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-rw-r--r--arch/ppc/kernel/perfmon.c96
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
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@@ -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 */
37DEFINE_SPINLOCK(perfmon_lock);
38
39#if defined (CONFIG_FSL_BOOKE) && !defined (CONFIG_E200)
40static 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 */
50static 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
58static void dummy_perf(struct pt_regs *regs)
59{
60}
61#endif
62
63void (*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 */
67int 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
85void release_pmc_hardware(void)
86{
87 spin_lock(&perfmon_lock);
88
89 perf_irq = dummy_perf;
90
91 spin_unlock(&perfmon_lock);
92}
93
94EXPORT_SYMBOL(perf_irq);
95EXPORT_SYMBOL(reserve_pmc_hardware);
96EXPORT_SYMBOL(release_pmc_hardware);