Re: [PATCH 1/4] xen: build infrastructure for generating hypercall depending symbols

[Boris Ostrovsky]

On 12/11/2014 01:04 PM, Juergen Gross wrote:
> diff --git a/scripts/xen-hypercalls.sh b/scripts/xen-hypercalls.sh
> new file mode 100644
> index 0000000..e6447b7
> --- /dev/null
> +++ b/scripts/xen-hypercalls.sh
> @@ -0,0 +1,11 @@
> +#!/bin/sh
> +out="$1"
> +shift
> +in="$@"
> +
> +for i in $in; do
> +	eval $CPP $LINUXINCLUDE -dD -imacros "$i" -x c /dev/null
> +done | \
> +awk '$1 == "#define" && $2 ~ /__HYPERVISOR_[a-z][a-z_0-9]*/ { v[$3] = $2 }
> +	END {for (i in v) if (!(v[i] in v))
> +		print "HYPERCALL("substr(v[i], 14)")"}' | sort -u >$out

Why do you 'sort -u'? Do you expect multiple definitions of the same 
hypercall?

-boris
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