X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=wrapper%2Fwriteback.h;h=646246621174011aea00ab8e6f353e101208b0c9;hb=HEAD;hp=cdcbd58444e0efbd8c3cca8cea04d6332c83f540;hpb=e36de50dd09527901339797a61a0a40d241c1a6d;p=lttng-modules.git diff --git a/wrapper/writeback.h b/wrapper/writeback.h deleted file mode 100644 index cdcbd584..00000000 --- a/wrapper/writeback.h +++ /dev/null @@ -1,61 +0,0 @@ -#ifndef _LTTNG_WRAPPER_WRITEBACK_H -#define _LTTNG_WRAPPER_WRITEBACK_H - -/* - * wrapper/writeback.h - * - * wrapper around global_dirty_limit read. Using KALLSYMS with KALLSYMS_ALL - * to get its address when available, else we need to have a kernel that - * exports this variable to GPL modules. - * - * Copyright (C) 2013 Mentor Graphics Corp. - * - * 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 - */ - -#ifdef CONFIG_KALLSYMS_ALL - -#include -#include - -static unsigned long *global_dirty_limit_sym; - -static inline -unsigned long wrapper_global_dirty_limit(void) -{ - if (!global_dirty_limit_sym) - global_dirty_limit_sym = - (void *) kallsyms_lookup_dataptr("global_dirty_limit"); - if (global_dirty_limit_sym) { - return *global_dirty_limit_sym; - } else { - printk_once(KERN_WARNING "LTTng: global_dirty_limit symbol lookup failed.\n"); - return 0; - } -} - -#else - -#include - -static inline -unsigned long wrapper_global_dirty_limit(void) -{ - return global_dirty_limit; -} - -#endif - -#endif /* _LTTNG_WRAPPER_WRITEBACK_H */