1*4882a593Smuzhiyun /**
2*4882a593Smuzhiyun * @file backtrace.c
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * @remark Copyright 2008 Tensilica Inc.
5*4882a593Smuzhiyun * Copyright (C) 2015 Cadence Design Systems Inc.
6*4882a593Smuzhiyun * @remark Read the file COPYING
7*4882a593Smuzhiyun *
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include <linux/oprofile.h>
11*4882a593Smuzhiyun #include <asm/ptrace.h>
12*4882a593Smuzhiyun #include <asm/stacktrace.h>
13*4882a593Smuzhiyun
xtensa_backtrace_cb(struct stackframe * frame,void * data)14*4882a593Smuzhiyun static int xtensa_backtrace_cb(struct stackframe *frame, void *data)
15*4882a593Smuzhiyun {
16*4882a593Smuzhiyun oprofile_add_trace(frame->pc);
17*4882a593Smuzhiyun return 0;
18*4882a593Smuzhiyun }
19*4882a593Smuzhiyun
xtensa_backtrace(struct pt_regs * const regs,unsigned int depth)20*4882a593Smuzhiyun void xtensa_backtrace(struct pt_regs * const regs, unsigned int depth)
21*4882a593Smuzhiyun {
22*4882a593Smuzhiyun if (user_mode(regs))
23*4882a593Smuzhiyun xtensa_backtrace_user(regs, depth, xtensa_backtrace_cb, NULL);
24*4882a593Smuzhiyun else
25*4882a593Smuzhiyun xtensa_backtrace_kernel(regs, depth, xtensa_backtrace_cb,
26*4882a593Smuzhiyun xtensa_backtrace_cb, NULL);
27*4882a593Smuzhiyun }
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