From: Anatolii Nikulin <nikulin.a@samsung.com>
Date: Wed, 1 Jun 2016 05:43:12 +0000 (+0300)
Subject: [IMPROVE] kernel with version > 4.0.0 support
X-Git-Tag: accepted/tizen/common/20160610.182109~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ba8480343a1b9d3d64a43291bafb165c5bda0f08;p=platform%2Fkernel%2Fswap-modules.git

[IMPROVE] kernel with version > 4.0.0 support

Change-Id: I185a64e561b85dca01f327ac0db52f5d4e8752b5
Signed-off-by: Anatolii Nikulin <nikulin.a@samsung.com>
---

diff --git a/kprobe/arch/x86/swap-asm/swap_kprobes.c b/kprobe/arch/x86/swap-asm/swap_kprobes.c
index d8e615f..9e5d2ed 100644
--- a/kprobe/arch/x86/swap-asm/swap_kprobes.c
+++ b/kprobe/arch/x86/swap-asm/swap_kprobes.c
@@ -719,7 +719,7 @@ static int kprobe_exceptions_notify(struct notifier_block *self,
 
 	DBPRINTF("val = %ld, data = 0x%X", val, (unsigned int) data);
 
-	if (args->regs == NULL || user_mode_vm(args->regs))
+	if (args->regs == NULL || swap_user_mode(args->regs))
 		return ret;
 
 	DBPRINTF("switch (val) %lu %d %d", val, DIE_INT3, DIE_TRAP);
diff --git a/kprobe/arch/x86/swap-asm/swap_kprobes.h b/kprobe/arch/x86/swap-asm/swap_kprobes.h
index 43f0f7a..bd1da71 100644
--- a/kprobe/arch/x86/swap-asm/swap_kprobes.h
+++ b/kprobe/arch/x86/swap-asm/swap_kprobes.h
@@ -80,6 +80,15 @@ typedef u8 kprobe_opcode_t;
 #define KPROBES_TRAMP_LEN		MAX_INSN_SIZE
 #define KPROBES_TRAMP_INSN_IDX          0
 
+static inline int swap_user_mode(struct pt_regs *regs)
+{
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 0, 0)
+	return user_mode(regs);
+#else /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 0, 0) */
+	return user_mode_vm(regs);
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 0, 0) */
+}
+
 static inline unsigned long arch_get_task_pc(struct task_struct *p)
 {
 	/* FIXME: Not implemented yet */
diff --git a/kprobe/swap_kprobes_deps.c b/kprobe/swap_kprobes_deps.c
index 7ef1056..22561e9 100644
--- a/kprobe/swap_kprobes_deps.c
+++ b/kprobe/swap_kprobes_deps.c
@@ -294,7 +294,17 @@ static inline int swap_in_gate_area(struct task_struct *task,
 	IMP_MOD_DEP_WRAPPER(in_gate_area, task, addr)
 #endif /* LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 38) */
 #else /*__HAVE_ARCH_GATE_AREA */
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 38)
+	struct mm_struct *mm;
+
+	if (task == NULL)
+		return 0;
+
+	mm = task->mm;
+	return in_gate_area(mm, addr);
+#else
 	return in_gate_area(task, addr);
+#endif
 #endif/*__HAVE_ARCH_GATE_AREA */
 }
 
diff --git a/loader/loader_module.c b/loader/loader_module.c
index d305b96..8b46f5f 100644
--- a/loader/loader_module.c
+++ b/loader/loader_module.c
@@ -219,7 +219,7 @@ static struct vm_area_struct *__get_linker_vma(struct task_struct *task)
 
 	for (vma = task->mm->mmap; vma; vma = vma->vm_next) {
 		if (vma->vm_file && vma->vm_flags & VM_EXEC
-		    && vma->vm_file->f_dentry == ld_info->dentry) {
+		    && vma->vm_file->f_path.dentry == ld_info->dentry) {
 				ls_put_linker_info(ld_info);
 				return vma;
 		}
@@ -324,7 +324,7 @@ static int mmap_entry_handler(struct kretprobe_instance *ri,
 	if (!file)
 		return 0;
 
-	dentry = file->f_dentry;
+	dentry = file->f_path.dentry;
 	if (dentry == NULL)
 		return 0;
 
diff --git a/preload/preload_module.c b/preload/preload_module.c
index 71a7fab..e1c1f0c 100644
--- a/preload/preload_module.c
+++ b/preload/preload_module.c
@@ -141,9 +141,9 @@ static unsigned long __do_preload_entry(struct uretprobe_instance *ri,
 		/* jump only if caller is instumented and it is not a system lib -
 		 * this leads to some errors */
 		if (cvma != NULL && cvma->vm_file != NULL &&
-			cvma->vm_file->f_dentry != NULL) {
+			cvma->vm_file->f_path.dentry != NULL) {
 
-			struct dentry *dentry = cvma->vm_file->f_dentry;
+			struct dentry *dentry = cvma->vm_file->f_path.dentry;
 			struct pd_t *pd = lpd_get_parent_pd(hd);
 
 			if (!pc_check_dentry_is_ignored(dentry) &&
diff --git a/sampler/swap_sampler_module.c b/sampler/swap_sampler_module.c
index c1a2b27..94cb506 100644
--- a/sampler/swap_sampler_module.c
+++ b/sampler/swap_sampler_module.c
@@ -74,7 +74,7 @@ static void swap_timer_stop(void)
 	put_online_cpus();
 }
 
-static int __cpuinit swap_cpu_notify(struct notifier_block *self,
+static int swap_cpu_notify(struct notifier_block *self,
 				    unsigned long action, void *hcpu)
 {
 	long cpu = (long) hcpu;
diff --git a/uprobe/arch/x86/swap-asm/swap_uprobes.c b/uprobe/arch/x86/swap-asm/swap_uprobes.c
index c6b5151..97daf85 100644
--- a/uprobe/arch/x86/swap-asm/swap_uprobes.c
+++ b/uprobe/arch/x86/swap-asm/swap_uprobes.c
@@ -617,7 +617,7 @@ static int uprobe_exceptions_notify(struct notifier_block *self,
 	struct die_args *args = (struct die_args *)data;
 	int ret = NOTIFY_DONE;
 
-	if (args->regs == NULL || !user_mode_vm(args->regs))
+	if (args->regs == NULL || !swap_user_mode(args->regs))
 		return ret;
 
 	switch (val) {