http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/linux/oprofile.h

/** * @file oprofile.h * * API for machine-specific interrupts to interface * to oprofile. * * @remark Copyright 2002 OProfile authors * @remark Read the file COPYING * * @author John Levon <levon@movementarian.org> */ #ifndef OPROFILE_H #define OPROFILE_H #include <linux/types.h> #include <linux/spinlock.h> #include <asm/atomic.h> struct super_block; struct dentry; struct file_operations; struct pt_regs; /* Operations structure to be filled in */ struct oprofile_operations { /* create any necessary configuration files in the oprofile fs. * Optional. */ int (*create_files)(struct super_block * sb, struct dentry * root); /* Do any necessary interrupt setup. Optional. */ int (*setup)(void); /* Do any necessary interrupt shutdown. Optional. */ void (*shutdown)(void); /* Start delivering interrupts. */ int (*start)(void); /* Stop delivering interrupts. */ void (*stop)(void); /* Initiate a stack backtrace. Optional. */ void (*backtrace)(struct pt_regs * const regs, unsigned int depth); /* CPU identification string. */ char * cpu_type; }; /** * 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. */ int oprofile_arch_init(struct oprofile_operations * ops); /** * One-time exit/cleanup for the arch. */ void oprofile_arch_exit(void); /** * Add a sample. This may be called from any context. Pass * smp_processor_id() as cpu. */ void oprofile_add_sample(struct pt_regs * const regs, unsigned long event); /* Use this instead when the PC value is not from the regs. Doesn't * backtrace. */ void oprofile_add_pc(unsigned long pc, int is_kernel, unsigned long event); /* add a backtrace entry, to be called from the ->backtrace callback */ void oprofile_add_trace(unsigned long eip); /** * Create a file of the given name as a child of the given root, with * the specified file operations. */ int oprofilefs_create_file(struct super_block * sb, struct dentry * root, char const * name, struct file_operations * fops); int oprofilefs_create_file_perm(struct super_block * sb, struct dentry * root, char const * name, struct file_operations * fops, int perm); /** Create a file for read/write access to an unsigned long. */ int oprofilefs_create_ulong(struct super_block * sb, struct dentry * root, char const * name, ulong * val); /** Create a file for read-only access to an unsigned long. */ 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 atomic_t. */ int oprofilefs_create_ro_atomic(struct super_block * sb, struct dentry * root, char const * name, atomic_t * val); /** create a directory */ struct dentry * oprofilefs_mkdir(struct super_block * sb, struct dentry * root, char const * name); /** * Write the given asciz string to the given user buffer @buf, updating *offset * appropriately. Returns bytes written or -EFAULT. */ ssize_t oprofilefs_str_to_user(char const * str, char __user * buf, size_t count, loff_t * offset); /** * Convert an unsigned long value into ASCII and copy it to the user buffer @buf, * updating *offset appropriately. Returns bytes written or -EFAULT. */ ssize_t oprofilefs_ulong_to_user(unsigned long val, char __user * buf, size_t count, loff_t * offset); /** * Read an ASCII string for a number from a userspace buffer and fill *val on success. * Returns 0 on success, < 0 on error. */ int oprofilefs_ulong_from_user(unsigned long * val, char const __user * buf, size_t count); /** lock for read/write safety */ extern spinlock_t oprofilefs_lock; #endif /* OPROFILE_H */