diff options
Diffstat (limited to 'arch/x86/kernel/step.c')
| -rw-r--r-- | arch/x86/kernel/step.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/arch/x86/kernel/step.c b/arch/x86/kernel/step.c index 6732272e347..243bff650ca 100644 --- a/arch/x86/kernel/step.c +++ b/arch/x86/kernel/step.c @@ -135,7 +135,7 @@ void user_enable_single_step(struct task_struct *child) if (is_setting_trap_flag(child, regs)) return; - child->ptrace |= PT_DTRACE; + set_tsk_thread_flag(child, TIF_FORCED_TF); } void user_disable_single_step(struct task_struct *child) @@ -144,9 +144,6 @@ void user_disable_single_step(struct task_struct *child) clear_tsk_thread_flag(child, TIF_SINGLESTEP); /* But touch TF only if it was set by us.. */ - if (child->ptrace & PT_DTRACE) { - struct pt_regs *regs = task_pt_regs(child); - regs->eflags &= ~X86_EFLAGS_TF; - child->ptrace &= ~PT_DTRACE; - } + if (test_and_clear_tsk_thread_flag(child, TIF_FORCED_TF)) + task_pt_regs(child)->eflags &= ~X86_EFLAGS_TF; } |