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authorJiang Liu <jiang.liu@linux.intel.com>2014-01-06 14:18:18 +0800
committerJoerg Roedel <joro@8bytes.org>2014-01-09 12:43:37 +0100
commit7c9197791a0cbbbb0f74aade3339f8e5890fbd15 (patch)
tree7de99c18c2b40d43decb634b22b03686b6e703db /include/linux/dmar.h
parent2fe2c6025d6a4939ae2fc97d1d761fc4a8d1abd9 (diff)
iommu/vt-d, trivial: simplify code with existing macros
Simplify vt-d related code with existing macros and introduce a new macro for_each_active_drhd_unit() to enumerate all active DRHD unit. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
Diffstat (limited to 'include/linux/dmar.h')
-rw-r--r--include/linux/dmar.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index 1a60dd630bb4..eccb0c0c6cf6 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -53,6 +53,10 @@ extern struct list_head dmar_drhd_units;
#define for_each_drhd_unit(drhd) \
list_for_each_entry(drhd, &dmar_drhd_units, list)
+#define for_each_active_drhd_unit(drhd) \
+ list_for_each_entry(drhd, &dmar_drhd_units, list) \
+ if (drhd->ignored) {} else
+
#define for_each_active_iommu(i, drhd) \
list_for_each_entry(drhd, &dmar_drhd_units, list) \
if (i=drhd->iommu, drhd->ignored) {} else