X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=src%2Fwrapper%2Fpage_alloc.c;fp=src%2Fwrapper%2Fpage_alloc.c;h=3994bf5730bd775bbe62f08a1c22c2b4c2cea134;hb=3dfec2289896ff0f1a05a9e486f1585cd16beb84;hp=93504c993883244cb692ab192abef040148737d6;hpb=876e2e9225074dede98488270dee7226e73d2a63;p=lttng-modules.git

diff --git a/src/wrapper/page_alloc.c b/src/wrapper/page_alloc.c
index 93504c99..3994bf57 100644
--- a/src/wrapper/page_alloc.c
+++ b/src/wrapper/page_alloc.c
@@ -54,6 +54,25 @@ int wrapper_get_pfnblock_flags_mask_init(void)
 }
 EXPORT_SYMBOL_GPL(wrapper_get_pfnblock_flags_mask_init);
 
+/*
+ * Canary function to check for 'get_pfnblock_flags_mask()' at compile time.
+ *
+ * From 'include/linux/pageblock-flags.h':
+ *
+ *   unsigned long get_pfnblock_flags_mask(struct page *page,
+ *                                         unsigned long pfn,
+ *                                         unsigned long end_bitidx,
+ *                                         unsigned long mask);
+ */
+__attribute__((unused)) static
+unsigned long __canary__get_pfnblock_flags_mask(struct page *page,
+						unsigned long pfn,
+						unsigned long end_bitidx,
+						unsigned long mask)
+{
+	return get_pfnblock_flags_mask(page, pfn, end_bitidx, mask);
+}
+
 #else
 
 #include <linux/pageblock-flags.h>