[patch 11/11] x86/perf/intel_uncore: Make it modular

[Thomas Gleixner]

Now that we have a proper cleanup all over the place, it's simple to make this
a modular driver.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
 arch/x86/Kconfig                              |   14 ++++++++++----
 arch/x86/kernel/cpu/Makefile                  |    3 ++-
 arch/x86/kernel/cpu/perf_event_intel_uncore.c |   24 ++++++++++++++++++------
 3 files changed, 30 insertions(+), 11 deletions(-)

--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -160,10 +160,6 @@ config INSTRUCTION_DECODER
 	def_bool y
 	depends on KPROBES || PERF_EVENTS || UPROBES
 
-config PERF_EVENTS_INTEL_UNCORE
-	def_bool y
-	depends on PERF_EVENTS && CPU_SUP_INTEL && PCI
-
 config OUTPUT_FORMAT
 	string
 	default "elf32-i386" if X86_32
@@ -1039,6 +1035,16 @@ config X86_THERMAL_VECTOR
 	def_bool y
 	depends on X86_MCE_INTEL
 
+config PERF_EVENTS_INTEL_UNCORE
+	tristate "Intel uncore performance events"
+	depends on PERF_EVENTS && CPU_SUP_INTEL && PCI
+	default y
+	---help---
+	  Include support for Intel uncore performance events. These are
+	  available on NehalemEX and more modern processors.
+
+	  If unsure say y.
+
 config X86_LEGACY_VM86
 	bool "Legacy VM86 support"
 	default n
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -43,7 +43,8 @@ obj-$(CONFIG_CPU_SUP_INTEL)		+= perf_eve
 obj-$(CONFIG_CPU_SUP_INTEL)		+= perf_event_intel_pt.o perf_event_intel_bts.o
 obj-$(CONFIG_CPU_SUP_INTEL)		+= perf_event_intel_cstate.o
 
-obj-$(CONFIG_PERF_EVENTS_INTEL_UNCORE)	+= perf_event_intel_uncore.o \
+obj-$(CONFIG_PERF_EVENTS_INTEL_UNCORE)	+= perf_event_intel_uncores.o
+perf_event_intel_uncores-objs		:= perf_event_intel_uncore.o \
 					   perf_event_intel_uncore_snb.o \
 					   perf_event_intel_uncore_snbep.o \
 					   perf_event_intel_uncore_nhmex.o
--- a/arch/x86/kernel/cpu/perf_event_intel_uncore.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
@@ -20,6 +20,8 @@ static struct event_constraint uncore_co
 struct event_constraint uncore_constraint_empty =
 	EVENT_CONSTRAINT(0, 0, 0);
 
+MODULE_LICENSE("GPL");
+
 int uncore_pcibus_to_physid(struct pci_bus *bus)
 {
 	struct pci2phy_map *map;
@@ -751,7 +753,7 @@ static void uncore_pmu_unregister(struct
 	pmu->registered = false;
 }
 
-static void __init __uncore_exit_boxes(struct intel_uncore_type *type, int cpu)
+static void __uncore_exit_boxes(struct intel_uncore_type *type, int cpu)
 {
 	struct intel_uncore_pmu *pmu = type->pmus;
 	struct intel_uncore_box *box;
@@ -767,7 +769,7 @@ static void __init __uncore_exit_boxes(s
 	}
 }
 
-static void __init uncore_exit_boxes(void *dummy)
+static void uncore_exit_boxes(void *dummy)
 {
 	struct intel_uncore_type **types = uncore_msr_uncores;
 
@@ -784,7 +786,7 @@ static void uncore_free_boxes(struct int
 	kfree(pmu->boxes);
 }
 
-static void __init uncore_type_exit(struct intel_uncore_type *type)
+static void uncore_type_exit(struct intel_uncore_type *type)
 {
 	struct intel_uncore_pmu *pmu = type->pmus;
 	int i;
@@ -801,7 +803,7 @@ static void __init uncore_type_exit(stru
 	type->events_group = NULL;
 }
 
-static void __init uncore_types_exit(struct intel_uncore_type **types)
+static void uncore_types_exit(struct intel_uncore_type **types)
 {
 	while (*types)
 		uncore_type_exit(*types++);
@@ -1040,7 +1042,7 @@ static int __init uncore_pci_init(void)
 	return ret;
 }
 
-static void __init uncore_pci_exit(void)
+static void uncore_pci_exit(void)
 {
 	if (pcidrv_registered) {
 		pcidrv_registered = false;
@@ -1385,4 +1387,14 @@ static int __init intel_uncore_init(void
 	cpu_notifier_register_done();
 	return ret;
 }
-device_initcall(intel_uncore_init);
+module_init(intel_uncore_init);
+
+static void __exit intel_uncore_exit(void)
+{
+	cpu_notifier_register_done();
+	__unregister_cpu_notifier(&uncore_cpu_nb);
+	uncore_types_exit(uncore_msr_uncores);
+	uncore_pci_exit();
+	cpu_notifier_register_done();
+}
+module_exit(intel_uncore_exit);