From 31cb4bd31a48f62105d037ad53192b94d4c08f53 Mon Sep 17 00:00:00 2001 From: Michael Holzheu Date: Mon, 5 Feb 2007 21:18:29 +0100 Subject: [S390] Hypervisor filesystem (s390_hypfs) for z/VM This is an extension of the already existing hypfs for LPAR (DIAG 204). Data returned by DIAG 2fc is exported using the s390_hypfs when Linux is running under z/VM. Information about cpus and memory is provided. Data is put into different virtual files which can be accessed from user space. All values are represented as ASCII strings Signed-off-by: Michael Holzheu Signed-off-by: Martin Schwidefsky --- arch/s390/hypfs/inode.c | 31 +++++++++++++++++++++---------- 1 file changed, 21 insertions(+), 10 deletions(-) (limited to 'arch/s390/hypfs/inode.c') 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 @@ #include #include #include "hypfs.h" -#include "hypfs_diag.h" #define HYPFS_MAGIC 0x687970 /* ASCII 'hyp' */ #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, goto out; } hypfs_delete_tree(sb->s_root); - rc = hypfs_diag_create_files(sb, sb->s_root); + if (MACHINE_IS_VM) + rc = hypfs_vm_create_files(sb, sb->s_root); + else + rc = hypfs_diag_create_files(sb, sb->s_root); if (rc) { printk(KERN_ERR "hypfs: Update failed\n"); hypfs_delete_tree(sb->s_root); @@ -289,7 +291,10 @@ static int hypfs_fill_super(struct super_block *sb, void *data, int silent) rc = -ENOMEM; goto err_alloc; } - rc = hypfs_diag_create_files(sb, root_dentry); + if (MACHINE_IS_VM) + rc = hypfs_vm_create_files(sb, root_dentry); + else + rc = hypfs_diag_create_files(sb, root_dentry); if (rc) goto err_tree; sbi->update_file = hypfs_create_update_file(sb, root_dentry); @@ -462,11 +467,15 @@ static int __init hypfs_init(void) { int rc; - if (MACHINE_IS_VM) - return -ENODATA; - if (hypfs_diag_init()) { - rc = -ENODATA; - goto fail_diag; + if (MACHINE_IS_VM) { + if (hypfs_vm_init()) + /* no diag 2fc, just exit */ + return -ENODATA; + } else { + if (hypfs_diag_init()) { + rc = -ENODATA; + goto fail_diag; + } } kset_set_kset_s(&s390_subsys, hypervisor_subsys); rc = subsystem_register(&s390_subsys); @@ -480,7 +489,8 @@ static int __init hypfs_init(void) fail_filesystem: subsystem_unregister(&s390_subsys); fail_sysfs: - hypfs_diag_exit(); + if (!MACHINE_IS_VM) + hypfs_diag_exit(); fail_diag: printk(KERN_ERR "hypfs: Initialization failed with rc = %i.\n", rc); return rc; @@ -488,7 +498,8 @@ fail_diag: static void __exit hypfs_exit(void) { - hypfs_diag_exit(); + if (!MACHINE_IS_VM) + hypfs_diag_exit(); unregister_filesystem(&hypfs_type); subsystem_unregister(&s390_subsys); } -- cgit v1.2.3-59-g8ed1b