Lines Matching refs:tail
23 user_backtrace(struct frame_tail __user *tail, in user_backtrace() argument
31 if (!access_ok(tail, sizeof(buftail))) in user_backtrace()
35 err = __copy_from_user_inatomic(&buftail, tail, sizeof(buftail)); in user_backtrace()
49 if (tail >= buftail.fp) in user_backtrace()
71 compat_user_backtrace(struct compat_frame_tail __user *tail, in compat_user_backtrace() argument
78 if (!access_ok(tail, sizeof(buftail))) in compat_user_backtrace()
82 err = __copy_from_user_inatomic(&buftail, tail, sizeof(buftail)); in compat_user_backtrace()
94 if (tail + 1 >= (struct compat_frame_tail __user *) in compat_user_backtrace()
114 struct frame_tail __user *tail; in perf_callchain_user() local
116 tail = (struct frame_tail __user *)regs->regs[29]; in perf_callchain_user()
119 tail && !((unsigned long)tail & 0x7)) in perf_callchain_user()
120 tail = user_backtrace(tail, entry); in perf_callchain_user()
124 struct compat_frame_tail __user *tail; in perf_callchain_user() local
126 tail = (struct compat_frame_tail __user *)regs->compat_fp - 1; in perf_callchain_user()
129 tail && !((unsigned long)tail & 0x3)) in perf_callchain_user()
130 tail = compat_user_backtrace(tail, entry); in perf_callchain_user()