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review.evervolv.com / android_kernel_lge_hammerhead / 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 / . / arch / ppc64 / kernel / iSeries_proc.c
blob: 0cc58ddf48ded6bd265c43c067b2ffc1a1e1bdd3 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame^]1/*
2 * iSeries_proc.c
3 * Copyright (C) 2001 Kyle A. Lucke IBM Corporation
4 * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen IBM Corporation
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20#include <linux/init.h>
21#include <linux/proc_fs.h>
22#include <linux/seq_file.h>
23#include <linux/param.h> /* for HZ */
24#include <asm/paca.h>
25#include <asm/processor.h>
26#include <asm/time.h>
27#include <asm/lppaca.h>
28#include <asm/iSeries/ItLpQueue.h>
29#include <asm/iSeries/HvCallXm.h>
30#include <asm/iSeries/IoHriMainStore.h>
31#include <asm/iSeries/LparData.h>
32#include <asm/iSeries/iSeries_proc.h>
33
34static int __init iseries_proc_create(void)
35{
36 struct proc_dir_entry *e = proc_mkdir("iSeries", 0);
37 if (!e)
38 return 1;
39
40 return 0;
41}
42core_initcall(iseries_proc_create);
43
44static char *event_types[9] = {
45 "Hypervisor\t\t",
46 "Machine Facilities\t",
47 "Session Manager\t",
48 "SPD I/O\t\t",
49 "Virtual Bus\t\t",
50 "PCI I/O\t\t",
51 "RIO I/O\t\t",
52 "Virtual Lan\t\t",
53 "Virtual I/O\t\t"
54};
55
56static int proc_lpevents_show(struct seq_file *m, void *v)
57{
58 unsigned int i;
59
60 seq_printf(m, "LpEventQueue 0\n");
61 seq_printf(m, " events processed:\t%lu\n",
62 (unsigned long)xItLpQueue.xLpIntCount);
63
64 for (i = 0; i < 9; ++i)
65 seq_printf(m, " %s %10lu\n", event_types[i],
66 (unsigned long)xItLpQueue.xLpIntCountByType[i]);
67
68 seq_printf(m, "\n events processed by processor:\n");
69
70 for_each_online_cpu(i)
71 seq_printf(m, " CPU%02d %10u\n", i, paca[i].lpevent_count);
72
73 return 0;
74}
75
76static int proc_lpevents_open(struct inode *inode, struct file *file)
77{
78 return single_open(file, proc_lpevents_show, NULL);
79}
80
81static struct file_operations proc_lpevents_operations = {
82 .open = proc_lpevents_open,
83 .read = seq_read,
84 .llseek = seq_lseek,
85 .release = single_release,
86};
87
88static unsigned long startTitan = 0;
89static unsigned long startTb = 0;
90
91static int proc_titantod_show(struct seq_file *m, void *v)
92{
93 unsigned long tb0, titan_tod;
94
95 tb0 = get_tb();
96 titan_tod = HvCallXm_loadTod();
97
98 seq_printf(m, "Titan\n" );
99 seq_printf(m, " time base = %016lx\n", tb0);
100 seq_printf(m, " titan tod = %016lx\n", titan_tod);
101 seq_printf(m, " xProcFreq = %016x\n",
102 xIoHriProcessorVpd[0].xProcFreq);
103 seq_printf(m, " xTimeBaseFreq = %016x\n",
104 xIoHriProcessorVpd[0].xTimeBaseFreq);
105 seq_printf(m, " tb_ticks_per_jiffy = %lu\n", tb_ticks_per_jiffy);
106 seq_printf(m, " tb_ticks_per_usec = %lu\n", tb_ticks_per_usec);
107
108 if (!startTitan) {
109 startTitan = titan_tod;
110 startTb = tb0;
111 } else {
112 unsigned long titan_usec = (titan_tod - startTitan) >> 12;
113 unsigned long tb_ticks = (tb0 - startTb);
114 unsigned long titan_jiffies = titan_usec / (1000000/HZ);
115 unsigned long titan_jiff_usec = titan_jiffies * (1000000/HZ);
116 unsigned long titan_jiff_rem_usec = titan_usec - titan_jiff_usec;
117 unsigned long tb_jiffies = tb_ticks / tb_ticks_per_jiffy;
118 unsigned long tb_jiff_ticks = tb_jiffies * tb_ticks_per_jiffy;
119 unsigned long tb_jiff_rem_ticks = tb_ticks - tb_jiff_ticks;
120 unsigned long tb_jiff_rem_usec = tb_jiff_rem_ticks / tb_ticks_per_usec;
121 unsigned long new_tb_ticks_per_jiffy = (tb_ticks * (1000000/HZ))/titan_usec;
122
123 seq_printf(m, " titan elapsed = %lu uSec\n", titan_usec);
124 seq_printf(m, " tb elapsed = %lu ticks\n", tb_ticks);
125 seq_printf(m, " titan jiffies = %lu.%04lu \n", titan_jiffies,
126 titan_jiff_rem_usec);
127 seq_printf(m, " tb jiffies = %lu.%04lu\n", tb_jiffies,
128 tb_jiff_rem_usec);
129 seq_printf(m, " new tb_ticks_per_jiffy = %lu\n",
130 new_tb_ticks_per_jiffy);
131 }
132
133 return 0;
134}
135
136static int proc_titantod_open(struct inode *inode, struct file *file)
137{
138 return single_open(file, proc_titantod_show, NULL);
139}
140
141static struct file_operations proc_titantod_operations = {
142 .open = proc_titantod_open,
143 .read = seq_read,
144 .llseek = seq_lseek,
145 .release = single_release,
146};
147
148static int __init iseries_proc_init(void)
149{
150 struct proc_dir_entry *e;
151
152 e = create_proc_entry("iSeries/lpevents", S_IFREG|S_IRUGO, NULL);
153 if (e)
154 e->proc_fops = &proc_lpevents_operations;
155
156 e = create_proc_entry("iSeries/titanTod", S_IFREG|S_IRUGO, NULL);
157 if (e)
158 e->proc_fops = &proc_titantod_operations;
159
160 return 0;
161}
162__initcall(iseries_proc_init);