#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/printk.h>
#include <linux/atomic.h>

Data Structures
struct	oprofile_operations

struct	op_entry

Macros
#define	ESCAPE_CODE ~0UL

#define	CTX_SWITCH_CODE 1

#define	CPU_SWITCH_CODE 2

#define	COOKIE_SWITCH_CODE 3

#define	KERNEL_ENTER_SWITCH_CODE 4

#define	KERNEL_EXIT_SWITCH_CODE 5

#define	MODULE_LOADED_CODE 6

#define	CTX_TGID_CODE 7

#define	TRACE_BEGIN_CODE 8

#define	TRACE_END_CODE 9

#define	XEN_ENTER_SWITCH_CODE 10

#define	SPU_PROFILING_CODE 11

#define	SPU_CTX_SWITCH_CODE 12

#define	IBS_FETCH_CODE 13

#define	IBS_OP_CODE 14

Functions
int	oprofile_arch_init (struct oprofile_operations *ops)

void	oprofile_arch_exit (void)

void	oprofile_add_sample (struct pt_regs *const regs, unsigned long event)

void	oprofile_add_ext_sample (unsigned long pc, struct pt_regs *const regs, unsigned long event, int is_kernel)

void	oprofile_add_ext_hw_sample (unsigned long pc, struct pt_regs const regs, unsigned long event, int is_kernel, struct task_struct task)

void	oprofile_add_pc (unsigned long pc, int is_kernel, unsigned long event)

void	oprofile_add_trace (unsigned long eip)

int	oprofilefs_create_file (struct super_block sb, struct dentry root, char const name, const struct file_operations fops)

int	oprofilefs_create_file_perm (struct super_block sb, struct dentry root, char const name, const struct file_operations fops, int perm)

int	oprofilefs_create_ulong (struct super_block sb, struct dentry root, char const name, ulong val)

int	oprofilefs_create_ro_ulong (struct super_block sb, struct dentry root, char const name, ulong val)

int	oprofilefs_create_ro_atomic (struct super_block sb, struct dentry root, char const name, atomic_t val)

struct dentry *	oprofilefs_mkdir (struct super_block sb, struct dentry root, char const *name)

ssize_t	oprofilefs_str_to_user (char const str, char __user buf, size_t count, loff_t *offset)

ssize_t	oprofilefs_ulong_to_user (unsigned long val, char __user buf, size_t count, loff_t offset)

int	oprofilefs_ulong_from_user (unsigned long val, char const __user buf, size_t count)

void	oprofile_put_buff (unsigned long *buf, unsigned int start, unsigned int stop, unsigned int max)

unsigned long	oprofile_get_cpu_buffer_size (void)

void	oprofile_cpu_buffer_inc_smpl_lost (void)

void	oprofile_write_reserve (struct op_entry entry, struct pt_regs const regs, unsigned long pc, int code, int size)

int	oprofile_add_data (struct op_entry *entry, unsigned long val)

int	oprofile_add_data64 (struct op_entry *entry, u64 val)

int	oprofile_write_commit (struct op_entry *entry)

Variables
raw_spinlock_t	oprofilefs_lock

Detailed Description

API for machine-specific interrupts to interface to oprofile.

Remarks: Copyright 2002 OProfile authors; Read the file COPYING

Author: John Levon levon.nosp@m.@mov.nosp@m.ement.nosp@m.aria.nosp@m.n.org

Definition in file oprofile.h.

Macro Definition Documentation

#define COOKIE_SWITCH_CODE 3

Definition at line 32 of file oprofile.h.

#define CPU_SWITCH_CODE 2

Definition at line 31 of file oprofile.h.

#define CTX_SWITCH_CODE 1

Definition at line 30 of file oprofile.h.

#define CTX_TGID_CODE 7

Definition at line 36 of file oprofile.h.

#define ESCAPE_CODE ~0UL

Definition at line 29 of file oprofile.h.

#define IBS_FETCH_CODE 13

Definition at line 42 of file oprofile.h.

#define IBS_OP_CODE 14

Definition at line 43 of file oprofile.h.

#define KERNEL_ENTER_SWITCH_CODE 4

Definition at line 33 of file oprofile.h.

#define KERNEL_EXIT_SWITCH_CODE 5

Definition at line 34 of file oprofile.h.

#define MODULE_LOADED_CODE 6

Definition at line 35 of file oprofile.h.

#define SPU_CTX_SWITCH_CODE 12

Definition at line 41 of file oprofile.h.

#define SPU_PROFILING_CODE 11

Definition at line 40 of file oprofile.h.

#define TRACE_BEGIN_CODE 8

Definition at line 37 of file oprofile.h.

#define TRACE_END_CODE 9

Definition at line 38 of file oprofile.h.

#define XEN_ENTER_SWITCH_CODE 10

Definition at line 39 of file oprofile.h.

Function Documentation

int oprofile_add_data	(	struct op_entry *	entry,
		unsigned long	val
	)

Definition at line 384 of file cpu_buffer.c.

int oprofile_add_data64	(	struct op_entry *	entry,
		u64	val
	)

Definition at line 391 of file cpu_buffer.c.

void oprofile_add_ext_hw_sample	(	unsigned long	pc,
		struct pt_regs *const	regs,
		unsigned long	event,
		int	is_kernel,
		struct task_struct *	task
	)

Add an hardware sample.

Definition at line 319 of file cpu_buffer.c.

void oprofile_add_ext_sample	(	unsigned long	pc,
		struct pt_regs *const	regs,
		unsigned long	event,
		int	is_kernel
	)

Add an extended sample. Use this when the PC is not from the regs, and we cannot determine if we're in kernel mode from the regs.

This function does perform a backtrace.

Definition at line 326 of file cpu_buffer.c.

void oprofile_add_pc	(	unsigned long	pc,
		int	is_kernel,
		unsigned long	event
	)

Definition at line 413 of file cpu_buffer.c.

void oprofile_add_sample	(	struct pt_regs *const	regs,
		unsigned long	event
	)

Add a sample. This may be called from any context.

Definition at line 332 of file cpu_buffer.c.

void oprofile_add_trace ( unsigned long eip )

Definition at line 419 of file cpu_buffer.c.

void oprofile_arch_exit ( void )

One-time exit/cleanup for the arch.

Definition at line 187 of file common.c.

int oprofile_arch_init ( struct oprofile_operations * ops )

One-time initialisation. *ops must be set to a filled-in operations structure. This is called even in timer interrupt mode so an arch can set a backtrace callback.

If an error occurs, the fields should be left untouched.

Definition at line 142 of file common.c.

void oprofile_cpu_buffer_inc_smpl_lost ( void )

Definition at line 46 of file cpu_buffer.c.

unsigned long oprofile_get_cpu_buffer_size ( void )

Definition at line 41 of file cpu_buffer.c.

void oprofile_put_buff	(	unsigned long *	buf,
		unsigned int	start,
		unsigned int	stop,
		unsigned int	max
	)

Add the contents of a circular buffer to the event buffer.

Definition at line 570 of file buffer_sync.c.

int oprofile_write_commit ( struct op_entry * entry )

Definition at line 406 of file cpu_buffer.c.

void oprofile_write_reserve	(	struct op_entry *	entry,
		struct pt_regs *const	regs,
		unsigned long	pc,
		int	code,
		int	size
	)

Definition at line 355 of file cpu_buffer.c.

int oprofilefs_create_file	(	struct super_block *	sb,
		struct dentry *	root,
		char const *	name,
		const struct file_operations *	fops
	)

Create a file of the given name as a child of the given root, with the specified file operations.

Definition at line 195 of file oprofilefs.c.

int oprofilefs_create_file_perm	(	struct super_block *	sb,
		struct dentry *	root,
		char const *	name,
		const struct file_operations *	fops,
		int	perm
	)

Definition at line 202 of file oprofilefs.c.

int oprofilefs_create_ro_atomic	(	struct super_block *	sb,
		struct dentry *	root,
		char const *	name,
		atomic_t *	val
	)

Create a file for read-only access to an atomic_t.

Definition at line 187 of file oprofilefs.c.

int oprofilefs_create_ro_ulong	(	struct super_block *	sb,
		struct dentry *	root,
		char const *	name,
		ulong *	val
	)

Create a file for read-only access to an unsigned long.

Definition at line 165 of file oprofilefs.c.

int oprofilefs_create_ulong	(	struct super_block *	sb,
		struct dentry *	root,
		char const *	name,
		ulong *	val
	)

Create a file for read/write access to an unsigned long.

Definition at line 157 of file oprofilefs.c.

struct dentry* oprofilefs_mkdir	(	struct super_block *	sb,
		struct dentry *	root,
		char const *	name
	)

read

create a directory

Definition at line 209 of file oprofilefs.c.

ssize_t oprofilefs_str_to_user	(	char const *	str,
		char __user *	buf,
		size_t	count,
		loff_t *	offset
	)

Write the given asciz string to the given user buffer , updating *offset appropriately. Returns bytes written or -EFAULT.

Definition at line 45 of file oprofilefs.c.

int oprofilefs_ulong_from_user	(	unsigned long *	val,
		char const __user *	buf,
		size_t	count
	)

Read an ASCII string for a number from a userspace buffer and fill *val on success. Returns 0 on success, < 0 on error.

Definition at line 70 of file oprofilefs.c.

ssize_t oprofilefs_ulong_to_user	(	unsigned long	val,
		char __user *	buf,
		size_t	count,
		loff_t *	offset
	)

Convert an unsigned long value into ASCII and copy it to the user buffer , updating *offset appropriately. Returns bytes written or -EFAULT.

Definition at line 53 of file oprofilefs.c.

Variable Documentation

raw_spinlock_t oprofilefs_lock

lock for read/write safety

Data Structures

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

Function Documentation

Variable Documentation