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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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5fdf377d80
Old oprofile interface will share user stack tracing with new perf interface. Move oprofile user/kernel stack tracing to stacktrace.c to make it possible. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
28 lines
619 B
C
28 lines
619 B
C
/**
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* @file backtrace.c
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*
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* @remark Copyright 2008 Tensilica Inc.
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* Copyright (C) 2015 Cadence Design Systems Inc.
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* @remark Read the file COPYING
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*
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*/
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#include <linux/oprofile.h>
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#include <asm/ptrace.h>
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#include <asm/stacktrace.h>
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static int xtensa_backtrace_cb(struct stackframe *frame, void *data)
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{
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oprofile_add_trace(frame->pc);
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return 0;
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}
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void xtensa_backtrace(struct pt_regs * const regs, unsigned int depth)
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{
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if (user_mode(regs))
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xtensa_backtrace_user(regs, depth, xtensa_backtrace_cb, NULL);
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else
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xtensa_backtrace_kernel(regs, depth, xtensa_backtrace_cb,
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xtensa_backtrace_cb, NULL);
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}
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