Question about memcpy

[bing zhu]

Dear Sir/Ma'am
Thank you for your time ,i'm a student new to linux kernel.
I have a question about memcpy,i noticed that memcpy is faster in kernel
than in user space
for example :
in a module helloworld , i use memcpy to copy a 4096B to a block of memory
for like 10000 times
and in user space i do the same thing,I noticed that kernel is faster than
user ,
is it possible that in kernel when i insmod hello it can not be scheduled
but in user space it will so kernel is faster?
is there a possible way that a user task can run a block of code that
uninterruptable? No switch ,no schedule ?
Thank you !
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