arch: powerpc: Stop building and using oprofile

The "oprofile" user-space tools don't use the kernel OPROFILE support
any more, and haven't in a long time. User-space has been converted to
the perf interfaces.

This commits stops building oprofile for powerpc and removes any
reference to it from directories in arch/powerpc/ apart from
arch/powerpc/oprofile, which will be removed in the next commit (this is
broken into two commits as the size of the commit became very big, ~5k
lines).

Note that the member "oprofile_cpu_type" in "struct cpu_spec" isn't
removed as it was also used by other parts of the code.

Suggested-by: Christoph Hellwig <hch@infradead.org>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Robert Richter <rric@kernel.org>
Acked-by: William Cohen <wcohen@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Thomas Gleixner <tglx@linutronix.de>

arch/powerpc/Kconfig

@@ -226,7 +226,6 @@ config PPC
 	select HAVE_MOD_ARCH_SPECIFIC
 	select HAVE_NMI				if PERF_EVENTS || (PPC64 && PPC_BOOK3S)
 	select HAVE_HARDLOCKUP_DETECTOR_ARCH	if (PPC64 && PPC_BOOK3S)
-	select HAVE_OPROFILE
 	select HAVE_OPTPROBES			if PPC64
 	select HAVE_PERF_EVENTS
 	select HAVE_PERF_EVENTS_NMI		if PPC64

arch/powerpc/Makefile

@@ -276,8 +276,6 @@ head-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE)  += arch/powerpc/kernel/prom_init.o
 # See arch/powerpc/Kbuild for content of core part of the kernel
 core-y += arch/powerpc/
 
-drivers-$(CONFIG_OPROFILE)	+= arch/powerpc/oprofile/
-
 # Default to zImage, override when needed
 all: zImage
 

arch/powerpc/configs/44x/akebono_defconfig

@@ -8,7 +8,6 @@ CONFIG_EXPERT=y
 CONFIG_KALLSYMS_ALL=y
 # CONFIG_SLUB_CPU_PARTIAL is not set
 CONFIG_PROFILING=y
-CONFIG_OPROFILE=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set

arch/powerpc/configs/44x/currituck_defconfig

@@ -6,7 +6,6 @@ CONFIG_LOG_BUF_SHIFT=14
 CONFIG_EXPERT=y
 CONFIG_KALLSYMS_ALL=y
 CONFIG_PROFILING=y
-CONFIG_OPROFILE=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set

arch/powerpc/configs/44x/fsp2_defconfig

@@ -17,7 +17,6 @@ CONFIG_KALLSYMS_ALL=y
 CONFIG_BPF_SYSCALL=y
 CONFIG_EMBEDDED=y
 CONFIG_PROFILING=y
-CONFIG_OPROFILE=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set

arch/powerpc/configs/44x/iss476-smp_defconfig

@@ -7,7 +7,6 @@ CONFIG_BLK_DEV_INITRD=y
 CONFIG_EXPERT=y
 CONFIG_KALLSYMS_ALL=y
 CONFIG_PROFILING=y
-CONFIG_OPROFILE=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set

arch/powerpc/configs/cell_defconfig

@@ -14,7 +14,6 @@ CONFIG_CPUSETS=y
 CONFIG_BLK_DEV_INITRD=y
 # CONFIG_COMPAT_BRK is not set
 CONFIG_PROFILING=y
-CONFIG_OPROFILE=m
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_PARTITION_ADVANCED=y

arch/powerpc/configs/g5_defconfig

@@ -12,7 +12,6 @@ CONFIG_CGROUPS=y
 CONFIG_BLK_DEV_INITRD=y
 # CONFIG_COMPAT_BRK is not set
 CONFIG_PROFILING=y
-CONFIG_OPROFILE=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_MODVERSIONS=y

arch/powerpc/configs/maple_defconfig

@@ -9,7 +9,6 @@ CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 # CONFIG_COMPAT_BRK is not set
 CONFIG_PROFILING=y
-CONFIG_OPROFILE=m
 CONFIG_KPROBES=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y

arch/powerpc/configs/pasemi_defconfig

@@ -7,7 +7,6 @@ CONFIG_NO_HZ=y
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_BLK_DEV_INITRD=y
 CONFIG_PROFILING=y
-CONFIG_OPROFILE=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set

arch/powerpc/configs/pmac32_defconfig

@@ -10,7 +10,6 @@ CONFIG_LOG_BUF_SHIFT=14
 CONFIG_BLK_DEV_INITRD=y
 # CONFIG_COMPAT_BRK is not set
 CONFIG_PROFILING=y
-CONFIG_OPROFILE=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_MODULE_FORCE_UNLOAD=y

arch/powerpc/configs/powernv_defconfig

@@ -30,7 +30,6 @@ CONFIG_BLK_DEV_INITRD=y
 CONFIG_BPF_SYSCALL=y
 # CONFIG_COMPAT_BRK is not set
 CONFIG_PROFILING=y
-CONFIG_OPROFILE=m
 CONFIG_KPROBES=y
 CONFIG_JUMP_LABEL=y
 CONFIG_MODULES=y

arch/powerpc/configs/ppc64_defconfig

@@ -62,7 +62,6 @@ CONFIG_VIRTUALIZATION=y
 CONFIG_KVM_BOOK3S_64=m
 CONFIG_KVM_BOOK3S_64_HV=m
 CONFIG_VHOST_NET=m
-CONFIG_OPROFILE=m
 CONFIG_KPROBES=y
 CONFIG_JUMP_LABEL=y
 CONFIG_MODULES=y

arch/powerpc/configs/ppc64e_defconfig

@@ -14,7 +14,6 @@ CONFIG_CPUSETS=y
 CONFIG_BLK_DEV_INITRD=y
 # CONFIG_COMPAT_BRK is not set
 CONFIG_PROFILING=y
-CONFIG_OPROFILE=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_MODVERSIONS=y

arch/powerpc/configs/ppc6xx_defconfig

@@ -19,7 +19,6 @@ CONFIG_USER_NS=y
 CONFIG_BLK_DEV_INITRD=y
 # CONFIG_COMPAT_BRK is not set
 CONFIG_PROFILING=y
-CONFIG_OPROFILE=m
 CONFIG_KPROBES=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y

arch/powerpc/configs/ps3_defconfig

@@ -13,7 +13,6 @@ CONFIG_EMBEDDED=y
 # CONFIG_COMPAT_BRK is not set
 CONFIG_SLAB=y
 CONFIG_PROFILING=y
-CONFIG_OPROFILE=m
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 # CONFIG_PPC_POWERNV is not set

arch/powerpc/configs/pseries_defconfig

@@ -29,7 +29,6 @@ CONFIG_BLK_DEV_INITRD=y
 CONFIG_BPF_SYSCALL=y
 # CONFIG_COMPAT_BRK is not set
 CONFIG_PROFILING=y
-CONFIG_OPROFILE=m
 CONFIG_KPROBES=y
 CONFIG_JUMP_LABEL=y
 CONFIG_MODULES=y

arch/powerpc/include/asm/cputable.h

@@ -17,16 +17,6 @@ struct cpu_spec;
 typedef	void (*cpu_setup_t)(unsigned long offset, struct cpu_spec* spec);
 typedef	void (*cpu_restore_t)(void);
 
-enum powerpc_oprofile_type {
-	PPC_OPROFILE_INVALID = 0,
-	PPC_OPROFILE_RS64 = 1,
-	PPC_OPROFILE_POWER4 = 2,
-	PPC_OPROFILE_G4 = 3,
-	PPC_OPROFILE_FSL_EMB = 4,
-	PPC_OPROFILE_CELL = 5,
-	PPC_OPROFILE_PA6T = 6,
-};
-
 enum powerpc_pmc_type {
 	PPC_PMC_DEFAULT = 0,
 	PPC_PMC_IBM = 1,
@@ -83,16 +73,6 @@ struct cpu_spec {
 	/* Used by oprofile userspace to select the right counters */
 	char		*oprofile_cpu_type;
 
-	/* Processor specific oprofile operations */
-	enum powerpc_oprofile_type oprofile_type;
-
-	/* Bit locations inside the mmcra change */
-	unsigned long	oprofile_mmcra_sihv;
-	unsigned long	oprofile_mmcra_sipr;
-
-	/* Bits to clear during an oprofile exception */
-	unsigned long	oprofile_mmcra_clear;
-
 	/* Name of processor class, for the ELF AT_PLATFORM entry */
 	char		*platform;
 

arch/powerpc/include/asm/spu.h

@@ -201,20 +201,6 @@ int spu_64k_pages_available(void);
 struct mm_struct;
 extern void spu_flush_all_slbs(struct mm_struct *mm);
 
-/* This interface allows a profiler (e.g., OProfile) to store a ref
- * to spu context information that it creates.	This caching technique
- * avoids the need to recreate this information after a save/restore operation.
- *
- * Assumes the caller has already incremented the ref count to
- * profile_info; then spu_context_destroy must call kref_put
- * on prof_info_kref.
- */
-void spu_set_profile_private_kref(struct spu_context *ctx,
-				  struct kref *prof_info_kref,
-				  void ( * prof_info_release) (struct kref *kref));
-
-void *spu_get_profile_private_kref(struct spu_context *ctx);
-
 /* system callbacks from the SPU */
 struct spu_syscall_block {
 	u64 nr_ret;
@@ -266,25 +252,6 @@ void spu_remove_dev_attr(struct device_attribute *attr);
 int spu_add_dev_attr_group(struct attribute_group *attrs);
 void spu_remove_dev_attr_group(struct attribute_group *attrs);
 
-/*
- * Notifier blocks:
- *
- * oprofile can get notified when a context switch is performed
- * on an spe. The notifer function that gets called is passed
- * a pointer to the SPU structure as well as the object-id that
- * identifies the binary running on that SPU now.
- *
- * For a context save, the object-id that is passed is zero,
- * identifying that the kernel will run from that moment on.
- *
- * For a context restore, the object-id is the value written
- * to object-id spufs file from user space and the notifer
- * function can assume that spu->ctx is valid.
- */
-struct notifier_block;
-int spu_switch_event_register(struct notifier_block * n);
-int spu_switch_event_unregister(struct notifier_block * n);
-
 extern void notify_spus_active(void);
 extern void do_notify_spus_active(void);