lttng-context-callstack.o lttng-calibrate.o \
lttng-context-hostname.o wrapper/random.o \
probes/lttng.o wrapper/trace-clock.o \
- wrapper/page_alloc.o \
lttng-tracker-id.o \
lttng-filter.o lttng-filter-interpreter.o \
lttng-filter-specialize.o \
* Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*/
-/*
- * This page_alloc.h wrapper needs to be included before gfpflags.h because it
- * overrides a function with a define.
- */
-#include "wrapper/page_alloc.h"
-
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/sched.h>
{
int ret;
- ret = wrapper_get_pfnblock_flags_mask_init();
- if (ret)
- return ret;
- ret = wrapper_get_pageblock_flags_mask_init();
- if (ret)
- return ret;
ret = lttng_probes_init();
if (ret)
return ret;
* Copyright (C) 2012 Mentor Graphics Corp.
*/
-/*
- * This page_alloc.h wrapper needs to be included before gfpflags.h because it
- * overrides a function with a define.
- */
-#include <wrapper/page_alloc.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <lttng-tracer.h>
+++ /dev/null
-/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
- * wrapper/page_alloc.c
- *
- * wrapper around get_pfnblock_flags_mask and Ubuntu
- * get_pageblock_flags_mask. Using KALLSYMS to get their address when
- * available, else we need to have a kernel that exports this function
- * to GPL modules.
- *
- * Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- */
-
-#include <lttng-kernel-version.h>
-
-#if (defined(CONFIG_KALLSYMS) \
- && (LINUX_VERSION_CODE >= 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) \
- || LTTNG_UBUNTU_KERNEL_RANGE(3,16,7,34, 3,17,0,0)))
-
-#include <linux/kallsyms.h>
-#include <linux/mm_types.h>
-#include <linux/module.h>
-#include <wrapper/kallsyms.h>
-#include <wrapper/page_alloc.h>
-
-static
-unsigned long (*get_pfnblock_flags_mask_sym)(struct page *page,
- unsigned long pfn,
- unsigned long end_bitidx,
- unsigned long mask);
-
-unsigned long wrapper_get_pfnblock_flags_mask(struct page *page,
- unsigned long pfn,
- unsigned long end_bitidx,
- unsigned long mask)
-{
- WARN_ON_ONCE(!get_pfnblock_flags_mask_sym);
- if (get_pfnblock_flags_mask_sym) {
- return get_pfnblock_flags_mask_sym(page, pfn, end_bitidx, mask);
- } else {
- return -ENOSYS;
- }
-}
-EXPORT_SYMBOL_GPL(wrapper_get_pfnblock_flags_mask);
-
-int wrapper_get_pfnblock_flags_mask_init(void)
-{
- get_pfnblock_flags_mask_sym =
- (void *) kallsyms_lookup_funcptr("get_pfnblock_flags_mask");
- if (!get_pfnblock_flags_mask_sym)
- return -1;
- return 0;
-}
-
-#else
-
-#include <linux/pageblock-flags.h>
-
-#endif
-
-#if (defined(CONFIG_KALLSYMS) \
- && LTTNG_UBUNTU_KERNEL_RANGE(3,13,11,50, 3,14,0,0))
-
-#include <linux/kallsyms.h>
-#include <linux/mm_types.h>
-#include <linux/module.h>
-#include <wrapper/kallsyms.h>
-#include <wrapper/page_alloc.h>
-
-static
-unsigned long (*get_pageblock_flags_mask_sym)(struct page *page,
- unsigned long end_bitidx,
- unsigned long mask);
-
-unsigned long wrapper_get_pageblock_flags_mask(struct page *page,
- unsigned long end_bitidx,
- unsigned long mask)
-{
- WARN_ON_ONCE(!get_pageblock_flags_mask_sym);
- if (get_pageblock_flags_mask_sym) {
- return get_pageblock_flags_mask_sym(page, end_bitidx, mask);
- } else {
- return -ENOSYS;
- }
-}
-EXPORT_SYMBOL_GPL(wrapper_get_pageblock_flags_mask);
-
-int wrapper_get_pageblock_flags_mask_init(void)
-{
- get_pageblock_flags_mask_sym =
- (void *) kallsyms_lookup_funcptr("get_pageblock_flags_mask");
- if (!get_pageblock_flags_mask_sym)
- return -1;
- return 0;
-}
-
-#else
-
-#include <linux/pageblock-flags.h>
-
-#endif
+++ /dev/null
-/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
- *
- * wrapper/page_alloc.h
- *
- * wrapper around get_pfnblock_flags_mask. Using KALLSYMS to get its address
- * when available, else we need to have a kernel that exports this function to
- * GPL modules.
- *
- * Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- */
-
-#ifndef _LTTNG_WRAPPER_PAGE_ALLOC_H
-#define _LTTNG_WRAPPER_PAGE_ALLOC_H
-
-#include <lttng-kernel-version.h>
-
-/*
- * We need to redefine get_pfnblock_flags_mask to our wrapper, because
- * the get_pageblock_migratetype() macro uses it.
- */
-#if (defined(CONFIG_KALLSYMS) \
- && (LINUX_VERSION_CODE >= 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) \
- || LTTNG_UBUNTU_KERNEL_RANGE(3,16,7,34, 3,17,0,0)))
-
-#define get_pfnblock_flags_mask wrapper_get_pfnblock_flags_mask
-
-#include <linux/mm_types.h>
-
-int wrapper_get_pfnblock_flags_mask_init(void);
-
-#else
-
-#include <linux/mm_types.h>
-
-static inline
-int wrapper_get_pfnblock_flags_mask_init(void)
-{
- return 0;
-}
-
-#endif
-
-/*
- * For a specific range of Ubuntu 3.13 kernels, we need to redefine
- * get_pageblock_flags_mask to our wrapper, because the
- * get_pageblock_migratetype() macro uses it. This function has been
- * introduced into mainline within commit
- * e58469bafd0524e848c3733bc3918d854595e20f, but never actually showed
- * up in a stable kernel version, since it has been changed by commit
- * dc4b0caff24d9b2918e9f27bc65499ee63187eba. Since Ubuntu chose to only
- * backport the former commit but not the latter, we need to do a
- * special case to cover this.
- */
-#if (defined(CONFIG_KALLSYMS) \
- && LTTNG_UBUNTU_KERNEL_RANGE(3,13,11,50, 3,14,0,0))
-
-#define get_pageblock_flags_mask wrapper_get_pageblock_flags_mask
-
-#include <linux/mm_types.h>
-
-int wrapper_get_pageblock_flags_mask_init(void);
-
-#else
-
-#include <linux/mm_types.h>
-
-static inline
-int wrapper_get_pageblock_flags_mask_init(void)
-{
- return 0;
-}
-
-#endif
-
-#endif /* _LTTNG_WRAPPER_PAGE_ALLOC_H */