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



On 12/12/2014 11:48 PM, Boris Ostrovsky wrote:
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?

Paranoia related to the use of wildcards for files scanned:

$(srctree)/include/xen/interface/xen*.h


Juergen

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