Linux Kernel compiles all the sources for a single a syscall

[Dipanjan Das]

Hi,

I have compiled 3.4 kernel. Following the tutorial
<http://blog.techveda.org/adding-system-calls-linux-kernel-3-5-x/>, I have
updated syscall_64.tbl and triggered a 'make'. Now it has started elaborate
compilation process, e.g. /fs/*.o sources. Shouldn't make only compile the
changed files?
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