5113f6f70
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kernel add
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/**
* @file backtrace.c
*
* @remark Copyright 2008 Tensilica Inc.
* Copyright (C) 2015 Cadence Design Systems Inc.
* @remark Read the file COPYING
*
*/
#include <linux/oprofile.h>
#include <asm/ptrace.h>
#include <asm/stacktrace.h>
static int xtensa_backtrace_cb(struct stackframe *frame, void *data)
{
oprofile_add_trace(frame->pc);
return 0;
}
void xtensa_backtrace(struct pt_regs * const regs, unsigned int depth)
{
if (user_mode(regs))
xtensa_backtrace_user(regs, depth, xtensa_backtrace_cb, NULL);
else
xtensa_backtrace_kernel(regs, depth, xtensa_backtrace_cb,
xtensa_backtrace_cb, NULL);
}
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