diff options
Diffstat (limited to 'arch/ppc/kernel/perfmon.c')
-rw-r--r-- | arch/ppc/kernel/perfmon.c | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/arch/ppc/kernel/perfmon.c b/arch/ppc/kernel/perfmon.c deleted file mode 100644 index c9a38dd0cdc4..000000000000 --- a/arch/ppc/kernel/perfmon.c +++ /dev/null | |||
@@ -1,96 +0,0 @@ | |||
1 | /* kernel/perfmon.c | ||
2 | * PPC 32 Performance Monitor Infrastructure | ||
3 | * | ||
4 | * Author: Andy Fleming | ||
5 | * Copyright (c) 2004 Freescale Semiconductor, Inc | ||
6 | * | ||
7 | * This program is free software; you can redistribute it and/or | ||
8 | * modify it under the terms of the GNU General Public License | ||
9 | * as published by the Free Software Foundation; either version | ||
10 | * 2 of the License, or (at your option) any later version. | ||
11 | */ | ||
12 | |||
13 | #include <linux/errno.h> | ||
14 | #include <linux/sched.h> | ||
15 | #include <linux/kernel.h> | ||
16 | #include <linux/mm.h> | ||
17 | #include <linux/stddef.h> | ||
18 | #include <linux/unistd.h> | ||
19 | #include <linux/ptrace.h> | ||
20 | #include <linux/slab.h> | ||
21 | #include <linux/user.h> | ||
22 | #include <linux/a.out.h> | ||
23 | #include <linux/interrupt.h> | ||
24 | #include <linux/config.h> | ||
25 | #include <linux/init.h> | ||
26 | #include <linux/module.h> | ||
27 | #include <linux/prctl.h> | ||
28 | |||
29 | #include <asm/pgtable.h> | ||
30 | #include <asm/uaccess.h> | ||
31 | #include <asm/system.h> | ||
32 | #include <asm/io.h> | ||
33 | #include <asm/reg.h> | ||
34 | #include <asm/xmon.h> | ||
35 | |||
36 | /* A lock to regulate grabbing the interrupt */ | ||
37 | DEFINE_SPINLOCK(perfmon_lock); | ||
38 | |||
39 | #if defined (CONFIG_FSL_BOOKE) && !defined (CONFIG_E200) | ||
40 | static void dummy_perf(struct pt_regs *regs) | ||
41 | { | ||
42 | unsigned int pmgc0 = mfpmr(PMRN_PMGC0); | ||
43 | |||
44 | pmgc0 &= ~PMGC0_PMIE; | ||
45 | mtpmr(PMRN_PMGC0, pmgc0); | ||
46 | } | ||
47 | |||
48 | #elif defined(CONFIG_6xx) | ||
49 | /* Ensure exceptions are disabled */ | ||
50 | static void dummy_perf(struct pt_regs *regs) | ||
51 | { | ||
52 | unsigned int mmcr0 = mfspr(SPRN_MMCR0); | ||
53 | |||
54 | mmcr0 &= ~MMCR0_PMXE; | ||
55 | mtspr(SPRN_MMCR0, mmcr0); | ||
56 | } | ||
57 | #else | ||
58 | static void dummy_perf(struct pt_regs *regs) | ||
59 | { | ||
60 | } | ||
61 | #endif | ||
62 | |||
63 | void (*perf_irq)(struct pt_regs *) = dummy_perf; | ||
64 | |||
65 | /* Grab the interrupt, if it's free. | ||
66 | * Returns 0 on success, -1 if the interrupt is taken already */ | ||
67 | int reserve_pmc_hardware(void (*handler)(struct pt_regs *)) | ||
68 | { | ||
69 | int err = 0; | ||
70 | |||
71 | spin_lock(&perfmon_lock); | ||
72 | |||
73 | if (perf_irq == dummy_perf) | ||
74 | perf_irq = handler; | ||
75 | else { | ||
76 | pr_info("perfmon irq already handled by %p\n", perf_irq); | ||
77 | err = -EBUSY; | ||
78 | } | ||
79 | |||
80 | spin_unlock(&perfmon_lock); | ||
81 | |||
82 | return err; | ||
83 | } | ||
84 | |||
85 | void release_pmc_hardware(void) | ||
86 | { | ||
87 | spin_lock(&perfmon_lock); | ||
88 | |||
89 | perf_irq = dummy_perf; | ||
90 | |||
91 | spin_unlock(&perfmon_lock); | ||
92 | } | ||
93 | |||
94 | EXPORT_SYMBOL(perf_irq); | ||
95 | EXPORT_SYMBOL(reserve_pmc_hardware); | ||
96 | EXPORT_SYMBOL(release_pmc_hardware); | ||