[PATCH 12/73] powerpc: kvm e500/44x is not modular, so don't use module_init

Paul Gortmaker
2014-01-21T21:24:31Z

In powerpc, CONFIG_KVM is bool, and so are these three subarch
options, for the 44x and e500 variants. This means that any
module_exit() calls and functions used by them such as the
kvmppc_booke_exit() are dead code. Here we remove them.

In addition, rather than use module_init, which is just
__initcall for non-modules, we update those as well.

Note that direct use of __initcall is discouraged, vs. one
of the priority categorized subgroups. As __initcall gets
mapped onto device_initcall, our use of subsys_initcall (which
seems to make sense for netfilter code) will thus change this
registration from level 6-device to level 4-subsys (i.e. slightly
earlier).

However no impact of that small difference is expected,
since the arch independent kvm code doesn't trigger any init;
it is the arch initcalls here which actually call kvm_init.

Cc: Gleb Natapov <gleb@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Alexander Graf <agraf@suse.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: kvm@vger.kernel.org
Cc: kvm-ppc@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
---
arch/powerpc/include/asm/kvm_ppc.h | 1 -
arch/powerpc/kvm/44x.c | 10 +---------
arch/powerpc/kvm/booke.c | 6 ------
arch/powerpc/kvm/e500.c | 10 +---------
arch/powerpc/kvm/e500mc.c | 10 +---------
5 files changed, 3 insertions(+), 34 deletions(-)

diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h
index c8317fb..8466df5 100644
--- a/arch/powerpc/include/asm/kvm_ppc.h
+++ b/arch/powerpc/include/asm/kvm_ppc.h
@@ -109,7 +109,6 @@ extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu);
extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu);

extern int kvmppc_booke_init(void);
-extern void kvmppc_booke_exit(void);

extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
diff --git a/arch/powerpc/kvm/44x.c b/arch/powerpc/kvm/44x.c
index 93221e8..2129fc1 100644
--- a/arch/powerpc/kvm/44x.c
+++ b/arch/powerpc/kvm/44x.c
@@ -222,12 +222,4 @@ static int __init kvmppc_44x_init(void)
err_out:
return r;
}
-
-static void __exit kvmppc_44x_exit(void)
-{
- kvmppc_pr_ops = NULL;
- kvmppc_booke_exit();
-}
-
-module_init(kvmppc_44x_init);
-module_exit(kvmppc_44x_exit);
+subsys_initcall(kvmppc_44x_init);
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 0591e05..49dffa2 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -1995,9 +1995,3 @@ int __init kvmppc_booke_init(void)
#endif /* !BOOKE_HV */
return 0;
}
-
-void __exit kvmppc_booke_exit(void)
-{
- free_pages(kvmppc_booke_handlers, VCPU_SIZE_ORDER);
- kvm_exit();
-}
diff --git a/arch/powerpc/kvm/e500.c b/arch/powerpc/kvm/e500.c
index 497b142..115ef12 100644
--- a/arch/powerpc/kvm/e500.c
+++ b/arch/powerpc/kvm/e500.c
@@ -564,12 +564,4 @@ static int __init kvmppc_e500_init(void)
err_out:
return r;
}
-
-static void __exit kvmppc_e500_exit(void)
-{
- kvmppc_pr_ops = NULL;
- kvmppc_booke_exit();
-}
-
-module_init(kvmppc_e500_init);
-module_exit(kvmppc_e500_exit);
+subsys_initcall(kvmppc_e500_init);
diff --git a/arch/powerpc/kvm/e500mc.c b/arch/powerpc/kvm/e500mc.c
index 4132cd2..612c216 100644
--- a/arch/powerpc/kvm/e500mc.c
+++ b/arch/powerpc/kvm/e500mc.c
@@ -382,12 +382,4 @@ static int __init kvmppc_e500mc_init(void)
err_out:
return r;
}
-
-static void __exit kvmppc_e500mc_exit(void)
-{
- kvmppc_pr_ops = NULL;
- kvmppc_booke_exit();
-}
-
-module_init(kvmppc_e500mc_init);
-module_exit(kvmppc_e500mc_exit);
+subsys_initcall(kvmppc_e500mc_init);
--
1.8.4.1