#ifndef _LINUX_FTRACE_H
#define _LINUX_FTRACE_H
-#include <linux/linkage.h>
-#include <linux/fs.h>
-#include <linux/ktime.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/module.h>
+#include <linux/trace_clock.h>
#include <linux/kallsyms.h>
+#include <linux/linkage.h>
#include <linux/bitops.h>
+#include <linux/module.h>
+#include <linux/ktime.h>
#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/fs.h>
+
+#include <asm/ftrace.h>
#ifdef CONFIG_FUNCTION_TRACER
loff_t *ppos);
#endif
+struct ftrace_func_command {
+ struct list_head list;
+ char *name;
+ int (*func)(char *func, char *cmd,
+ char *params, int enable);
+};
+
#ifdef CONFIG_DYNAMIC_FTRACE
-/* asm/ftrace.h must be defined for archs supporting dynamic ftrace */
-#include <asm/ftrace.h>
+
+int ftrace_arch_code_modify_prepare(void);
+int ftrace_arch_code_modify_post_process(void);
+
+struct seq_file;
+
+struct ftrace_probe_ops {
+ void (*func)(unsigned long ip,
+ unsigned long parent_ip,
+ void **data);
+ int (*callback)(unsigned long ip, void **data);
+ void (*free)(void **data);
+ int (*print)(struct seq_file *m,
+ unsigned long ip,
+ struct ftrace_probe_ops *ops,
+ void *data);
+};
+
+extern int
+register_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops,
+ void *data);
+extern void
+unregister_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops,
+ void *data);
+extern void
+unregister_ftrace_function_probe_func(char *glob, struct ftrace_probe_ops *ops);
+extern void unregister_ftrace_function_probe_all(char *glob);
enum {
FTRACE_FL_FREE = (1 << 0),
};
struct dyn_ftrace {
-- struct list_head list;
unsigned long ip; /* address of mcount call-site */
unsigned long flags;
struct dyn_arch_ftrace arch;
int ftrace_force_update(void);
void ftrace_set_filter(unsigned char *buf, int len, int reset);
+int register_ftrace_command(struct ftrace_func_command *cmd);
+int unregister_ftrace_command(struct ftrace_func_command *cmd);
+
/* defined in arch */
extern int ftrace_ip_converted(unsigned long ip);
extern int ftrace_dyn_arch_init(void *data);
extern void ftrace_caller(void);
extern void ftrace_call(void);
extern void mcount_call(void);
+
+#ifndef FTRACE_ADDR
+#define FTRACE_ADDR ((unsigned long)ftrace_caller)
+#endif
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
extern void ftrace_graph_caller(void);
extern int ftrace_enable_ftrace_graph_caller(void);
#endif
/**
- * ftrace_make_nop - convert code into top
+ * ftrace_make_nop - convert code into nop
* @mod: module structure if called by module load initialization
* @rec: the mcount call site record
* @addr: the address that the call site should be calling
*/
extern int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr);
-
/* May be defined in arch */
extern int ftrace_arch_read_dyn_info(char *buf, int size);
# define ftrace_disable_daemon() do { } while (0)
# define ftrace_enable_daemon() do { } while (0)
static inline void ftrace_release(void *start, unsigned long size) { }
+static inline int register_ftrace_command(struct ftrace_func_command *cmd)
+{
+ return -EINVAL;
+}
+static inline int unregister_ftrace_command(char *cmd_name)
+{
+ return -EINVAL;
+}
#endif /* CONFIG_DYNAMIC_FTRACE */
/* totally disable ftrace - can not re-enable after this */
#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
+#ifndef HAVE_ARCH_CALLER_ADDR
+# ifdef CONFIG_FRAME_POINTER
+# 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
+#endif /* ifndef HAVE_ARCH_CALLER_ADDR */
#ifdef CONFIG_IRQSOFF_TRACER
extern void time_hardirqs_on(unsigned long a0, unsigned long a1);
# define trace_preempt_off(a0, a1) do { } while (0)
#endif
-#ifdef CONFIG_TRACING
-extern int ftrace_dump_on_oops;
-
-extern void tracing_start(void);
-extern void tracing_stop(void);
-extern void ftrace_off_permanent(void);
-
-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, 2)));
-
-static inline void tracing_start(void) { }
-static inline void tracing_stop(void) { }
-static inline void ftrace_off_permanent(void) { }
-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(struct module *mod,
unsigned long *start, unsigned long *end) { }
#endif
-enum {
- POWER_NONE = 0,
- POWER_CSTATE = 1,
- POWER_PSTATE = 2,
-};
-
-struct power_trace {
-#ifdef CONFIG_POWER_TRACER
- ktime_t stamp;
- ktime_t end;
- int type;
- int state;
-#endif
-};
-
-#ifdef CONFIG_POWER_TRACER
-extern void trace_power_start(struct power_trace *it, unsigned int type,
- unsigned int state);
-extern void trace_power_mark(struct power_trace *it, unsigned int type,
- unsigned int state);
-extern void trace_power_end(struct power_trace *it);
-#else
-static inline void trace_power_start(struct power_trace *it, unsigned int type,
- unsigned int state) { }
-static inline void trace_power_mark(struct power_trace *it, unsigned int type,
- unsigned int state) { }
-static inline void trace_power_end(struct power_trace *it) { }
-#endif
-
-
/*
* Structure that defines an entry function trace.
*/
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
/*
+ * Stack of return addresses for functions
+ * of a thread.
+ * Used in struct thread_info
+ */
+struct ftrace_ret_stack {
+ unsigned long ret;
+ unsigned long func;
+ unsigned long long calltime;
+};
+
+/*
+ * Primary handler of a function return.
+ * It relays on ftrace_return_to_handler.
+ * Defined in entry_32/64.S
+ */
+extern void return_to_handler(void);
+
+extern int
+ftrace_push_return_trace(unsigned long ret, unsigned long long time,
+ unsigned long func, int *depth);
+extern void
+ftrace_pop_return_trace(struct ftrace_graph_ret *trace, unsigned long *ret);
+
+/*
* Sometimes we don't want to trace a function with the function
* graph tracer but we want them to keep traced by the usual function
* tracer if the function graph tracer is not configured.
return tsk->trace & TSK_TRACE_FL_GRAPH;
}
+extern int ftrace_dump_on_oops;
+
#endif /* CONFIG_TRACING */
- * @syscall_nr: syscall number
+
+#ifdef CONFIG_HW_BRANCH_TRACER
+
+void trace_hw_branch(u64 from, u64 to);
+void trace_hw_branch_oops(void);
+
+#else /* CONFIG_HW_BRANCH_TRACER */
+
+static inline void trace_hw_branch(u64 from, u64 to) {}
+static inline void trace_hw_branch_oops(void) {}
+
+#endif /* CONFIG_HW_BRANCH_TRACER */
+
+/*
+ * A syscall entry in the ftrace syscalls array.
+ *
- struct syscall_trace_entry {
- int syscall_nr;
+ + * @name: name of the syscall
+ + * @nb_args: number of parameters it takes
+ + * @types: list of types as strings
+ + * @args: list of args as strings (args[i] matches types[i])
+ */
+ +struct syscall_metadata {
+ + const char *name;
+ + int nb_args;
+ + const char **types;
+ + const char **args;
+};
+
+#ifdef CONFIG_FTRACE_SYSCALLS
+ +extern void arch_init_ftrace_syscalls(void);
+ +extern struct syscall_metadata *syscall_nr_to_meta(int nr);
+extern void start_ftrace_syscalls(void);
+extern void stop_ftrace_syscalls(void);
+extern void ftrace_syscall_enter(struct pt_regs *regs);
+extern void ftrace_syscall_exit(struct pt_regs *regs);
+#else
+static inline void start_ftrace_syscalls(void) { }
+static inline void stop_ftrace_syscalls(void) { }
+static inline void ftrace_syscall_enter(struct pt_regs *regs) { }
+static inline void ftrace_syscall_exit(struct pt_regs *regs) { }
+#endif
+
#endif /* _LINUX_FTRACE_H */
#include <linux/mmiotrace.h>
#include <linux/ftrace.h>
#include <trace/boot.h>
+#include <trace/kmemtrace.h>
+#include <trace/power.h>
enum trace_type {
__TRACE_FIRST_TYPE = 0,
TRACE_FN,
TRACE_CTX,
TRACE_WAKE,
- TRACE_CONT,
TRACE_STACK,
TRACE_PRINT,
++ TRACE_BPRINT,
TRACE_SPECIAL,
TRACE_MMIO_RW,
TRACE_MMIO_MAP,
TRACE_GRAPH_ENT,
TRACE_USER_STACK,
TRACE_HW_BRANCHES,
+ TRACE_SYSCALL_ENTER,
+ TRACE_SYSCALL_EXIT,
+ TRACE_KMEM_ALLOC,
+ TRACE_KMEM_FREE,
TRACE_POWER,
+ TRACE_BLK,
- __TRACE_LAST_TYPE
+ __TRACE_LAST_TYPE,
};
/*
*/
struct trace_entry {
unsigned char type;
- unsigned char cpu;
unsigned char flags;
unsigned char preempt_count;
int pid;
/* Function call entry */
struct ftrace_graph_ent_entry {
- struct trace_entry ent;
+ struct trace_entry ent;
struct ftrace_graph_ent graph_ent;
};
/* Function return entry */
struct ftrace_graph_ret_entry {
- struct trace_entry ent;
+ struct trace_entry ent;
struct ftrace_graph_ret ret;
};
extern struct tracer boot_tracer;
};
/*
- * ftrace_printk entry:
+ * trace_printk entry:
*/
- struct print_entry {
++struct bprint_entry {
+ struct trace_entry ent;
+ unsigned long ip;
+ int depth;
+ const char *fmt;
+ u32 buf[];
+};
+
+ struct print_entry {
+ struct trace_entry ent;
+ unsigned long ip;
+ int depth;
+ char buf[];
+ };
+
#define TRACE_OLD_SIZE 88
struct trace_field_cont {
struct power_trace state_data;
};
+struct kmemtrace_alloc_entry {
+ struct trace_entry ent;
+ enum kmemtrace_type_id type_id;
+ unsigned long call_site;
+ const void *ptr;
+ size_t bytes_req;
+ size_t bytes_alloc;
+ gfp_t gfp_flags;
+ int node;
+};
+
+struct kmemtrace_free_entry {
+ struct trace_entry ent;
+ enum kmemtrace_type_id type_id;
+ unsigned long call_site;
+ const void *ptr;
+};
+
+ +struct syscall_trace_enter {
+ + struct trace_entry ent;
+ + int nr;
+ + unsigned long args[];
+ +};
+ +
+ +struct syscall_trace_exit {
+ + struct trace_entry ent;
+ + int nr;
+ + unsigned long ret;
+ +};
+ +
+ +
/*
* trace_flag_type is an enumeration that holds different
* states when a trace occurs. These are:
* IRQS_OFF - interrupts were disabled
- * IRQS_NOSUPPORT - arch does not support irqs_disabled_flags
+ * IRQS_NOSUPPORT - arch does not support irqs_disabled_flags
* NEED_RESCED - reschedule is requested
* HARDIRQ - inside an interrupt handler
* SOFTIRQ - inside a softirq handler
- * CONT - multiple entries hold the trace item
*/
enum trace_flag_type {
TRACE_FLAG_IRQS_OFF = 0x01,
TRACE_FLAG_NEED_RESCHED = 0x04,
TRACE_FLAG_HARDIRQ = 0x08,
TRACE_FLAG_SOFTIRQ = 0x10,
- TRACE_FLAG_CONT = 0x20,
};
#define TRACE_BUF_SIZE 1024
*/
struct trace_array_cpu {
atomic_t disabled;
+ void *buffer_page; /* ring buffer spare */
/* these fields get copied into max-trace: */
unsigned long trace_idx;
do { \
IF_ASSIGN(var, ent, struct ftrace_entry, TRACE_FN); \
IF_ASSIGN(var, ent, struct ctx_switch_entry, 0); \
- IF_ASSIGN(var, ent, struct trace_field_cont, TRACE_CONT); \
IF_ASSIGN(var, ent, struct stack_entry, TRACE_STACK); \
IF_ASSIGN(var, ent, struct userstack_entry, TRACE_USER_STACK);\
IF_ASSIGN(var, ent, struct print_entry, TRACE_PRINT); \
++ IF_ASSIGN(var, ent, struct bprint_entry, TRACE_BPRINT); \
IF_ASSIGN(var, ent, struct special_entry, 0); \
IF_ASSIGN(var, ent, struct trace_mmiotrace_rw, \
TRACE_MMIO_RW); \
IF_ASSIGN(var, ent, struct ftrace_graph_ret_entry, \
TRACE_GRAPH_RET); \
IF_ASSIGN(var, ent, struct hw_branch_entry, TRACE_HW_BRANCHES);\
- IF_ASSIGN(var, ent, struct trace_power, TRACE_POWER); \
+ IF_ASSIGN(var, ent, struct trace_power, TRACE_POWER); \
+ IF_ASSIGN(var, ent, struct kmemtrace_alloc_entry, \
+ TRACE_KMEM_ALLOC); \
+ IF_ASSIGN(var, ent, struct kmemtrace_free_entry, \
+ TRACE_KMEM_FREE); \
+ + IF_ASSIGN(var, ent, struct syscall_trace_enter, \
+ + TRACE_SYSCALL_ENTER); \
+ + IF_ASSIGN(var, ent, struct syscall_trace_exit, \
+ + TRACE_SYSCALL_EXIT); \
__ftrace_bad_type(); \
} while (0)
enum print_line_t {
TRACE_TYPE_PARTIAL_LINE = 0, /* Retry after flushing the seq */
TRACE_TYPE_HANDLED = 1,
- TRACE_TYPE_UNHANDLED = 2 /* Relay to other output functions */
+ TRACE_TYPE_UNHANDLED = 2, /* Relay to other output functions */
+ TRACE_TYPE_NO_CONSUME = 3 /* Handled but ask to not consume */
};
* flags value in struct tracer_flags.
*/
struct tracer_opt {
- const char *name; /* Will appear on the trace_options file */
- u32 bit; /* Mask assigned in val field in tracer_flags */
+ const char *name; /* Will appear on the trace_options file */
+ u32 bit; /* Mask assigned in val field in tracer_flags */
};
/*
*/
struct tracer_flags {
u32 val;
- struct tracer_opt *opts;
+ struct tracer_opt *opts;
};
/* Makes more easy to define a tracer opt */
#define TRACER_OPT(s, b) .name = #s, .bit = b
-/*
- * A specific tracer, represented by methods that operate on a trace array:
+
+/**
+ * struct tracer - a specific tracer and its callbacks to interact with debugfs
+ * @name: the name chosen to select it on the available_tracers file
+ * @init: called when one switches to this tracer (echo name > current_tracer)
+ * @reset: called when one switches to another tracer
+ * @start: called when tracing is unpaused (echo 1 > tracing_enabled)
+ * @stop: called when tracing is paused (echo 0 > tracing_enabled)
+ * @open: called when the trace file is opened
+ * @pipe_open: called when the trace_pipe file is opened
+ * @wait_pipe: override how the user waits for traces on trace_pipe
+ * @close: called when the trace file is released
+ * @read: override the default read callback on trace_pipe
+ * @splice_read: override the default splice_read callback on trace_pipe
+ * @selftest: selftest to run on boot (see trace_selftest.c)
+ * @print_headers: override the first lines that describe your columns
+ * @print_line: callback that prints a trace
+ * @set_flag: signals one of your private flags changed (trace_options file)
+ * @flags: your private flags
*/
struct tracer {
const char *name;
- /* Your tracer should raise a warning if init fails */
int (*init)(struct trace_array *tr);
void (*reset)(struct trace_array *tr);
void (*start)(struct trace_array *tr);
void (*stop)(struct trace_array *tr);
void (*open)(struct trace_iterator *iter);
void (*pipe_open)(struct trace_iterator *iter);
+ void (*wait_pipe)(struct trace_iterator *iter);
void (*close)(struct trace_iterator *iter);
ssize_t (*read)(struct trace_iterator *iter,
struct file *filp, char __user *ubuf,
size_t cnt, loff_t *ppos);
+ ssize_t (*splice_read)(struct trace_iterator *iter,
+ struct file *filp,
+ loff_t *ppos,
+ struct pipe_inode_info *pipe,
+ size_t len,
+ unsigned int flags);
#ifdef CONFIG_FTRACE_STARTUP_TEST
int (*selftest)(struct tracer *trace,
struct trace_array *tr);
int (*set_flag)(u32 old_flags, u32 bit, int set);
struct tracer *next;
int print_max;
- struct tracer_flags *flags;
+ struct tracer_flags *flags;
+ struct tracer_stat *stats;
};
struct trace_seq {
unsigned int readpos;
};
+static inline void
+trace_seq_init(struct trace_seq *s)
+{
+ s->len = 0;
+ s->readpos = 0;
+}
+
+
+#define TRACE_PIPE_ALL_CPU -1
+
/*
* Trace iterator - used by printout routines who present trace
* results to users and which routines might sleep, etc:
struct trace_array *tr;
struct tracer *trace;
void *private;
+ int cpu_file;
+ struct mutex mutex;
struct ring_buffer_iter *buffer_iter[NR_CPUS];
/* The below is zeroed out in pipe_read */
cpumask_var_t started;
};
+int tracer_init(struct tracer *t, struct trace_array *tr);
int tracing_is_enabled(void);
void trace_wake_up(void);
void tracing_reset(struct trace_array *tr, int cpu);
struct dentry *tracing_init_dentry(void);
void init_tracer_sysprof_debugfs(struct dentry *d_tracer);
+struct ring_buffer_event;
+
+struct ring_buffer_event *trace_buffer_lock_reserve(struct trace_array *tr,
+ unsigned char type,
+ unsigned long len,
+ unsigned long flags,
+ int pc);
+void trace_buffer_unlock_commit(struct trace_array *tr,
+ struct ring_buffer_event *event,
+ unsigned long flags, int pc);
+
+struct ring_buffer_event *
+trace_current_buffer_lock_reserve(unsigned char type, unsigned long len,
+ unsigned long flags, int pc);
+void trace_current_buffer_unlock_commit(struct ring_buffer_event *event,
+ unsigned long flags, int pc);
+
struct trace_entry *tracing_get_trace_entry(struct trace_array *tr,
struct trace_array_cpu *data);
+
+struct trace_entry *trace_find_next_entry(struct trace_iterator *iter,
+ int *ent_cpu, u64 *ent_ts);
+
void tracing_generic_entry_update(struct trace_entry *entry,
unsigned long flags,
int pc);
+void default_wait_pipe(struct trace_iterator *iter);
+void poll_wait_pipe(struct trace_iterator *iter);
+
void ftrace(struct trace_array *tr,
struct trace_array_cpu *data,
unsigned long ip,
unsigned long parent_ip,
unsigned long flags, int pc);
void tracing_sched_switch_trace(struct trace_array *tr,
- struct trace_array_cpu *data,
struct task_struct *prev,
struct task_struct *next,
unsigned long flags, int pc);
void tracing_record_cmdline(struct task_struct *tsk);
void tracing_sched_wakeup_trace(struct trace_array *tr,
- struct trace_array_cpu *data,
struct task_struct *wakee,
struct task_struct *cur,
unsigned long flags, int pc);
unsigned long arg2,
unsigned long arg3, int pc);
void trace_function(struct trace_array *tr,
- struct trace_array_cpu *data,
unsigned long ip,
unsigned long parent_ip,
unsigned long flags, int pc);
void trace_graph_return(struct ftrace_graph_ret *trace);
int trace_graph_entry(struct ftrace_graph_ent *trace);
-void trace_hw_branch(struct trace_array *tr, u64 from, u64 to);
void tracing_start_cmdline_record(void);
void tracing_stop_cmdline_record(void);
void update_max_tr_single(struct trace_array *tr,
struct task_struct *tsk, int cpu);
-extern cycle_t ftrace_now(int cpu);
+void __trace_stack(struct trace_array *tr,
+ unsigned long flags,
+ int skip, int pc);
-#ifdef CONFIG_FUNCTION_TRACER
-void tracing_start_function_trace(void);
-void tracing_stop_function_trace(void);
-#else
-# define tracing_start_function_trace() do { } while (0)
-# define tracing_stop_function_trace() do { } while (0)
-#endif
+extern cycle_t ftrace_now(int cpu);
#ifdef CONFIG_CONTEXT_SWITCH_TRACER
typedef void
void *private;
struct tracer_switch_ops *next;
};
-
-char *trace_find_cmdline(int pid);
#endif /* CONFIG_CONTEXT_SWITCH_TRACER */
+extern char *trace_find_cmdline(int pid);
+
#ifdef CONFIG_DYNAMIC_FTRACE
extern unsigned long ftrace_update_tot_cnt;
#define DYN_FTRACE_TEST_NAME trace_selftest_dynamic_test_func
#ifdef CONFIG_FTRACE_STARTUP_TEST
extern int trace_selftest_startup_function(struct tracer *trace,
struct trace_array *tr);
+extern int trace_selftest_startup_function_graph(struct tracer *trace,
+ struct trace_array *tr);
extern int trace_selftest_startup_irqsoff(struct tracer *trace,
struct trace_array *tr);
extern int trace_selftest_startup_preemptoff(struct tracer *trace,
#endif /* CONFIG_FTRACE_STARTUP_TEST */
extern void *head_page(struct trace_array_cpu *data);
-extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...);
-extern void trace_seq_print_cont(struct trace_seq *s,
- struct trace_iterator *iter);
-
-extern int
-seq_print_ip_sym(struct trace_seq *s, unsigned long ip,
- unsigned long sym_flags);
-extern ssize_t trace_seq_to_user(struct trace_seq *s, char __user *ubuf,
- size_t cnt);
extern long ns2usecs(cycle_t nsec);
extern int
++trace_vbprintk(unsigned long ip, int depth, const char *fmt, va_list args);
++extern int
trace_vprintk(unsigned long ip, int depth, const char *fmt, va_list args);
extern unsigned long trace_flags;
TRACE_ITER_ANNOTATE = 0x2000,
TRACE_ITER_USERSTACKTRACE = 0x4000,
TRACE_ITER_SYM_USEROBJ = 0x8000,
- TRACE_ITER_PRINTK_MSGONLY = 0x10000
+ TRACE_ITER_PRINTK_MSGONLY = 0x10000,
+ TRACE_ITER_CONTEXT_INFO = 0x20000, /* Print pid/cpu/time */
+ TRACE_ITER_LATENCY_FMT = 0x40000,
};
/*
* preempt_enable (after a disable), a schedule might take place
* causing an infinite recursion.
*
- * To prevent this, we read the need_recshed flag before
+ * To prevent this, we read the need_resched flag before
* disabling preemption. When we want to enable preemption we
* check the flag, if it is set, then we call preempt_enable_no_resched.
* Otherwise, we call preempt_enable.
*
- * The rational for doing the above is that if need resched is set
+ * The rational for doing the above is that if need_resched is set
* and we have yet to reschedule, we are either in an atomic location
* (where we do not need to check for scheduling) or we are inside
* the scheduler and do not want to resched.
*
* This is a scheduler safe way to enable preemption and not miss
* any preemption checks. The disabled saved the state of preemption.
- * If resched is set, then we were either inside an atomic or
+ * If resched is set, then we are either inside an atomic or
* are inside the scheduler (we would have already scheduled
* otherwise). In this case, we do not want to call normal
* preempt_enable, but preempt_enable_no_resched instead.
}
#endif /* CONFIG_BRANCH_TRACER */
++/* set ring buffers to default size if not already done so */
++int tracing_update_buffers(void);
++
+/* trace event type bit fields, not numeric */
+enum {
+ TRACE_EVENT_TYPE_PRINTF = 1,
+ TRACE_EVENT_TYPE_RAW = 2,
+};
+
+struct ftrace_event_call {
+ char *name;
+ char *system;
+ struct dentry *dir;
+ int enabled;
+ int (*regfunc)(void);
+ void (*unregfunc)(void);
+ int id;
+ int (*raw_init)(void);
+ int (*show_format)(struct trace_seq *s);
+};
+
+void event_trace_printk(unsigned long ip, const char *fmt, ...);
+extern struct ftrace_event_call __start_ftrace_events[];
+extern struct ftrace_event_call __stop_ftrace_events[];
+
++extern const char *__start___trace_bprintk_fmt[];
++extern const char *__stop___trace_bprintk_fmt[];
++
++/*
++ * The double __builtin_constant_p is because gcc will give us an error
++ * if we try to allocate the static variable to fmt if it is not a
++ * constant. Even with the outer if statement optimizing out.
++ */
++#define event_trace_printk(ip, fmt, args...) \
++do { \
++ __trace_printk_check_format(fmt, ##args); \
++ tracing_record_cmdline(current); \
++ if (__builtin_constant_p(fmt)) { \
++ static const char *trace_printk_fmt \
++ __attribute__((section("__trace_printk_fmt"))) = \
++ __builtin_constant_p(fmt) ? fmt : NULL; \
++ \
++ __trace_bprintk(ip, trace_printk_fmt, ##args); \
++ } else \
++ __trace_printk(ip, fmt, ##args); \
++} while (0)
++
#endif /* _LINUX_KERNEL_TRACE_H */
projects / platform / adaptation / renesas_rcar / renesas_kernel.git / commitdiff