path: root/include/linux
diff options
authorSebastian Andrzej Siewior <>2012-08-07 18:12:28 +0200
committerAnton Arapov <>2012-10-29 11:23:41 +0100
commit3aeb015653001c4d41ffe26413e494852cc728e6 (patch)
treee22cda457b5ff93685561c04061897583a8f7d41 /include/linux
parent054f95d46b0bd10d239e43077facf9870e0d3cbe (diff)
uprobes: Introduce arch_uprobe_enable/disable_step()
As Oleg pointed out in [0] uprobe should not use the ptrace interface for enabling/disabling single stepping. [0] Add the new "__weak arch" helpers which simply call user_*_single_step() as a preparation. This is only needed to not break the powerpc port, we will fold this logic into arch_uprobe_pre/post_xol() hooks later. We should also change handle_singlestep(), _disable_step(&uprobe->arch) should be called before put_uprobe(). Signed-off-by: Sebastian Andrzej Siewior <> Signed-off-by: Oleg Nesterov <> Acked-by: Srikar Dronamraju <>
Diffstat (limited to 'include/linux')
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h
index 6d4fe79a1a6..e6f0331e3d4 100644
--- a/include/linux/uprobes.h
+++ b/include/linux/uprobes.h
@@ -112,6 +112,8 @@ 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);
extern unsigned long __weak uprobe_get_swbp_addr(struct pt_regs *regs);
+extern void __weak arch_uprobe_enable_step(struct arch_uprobe *arch);
+extern void __weak arch_uprobe_disable_step(struct arch_uprobe *arch);
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);