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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2012-08-07 18:12:28 +0200 |
|---|---|---|
| committer | Oleg Nesterov <oleg@redhat.com> | 2012-09-15 17:37:28 +0200 |
| commit | 9d778782266f95e5c6ec43ed8195ba331c821018 (patch) | |
| tree | 99872945803a76d1ff9e438cf48864cd0a5d9bf4 /include/linux | |
| parent | 499a4f3ec057a0f79636cc3c1e581bb6e977a30f (diff) | |
| download | linux-9d778782266f95e5c6ec43ed8195ba331c821018.tar.gz linux-9d778782266f95e5c6ec43ed8195ba331c821018.tar.bz2 linux-9d778782266f95e5c6ec43ed8195ba331c821018.zip | |
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')
| -rw-r--r-- | include/linux/uprobes.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h index 6d4fe79a1a6a..e6f0331e3d45 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); |