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#ifndef _LINUX_KERNPROF_H
#define _LINUX_KERNPROF_H
#include <linux/ioctl.h>
#define CG_MAX_ARCS (1 << (8 * sizeof(short)))
#define PROF_BACKTRACE_BUFSIZE 4096 /* must be a power of 2 */
#define PROF_BACKTRACE_MAX_LEN 24
typedef unsigned int PC_sample_count_t;
/* profiling ioctl requests */
#define PROF_START _IO(0xAF, 0)
#define PROF_STOP _IO(0xAF, 1)
#define PROF_RESET _IO(0xAF, 2)
#define PROF_SET_SAMPLE_FREQ _IOW(0xAF, 3, int)
#define PROF_GET_SAMPLE_FREQ _IOR(0xAF, 4, int)
#define PROF_GET_PC_RES _IOR(0xAF, 5, int)
#define PROF_GET_ON_OFF_STATE _IOR(0xAF, 6, int)
#define PROF_SET_DOMAIN _IOW(0xAF, 7, int)
#define PROF_GET_DOMAIN _IOR(0xAF, 8, int)
#define PROF_SET_MODE _IOW(0xAF, 9, int)
#define PROF_GET_MODE _IOR(0xAF, 10, int)
#define PROF_SET_PERFCTR_EVENT _IOW(0xAF, 11, int)
#define PROF_GET_PERFCTR_EVENT _IOR(0xAF, 12, int)
/* PROF_*_ENABLE_MAP and PROF_GET_MAPPING ioctl requests are defined below */
#define PROF_SET_PID _IOW(0xAF, 16, int)
#define PROF_GET_PID _IOR(0xAF, 17, int)
enum {
PROF_MODE_PC_SAMPLING = 1,
PROF_MODE_CALL_GRAPH = 2,
PROF_MODE_BACKTRACE = 4,
PROF_MODE_CALL_COUNT = 8,
PROF_MODE_SCHEDULER_CALL_GRAPH = 16
};
enum {
PROF_DOMAIN_TIME,
PROF_DOMAIN_PERFCTR
};
#if defined(CONFIG_KERNPROF) || defined(CONFIG_MCOUNT)
/*
* To allow for profiling of loaded modules, this structure
* describes the layout of the buckets used to collect samples.
*/
typedef struct prof_mem_map
{
unsigned long kernel_buckets; /* number of kernel buckets */
unsigned long module_buckets; /* number of module buckets */
unsigned long nr_cpus; /* number of processors whether profiled or not */
unsigned long cg_from_size; /* size of one cg_from array */
unsigned long cg_to_size; /* size of one cg_to array */
unsigned long cg_to_offset; /* offset of cg_to array */
unsigned long kernel_start; /* lowest text address in kernel */
unsigned long kernel_end; /* highest text address in kernel */
unsigned long module_start; /* lowest text address in all modules */
unsigned long module_end; /* highest text address in all modules */
} prof_mem_map_t;
#endif /* CONFIG_KERNPROF or CONFIG_MCOUNT */
#ifdef __KERNEL__
#include <asm/atomic.h>
#include <asm/ptrace.h>
/*
* We don't export this to user space because its pointers may be of different
* size. If user space needs this it should define its own version making sure
* that individual fields are of the same size as in the kernel definition.
*/
struct cg_arc_dest {
unsigned long address;
atomic_t count;
unsigned short link;
unsigned short pad;
};
/*
* We do not export these ioctl requests to user space because it may have
* longs of different size.
*/
#define PROF_SET_ENABLE_MAP _IOW(0xAF, 13, long)
#define PROF_GET_ENABLE_MAP _IOR(0xAF, 14, long)
#define PROF_GET_MAPPING _IOR(0xAF, 15, long)
typedef void (*prof_hook_p)(struct pt_regs *);
typedef void (*mcount_hook_p)(unsigned long, unsigned long);
typedef void (*wakeup_hook_p)(unsigned long, unsigned long, unsigned long);
extern char _stext, _etext;
extern prof_hook_p prof_timer_hook;
extern prof_hook_p prof_perfctr_hook;
extern mcount_hook_p prof_scheduler_hook;
extern wakeup_hook_p prof_wakeup_hook;
extern mcount_hook_p mcount_hook;
extern int prof_have_frameptr, prof_have_mcount;
extern void USER(void); /* these can not be in a module */
extern void UNKNOWN_KERNEL(void);
extern void FIRMWARE(void);
extern void STALLED(void);
extern void SLEEPING(void);
extern void MODULE(void);
#define pc_out_of_range(pc) \
((pc) < (unsigned long) &_stext || (pc) >= (unsigned long) &_etext)
/* might be overridden by arch-specific redefinition */
#define FUNCTIONPC(func) (unsigned long) &(func)
#endif /* __KERNEL__ */
#endif /* !_LINUX_KERNPROF_H */
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