aboutsummaryrefslogtreecommitdiffstats
path: root/arch/x86/oprofile/init.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/oprofile/init.c')
-rw-r--r--arch/x86/oprofile/init.c30
1 files changed, 8 insertions, 22 deletions
diff --git a/arch/x86/oprofile/init.c b/arch/x86/oprofile/init.c
index f148cf652678..9e138d00ad36 100644
--- a/arch/x86/oprofile/init.c
+++ b/arch/x86/oprofile/init.c
@@ -16,37 +16,23 @@
16 * with the NMI mode driver. 16 * with the NMI mode driver.
17 */ 17 */
18 18
19#ifdef CONFIG_X86_LOCAL_APIC
19extern int op_nmi_init(struct oprofile_operations *ops); 20extern int op_nmi_init(struct oprofile_operations *ops);
20extern int op_nmi_timer_init(struct oprofile_operations *ops);
21extern void op_nmi_exit(void); 21extern void op_nmi_exit(void);
22extern void x86_backtrace(struct pt_regs * const regs, unsigned int depth); 22#else
23static int op_nmi_init(struct oprofile_operations *ops) { return -ENODEV; }
24static void op_nmi_exit(void) { }
25#endif
23 26
24static int nmi_timer; 27extern void x86_backtrace(struct pt_regs * const regs, unsigned int depth);
25 28
26int __init oprofile_arch_init(struct oprofile_operations *ops) 29int __init oprofile_arch_init(struct oprofile_operations *ops)
27{ 30{
28 int ret;
29
30 ret = -ENODEV;
31
32#ifdef CONFIG_X86_LOCAL_APIC
33 ret = op_nmi_init(ops);
34#endif
35 nmi_timer = (ret != 0);
36#ifdef CONFIG_X86_IO_APIC
37 if (nmi_timer)
38 ret = op_nmi_timer_init(ops);
39#endif
40 ops->backtrace = x86_backtrace; 31 ops->backtrace = x86_backtrace;
41 32 return op_nmi_init(ops);
42 return ret;
43} 33}
44 34
45
46void oprofile_arch_exit(void) 35void oprofile_arch_exit(void)
47{ 36{
48#ifdef CONFIG_X86_LOCAL_APIC 37 op_nmi_exit();
49 if (!nmi_timer)
50 op_nmi_exit();
51#endif
52} 38}