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