summaryrefslogtreecommitdiffstats
path: root/include/linux/uprobes.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/uprobes.h')
-rw-r--r--include/linux/uprobes.h52
1 files changed, 20 insertions, 32 deletions
diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h
index 319eae7..e32251e 100644
--- a/include/linux/uprobes.h
+++ b/include/linux/uprobes.h
@@ -26,16 +26,13 @@
#include <linux/errno.h>
#include <linux/rbtree.h>
+#include <linux/types.h>
struct vm_area_struct;
struct mm_struct;
struct inode;
struct notifier_block;
-#ifdef CONFIG_ARCH_SUPPORTS_UPROBES
-# include <asm/uprobes.h>
-#endif
-
#define UPROBE_HANDLER_REMOVE 1
#define UPROBE_HANDLER_MASK 1
@@ -60,6 +57,8 @@ struct uprobe_consumer {
};
#ifdef CONFIG_UPROBES
+#include <asm/uprobes.h>
+
enum uprobe_task_state {
UTASK_RUNNING,
UTASK_SSTEP,
@@ -72,35 +71,28 @@ enum uprobe_task_state {
*/
struct uprobe_task {
enum uprobe_task_state state;
- struct arch_uprobe_task autask;
- struct return_instance *return_instances;
- unsigned int depth;
- struct uprobe *active_uprobe;
+ union {
+ struct {
+ struct arch_uprobe_task autask;
+ unsigned long vaddr;
+ };
+ struct {
+ struct callback_head dup_xol_work;
+ unsigned long dup_xol_addr;
+ };
+ };
+
+ struct uprobe *active_uprobe;
unsigned long xol_vaddr;
- unsigned long vaddr;
-};
-/*
- * On a breakpoint hit, thread contests for a slot. It frees the
- * slot after singlestep. Currently a fixed number of slots are
- * allocated.
- */
-struct xol_area {
- wait_queue_head_t wq; /* if all slots are busy */
- atomic_t slot_count; /* number of in-use slots */
- unsigned long *bitmap; /* 0 = free slot */
- struct page *page;
-
- /*
- * We keep the vma's vm_start rather than a pointer to the vma
- * itself. The probed process or a naughty kernel module could make
- * the vma go away, and we must handle that reasonably gracefully.
- */
- unsigned long vaddr; /* Page(s) of instruction slots */
+ struct return_instance *return_instances;
+ unsigned int depth;
};
+struct xol_area;
+
struct uprobes_state {
struct xol_area *xol_area;
};
@@ -109,6 +101,7 @@ extern int __weak set_swbp(struct arch_uprobe *aup, struct mm_struct *mm, unsign
extern int __weak set_orig_insn(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long vaddr);
extern bool __weak is_swbp_insn(uprobe_opcode_t *insn);
extern bool __weak is_trap_insn(uprobe_opcode_t *insn);
+extern unsigned long __weak uprobe_get_swbp_addr(struct pt_regs *regs);
extern int uprobe_write_opcode(struct mm_struct *mm, unsigned long vaddr, uprobe_opcode_t);
extern int uprobe_register(struct inode *inode, loff_t offset, struct uprobe_consumer *uc);
extern int uprobe_apply(struct inode *inode, loff_t offset, struct uprobe_consumer *uc, bool);
@@ -120,7 +113,6 @@ extern void uprobe_end_dup_mmap(void);
extern void uprobe_dup_mmap(struct mm_struct *oldmm, struct mm_struct *newmm);
extern void uprobe_free_utask(struct task_struct *t);
extern void uprobe_copy_process(struct task_struct *t, unsigned long flags);
-extern unsigned long __weak uprobe_get_swbp_addr(struct pt_regs *regs);
extern int uprobe_post_sstep_notifier(struct pt_regs *regs);
extern int uprobe_pre_sstep_notifier(struct pt_regs *regs);
extern void uprobe_notify_resume(struct pt_regs *regs);
@@ -176,10 +168,6 @@ static inline bool uprobe_deny_signal(void)
{
return false;
}
-static inline unsigned long uprobe_get_swbp_addr(struct pt_regs *regs)
-{
- return 0;
-}
static inline void uprobe_free_utask(struct task_struct *t)
{
}
OpenPOWER on IntegriCloud