linux-kernel - [PATCH v3 15/21] x86/xen: put setup.c, pmu.c and apic.c under CONFIG_XEN

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Date:   Tue, 14 Mar 2017 18:35:50 +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 v3 15/21] 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>
Reviewed-by: Juergen Gross <jgross@...e.com>
---
 arch/x86/xen/Kconfig  | 2 +-
 arch/x86/xen/Makefile | 6 +++---
 arch/x86/xen/pmu.h    | 5 +++++
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig
index 6d15c34..3bcb091 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
@@ -19,6 +18,7 @@ config XEN_PV
 	default y
 	depends on XEN
 	select XEN_HAVE_PVMMU
+	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 cf8d6c5..f610651 100644
--- a/arch/x86/xen/Makefile
+++ b/arch/x86/xen/Makefile
@@ -10,13 +10,13 @@ nostackp := $(call cc-option, -fno-stack-protector)
 CFLAGS_enlighten_pv.o		:= $(nostackp)
 CFLAGS_mmu_pv.o		:= $(nostackp)
 
-obj-y		:= enlighten.o setup.o multicalls.o mmu.o irq.o \
+obj-y		:= enlighten.o multicalls.o mmu.o irq.o \
 			time.o xen-asm.o xen-asm_$(BITS).o \
 			grant-table.o suspend.o platform-pci-unplug.o \
-			p2m.o apic.o pmu.o enlighten_pv.o mmu_pv.o
+			p2m.o enlighten_pv.o mmu_pv.o
 
 obj-$(CONFIG_XEN_PVHVM)		+= enlighten_hvm.o mmu_hvm.o suspend_hvm.o
-obj-$(CONFIG_XEN_PV)			+= suspend_pv.o
+obj-$(CONFIG_XEN_PV)			+= setup.o apic.o pmu.o suspend_pv.o
 obj-$(CONFIG_XEN_PVH)			+= enlighten_pvh.o
 
 obj-$(CONFIG_EVENT_TRACING) += trace.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