mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 04:34:11 +08:00
cb5ab74204
Change the boot tracer printing to make it parsable for the scripts/bootgraph.pl script. We have now to output two lines for each initcall, according to the printk in do_one_initcall() in init/main.c We need now the call's time and the return's time. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
234 lines
6.7 KiB
C
234 lines
6.7 KiB
C
#ifndef _LINUX_FTRACE_H
|
|
#define _LINUX_FTRACE_H
|
|
|
|
#ifdef CONFIG_FTRACE
|
|
|
|
#include <linux/linkage.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/init.h>
|
|
#include <linux/types.h>
|
|
|
|
extern int ftrace_enabled;
|
|
extern int
|
|
ftrace_enable_sysctl(struct ctl_table *table, int write,
|
|
struct file *filp, void __user *buffer, size_t *lenp,
|
|
loff_t *ppos);
|
|
|
|
typedef void (*ftrace_func_t)(unsigned long ip, unsigned long parent_ip);
|
|
|
|
struct ftrace_ops {
|
|
ftrace_func_t func;
|
|
struct ftrace_ops *next;
|
|
};
|
|
|
|
/*
|
|
* The ftrace_ops must be a static and should also
|
|
* be read_mostly. These functions do modify read_mostly variables
|
|
* so use them sparely. Never free an ftrace_op or modify the
|
|
* next pointer after it has been registered. Even after unregistering
|
|
* it, the next pointer may still be used internally.
|
|
*/
|
|
int register_ftrace_function(struct ftrace_ops *ops);
|
|
int unregister_ftrace_function(struct ftrace_ops *ops);
|
|
void clear_ftrace_function(void);
|
|
|
|
extern void ftrace_stub(unsigned long a0, unsigned long a1);
|
|
|
|
#else /* !CONFIG_FTRACE */
|
|
# define register_ftrace_function(ops) do { } while (0)
|
|
# define unregister_ftrace_function(ops) do { } while (0)
|
|
# define clear_ftrace_function(ops) do { } while (0)
|
|
static inline void ftrace_kill_atomic(void) { }
|
|
#endif /* CONFIG_FTRACE */
|
|
|
|
#ifdef CONFIG_DYNAMIC_FTRACE
|
|
# define FTRACE_HASHBITS 10
|
|
# define FTRACE_HASHSIZE (1<<FTRACE_HASHBITS)
|
|
|
|
enum {
|
|
FTRACE_FL_FREE = (1 << 0),
|
|
FTRACE_FL_FAILED = (1 << 1),
|
|
FTRACE_FL_FILTER = (1 << 2),
|
|
FTRACE_FL_ENABLED = (1 << 3),
|
|
FTRACE_FL_NOTRACE = (1 << 4),
|
|
FTRACE_FL_CONVERTED = (1 << 5),
|
|
FTRACE_FL_FROZEN = (1 << 6),
|
|
};
|
|
|
|
struct dyn_ftrace {
|
|
struct hlist_node node;
|
|
unsigned long ip; /* address of mcount call-site */
|
|
unsigned long flags;
|
|
};
|
|
|
|
int ftrace_force_update(void);
|
|
void ftrace_set_filter(unsigned char *buf, int len, int reset);
|
|
|
|
/* defined in arch */
|
|
extern int ftrace_ip_converted(unsigned long ip);
|
|
extern unsigned char *ftrace_nop_replace(void);
|
|
extern unsigned char *ftrace_call_replace(unsigned long ip, unsigned long addr);
|
|
extern int ftrace_dyn_arch_init(void *data);
|
|
extern int ftrace_mcount_set(unsigned long *data);
|
|
extern int ftrace_modify_code(unsigned long ip, unsigned char *old_code,
|
|
unsigned char *new_code);
|
|
extern int ftrace_update_ftrace_func(ftrace_func_t func);
|
|
extern void ftrace_caller(void);
|
|
extern void ftrace_call(void);
|
|
extern void mcount_call(void);
|
|
|
|
extern int skip_trace(unsigned long ip);
|
|
|
|
extern void ftrace_release(void *start, unsigned long size);
|
|
|
|
extern void ftrace_disable_daemon(void);
|
|
extern void ftrace_enable_daemon(void);
|
|
|
|
#else
|
|
# define skip_trace(ip) ({ 0; })
|
|
# define ftrace_force_update() ({ 0; })
|
|
# define ftrace_set_filter(buf, len, reset) do { } while (0)
|
|
# define ftrace_disable_daemon() do { } while (0)
|
|
# define ftrace_enable_daemon() do { } while (0)
|
|
static inline void ftrace_release(void *start, unsigned long size) { }
|
|
#endif /* CONFIG_DYNAMIC_FTRACE */
|
|
|
|
/* totally disable ftrace - can not re-enable after this */
|
|
void ftrace_kill(void);
|
|
void ftrace_kill_atomic(void);
|
|
|
|
static inline void tracer_disable(void)
|
|
{
|
|
#ifdef CONFIG_FTRACE
|
|
ftrace_enabled = 0;
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Ftrace disable/restore without lock. Some synchronization mechanism
|
|
* must be used to prevent ftrace_enabled to be changed between
|
|
* disable/restore.
|
|
*/
|
|
static inline int __ftrace_enabled_save(void)
|
|
{
|
|
#ifdef CONFIG_FTRACE
|
|
int saved_ftrace_enabled = ftrace_enabled;
|
|
ftrace_enabled = 0;
|
|
return saved_ftrace_enabled;
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
static inline void __ftrace_enabled_restore(int enabled)
|
|
{
|
|
#ifdef CONFIG_FTRACE
|
|
ftrace_enabled = enabled;
|
|
#endif
|
|
}
|
|
|
|
#ifdef CONFIG_FRAME_POINTER
|
|
/* TODO: need to fix this for ARM */
|
|
# define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0))
|
|
# define CALLER_ADDR1 ((unsigned long)__builtin_return_address(1))
|
|
# define CALLER_ADDR2 ((unsigned long)__builtin_return_address(2))
|
|
# define CALLER_ADDR3 ((unsigned long)__builtin_return_address(3))
|
|
# define CALLER_ADDR4 ((unsigned long)__builtin_return_address(4))
|
|
# define CALLER_ADDR5 ((unsigned long)__builtin_return_address(5))
|
|
# define CALLER_ADDR6 ((unsigned long)__builtin_return_address(6))
|
|
#else
|
|
# define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0))
|
|
# define CALLER_ADDR1 0UL
|
|
# define CALLER_ADDR2 0UL
|
|
# define CALLER_ADDR3 0UL
|
|
# define CALLER_ADDR4 0UL
|
|
# define CALLER_ADDR5 0UL
|
|
# define CALLER_ADDR6 0UL
|
|
#endif
|
|
|
|
#ifdef CONFIG_IRQSOFF_TRACER
|
|
extern void time_hardirqs_on(unsigned long a0, unsigned long a1);
|
|
extern void time_hardirqs_off(unsigned long a0, unsigned long a1);
|
|
#else
|
|
# define time_hardirqs_on(a0, a1) do { } while (0)
|
|
# define time_hardirqs_off(a0, a1) do { } while (0)
|
|
#endif
|
|
|
|
#ifdef CONFIG_PREEMPT_TRACER
|
|
extern void trace_preempt_on(unsigned long a0, unsigned long a1);
|
|
extern void trace_preempt_off(unsigned long a0, unsigned long a1);
|
|
#else
|
|
# define trace_preempt_on(a0, a1) do { } while (0)
|
|
# define trace_preempt_off(a0, a1) do { } while (0)
|
|
#endif
|
|
|
|
#ifdef CONFIG_TRACING
|
|
extern void
|
|
ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3);
|
|
|
|
/**
|
|
* ftrace_printk - printf formatting in the ftrace buffer
|
|
* @fmt: the printf format for printing
|
|
*
|
|
* Note: __ftrace_printk is an internal function for ftrace_printk and
|
|
* the @ip is passed in via the ftrace_printk macro.
|
|
*
|
|
* This function allows a kernel developer to debug fast path sections
|
|
* that printk is not appropriate for. By scattering in various
|
|
* printk like tracing in the code, a developer can quickly see
|
|
* where problems are occurring.
|
|
*
|
|
* This is intended as a debugging tool for the developer only.
|
|
* Please refrain from leaving ftrace_printks scattered around in
|
|
* your code.
|
|
*/
|
|
# define ftrace_printk(fmt...) __ftrace_printk(_THIS_IP_, fmt)
|
|
extern int
|
|
__ftrace_printk(unsigned long ip, const char *fmt, ...)
|
|
__attribute__ ((format (printf, 2, 3)));
|
|
extern void ftrace_dump(void);
|
|
#else
|
|
static inline void
|
|
ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3) { }
|
|
static inline int
|
|
ftrace_printk(const char *fmt, ...) __attribute__ ((format (printf, 1, 0)));
|
|
|
|
static inline int
|
|
ftrace_printk(const char *fmt, ...)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void ftrace_dump(void) { }
|
|
#endif
|
|
|
|
#ifdef CONFIG_FTRACE_MCOUNT_RECORD
|
|
extern void ftrace_init(void);
|
|
extern void ftrace_init_module(unsigned long *start, unsigned long *end);
|
|
#else
|
|
static inline void ftrace_init(void) { }
|
|
static inline void
|
|
ftrace_init_module(unsigned long *start, unsigned long *end) { }
|
|
#endif
|
|
|
|
|
|
struct boot_trace {
|
|
pid_t caller;
|
|
initcall_t func;
|
|
int result;
|
|
unsigned long long duration;
|
|
ktime_t calltime;
|
|
ktime_t rettime;
|
|
};
|
|
|
|
#ifdef CONFIG_BOOT_TRACER
|
|
extern void trace_boot(struct boot_trace *it);
|
|
extern void start_boot_trace(void);
|
|
#else
|
|
static inline void trace_boot(struct boot_trace *it) { }
|
|
static inline void start_boot_trace(void) { }
|
|
#endif
|
|
|
|
|
|
|
|
#endif /* _LINUX_FTRACE_H */
|