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authorJuergen Gross <jgross@suse.com>2015-01-21 08:49:22 +0100
committerDavid Vrabel <david.vrabel@citrix.com>2015-03-16 15:49:13 +0100
commit9b4ade226f7468bb26f98b6cd01cb5b8a05fc96d (patch)
tree8f3de75f4cf3ad1eb3a6523dc89babbba46eb160 /scripts/xen-hypercalls.sh
parentxen: balloon: Use static attribute groups for sysfs entries (diff)
downloadlinux-9b4ade226f7468bb26f98b6cd01cb5b8a05fc96d.tar.xz
linux-9b4ade226f7468bb26f98b6cd01cb5b8a05fc96d.zip
xen: build infrastructure for generating hypercall depending symbols
Today there are several places in the kernel which build tables containing one entry for each possible Xen hypercall. Create an infrastructure to be able to generate these tables at build time. Based-on-patch-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com> Acked-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Diffstat (limited to 'scripts/xen-hypercalls.sh')
-rw-r--r--scripts/xen-hypercalls.sh12
1 files changed, 12 insertions, 0 deletions
diff --git a/scripts/xen-hypercalls.sh b/scripts/xen-hypercalls.sh
new file mode 100644
index 000000000000..676d9226814f
--- /dev/null
+++ b/scripts/xen-hypercalls.sh
@@ -0,0 +1,12 @@
+#!/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] = $2 }
+ END { print "/* auto-generated by scripts/xen-hypercall.sh */"
+ for (i in v) if (!(v[i] in v))
+ print "HYPERCALL("substr(v[i], 14)")"}' | sort -u >$out