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-rw-r--r--arch/s390/hypfs/Makefile2
-rw-r--r--arch/s390/hypfs/hypfs.h9
-rw-r--r--arch/s390/hypfs/hypfs_diag.h16
-rw-r--r--arch/s390/hypfs/hypfs_vm.c231
-rw-r--r--arch/s390/hypfs/inode.c31
5 files changed, 262 insertions, 27 deletions
diff --git a/arch/s390/hypfs/Makefile b/arch/s390/hypfs/Makefile
index f4b00cd81f7c..b08d2abf6178 100644
--- a/arch/s390/hypfs/Makefile
+++ b/arch/s390/hypfs/Makefile
@@ -4,4 +4,4 @@
4 4
5obj-$(CONFIG_S390_HYPFS_FS) += s390_hypfs.o 5obj-$(CONFIG_S390_HYPFS_FS) += s390_hypfs.o
6 6
7s390_hypfs-objs := inode.o hypfs_diag.o 7s390_hypfs-objs := inode.o hypfs_diag.o hypfs_vm.o
diff --git a/arch/s390/hypfs/hypfs.h b/arch/s390/hypfs/hypfs.h
index f3dbd91965c6..aea572009d60 100644
--- a/arch/s390/hypfs/hypfs.h
+++ b/arch/s390/hypfs/hypfs.h
@@ -27,4 +27,13 @@ extern struct dentry *hypfs_create_str(struct super_block *sb,
27 struct dentry *dir, const char *name, 27 struct dentry *dir, const char *name,
28 char *string); 28 char *string);
29 29
30/* LPAR Hypervisor */
31extern int hypfs_diag_init(void);
32extern void hypfs_diag_exit(void);
33extern int hypfs_diag_create_files(struct super_block *sb, struct dentry *root);
34
35/* VM Hypervisor */
36extern int hypfs_vm_init(void);
37extern int hypfs_vm_create_files(struct super_block *sb, struct dentry *root);
38
30#endif /* _HYPFS_H_ */ 39#endif /* _HYPFS_H_ */
diff --git a/arch/s390/hypfs/hypfs_diag.h b/arch/s390/hypfs/hypfs_diag.h
deleted file mode 100644
index 256b384aebe1..000000000000
--- a/arch/s390/hypfs/hypfs_diag.h
+++ /dev/null
@@ -1,16 +0,0 @@
1/*
2 * arch/s390/hypfs_diag.h
3 * Hypervisor filesystem for Linux on s390.
4 *
5 * Copyright (C) IBM Corp. 2006
6 * Author(s): Michael Holzheu <holzheu@de.ibm.com>
7 */
8
9#ifndef _HYPFS_DIAG_H_
10#define _HYPFS_DIAG_H_
11
12extern int hypfs_diag_init(void);
13extern void hypfs_diag_exit(void);
14extern int hypfs_diag_create_files(struct super_block *sb, struct dentry *root);
15
16#endif /* _HYPFS_DIAG_H_ */
diff --git a/arch/s390/hypfs/hypfs_vm.c b/arch/s390/hypfs/hypfs_vm.c
new file mode 100644
index 000000000000..d01fc8f799f0
--- /dev/null
+++ b/arch/s390/hypfs/hypfs_vm.c
@@ -0,0 +1,231 @@
1/*
2 * Hypervisor filesystem for Linux on s390. z/VM implementation.
3 *
4 * Copyright (C) IBM Corp. 2006
5 * Author(s): Michael Holzheu <holzheu@de.ibm.com>
6 */
7
8#include <linux/types.h>
9#include <linux/errno.h>
10#include <linux/string.h>
11#include <linux/vmalloc.h>
12#include <asm/ebcdic.h>
13#include "hypfs.h"
14
15#define NAME_LEN 8
16
17static char local_guest[] = " ";
18static char all_guests[] = "* ";
19static char *guest_query;
20
21struct diag2fc_data {
22 __u32 version;
23 __u32 flags;
24 __u64 used_cpu;
25 __u64 el_time;
26 __u64 mem_min_kb;
27 __u64 mem_max_kb;
28 __u64 mem_share_kb;
29 __u64 mem_used_kb;
30 __u32 pcpus;
31 __u32 lcpus;
32 __u32 vcpus;
33 __u32 cpu_min;
34 __u32 cpu_max;
35 __u32 cpu_shares;
36 __u32 cpu_use_samp;
37 __u32 cpu_delay_samp;
38 __u32 page_wait_samp;
39 __u32 idle_samp;
40 __u32 other_samp;
41 __u32 total_samp;
42 char guest_name[NAME_LEN];
43};
44
45struct diag2fc_parm_list {
46 char userid[NAME_LEN];
47 char aci_grp[NAME_LEN];
48 __u64 addr;
49 __u32 size;
50 __u32 fmt;
51};
52
53static int diag2fc(int size, char* query, void *addr)
54{
55 unsigned long residual_cnt;
56 unsigned long rc;
57 struct diag2fc_parm_list parm_list;
58
59 memcpy(parm_list.userid, query, NAME_LEN);
60 ASCEBC(parm_list.userid, NAME_LEN);
61 parm_list.addr = (unsigned long) addr ;
62 parm_list.size = size;
63 parm_list.fmt = 0x02;
64 memset(parm_list.aci_grp, 0x40, NAME_LEN);
65 rc = -1;
66
67 asm volatile(
68 " diag %0,%1,0x2fc\n"
69 "0:\n"
70 EX_TABLE(0b,0b)
71 : "=d" (residual_cnt), "+d" (rc) : "0" (&parm_list) : "memory");
72
73 if ((rc != 0 ) && (rc != -2))
74 return rc;
75 else
76 return -residual_cnt;
77}
78
79static struct diag2fc_data *diag2fc_store(char *query, int *count)
80{
81 int size;
82 struct diag2fc_data *data;
83
84 do {
85 size = diag2fc(0, query, NULL);
86 if (size < 0)
87 return ERR_PTR(-EACCES);
88 data = vmalloc(size);
89 if (!data)
90 return ERR_PTR(-ENOMEM);
91 if (diag2fc(size, query, data) == 0)
92 break;
93 vfree(data);
94 } while (1);
95 *count = (size / sizeof(*data));
96
97 return data;
98}
99
100static void diag2fc_free(void *data)
101{
102 vfree(data);
103}
104
105#define ATTRIBUTE(sb, dir, name, member) \
106do { \
107 void *rc; \
108 rc = hypfs_create_u64(sb, dir, name, member); \
109 if (IS_ERR(rc)) \
110 return PTR_ERR(rc); \
111} while(0)
112
113static int hpyfs_vm_create_guest(struct super_block *sb,
114 struct dentry *systems_dir,
115 struct diag2fc_data *data)
116{
117 char guest_name[NAME_LEN + 1] = {};
118 struct dentry *guest_dir, *cpus_dir, *samples_dir, *mem_dir;
119 int dedicated_flag, capped_value;
120
121 capped_value = (data->flags & 0x00000006) >> 1;
122 dedicated_flag = (data->flags & 0x00000008) >> 3;
123
124 /* guest dir */
125 memcpy(guest_name, data->guest_name, NAME_LEN);
126 EBCASC(guest_name, NAME_LEN);
127 strstrip(guest_name);
128 guest_dir = hypfs_mkdir(sb, systems_dir, guest_name);
129 if (IS_ERR(guest_dir))
130 return PTR_ERR(guest_dir);
131 ATTRIBUTE(sb, guest_dir, "onlinetime_us", data->el_time);
132
133 /* logical cpu information */
134 cpus_dir = hypfs_mkdir(sb, guest_dir, "cpus");
135 if (IS_ERR(cpus_dir))
136 return PTR_ERR(cpus_dir);
137 ATTRIBUTE(sb, cpus_dir, "cputime_us", data->used_cpu);
138 ATTRIBUTE(sb, cpus_dir, "capped", capped_value);
139 ATTRIBUTE(sb, cpus_dir, "dedicated", dedicated_flag);
140 ATTRIBUTE(sb, cpus_dir, "count", data->vcpus);
141 ATTRIBUTE(sb, cpus_dir, "weight_min", data->cpu_min);
142 ATTRIBUTE(sb, cpus_dir, "weight_max", data->cpu_max);
143 ATTRIBUTE(sb, cpus_dir, "weight_cur", data->cpu_shares);
144
145 /* memory information */
146 mem_dir = hypfs_mkdir(sb, guest_dir, "mem");
147 if (IS_ERR(mem_dir))
148 return PTR_ERR(mem_dir);
149 ATTRIBUTE(sb, mem_dir, "min_KiB", data->mem_min_kb);
150 ATTRIBUTE(sb, mem_dir, "max_KiB", data->mem_max_kb);
151 ATTRIBUTE(sb, mem_dir, "used_KiB", data->mem_used_kb);
152 ATTRIBUTE(sb, mem_dir, "share_KiB", data->mem_share_kb);
153
154 /* samples */
155 samples_dir = hypfs_mkdir(sb, guest_dir, "samples");
156 if (IS_ERR(samples_dir))
157 return PTR_ERR(samples_dir);
158 ATTRIBUTE(sb, samples_dir, "cpu_using", data->cpu_use_samp);
159 ATTRIBUTE(sb, samples_dir, "cpu_delay", data->cpu_delay_samp);
160 ATTRIBUTE(sb, samples_dir, "mem_delay", data->page_wait_samp);
161 ATTRIBUTE(sb, samples_dir, "idle", data->idle_samp);
162 ATTRIBUTE(sb, samples_dir, "other", data->other_samp);
163 ATTRIBUTE(sb, samples_dir, "total", data->total_samp);
164 return 0;
165}
166
167int hypfs_vm_create_files(struct super_block *sb, struct dentry *root)
168{
169 struct dentry *dir, *file;
170 struct diag2fc_data *data;
171 int rc, i, count = 0;
172
173 data = diag2fc_store(guest_query, &count);
174 if (IS_ERR(data))
175 return PTR_ERR(data);
176
177 /* Hpervisor Info */
178 dir = hypfs_mkdir(sb, root, "hyp");
179 if (IS_ERR(dir)) {
180 rc = PTR_ERR(dir);
181 goto failed;
182 }
183 file = hypfs_create_str(sb, dir, "type", "z/VM Hypervisor");
184 if (IS_ERR(file)) {
185 rc = PTR_ERR(file);
186 goto failed;
187 }
188
189 /* physical cpus */
190 dir = hypfs_mkdir(sb, root, "cpus");
191 if (IS_ERR(dir)) {
192 rc = PTR_ERR(dir);
193 goto failed;
194 }
195 file = hypfs_create_u64(sb, dir, "count", data->lcpus);
196 if (IS_ERR(file)) {
197 rc = PTR_ERR(file);
198 goto failed;
199 }
200
201 /* guests */
202 dir = hypfs_mkdir(sb, root, "systems");
203 if (IS_ERR(dir)) {
204 rc = PTR_ERR(dir);
205 goto failed;
206 }
207
208 for (i = 0; i < count; i++) {
209 rc = hpyfs_vm_create_guest(sb, dir, &(data[i]));
210 if (rc)
211 goto failed;
212 }
213 diag2fc_free(data);
214 return 0;
215
216failed:
217 diag2fc_free(data);
218 return rc;
219}
220
221int hypfs_vm_init(void)
222{
223 if (diag2fc(0, all_guests, NULL) > 0)
224 guest_query = all_guests;
225 else if (diag2fc(0, local_guest, NULL) > 0)
226 guest_query = local_guest;
227 else
228 return -EACCES;
229
230 return 0;
231}
diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
index b6716c4b9934..a4fda7b53640 100644
--- a/arch/s390/hypfs/inode.c
+++ b/arch/s390/hypfs/inode.c
@@ -19,7 +19,6 @@
19#include <linux/module.h> 19#include <linux/module.h>
20#include <asm/ebcdic.h> 20#include <asm/ebcdic.h>
21#include "hypfs.h" 21#include "hypfs.h"
22#include "hypfs_diag.h"
23 22
24#define HYPFS_MAGIC 0x687970 /* ASCII 'hyp' */ 23#define HYPFS_MAGIC 0x687970 /* ASCII 'hyp' */
25#define TMP_SIZE 64 /* size of temporary buffers */ 24#define TMP_SIZE 64 /* size of temporary buffers */
@@ -192,7 +191,10 @@ static ssize_t hypfs_aio_write(struct kiocb *iocb, const struct iovec *iov,
192 goto out; 191 goto out;
193 } 192 }
194 hypfs_delete_tree(sb->s_root); 193 hypfs_delete_tree(sb->s_root);
195 rc = hypfs_diag_create_files(sb, sb->s_root); 194 if (MACHINE_IS_VM)
195 rc = hypfs_vm_create_files(sb, sb->s_root);
196 else
197 rc = hypfs_diag_create_files(sb, sb->s_root);
196 if (rc) { 198 if (rc) {
197 printk(KERN_ERR "hypfs: Update failed\n"); 199 printk(KERN_ERR "hypfs: Update failed\n");
198 hypfs_delete_tree(sb->s_root); 200 hypfs_delete_tree(sb->s_root);
@@ -289,7 +291,10 @@ static int hypfs_fill_super(struct super_block *sb, void *data, int silent)
289 rc = -ENOMEM; 291 rc = -ENOMEM;
290 goto err_alloc; 292 goto err_alloc;
291 } 293 }
292 rc = hypfs_diag_create_files(sb, root_dentry); 294 if (MACHINE_IS_VM)
295 rc = hypfs_vm_create_files(sb, root_dentry);
296 else
297 rc = hypfs_diag_create_files(sb, root_dentry);
293 if (rc) 298 if (rc)
294 goto err_tree; 299 goto err_tree;
295 sbi->update_file = hypfs_create_update_file(sb, root_dentry); 300 sbi->update_file = hypfs_create_update_file(sb, root_dentry);
@@ -462,11 +467,15 @@ static int __init hypfs_init(void)
462{ 467{
463 int rc; 468 int rc;
464 469
465 if (MACHINE_IS_VM) 470 if (MACHINE_IS_VM) {
466 return -ENODATA; 471 if (hypfs_vm_init())
467 if (hypfs_diag_init()) { 472 /* no diag 2fc, just exit */
468 rc = -ENODATA; 473 return -ENODATA;
469 goto fail_diag; 474 } else {
475 if (hypfs_diag_init()) {
476 rc = -ENODATA;
477 goto fail_diag;
478 }
470 } 479 }
471 kset_set_kset_s(&s390_subsys, hypervisor_subsys); 480 kset_set_kset_s(&s390_subsys, hypervisor_subsys);
472 rc = subsystem_register(&s390_subsys); 481 rc = subsystem_register(&s390_subsys);
@@ -480,7 +489,8 @@ static int __init hypfs_init(void)
480fail_filesystem: 489fail_filesystem:
481 subsystem_unregister(&s390_subsys); 490 subsystem_unregister(&s390_subsys);
482fail_sysfs: 491fail_sysfs:
483 hypfs_diag_exit(); 492 if (!MACHINE_IS_VM)
493 hypfs_diag_exit();
484fail_diag: 494fail_diag:
485 printk(KERN_ERR "hypfs: Initialization failed with rc = %i.\n", rc); 495 printk(KERN_ERR "hypfs: Initialization failed with rc = %i.\n", rc);
486 return rc; 496 return rc;
@@ -488,7 +498,8 @@ fail_diag:
488 498
489static void __exit hypfs_exit(void) 499static void __exit hypfs_exit(void)
490{ 500{
491 hypfs_diag_exit(); 501 if (!MACHINE_IS_VM)
502 hypfs_diag_exit();
492 unregister_filesystem(&hypfs_type); 503 unregister_filesystem(&hypfs_type);
493 subsystem_unregister(&s390_subsys); 504 subsystem_unregister(&s390_subsys);
494} 505}
generated by cgit v1.2.2 (git 2.25.0) at 2026-04-28 08:04:48 -0400