drivers: Remove CONFIG_OPROFILE support

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.

Remove kernel's old oprofile support.

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: Paul E. McKenney <paulmck@kernel.org> #RCU
Acked-by: William Cohen <wcohen@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 0 insertions, 121 deletions

diff --git a/drivers/oprofile/cpu_buffer.h b/drivers/oprofile/cpu_buffer.h
deleted file mode 100644
index 31478c0cff87..000000000000
--- a/drivers/oprofile/cpu_buffer.h
+++ /dev/null
@@ -1,121 +0,0 @@
-/**
- * @file cpu_buffer.h
- *
- * @remark Copyright 2002-2009 OProfile authors
- * @remark Read the file COPYING
- *
- * @author John Levon <levon@movementarian.org>
- * @author Robert Richter <robert.richter@amd.com>
- */
-
-#ifndef OPROFILE_CPU_BUFFER_H
-#define OPROFILE_CPU_BUFFER_H
-
-#include <linux/types.h>
-#include <linux/spinlock.h>
-#include <linux/workqueue.h>
-#include <linux/cache.h>
-#include <linux/sched.h>
-#include <linux/ring_buffer.h>
-
-struct task_struct;
-
-int alloc_cpu_buffers(void);
-void free_cpu_buffers(void);
-
-void start_cpu_work(void);
-void end_cpu_work(void);
-void flush_cpu_work(void);
-
-/* CPU buffer is composed of such entries (which are
- * also used for context switch notes)
- */
-struct op_sample {
-	unsigned long eip;
-	unsigned long event;
-	unsigned long data[];
-};
-
-struct op_entry;
-
-struct oprofile_cpu_buffer {
-	unsigned long buffer_size;
-	struct task_struct *last_task;
-	int last_is_kernel;
-	int tracing;
-	unsigned long sample_received;
-	unsigned long sample_lost_overflow;
-	unsigned long backtrace_aborted;
-	unsigned long sample_invalid_eip;
-	int cpu;
-	struct delayed_work work;
-};
-
-DECLARE_PER_CPU(struct oprofile_cpu_buffer, op_cpu_buffer);
-
-/*
- * Resets the cpu buffer to a sane state.
- *
- * reset these to invalid values; the next sample collected will
- * populate the buffer with proper values to initialize the buffer
- */
-static inline void op_cpu_buffer_reset(int cpu)
-{
-	struct oprofile_cpu_buffer *cpu_buf = &per_cpu(op_cpu_buffer, cpu);
-
-	cpu_buf->last_is_kernel = -1;
-	cpu_buf->last_task = NULL;
-}
-
-/*
- * op_cpu_buffer_add_data() and op_cpu_buffer_write_commit() may be
- * called only if op_cpu_buffer_write_reserve() did not return NULL or
- * entry->event != NULL, otherwise entry->size or entry->event will be
- * used uninitialized.
- */
-
-struct op_sample
-*op_cpu_buffer_write_reserve(struct op_entry *entry, unsigned long size);
-int op_cpu_buffer_write_commit(struct op_entry *entry);
-struct op_sample *op_cpu_buffer_read_entry(struct op_entry *entry, int cpu);
-unsigned long op_cpu_buffer_entries(int cpu);
-
-/* returns the remaining free size of data in the entry */
-static inline
-int op_cpu_buffer_add_data(struct op_entry *entry, unsigned long val)
-{
-	if (!entry->size)
-		return 0;
-	*entry->data = val;
-	entry->size--;
-	entry->data++;
-	return entry->size;
-}
-
-/* returns the size of data in the entry */
-static inline
-int op_cpu_buffer_get_size(struct op_entry *entry)
-{
-	return entry->size;
-}
-
-/* returns 0 if empty or the size of data including the current value */
-static inline
-int op_cpu_buffer_get_data(struct op_entry *entry, unsigned long *val)
-{
-	int size = entry->size;
-	if (!size)
-		return 0;
-	*val = *entry->data;
-	entry->size--;
-	entry->data++;
-	return size;
-}
-
-/* extra data flags */
-#define KERNEL_CTX_SWITCH	(1UL << 0)
-#define IS_KERNEL		(1UL << 1)
-#define TRACE_BEGIN		(1UL << 2)
-#define USER_CTX_SWITCH		(1UL << 3)
-
-#endif /* OPROFILE_CPU_BUFFER_H */