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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2012-08-07 18:12:28 +0200
committerAnton Arapov <anton@redhat.com>2012-10-29 11:23:41 +0100
commit3aeb015653001c4d41ffe26413e494852cc728e6 (patch)
treee22cda457b5ff93685561c04061897583a8f7d41 /include/linux/uprobes.h
parent054f95d46b0bd10d239e43077facf9870e0d3cbe (diff)
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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] http://lkml.kernel.org/r/20120730141638.GA5306@redhat.com 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 <bigeasy@linutronix.de> Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Diffstat (limited to 'include/linux/uprobes.h')
-rw-r--r--include/linux/uprobes.h2
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);