[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v2 10/11] drivers/xen: Export vmcoreinfo through sysfs
Export vmcoreinfo through sysfs. Signed-off-by: Daniel Kiper <daniel.kiper@xxxxxxxxxx> --- drivers/xen/sys-hypervisor.c | 42 +++++++++++++++++++++++++++++++++++++++++- 1 files changed, 41 insertions(+), 1 deletions(-) diff --git a/drivers/xen/sys-hypervisor.c b/drivers/xen/sys-hypervisor.c index 96453f8..6edc289 100644 --- a/drivers/xen/sys-hypervisor.c +++ b/drivers/xen/sys-hypervisor.c @@ -368,6 +368,41 @@ static void xen_properties_destroy(void) sysfs_remove_group(hypervisor_kobj, &xen_properties_group); } +#ifdef CONFIG_KEXEC +static ssize_t vmcoreinfo_show(struct hyp_sysfs_attr *attr, char *buffer) +{ + return sprintf(buffer, "%lx %lx\n", xen_vmcoreinfo_maddr, + xen_vmcoreinfo_max_size); +} + +HYPERVISOR_ATTR_RO(vmcoreinfo); + +static int __init xen_vmcoreinfo_init(void) +{ + if (!xen_vmcoreinfo_max_size) + return 0; + + return sysfs_create_file(hypervisor_kobj, &vmcoreinfo_attr.attr); +} + +static void xen_vmcoreinfo_destroy(void) +{ + if (!xen_vmcoreinfo_max_size) + return; + + sysfs_remove_file(hypervisor_kobj, &vmcoreinfo_attr.attr); +} +#else +static int __init xen_vmcoreinfo_init(void) +{ + return 0; +} + +static void xen_vmcoreinfo_destroy(void) +{ +} +#endif + static int __init hyper_sysfs_init(void) { int ret; @@ -390,9 +425,14 @@ static int __init hyper_sysfs_init(void) ret = xen_properties_init(); if (ret) goto prop_out; + ret = xen_vmcoreinfo_init(); + if (ret) + goto vmcoreinfo_out; goto out; +vmcoreinfo_out: + xen_properties_destroy(); prop_out: xen_sysfs_uuid_destroy(); uuid_out: @@ -407,12 +447,12 @@ out: static void __exit hyper_sysfs_exit(void) { + xen_vmcoreinfo_destroy(); xen_properties_destroy(); xen_compilation_destroy(); xen_sysfs_uuid_destroy(); xen_sysfs_version_destroy(); xen_sysfs_type_destroy(); - } module_init(hyper_sysfs_init); module_exit(hyper_sysfs_exit); -- 1.5.6.5 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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