[deliverable/linux.git] / arch / x86 / oprofile / init.c

/**
 * @file init.c
 *
 * @remark Copyright 2002 OProfile authors
 * @remark Read the file COPYING
 *
 * @author John Levon <levon@movementarian.org>
 */

#include <linux/oprofile.h>
#include <linux/init.h>
#include <linux/errno.h>

/*
 * We support CPUs that have performance counters like the Pentium Pro
 * with the NMI mode driver.
 */

#ifdef CONFIG_X86_LOCAL_APIC
extern int op_nmi_init(struct oprofile_operations *ops);
extern void op_nmi_exit(void);
#else
static int op_nmi_init(struct oprofile_operations *ops) { return -ENODEV; }
static void op_nmi_exit(void) { }
#endif

extern void x86_backtrace(struct pt_regs * const regs, unsigned int depth);

int __init oprofile_arch_init(struct oprofile_operations *ops)
{
	ops->backtrace = x86_backtrace;
	return op_nmi_init(ops);
}

void oprofile_arch_exit(void)
{
	op_nmi_exit();
}
Commit	Line	Data
1da177e4 LT	1	/**
	2	* @file init.c
	3	*
	4	* @remark Copyright 2002 OProfile authors
	5	* @remark Read the file COPYING
	6	*
	7	* @author John Levon <levon@movementarian.org>
	8	*/
	9
	10	#include <linux/oprofile.h>
	11	#include <linux/init.h>
	12	#include <linux/errno.h>
d717ca84 PC	13
	14	/*
	15	* We support CPUs that have performance counters like the Pentium Pro
1da177e4 LT	16	* with the NMI mode driver.
1da177e4 LT	17	*/
d717ca84	18
dcfce4a0	19	#ifdef CONFIG_X86_LOCAL_APIC
d717ca84	20	extern int op_nmi_init(struct oprofile_operations *ops);
96d0821c	21	extern void op_nmi_exit(void);
dcfce4a0 RR	22	#else
	23	static int op_nmi_init(struct oprofile_operations *ops) { return -ENODEV; }
	24	static void op_nmi_exit(void) { }
	25	#endif
1da177e4	26
dcfce4a0	27	extern void x86_backtrace(struct pt_regs * const regs, unsigned int depth);
1da177e4	28
d717ca84	29	int __init oprofile_arch_init(struct oprofile_operations *ops)
1da177e4	30	{
1da177e4	31	ops->backtrace = x86_backtrace;
dcfce4a0	32	return op_nmi_init(ops);
1da177e4 LT	33	}
1da177e4 LT	34
1da177e4 LT	35	void oprofile_arch_exit(void)
1da177e4 LT	36	{
dcfce4a0	37	op_nmi_exit();
1da177e4	38	}