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authorPaul Gortmaker <paul.gortmaker@windriver.com>2016-02-21 19:06:07 -0500
committerDavid Vrabel <david.vrabel@citrix.com>2016-03-21 15:14:03 +0000
commit46894f17af151f9f2050821aaa889a32c7cbd16f (patch)
tree1558d924120992cae8162974b2fc966481e1a5d7 /drivers/xen
parentab1241a1fc4351be16a5fd5c34001de08c696169 (diff)
downloadop-kernel-dev-46894f17af151f9f2050821aaa889a32c7cbd16f.zip
op-kernel-dev-46894f17af151f9f2050821aaa889a32c7cbd16f.tar.gz
drivers/xen: make sys-hypervisor.c explicitly non-modular
The Kconfig currently controlling compilation of this code is: config XEN_SYS_HYPERVISOR bool "Create xen entries under /sys/hypervisor" ...meaning that it currently is not being built as a module by anyone. Lets remove the modular code that is essentially orphaned, so that when reading the driver there is no doubt it is builtin-only. Since module_init translates to device_initcall in the non-modular case, the init ordering remains unchanged with this commit. However one could argue that fs_initcall() might make more sense here. This change means that the one line function xen_properties_destroy() has only one user left, and since that is inside an #ifdef, we just manually inline it there vs. adding more ifdeffery around the function to avoid compile warnings about "defined but not used". In order to be consistent we also manually inline the other _destroy functions that are also just one line sysfs functions calls with only one call site remaing, even though they wouldn't need #ifdeffery. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Diffstat (limited to 'drivers/xen')
-rw-r--r--drivers/xen/sys-hypervisor.c59
1 files changed, 8 insertions, 51 deletions
diff --git a/drivers/xen/sys-hypervisor.c b/drivers/xen/sys-hypervisor.c
index b5a7342..6881b3c 100644
--- a/drivers/xen/sys-hypervisor.c
+++ b/drivers/xen/sys-hypervisor.c
@@ -9,7 +9,7 @@
#include <linux/slab.h>
#include <linux/kernel.h>
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/kobject.h>
#include <linux/err.h>
@@ -50,11 +50,6 @@ static int __init xen_sysfs_type_init(void)
return sysfs_create_file(hypervisor_kobj, &type_attr.attr);
}
-static void xen_sysfs_type_destroy(void)
-{
- sysfs_remove_file(hypervisor_kobj, &type_attr.attr);
-}
-
/* xen version attributes */
static ssize_t major_show(struct hyp_sysfs_attr *attr, char *buffer)
{
@@ -111,11 +106,6 @@ static int __init xen_sysfs_version_init(void)
return sysfs_create_group(hypervisor_kobj, &version_group);
}
-static void xen_sysfs_version_destroy(void)
-{
- sysfs_remove_group(hypervisor_kobj, &version_group);
-}
-
/* UUID */
static ssize_t uuid_show_fallback(struct hyp_sysfs_attr *attr, char *buffer)
@@ -157,11 +147,6 @@ static int __init xen_sysfs_uuid_init(void)
return sysfs_create_file(hypervisor_kobj, &uuid_attr.attr);
}
-static void xen_sysfs_uuid_destroy(void)
-{
- sysfs_remove_file(hypervisor_kobj, &uuid_attr.attr);
-}
-
/* xen compilation attributes */
static ssize_t compiler_show(struct hyp_sysfs_attr *attr, char *buffer)
@@ -235,11 +220,6 @@ static int __init xen_compilation_init(void)
return sysfs_create_group(hypervisor_kobj, &xen_compilation_group);
}
-static void xen_compilation_destroy(void)
-{
- sysfs_remove_group(hypervisor_kobj, &xen_compilation_group);
-}
-
/* xen properties info */
static ssize_t capabilities_show(struct hyp_sysfs_attr *attr, char *buffer)
@@ -366,11 +346,6 @@ static int __init xen_properties_init(void)
return sysfs_create_group(hypervisor_kobj, &xen_properties_group);
}
-static void xen_properties_destroy(void)
-{
- sysfs_remove_group(hypervisor_kobj, &xen_properties_group);
-}
-
#ifdef CONFIG_XEN_HAVE_VPMU
struct pmu_mode {
const char *name;
@@ -484,11 +459,6 @@ static int __init xen_pmu_init(void)
{
return sysfs_create_group(hypervisor_kobj, &xen_pmu_group);
}
-
-static void xen_pmu_destroy(void)
-{
- sysfs_remove_group(hypervisor_kobj, &xen_pmu_group);
-}
#endif
static int __init hyper_sysfs_init(void)
@@ -517,7 +487,8 @@ static int __init hyper_sysfs_init(void)
if (xen_initial_domain()) {
ret = xen_pmu_init();
if (ret) {
- xen_properties_destroy();
+ sysfs_remove_group(hypervisor_kobj,
+ &xen_properties_group);
goto prop_out;
}
}
@@ -525,31 +496,17 @@ static int __init hyper_sysfs_init(void)
goto out;
prop_out:
- xen_sysfs_uuid_destroy();
+ sysfs_remove_file(hypervisor_kobj, &uuid_attr.attr);
uuid_out:
- xen_compilation_destroy();
+ sysfs_remove_group(hypervisor_kobj, &xen_compilation_group);
comp_out:
- xen_sysfs_version_destroy();
+ sysfs_remove_group(hypervisor_kobj, &version_group);
version_out:
- xen_sysfs_type_destroy();
+ sysfs_remove_file(hypervisor_kobj, &type_attr.attr);
out:
return ret;
}
-
-static void __exit hyper_sysfs_exit(void)
-{
-#ifdef CONFIG_XEN_HAVE_VPMU
- xen_pmu_destroy();
-#endif
- 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);
+device_initcall(hyper_sysfs_init);
static ssize_t hyp_sysfs_show(struct kobject *kobj,
struct attribute *attr,
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