kbuild
> index 228d6aee3a16..9653e5cfe345 100644
> --- a/arch/xtensa/include/asm/Kbuild
> +++ b/arch/xtensa/include/asm/Kbuild
> @@ -29,3 +29,4 @@ generic-y += topology.h
> generic-y += trace_clock.h
> generic-y += xor.h
> generic-y += preempt.h
> +generic-y += mcs_spinlock.h
> diff --git a/include/asm-generic/mcs_spinlock.h b/include/asm-generic/mcs_spinlock.h
> index e69de29bb2d1..8b921a41f351 100644
> --- a/include/asm-generic/mcs_spinlock.h
> +++ b/include/asm-generic/mcs_spinlock.h
> @@ -0,0 +1,13 @@
> +#ifndef __ASM_MCS_SPINLOCK_H
> +#define __ASM_MCS_SPINLOCK_H
> +
> +/*
> + * Architectures can define their own:
> + *
> + * mcs_spin_lock_contended(l)
> + * mcs_spin_unlock_contended(l)
> + *
> + * See kernel/locking/mcs_spinlock.c.
> + */
> +
> +#endif /* __ASM_MCS_SPINLOCK_H */
> --
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