Re: [PATCH v3 0/2] qspinlock: Introducing a 4-byte queue spinlock

[Raghavendra K T]

On 01/28/2014 11:49 PM, Waiman Long wrote:
> v2->v3:
>   - Simplify the code by using numerous mode only without an unfair option.
>   - Use the latest smp_load_acquire()/smp_store_release() barriers.
>   - Move the queue spinlock code to kernel/locking.
>   - Make the use of queue spinlock the default for x86-64 without user
>     configuration.
>   - Additional performance tuning.

Could you please point me to any dependency patches I am missing?
I am getting the compilation error (latest linus tree with 
9b0cd304f26b9fca140de15deeac2bf357d1f388)

Got something like below

make[1]: Nothing to be done for `all'.
  CHK     include/config/kernel.release
  CHK     include/generated/uapi/linux/version.h
  CHK     include/generated/utsrelease.h
make[1]: Nothing to be done for `relocs'.
  CC      kernel/bounds.s
In file included from include/asm-generic/getorder.h:7:0,
                 from /test/master/arch/x86/include/asm/page.h:71,
                 from /test/master/arch/x86/include/asm/processor.h:17,
                 from /test/master/arch/x86/include/asm/atomic.h:6,
                 from include/linux/atomic.h:4,
                 from include/asm-generic/qspinlock.h:22,
                 from 
/test/master/arch/x86/include/asm/spinlock_types.h:15,
                 from 
/test/master/arch/x86/include/asm/paravirt_types.h:331,
                 from /test/master/arch/x86/include/asm/ptrace.h:65,
                 from /test/master/arch/x86/include/asm/alternative.h:8,
                 from /test/master/arch/x86/include/asm/bitops.h:16,
                 from include/linux/bitops.h:33,
                 from include/linux/kernel.h:10,
                 from include/asm-generic/bug.h:13,
                 from /test/master/arch/x86/include/asm/bug.h:38,
                 from include/linux/bug.h:4,
                 from include/linux/page-flags.h:9,
                 from kernel/bounds.c:9:
include/linux/log2.h: In function ‘__ilog2_u32’:
include/linux/log2.h:34:2: error: implicit declaration of function ‘fls’ 
[-Werror=implicit-function-declaration]
include/linux/log2.h: In function ‘__ilog2_u64’:
include/linux/log2.h:42:2: error: implicit declaration of function 
‘fls64’ [-Werror=implicit-function-declaration]
include/linux/log2.h: In function ‘__roundup_pow_of_two’:
.
.
[trimmed]

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