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authorStephen Rothwell <sfr@canb.auug.org.au>2005-09-19 09:24:08 -0400
committerPaul Mackerras <paulus@samba.org>2005-09-21 05:21:08 -0400
commit86a5cddbd9676b129cfa2ed7a1a11759d3b2b512 (patch)
tree7d5d4fdda4df9067c43870f5dcb3d5c714fdf227 /arch/ppc/oprofile
parent654810ec899ea5f2fc2138fca1793b603d481ff4 (diff)
[PATCH] powerpc: merge the rest of arch/ppc*/oprofile
- merge common.c - move model specific files - remove stub Makefiles - clean up arch/ppc*/Makefile Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/ppc/oprofile')
-rw-r--r--arch/ppc/oprofile/Makefile1
-rw-r--r--arch/ppc/oprofile/common.c160
-rw-r--r--arch/ppc/oprofile/op_model_fsl_booke.c183
3 files changed, 0 insertions, 344 deletions
diff --git a/arch/ppc/oprofile/Makefile b/arch/ppc/oprofile/Makefile
deleted file mode 100644
index 4bf75b776c5b..000000000000
--- a/arch/ppc/oprofile/Makefile
+++ /dev/null
@@ -1 +0,0 @@
1include arch/powerpc/oprofile/Makefile
diff --git a/arch/ppc/oprofile/common.c b/arch/ppc/oprofile/common.c
deleted file mode 100644
index f63bee23f20c..000000000000
--- a/arch/ppc/oprofile/common.c
+++ /dev/null
@@ -1,160 +0,0 @@
1/*
2 * PPC 32 oprofile support
3 * Based on PPC64 oprofile support
4 * Copyright (C) 2004 Anton Blanchard <anton@au.ibm.com>, IBM
5 *
6 * Copyright (C) Freescale Semiconductor, Inc 2004
7 *
8 * Author: Andy Fleming
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version
13 * 2 of the License, or (at your option) any later version.
14 */
15
16#include <linux/oprofile.h>
17#include <linux/slab.h>
18#include <linux/init.h>
19#include <linux/smp.h>
20#include <linux/errno.h>
21#include <asm/ptrace.h>
22#include <asm/system.h>
23#include <asm/perfmon.h>
24#include <asm/cputable.h>
25#include <asm/oprofile_impl.h>
26
27static struct op_powerpc_model *model;
28
29static struct op_counter_config ctr[OP_MAX_COUNTER];
30static struct op_system_config sys;
31
32static void op_handle_interrupt(struct pt_regs *regs)
33{
34 model->handle_interrupt(regs, ctr);
35}
36
37static int op_ppc32_setup(void)
38{
39 /* Install our interrupt handler into the existing hook. */
40 if(request_perfmon_irq(&op_handle_interrupt))
41 return -EBUSY;
42
43 mb();
44
45 /* Pre-compute the values to stuff in the hardware registers. */
46 model->reg_setup(ctr, &sys, model->num_counters);
47
48#if 0
49 /* FIXME: Make multi-cpu work */
50 /* Configure the registers on all cpus. */
51 on_each_cpu(model->reg_setup, NULL, 0, 1);
52#endif
53
54 return 0;
55}
56
57static void op_ppc32_shutdown(void)
58{
59 mb();
60
61 /* Remove our interrupt handler. We may be removing this module. */
62 free_perfmon_irq();
63}
64
65static void op_ppc32_cpu_start(void *dummy)
66{
67 model->start(ctr);
68}
69
70static int op_ppc32_start(void)
71{
72 on_each_cpu(op_ppc32_cpu_start, NULL, 0, 1);
73 return 0;
74}
75
76static inline void op_ppc32_cpu_stop(void *dummy)
77{
78 model->stop();
79}
80
81static void op_ppc32_stop(void)
82{
83 on_each_cpu(op_ppc32_cpu_stop, NULL, 0, 1);
84}
85
86static int op_ppc32_create_files(struct super_block *sb, struct dentry *root)
87{
88 int i;
89
90 for (i = 0; i < model->num_counters; ++i) {
91 struct dentry *dir;
92 char buf[3];
93
94 snprintf(buf, sizeof buf, "%d", i);
95 dir = oprofilefs_mkdir(sb, root, buf);
96
97 oprofilefs_create_ulong(sb, dir, "enabled", &ctr[i].enabled);
98 oprofilefs_create_ulong(sb, dir, "event", &ctr[i].event);
99 oprofilefs_create_ulong(sb, dir, "count", &ctr[i].count);
100 oprofilefs_create_ulong(sb, dir, "kernel", &ctr[i].kernel);
101 oprofilefs_create_ulong(sb, dir, "user", &ctr[i].user);
102
103 /* FIXME: Not sure if this is used */
104 oprofilefs_create_ulong(sb, dir, "unit_mask", &ctr[i].unit_mask);
105 }
106
107 oprofilefs_create_ulong(sb, root, "enable_kernel", &sys.enable_kernel);
108 oprofilefs_create_ulong(sb, root, "enable_user", &sys.enable_user);
109
110 /* Default to tracing both kernel and user */
111 sys.enable_kernel = 1;
112 sys.enable_user = 1;
113
114 return 0;
115}
116
117static struct oprofile_operations oprof_ppc32_ops = {
118 .create_files = op_ppc32_create_files,
119 .setup = op_ppc32_setup,
120 .shutdown = op_ppc32_shutdown,
121 .start = op_ppc32_start,
122 .stop = op_ppc32_stop,
123 .cpu_type = NULL /* To be filled in below. */
124};
125
126int __init oprofile_arch_init(struct oprofile_operations *ops)
127{
128 char *name;
129 int cpu_id = smp_processor_id();
130
131#ifdef CONFIG_FSL_BOOKE
132 model = &op_model_fsl_booke;
133#else
134 return -ENODEV;
135#endif
136
137 name = kmalloc(32, GFP_KERNEL);
138
139 if (NULL == name)
140 return -ENOMEM;
141
142 sprintf(name, "ppc/%s", cur_cpu_spec[cpu_id]->cpu_name);
143
144 oprof_ppc32_ops.cpu_type = name;
145
146 model->num_counters = cur_cpu_spec[cpu_id]->num_pmcs;
147
148 *ops = oprof_ppc32_ops;
149
150 printk(KERN_INFO "oprofile: using %s performance monitoring.\n",
151 oprof_ppc32_ops.cpu_type);
152
153 return 0;
154}
155
156void oprofile_arch_exit(void)
157{
158 kfree(oprof_ppc32_ops.cpu_type);
159 oprof_ppc32_ops.cpu_type = NULL;
160}
diff --git a/arch/ppc/oprofile/op_model_fsl_booke.c b/arch/ppc/oprofile/op_model_fsl_booke.c
deleted file mode 100644
index 1917f8df8a8b..000000000000
--- a/arch/ppc/oprofile/op_model_fsl_booke.c
+++ /dev/null
@@ -1,183 +0,0 @@
1/*
2 * oprofile/op_model_e500.c
3 *
4 * Freescale Book-E oprofile support, based on ppc64 oprofile support
5 * Copyright (C) 2004 Anton Blanchard <anton@au.ibm.com>, IBM
6 *
7 * Copyright (c) 2004 Freescale Semiconductor, Inc
8 *
9 * Author: Andy Fleming
10 * Maintainer: Kumar Gala <Kumar.Gala@freescale.com>
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version
15 * 2 of the License, or (at your option) any later version.
16 */
17
18#include <linux/oprofile.h>
19#include <linux/init.h>
20#include <linux/smp.h>
21#include <asm/ptrace.h>
22#include <asm/system.h>
23#include <asm/processor.h>
24#include <asm/cputable.h>
25#include <asm/reg_booke.h>
26#include <asm/page.h>
27#include <asm/perfmon.h>
28#include <asm/oprofile_impl.h>
29
30static unsigned long reset_value[OP_MAX_COUNTER];
31
32static int num_counters;
33static int oprofile_running;
34
35static inline unsigned int ctr_read(unsigned int i)
36{
37 switch(i) {
38 case 0:
39 return mfpmr(PMRN_PMC0);
40 case 1:
41 return mfpmr(PMRN_PMC1);
42 case 2:
43 return mfpmr(PMRN_PMC2);
44 case 3:
45 return mfpmr(PMRN_PMC3);
46 default:
47 return 0;
48 }
49}
50
51static inline void ctr_write(unsigned int i, unsigned int val)
52{
53 switch(i) {
54 case 0:
55 mtpmr(PMRN_PMC0, val);
56 break;
57 case 1:
58 mtpmr(PMRN_PMC1, val);
59 break;
60 case 2:
61 mtpmr(PMRN_PMC2, val);
62 break;
63 case 3:
64 mtpmr(PMRN_PMC3, val);
65 break;
66 default:
67 break;
68 }
69}
70
71
72static void fsl_booke_reg_setup(struct op_counter_config *ctr,
73 struct op_system_config *sys,
74 int num_ctrs)
75{
76 int i;
77
78 num_counters = num_ctrs;
79
80 /* freeze all counters */
81 pmc_stop_ctrs();
82
83 /* Our counters count up, and "count" refers to
84 * how much before the next interrupt, and we interrupt
85 * on overflow. So we calculate the starting value
86 * which will give us "count" until overflow.
87 * Then we set the events on the enabled counters */
88 for (i = 0; i < num_counters; ++i) {
89 reset_value[i] = 0x80000000UL - ctr[i].count;
90
91 init_pmc_stop(i);
92
93 set_pmc_event(i, ctr[i].event);
94
95 set_pmc_user_kernel(i, ctr[i].user, ctr[i].kernel);
96 }
97}
98
99static void fsl_booke_start(struct op_counter_config *ctr)
100{
101 int i;
102
103 mtmsr(mfmsr() | MSR_PMM);
104
105 for (i = 0; i < num_counters; ++i) {
106 if (ctr[i].enabled) {
107 ctr_write(i, reset_value[i]);
108 /* Set Each enabled counterd to only
109 * count when the Mark bit is not set */
110 set_pmc_marked(i, 1, 0);
111 pmc_start_ctr(i, 1);
112 } else {
113 ctr_write(i, 0);
114
115 /* Set the ctr to be stopped */
116 pmc_start_ctr(i, 0);
117 }
118 }
119
120 /* Clear the freeze bit, and enable the interrupt.
121 * The counters won't actually start until the rfi clears
122 * the PMM bit */
123 pmc_start_ctrs(1);
124
125 oprofile_running = 1;
126
127 pr_debug("start on cpu %d, pmgc0 %x\n", smp_processor_id(),
128 mfpmr(PMRN_PMGC0));
129}
130
131static void fsl_booke_stop(void)
132{
133 /* freeze counters */
134 pmc_stop_ctrs();
135
136 oprofile_running = 0;
137
138 pr_debug("stop on cpu %d, pmgc0 %x\n", smp_processor_id(),
139 mfpmr(PMRN_PMGC0));
140
141 mb();
142}
143
144
145static void fsl_booke_handle_interrupt(struct pt_regs *regs,
146 struct op_counter_config *ctr)
147{
148 unsigned long pc;
149 int is_kernel;
150 int val;
151 int i;
152
153 /* set the PMM bit (see comment below) */
154 mtmsr(mfmsr() | MSR_PMM);
155
156 pc = regs->nip;
157 is_kernel = (pc >= KERNELBASE);
158
159 for (i = 0; i < num_counters; ++i) {
160 val = ctr_read(i);
161 if (val < 0) {
162 if (oprofile_running && ctr[i].enabled) {
163 oprofile_add_pc(pc, is_kernel, i);
164 ctr_write(i, reset_value[i]);
165 } else {
166 ctr_write(i, 0);
167 }
168 }
169 }
170
171 /* The freeze bit was set by the interrupt. */
172 /* Clear the freeze bit, and reenable the interrupt.
173 * The counters won't actually start until the rfi clears
174 * the PMM bit */
175 pmc_start_ctrs(1);
176}
177
178struct op_powerpc_model op_model_fsl_booke = {
179 .reg_setup = fsl_booke_reg_setup,
180 .start = fsl_booke_start,
181 .stop = fsl_booke_stop,
182 .handle_interrupt = fsl_booke_handle_interrupt,
183};
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