diff options
Diffstat (limited to 'include/linux/uprobes.h')
| -rw-r--r-- | include/linux/uprobes.h | 52 |
1 files changed, 20 insertions, 32 deletions
diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h index 319eae70fe84..e32251e00e62 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) { } |