linux-kernel - [PATCH 4/5] x86/xen: put setup.c, pmu.c and apic.c under CONFIG_XEN

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Date:   Fri, 24 Feb 2017 17:14:39 +0100
From:   Vitaly Kuznetsov <vkuznets@...hat.com>
To:     xen-devel@...ts.xenproject.org
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Juergen Gross <jgross@...e.com>,
        Andrew Jones <drjones@...hat.com>
Subject: [PATCH 4/5] x86/xen: put setup.c, pmu.c and apic.c under CONFIG_XEN_PV

xen_pmu_init/finish() functions are used in suspend.c and
enlighten.c, add stubs for now.

Signed-off-by: Vitaly Kuznetsov <vkuznets@...hat.com>
---
 arch/x86/xen/Kconfig  | 2 +-
 arch/x86/xen/Makefile | 5 +++--
 arch/x86/xen/pmu.h    | 5 +++++
 3 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig
index 9ebfd77..aa8256b 100644
--- a/arch/x86/xen/Kconfig
+++ b/arch/x86/xen/Kconfig
@@ -6,7 +6,6 @@ config XEN
 	bool "Xen guest support"
 	depends on PARAVIRT
 	select PARAVIRT_CLOCK
-	select XEN_HAVE_VPMU
 	depends on X86_64 || (X86_32 && X86_PAE)
 	depends on X86_LOCAL_APIC && X86_TSC
 	help
@@ -18,6 +17,7 @@ config XEN_PV
 	bool "Xen PV guest support"
 	default y
 	depends on XEN
+	select XEN_HAVE_VPMU
 	help
 	  Support running as a Xen PV guest.
 
diff --git a/arch/x86/xen/Makefile b/arch/x86/xen/Makefile
index 3bf840e..10264ed 100644
--- a/arch/x86/xen/Makefile
+++ b/arch/x86/xen/Makefile
@@ -13,9 +13,10 @@ CFLAGS_mmu_pv.o			:= $(nostackp)
 obj-y		:= enlighten.o multicalls.o \
 			irq.o time.o xen-asm.o xen-asm_$(BITS).o \
 			grant-table.o suspend.o platform-pci-unplug.o \
-			apic.o pmu.o mmu.o
+			mmu.o
 
-obj-$(CONFIG_XEN_PV)		+= enlighten_pv.o setup.o mmu_pv.o p2m.o
+obj-$(CONFIG_XEN_PV)		+= enlighten_pv.o setup.o mmu_pv.o p2m.o \
+					apic.o pmu.o
 obj-$(CONFIG_XEN_PVHVM)		+= enlighten_hvm.o mmu_hvm.o
 obj-$(CONFIG_XEN_PVH)		+= enlighten_pvh.o
 
diff --git a/arch/x86/xen/pmu.h b/arch/x86/xen/pmu.h
index af5f0ad..4be5355 100644
--- a/arch/x86/xen/pmu.h
+++ b/arch/x86/xen/pmu.h
@@ -4,8 +4,13 @@
 #include <xen/interface/xenpmu.h>
 
 irqreturn_t xen_pmu_irq_handler(int irq, void *dev_id);
+#ifdef CONFIG_XEN_HAVE_VPMU
 void xen_pmu_init(int cpu);
 void xen_pmu_finish(int cpu);
+#else
+static inline void xen_pmu_init(int cpu) {}
+static inline void xen_pmu_finish(int cpu) {}
+#endif
 bool is_xen_pmu(int cpu);
 bool pmu_msr_read(unsigned int msr, uint64_t *val, int *err);
 bool pmu_msr_write(unsigned int msr, uint32_t low, uint32_t high, int *err);
-- 
2.9.3