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49 lines
924 B
49 lines
924 B
20 years ago
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/**
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* @file init.c
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*
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* @remark Copyright 2002 OProfile authors
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* @remark Read the file COPYING
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*
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* @author John Levon <levon@movementarian.org>
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*/
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#include <linux/oprofile.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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/* We support CPUs that have performance counters like the Pentium Pro
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* with the NMI mode driver.
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*/
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extern int nmi_init(struct oprofile_operations * ops);
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extern int nmi_timer_init(struct oprofile_operations * ops);
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extern void nmi_exit(void);
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extern void x86_backtrace(struct pt_regs * const regs, unsigned int depth);
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int __init oprofile_arch_init(struct oprofile_operations * ops)
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{
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int ret;
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ret = -ENODEV;
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#ifdef CONFIG_X86_LOCAL_APIC
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ret = nmi_init(ops);
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#endif
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#ifdef CONFIG_X86_IO_APIC
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if (ret < 0)
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ret = nmi_timer_init(ops);
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#endif
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ops->backtrace = x86_backtrace;
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return ret;
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}
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void oprofile_arch_exit(void)
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{
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#ifdef CONFIG_X86_LOCAL_APIC
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nmi_exit();
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#endif
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}
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