Creates /sys/hypervisor/xen and populates that dir with xen version, changeset, compilation, and capabilities info. Intended for the xen merge tree and later upstream.
# HG changeset patch
# User [email protected]
# Node ID 9a9f2a5f087c97186bd43561b90f30510413a3e2
# Parent 2e82fd7a69212955b75c6adaed4ae2a58ae45399
add /sys/hypervisor/xen to sysfs and populate with xen version attributes.
signed-off-by: Mike D. Day <[email protected]>
diff -r 2e82fd7a6921 -r 9a9f2a5f087c linux-2.6-xen-sparse/arch/xen/kernel/Makefile
--- a/linux-2.6-xen-sparse/arch/xen/kernel/Makefile Fri Jan 27 11:48:32 2006
+++ b/linux-2.6-xen-sparse/arch/xen/kernel/Makefile Fri Jan 27 14:28:42 2006
@@ -16,3 +16,4 @@
obj-$(CONFIG_PROC_FS) += xen_proc.o
obj-$(CONFIG_NET) += skbuff.o
obj-$(CONFIG_SMP) += smpboot.o
+obj-$(CONFIG_SYSFS) += xen_sysfs.o xen_sysfs_version.o
diff -r 2e82fd7a6921 -r 9a9f2a5f087c linux-2.6-xen-sparse/arch/xen/kernel/xen_sysfs.c
--- /dev/null Fri Jan 27 11:48:32 2006
+++ b/linux-2.6-xen-sparse/arch/xen/kernel/xen_sysfs.c Fri Jan 27 14:28:42 2006
@@ -0,0 +1,73 @@
+/*
+ copyright (c) 2006 IBM Corporation
+ Mike Day <[email protected]>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/kobject.h>
+#include <linux/sysfs.h>
+
+#include <asm-xen/xen_sysfs.h>
+
+
+static struct subsystem hypervisor_subsys = {
+ .kset = {
+ .kobj = {
+ .name = "hypervisor",
+ },
+ },
+};
+
+static struct kset xen_kset = {
+
+ .kobj = {
+ .name = "xen",
+ },
+};
+
+struct subsystem *
+get_hyper_subsys(void)
+{
+ return &hypervisor_subsys;
+}
+
+
+struct kset *
+get_xen_kset(void)
+{
+ return &xen_kset;
+}
+
+int __init
+hyper_sysfs_init(void)
+{
+ int err ;
+
+ if( 0 == (err = subsystem_register(&hypervisor_subsys)) ) {
+ xen_kset.subsys = &hypervisor_subsys;
+ err = kset_register(&xen_kset);
+ }
+ return err;
+}
+
+arch_initcall(hyper_sysfs_init);
+EXPORT_SYMBOL_GPL(get_hyper_subsys);
+EXPORT_SYMBOL_GPL(get_xen_kset);
diff -r 2e82fd7a6921 -r 9a9f2a5f087c linux-2.6-xen-sparse/arch/xen/kernel/xen_sysfs_version.c
--- /dev/null Fri Jan 27 11:48:32 2006
+++ b/linux-2.6-xen-sparse/arch/xen/kernel/xen_sysfs_version.c Fri Jan 27 14:28:42 2006
@@ -0,0 +1,194 @@
+/*
+ copyright (c) 2006 IBM Corporation
+ Mike Day <[email protected]>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <asm/page.h>
+
+#include <asm-xen/xen-public/dom0_ops.h>
+#include <asm-xen/xen-public/version.h>
+#include <asm-xen/asm/hypercall.h>
+#include <asm-xen/xen_sysfs.h>
+
+/* xen version info */
+static ssize_t xen_version_show(struct kobject * kobj,
+ struct attribute * attr,
+ char *page)
+{
+ long version;
+ long major, minor;
+ char extra_version[16];
+
+ if ( (version = HYPERVISOR_xen_version(XENVER_version, NULL)) ) {
+
+ major = version >> 16;
+ minor = version & 0xff;
+ if( ! HYPERVISOR_xen_version(XENVER_extraversion,
+ extra_version) ) {
+ page[PAGE_SIZE - 1] = 0x00;
+ return snprintf(page, PAGE_SIZE - 1,
+ "xen-%ld.%ld%s\n",
+ major, minor, extra_version);
+ }
+ }
+ return 0;
+}
+
+static struct xen_attr xen_ver_attr = {
+ .attr = {
+ .name = "version",
+ .mode = 0444,
+ .owner = THIS_MODULE,
+ },
+ .show = xen_version_show,
+};
+
+static struct kobject xen_ver_obj = {
+ .name = "version",
+};
+
+/* xen compile info */
+static ssize_t xen_compile_show(struct kobject * kobj,
+ struct attribute * attr,
+ char * page)
+{
+ struct xen_compile_info info;
+
+ if( 0 == HYPERVISOR_xen_version(XENVER_compile_info, &info) ) {
+ page[PAGE_SIZE - 1] = 0x00;
+ return snprintf(page, PAGE_SIZE - 1,
+ "compiled by %s, using %s, on %s\n",
+ info.compile_by,
+ info.compile_date,
+ info.compiler);
+ }
+ return 0;
+}
+
+static struct xen_attr xen_compile_attr = {
+ .attr = {
+ .name = "compilation",
+ .mode = 0444,
+ .owner = THIS_MODULE,
+ },
+ .show = xen_compile_show,
+};
+
+static struct kobject xen_compile_obj = {
+ .name = "compilation",
+};
+
+/* xen changeset info */
+static ssize_t xen_cset_show(struct kobject * kobj,
+ struct attribute * attr,
+ char * page)
+{
+ char info[64];
+
+ if( 0 == HYPERVISOR_xen_version(XENVER_changeset, &info) ) {
+ page[PAGE_SIZE - 1] = 0x00;
+ return snprintf(page, PAGE_SIZE - 1,
+ "%s\n", info);
+ }
+ return 0;
+}
+
+static struct xen_attr xen_cset_attr = {
+ .attr = {
+ .name = "changeset",
+ .mode = 0444,
+ .owner = THIS_MODULE,
+ },
+ .show = xen_cset_show,
+};
+
+static struct kobject xen_cset_obj = {
+ .name = "changeset",
+};
+
+
+/* xen capabilities info */
+static ssize_t xen_cap_show(struct kobject * kobj,
+ struct attribute * attr,
+ char * page)
+{
+ char info[1024];
+
+ if( 0 == HYPERVISOR_xen_version(XENVER_capabilities, &info) ) {
+ page[PAGE_SIZE - 1] = 0x00;
+ return snprintf(page, PAGE_SIZE - 1,
+ "%s\n", info);
+ }
+ return 0;
+}
+
+static struct xen_attr xen_cap_attr = {
+ .attr = {
+ .name = "capabilities",
+ .mode = 0444,
+ .owner = THIS_MODULE,
+ },
+ .show = xen_cap_show,
+};
+
+static struct kobject xen_cap_obj = {
+ .name = "capabilities",
+};
+
+int __init
+sysfs_xen_version_init(void)
+{
+ __label__ out;
+
+ struct kset * parent = get_xen_kset();
+ if ( parent != NULL ) {
+ kobject_init(&xen_ver_obj);
+ xen_ver_obj.parent = &parent->kobj;
+ xen_ver_obj.dentry = parent->kobj.dentry;
+ kobject_get(&parent->kobj);
+ if ( sysfs_create_file(&xen_ver_obj, &xen_ver_attr.attr) )
+ goto out;
+
+ kobject_init(&xen_compile_obj);
+ xen_compile_obj.parent = &parent->kobj;
+ xen_compile_obj.dentry = parent->kobj.dentry;
+ kobject_get(&parent->kobj);
+ if( sysfs_create_file(&xen_compile_obj, &xen_compile_attr.attr) )
+ goto out;
+
+ kobject_init(&xen_cset_obj);
+ xen_cset_obj.parent = &parent->kobj;
+ xen_cset_obj.dentry = parent->kobj.dentry;
+ kobject_get(&parent->kobj);
+ if( sysfs_create_file(&xen_cset_obj, &xen_cset_attr.attr) )
+ goto out;
+
+ kobject_init(&xen_cap_obj);
+ xen_cap_obj.parent = &parent->kobj;
+ xen_cap_obj.dentry = parent->kobj.dentry;
+ kobject_get(&parent->kobj);
+ return sysfs_create_file(&xen_cap_obj, &xen_cap_attr.attr);
+ }
+out:
+ return 1;
+}
+
+device_initcall(sysfs_xen_version_init);
diff -r 2e82fd7a6921 -r 9a9f2a5f087c linux-2.6-xen-sparse/include/asm-xen/xen_sysfs.h
--- /dev/null Fri Jan 27 11:48:32 2006
+++ b/linux-2.6-xen-sparse/include/asm-xen/xen_sysfs.h Fri Jan 27 14:28:42 2006
@@ -0,0 +1,45 @@
+/*
+ copyright (c) 2006 IBM Corporation
+ Mike Day <[email protected]>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+
+
+#ifndef _XEN_SYSFS_H_
+#define _XEN_SYSFS_H_
+
+#ifdef __KERNEL__
+
+#include <linux/kobject.h>
+#include <linux/sysfs.h>
+#include <linux/module.h>
+#include <asm-xen/asm/hypercall.h>
+#include <asm-xen/xen-public/version.h>
+
+
+struct xen_attr {
+ struct attribute attr;
+ ssize_t (*show)(struct kobject *, struct attribute *, char *);
+ ssize_t (*store)(struct kobject *, struct attribute *, char *);
+};
+
+extern int HYPERVISOR_xen_version(int, void*);
+extern struct subsystem * get_hyper_subsys(void);
+extern struct kset * get_xen_kset(void);
+
+#endif /* __KERNEL__ */
+#endif /* _XEN_SYSFS_H_ */
--
-
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