-/*
+/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
* wrapper/page_alloc.c
*
* wrapper around get_pfnblock_flags_mask and Ubuntu
* to GPL modules.
*
* Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; only
- * version 2.1 of the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <lttng-kernel-version.h>
#if (defined(CONFIG_KALLSYMS) \
- && (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,2) \
+ && (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,19,2) \
|| LTTNG_KERNEL_RANGE(3,14,36, 3,15,0) \
|| LTTNG_KERNEL_RANGE(3,18,10, 3,19,0) \
|| LTTNG_DEBIAN_KERNEL_RANGE(3,16,7,9,0,0, 3,17,0,0,0,0) \
return -1;
return 0;
}
+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
return -1;
return 0;
}
+EXPORT_SYMBOL_GPL(wrapper_get_pfnblock_flags_mask_init);
#else