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Subject[PATCH 4/5] drivers/xen: make sys-hypervisor.c explicitly non-modular
Date
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".

Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: xen-devel@lists.xenproject.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
---
drivers/xen/sys-hypervisor.c | 31 ++++---------------------------
1 file changed, 4 insertions(+), 27 deletions(-)

diff --git a/drivers/xen/sys-hypervisor.c b/drivers/xen/sys-hypervisor.c
index b5a7342e0ba5..ea6e98d60af0 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>

@@ -366,11 +366,6 @@ 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 +479,6 @@ 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 +507,8 @@ 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;
}
}
@@ -535,21 +526,7 @@ version_out:
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,
--
2.6.1
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