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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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#ifndef _LINUX_TRACE_EVENT_H#define _LINUX_TRACE_EVENT_H
#include <linux/ring_buffer.h>#include <linux/trace_seq.h>#include <linux/percpu.h>#include <linux/hardirq.h>#include <linux/perf_event.h>#include <linux/tracepoint.h>
struct trace_array;struct array_buffer;struct tracer;struct dentry;struct bpf_prog;union bpf_attr;
/* Used for event string fields when they are NULL */#define EVENT_NULL_STR "(null)"
const char *trace_print_flags_seq(struct trace_seq *p, const char *delim, unsigned long flags, const struct trace_print_flags *flag_array, size_t flag_array_size);
const char *trace_print_symbols_seq(struct trace_seq *p, unsigned long val, const struct trace_print_flags *symbol_array, size_t symbol_array_size);
#if BITS_PER_LONG == 32const char *trace_print_flags_seq_u64(struct trace_seq *p, const char *delim, unsigned long long flags, const struct trace_print_flags_u64 *flag_array, size_t flag_array_size);
const char *trace_print_symbols_seq_u64(struct trace_seq *p, unsigned long long val, const struct trace_print_flags_u64 *symbol_array, size_t symbol_array_size);#endif
struct trace_iterator;struct trace_event;
const char *trace_print_bitmask_seq(struct trace_iterator *iter, void *bitmask_ptr, unsigned int bitmask_size);
const char *trace_print_hex_seq(struct trace_seq *p, const unsigned char *buf, int len, bool concatenate);
const char *trace_print_array_seq(struct trace_seq *p, const void *buf, int count, size_t el_size);
const char *trace_print_hex_dump_seq(struct trace_seq *p, const char *prefix_str, int prefix_type, int rowsize, int groupsize, const void *buf, size_t len, bool ascii);
int trace_raw_output_prep(struct trace_iterator *iter, struct trace_event *event);extern __printf(2, 3)void trace_event_printf(struct trace_iterator *iter, const char *fmt, ...);
/* Used to find the offset and length of dynamic fields in trace events */struct trace_dynamic_info {#ifdef CONFIG_CPU_BIG_ENDIAN u16 len; u16 offset;#else u16 offset; u16 len;#endif} __packed;
/* * The trace entry - the most basic unit of tracing. This is what * is printed in the end as a single line in the trace output, such as: * * bash-15816 [01] 235.197585: idle_cpu <- irq_enter */struct trace_entry { unsigned short type; unsigned char flags; unsigned char preempt_count; int pid;};
#define TRACE_EVENT_TYPE_MAX \ ((1 << (sizeof(((struct trace_entry *)0)->type) * 8)) - 1)
/* * Trace iterator - used by printout routines who present trace * results to users and which routines might sleep, etc: */struct trace_iterator { struct trace_array *tr; struct tracer *trace; struct array_buffer *array_buffer; void *private; int cpu_file; struct mutex mutex; struct ring_buffer_iter **buffer_iter; unsigned long iter_flags; void *temp; /* temp holder */ unsigned int temp_size; char *fmt; /* modified format holder */ unsigned int fmt_size; atomic_t wait_index;
/* trace_seq for __print_flags() and __print_symbolic() etc. */ struct trace_seq tmp_seq;
cpumask_var_t started;
/* Set when the file is closed to prevent new waiters */ bool closed;
/* it's true when current open file is snapshot */ bool snapshot;
/* The below is zeroed out in pipe_read */ struct trace_seq seq; struct trace_entry *ent; unsigned long lost_events; int leftover; int ent_size; int cpu; u64 ts;
loff_t pos; long idx;
/* All new field here will be zeroed out in pipe_read */};
enum trace_iter_flags { TRACE_FILE_LAT_FMT = 1, TRACE_FILE_ANNOTATE = 2, TRACE_FILE_TIME_IN_NS = 4, TRACE_FILE_PAUSE = 8,};
typedef enum print_line_t (*trace_print_func)(struct trace_iterator *iter, int flags, struct trace_event *event);
struct trace_event_functions { trace_print_func trace; trace_print_func raw; trace_print_func hex; trace_print_func binary;};
struct trace_event { struct hlist_node node; int type; struct trace_event_functions *funcs;};
extern int register_trace_event(struct trace_event *event);extern int unregister_trace_event(struct trace_event *event);
/* Return values for print_line callback */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_NO_CONSUME = 3 /* Handled but ask to not consume */};
enum print_line_t trace_handle_return(struct trace_seq *s);
static inline void tracing_generic_entry_update(struct trace_entry *entry, unsigned short type, unsigned int trace_ctx){ entry->preempt_count = trace_ctx & 0xff; entry->pid = current->pid; entry->type = type; entry->flags = trace_ctx >> 16;}
unsigned int tracing_gen_ctx_irq_test(unsigned int irqs_status);
enum trace_flag_type { TRACE_FLAG_IRQS_OFF = 0x01, TRACE_FLAG_NEED_RESCHED_LAZY = 0x02, TRACE_FLAG_NEED_RESCHED = 0x04, TRACE_FLAG_HARDIRQ = 0x08, TRACE_FLAG_SOFTIRQ = 0x10, TRACE_FLAG_PREEMPT_RESCHED = 0x20, TRACE_FLAG_NMI = 0x40, TRACE_FLAG_BH_OFF = 0x80,};
static inline unsigned int tracing_gen_ctx_flags(unsigned long irqflags){ unsigned int irq_status = irqs_disabled_flags(irqflags) ? TRACE_FLAG_IRQS_OFF : 0; return tracing_gen_ctx_irq_test(irq_status);}static inline unsigned int tracing_gen_ctx(void){ unsigned long irqflags;
local_save_flags(irqflags); return tracing_gen_ctx_flags(irqflags);}
static inline unsigned int tracing_gen_ctx_dec(void){ unsigned int trace_ctx;
trace_ctx = tracing_gen_ctx(); /* * Subtract one from the preemption counter if preemption is enabled, * see trace_event_buffer_reserve()for details. */ if (IS_ENABLED(CONFIG_PREEMPTION)) trace_ctx--; return trace_ctx;}
struct trace_event_file;
struct ring_buffer_event *trace_event_buffer_lock_reserve(struct trace_buffer **current_buffer, struct trace_event_file *trace_file, int type, unsigned long len, unsigned int trace_ctx);
#define TRACE_RECORD_CMDLINE BIT(0)#define TRACE_RECORD_TGID BIT(1)
void tracing_record_taskinfo(struct task_struct *task, int flags);void tracing_record_taskinfo_sched_switch(struct task_struct *prev, struct task_struct *next, int flags);
void tracing_record_cmdline(struct task_struct *task);void tracing_record_tgid(struct task_struct *task);
int trace_output_call(struct trace_iterator *iter, char *name, char *fmt, ...) __printf(3, 4);
struct event_filter;
enum trace_reg { TRACE_REG_REGISTER, TRACE_REG_UNREGISTER,#ifdef CONFIG_PERF_EVENTS TRACE_REG_PERF_REGISTER, TRACE_REG_PERF_UNREGISTER, TRACE_REG_PERF_OPEN, TRACE_REG_PERF_CLOSE, /* * These (ADD/DEL) use a 'boolean' return value, where 1 (true) means a * custom action was taken and the default action is not to be * performed. */ TRACE_REG_PERF_ADD, TRACE_REG_PERF_DEL,#endif};
struct trace_event_call;
#define TRACE_FUNCTION_TYPE ((const char *)~0UL)
struct trace_event_fields { const char *type; union { struct { const char *name; const int size; const int align; const unsigned int is_signed:1; unsigned int needs_test:1; const int filter_type; const int len; }; int (*define_fields)(struct trace_event_call *); };};
struct trace_event_class { const char *system; void *probe;#ifdef CONFIG_PERF_EVENTS void *perf_probe;#endif int (*reg)(struct trace_event_call *event, enum trace_reg type, void *data); struct trace_event_fields *fields_array; struct list_head *(*get_fields)(struct trace_event_call *); struct list_head fields; int (*raw_init)(struct trace_event_call *);#ifdef CONFIG_BPF_EVENTS /* * Per-template BTF ids set by DECLARE_EVENT_CLASS via BTF_ID() and * patched by resolve_btfids at link time. NULL for handcrafted classes. * [0] FUNC __bpf_trace_<template> * [1] STRUCT trace_event_raw_<template> */ const u32 *btf_ids;#endif};
extern int trace_event_reg(struct trace_event_call *event, enum trace_reg type, void *data);
struct trace_event_buffer { struct trace_buffer *buffer; struct ring_buffer_event *event; struct trace_event_file *trace_file; void *entry; unsigned int trace_ctx; struct pt_regs *regs;};
void *trace_event_buffer_reserve(struct trace_event_buffer *fbuffer, struct trace_event_file *trace_file, unsigned long len);
void trace_event_buffer_commit(struct trace_event_buffer *fbuffer);
enum { TRACE_EVENT_FL_CAP_ANY_BIT, TRACE_EVENT_FL_NO_SET_FILTER_BIT, TRACE_EVENT_FL_IGNORE_ENABLE_BIT, TRACE_EVENT_FL_TRACEPOINT_BIT, TRACE_EVENT_FL_DYNAMIC_BIT, TRACE_EVENT_FL_KPROBE_BIT, TRACE_EVENT_FL_UPROBE_BIT, TRACE_EVENT_FL_EPROBE_BIT, TRACE_EVENT_FL_FPROBE_BIT, TRACE_EVENT_FL_CUSTOM_BIT, TRACE_EVENT_FL_TEST_STR_BIT,};
/* * Event flags: * CAP_ANY - Any user can enable for perf * NO_SET_FILTER - Set when filter has error and is to be ignored * IGNORE_ENABLE - For trace internal events, do not enable with debugfs file * TRACEPOINT - Event is a tracepoint * DYNAMIC - Event is a dynamic event (created at run time) * KPROBE - Event is a kprobe * UPROBE - Event is a uprobe * EPROBE - Event is an event probe * FPROBE - Event is an function probe * CUSTOM - Event is a custom event (to be attached to an exsiting tracepoint) * This is set when the custom event has not been attached * to a tracepoint yet, then it is cleared when it is. * TEST_STR - The event has a "%s" that points to a string outside the event */enum { TRACE_EVENT_FL_CAP_ANY = (1 << TRACE_EVENT_FL_CAP_ANY_BIT), TRACE_EVENT_FL_NO_SET_FILTER = (1 << TRACE_EVENT_FL_NO_SET_FILTER_BIT), TRACE_EVENT_FL_IGNORE_ENABLE = (1 << TRACE_EVENT_FL_IGNORE_ENABLE_BIT), TRACE_EVENT_FL_TRACEPOINT = (1 << TRACE_EVENT_FL_TRACEPOINT_BIT), TRACE_EVENT_FL_DYNAMIC = (1 << TRACE_EVENT_FL_DYNAMIC_BIT), TRACE_EVENT_FL_KPROBE = (1 << TRACE_EVENT_FL_KPROBE_BIT), TRACE_EVENT_FL_UPROBE = (1 << TRACE_EVENT_FL_UPROBE_BIT), TRACE_EVENT_FL_EPROBE = (1 << TRACE_EVENT_FL_EPROBE_BIT), TRACE_EVENT_FL_FPROBE = (1 << TRACE_EVENT_FL_FPROBE_BIT), TRACE_EVENT_FL_CUSTOM = (1 << TRACE_EVENT_FL_CUSTOM_BIT), TRACE_EVENT_FL_TEST_STR = (1 << TRACE_EVENT_FL_TEST_STR_BIT),};
#define TRACE_EVENT_FL_UKPROBE (TRACE_EVENT_FL_KPROBE | TRACE_EVENT_FL_UPROBE)
struct trace_event_call { struct list_head list; struct trace_event_class *class; union { const char *name; /* Set TRACE_EVENT_FL_TRACEPOINT flag when using "tp" */ struct tracepoint *tp; }; struct trace_event event; char *print_fmt; /* * Static events can disappear with modules, * where as dynamic ones need their own ref count. */ union { void *module; atomic_t refcnt; }; void *data;
/* See the TRACE_EVENT_FL_* flags above */ int flags; /* static flags of different events */
#ifdef CONFIG_PERF_EVENTS int perf_refcount; struct hlist_head __percpu *perf_events; struct bpf_prog_array __rcu *prog_array;
int (*perf_perm)(struct trace_event_call *, struct perf_event *);#endif};
#ifdef CONFIG_DYNAMIC_EVENTSbool trace_event_dyn_try_get_ref(struct trace_event_call *call);void trace_event_dyn_put_ref(struct trace_event_call *call);bool trace_event_dyn_busy(struct trace_event_call *call);#elsestatic inline bool trace_event_dyn_try_get_ref(struct trace_event_call *call){ /* Without DYNAMIC_EVENTS configured, nothing should be calling this */ return false;}static inline void trace_event_dyn_put_ref(struct trace_event_call *call){}static inline bool trace_event_dyn_busy(struct trace_event_call *call){ /* Nothing should call this without DYNAIMIC_EVENTS configured. */ return true;}#endif
static inline bool trace_event_try_get_ref(struct trace_event_call *call){ if (call->flags & TRACE_EVENT_FL_DYNAMIC) return trace_event_dyn_try_get_ref(call); else return try_module_get(call->module);}
static inline void trace_event_put_ref(struct trace_event_call *call){ if (call->flags & TRACE_EVENT_FL_DYNAMIC) trace_event_dyn_put_ref(call); else module_put(call->module);}
#ifdef CONFIG_PERF_EVENTSstatic inline bool bpf_prog_array_valid(struct trace_event_call *call){ /* * This inline function checks whether call->prog_array * is valid or not. The function is called in various places, * outside rcu_read_lock/unlock, as a heuristic to speed up execution. * * If this function returns true, and later call->prog_array * becomes false inside rcu_read_lock/unlock region, * we bail out then. If this function return false, * there is a risk that we might miss a few events if the checking * were delayed until inside rcu_read_lock/unlock region and * call->prog_array happened to become non-NULL then. * * Here, READ_ONCE() is used instead of rcu_access_pointer(). * rcu_access_pointer() requires the actual definition of * "struct bpf_prog_array" while READ_ONCE() only needs * a declaration of the same type. */ return !!READ_ONCE(call->prog_array);}#endif
static inline const char *trace_event_name(struct trace_event_call *call){ if (call->flags & TRACE_EVENT_FL_CUSTOM) return call->name; else if (call->flags & TRACE_EVENT_FL_TRACEPOINT) return call->tp ? call->tp->name : NULL; else return call->name;}
static inline struct list_head *trace_get_fields(struct trace_event_call *event_call){ if (!event_call->class->get_fields) return &event_call->class->fields; return event_call->class->get_fields(event_call);}
struct trace_subsystem_dir;
enum { EVENT_FILE_FL_ENABLED_BIT, EVENT_FILE_FL_RECORDED_CMD_BIT, EVENT_FILE_FL_RECORDED_TGID_BIT, EVENT_FILE_FL_FILTERED_BIT, EVENT_FILE_FL_NO_SET_FILTER_BIT, EVENT_FILE_FL_SOFT_DISABLED_BIT, EVENT_FILE_FL_TRIGGER_MODE_BIT, EVENT_FILE_FL_TRIGGER_COND_BIT, EVENT_FILE_FL_PID_FILTER_BIT, EVENT_FILE_FL_WAS_ENABLED_BIT, EVENT_FILE_FL_FREED_BIT,};
extern struct trace_event_file *trace_get_event_file(const char *instance, const char *system, const char *event);extern void trace_put_event_file(struct trace_event_file *file);
#define MAX_DYNEVENT_CMD_LEN (2048)
enum dynevent_type { DYNEVENT_TYPE_SYNTH = 1, DYNEVENT_TYPE_KPROBE, DYNEVENT_TYPE_NONE,};
struct dynevent_cmd;
typedef int (*dynevent_create_fn_t)(struct dynevent_cmd *cmd);
struct dynevent_cmd { struct seq_buf seq; const char *event_name; unsigned int n_fields; enum dynevent_type type; dynevent_create_fn_t run_command; void *private_data;};
extern int dynevent_create(struct dynevent_cmd *cmd);
extern int synth_event_delete(const char *name);
extern void synth_event_cmd_init(struct dynevent_cmd *cmd, char *buf, int maxlen);
extern int __synth_event_gen_cmd_start(struct dynevent_cmd *cmd, const char *name, struct module *mod, ...);
#define synth_event_gen_cmd_start(cmd, name, mod, ...) \ __synth_event_gen_cmd_start(cmd, name, mod, ## __VA_ARGS__, NULL)
struct synth_field_desc { const char *type; const char *name;};
extern int synth_event_gen_cmd_array_start(struct dynevent_cmd *cmd, const char *name, struct module *mod, struct synth_field_desc *fields, unsigned int n_fields);extern int synth_event_create(const char *name, struct synth_field_desc *fields, unsigned int n_fields, struct module *mod);
extern int synth_event_add_field(struct dynevent_cmd *cmd, const char *type, const char *name);extern int synth_event_add_field_str(struct dynevent_cmd *cmd, const char *type_name);extern int synth_event_add_fields(struct dynevent_cmd *cmd, struct synth_field_desc *fields, unsigned int n_fields);
#define synth_event_gen_cmd_end(cmd) \ dynevent_create(cmd)
struct synth_event;
struct synth_event_trace_state { struct trace_event_buffer fbuffer; struct synth_trace_event *entry; struct trace_buffer *buffer; struct synth_event *event; unsigned int cur_field; unsigned int n_u64; bool disabled; bool add_next; bool add_name;};
extern int synth_event_trace(struct trace_event_file *file, unsigned int n_vals, ...);extern int synth_event_trace_array(struct trace_event_file *file, u64 *vals, unsigned int n_vals);extern int synth_event_trace_start(struct trace_event_file *file, struct synth_event_trace_state *trace_state);extern int synth_event_add_next_val(u64 val, struct synth_event_trace_state *trace_state);extern int synth_event_add_val(const char *field_name, u64 val, struct synth_event_trace_state *trace_state);extern int synth_event_trace_end(struct synth_event_trace_state *trace_state);
extern int kprobe_event_delete(const char *name);
extern void kprobe_event_cmd_init(struct dynevent_cmd *cmd, char *buf, int maxlen);
#define kprobe_event_gen_cmd_start(cmd, name, loc, ...) \ __kprobe_event_gen_cmd_start(cmd, false, name, loc, ## __VA_ARGS__, NULL)
#define kretprobe_event_gen_cmd_start(cmd, name, loc, ...) \ __kprobe_event_gen_cmd_start(cmd, true, name, loc, ## __VA_ARGS__, NULL)
extern int __kprobe_event_gen_cmd_start(struct dynevent_cmd *cmd, bool kretprobe, const char *name, const char *loc, ...);
#define kprobe_event_add_fields(cmd, ...) \ __kprobe_event_add_fields(cmd, ## __VA_ARGS__, NULL)
#define kprobe_event_add_field(cmd, field) \ __kprobe_event_add_fields(cmd, field, NULL)
extern int __kprobe_event_add_fields(struct dynevent_cmd *cmd, ...);
#define kprobe_event_gen_cmd_end(cmd) \ dynevent_create(cmd)
#define kretprobe_event_gen_cmd_end(cmd) \ dynevent_create(cmd)
/* * Event file flags: * ENABLED - The event is enabled * RECORDED_CMD - The comms should be recorded at sched_switch * RECORDED_TGID - The tgids should be recorded at sched_switch * FILTERED - The event has a filter attached * NO_SET_FILTER - Set when filter has error and is to be ignored * SOFT_DISABLED - When set, do not trace the event (even though its * tracepoint may be enabled) * TRIGGER_MODE - When set, invoke the triggers associated with the event * TRIGGER_COND - When set, one or more triggers has an associated filter * PID_FILTER - When set, the event is filtered based on pid * WAS_ENABLED - Set when enabled to know to clear trace on module removal * FREED - File descriptor is freed, all fields should be considered invalid */enum { EVENT_FILE_FL_ENABLED = (1 << EVENT_FILE_FL_ENABLED_BIT), EVENT_FILE_FL_RECORDED_CMD = (1 << EVENT_FILE_FL_RECORDED_CMD_BIT), EVENT_FILE_FL_RECORDED_TGID = (1 << EVENT_FILE_FL_RECORDED_TGID_BIT), EVENT_FILE_FL_FILTERED = (1 << EVENT_FILE_FL_FILTERED_BIT), EVENT_FILE_FL_NO_SET_FILTER = (1 << EVENT_FILE_FL_NO_SET_FILTER_BIT), EVENT_FILE_FL_SOFT_DISABLED = (1 << EVENT_FILE_FL_SOFT_DISABLED_BIT), EVENT_FILE_FL_TRIGGER_MODE = (1 << EVENT_FILE_FL_TRIGGER_MODE_BIT), EVENT_FILE_FL_TRIGGER_COND = (1 << EVENT_FILE_FL_TRIGGER_COND_BIT), EVENT_FILE_FL_PID_FILTER = (1 << EVENT_FILE_FL_PID_FILTER_BIT), EVENT_FILE_FL_WAS_ENABLED = (1 << EVENT_FILE_FL_WAS_ENABLED_BIT), EVENT_FILE_FL_FREED = (1 << EVENT_FILE_FL_FREED_BIT),};
struct trace_event_file { struct list_head list; struct trace_event_call *event_call; struct event_filter __rcu *filter; struct eventfs_inode *ei; struct trace_array *tr; struct trace_subsystem_dir *system; struct list_head triggers;
/* * 32 bit flags: * bit 0: enabled * bit 1: enabled cmd record * bit 2: enable/disable with the soft disable bit * bit 3: soft disabled * bit 4: trigger enabled * * Note: The bits must be set atomically to prevent races * from other writers. Reads of flags do not need to be in * sync as they occur in critical sections. But the way flags * is currently used, these changes do not affect the code * except that when a change is made, it may have a slight * delay in propagating the changes to other CPUs due to * caching and such. Which is mostly OK ;-) */ unsigned long flags; refcount_t ref; /* ref count for opened files */ atomic_t sm_ref; /* soft-mode reference counter */ atomic_t tm_ref; /* trigger-mode reference counter */};
#ifdef CONFIG_HIST_TRIGGERSextern struct irq_work hist_poll_work;extern wait_queue_head_t hist_poll_wq;
static inline void hist_poll_wakeup(void){ if (wq_has_sleeper(&hist_poll_wq)) irq_work_queue(&hist_poll_work);}
#define hist_poll_wait(file, wait) \ poll_wait(file, &hist_poll_wq, wait)
#elsestatic inline void hist_poll_wakeup(void){}#endif
#define __TRACE_EVENT_FLAGS(name, value) \ static int __init trace_init_flags_##name(void) \ { \ event_##name.flags |= value; \ return 0; \ } \ early_initcall(trace_init_flags_##name);
#define __TRACE_EVENT_PERF_PERM(name, expr...) \ static int perf_perm_##name(struct trace_event_call *tp_event, \ struct perf_event *p_event) \ { \ return ({ expr; }); \ } \ static int __init trace_init_perf_perm_##name(void) \ { \ event_##name.perf_perm = &perf_perm_##name; \ return 0; \ } \ early_initcall(trace_init_perf_perm_##name);
#define PERF_MAX_TRACE_SIZE 8192
#define MAX_FILTER_STR_VAL 256U /* Should handle KSYM_SYMBOL_LEN */
enum event_trigger_type { ETT_NONE = (0), ETT_TRACE_ONOFF = (1 << 0), ETT_SNAPSHOT = (1 << 1), ETT_STACKTRACE = (1 << 2), ETT_EVENT_ENABLE = (1 << 3), ETT_EVENT_HIST = (1 << 4), ETT_HIST_ENABLE = (1 << 5), ETT_EVENT_EPROBE = (1 << 6),};
extern int filter_match_preds(struct event_filter *filter, void *rec);
extern enum event_trigger_typeevent_triggers_call(struct trace_event_file *file, struct trace_buffer *buffer, void *rec, struct ring_buffer_event *event);extern voidevent_triggers_post_call(struct trace_event_file *file, enum event_trigger_type tt);
bool trace_event_ignore_this_pid(struct trace_event_file *trace_file);
bool __trace_trigger_soft_disabled(struct trace_event_file *file);
/** * trace_trigger_soft_disabled - do triggers and test if soft disabled * @file: The file pointer of the event to test * * If any triggers without filters are attached to this event, they * will be called here. If the event is soft disabled and has no * triggers that require testing the fields, it will return true, * otherwise false. */static __always_inline booltrace_trigger_soft_disabled(struct trace_event_file *file){ unsigned long eflags = file->flags;
if (likely(!(eflags & (EVENT_FILE_FL_TRIGGER_MODE | EVENT_FILE_FL_SOFT_DISABLED | EVENT_FILE_FL_PID_FILTER)))) return false;
if (likely(eflags & EVENT_FILE_FL_TRIGGER_COND)) return false;
return __trace_trigger_soft_disabled(file);}
#ifdef CONFIG_BPF_EVENTSunsigned int trace_call_bpf(struct trace_event_call *call, void *ctx);unsigned int trace_call_bpf_faultable(struct trace_event_call *call, void *ctx);int perf_event_attach_bpf_prog(struct perf_event *event, struct bpf_prog *prog, u64 bpf_cookie);void perf_event_detach_bpf_prog(struct perf_event *event);int perf_event_query_prog_array(struct perf_event *event, void __user *info);
struct bpf_raw_tp_link;int bpf_probe_register(struct bpf_raw_event_map *btp, struct bpf_raw_tp_link *link);int bpf_probe_unregister(struct bpf_raw_event_map *btp, struct bpf_raw_tp_link *link);
struct bpf_raw_event_map *bpf_get_raw_tracepoint(const char *name);void bpf_put_raw_tracepoint(struct bpf_raw_event_map *btp);int bpf_get_perf_event_info(const struct perf_event *event, u32 *prog_id, u32 *fd_type, const char **buf, u64 *probe_offset, u64 *probe_addr, unsigned long *missed);int bpf_kprobe_multi_link_attach(const union bpf_attr *attr, struct bpf_prog *prog);int bpf_uprobe_multi_link_attach(const union bpf_attr *attr, struct bpf_prog *prog);int bpf_tracing_multi_attach(struct bpf_prog *prog, const union bpf_attr *attr);#elsestatic inline unsigned int trace_call_bpf(struct trace_event_call *call, void *ctx){ return 1;}
static inline unsigned int trace_call_bpf_faultable(struct trace_event_call *call, void *ctx){ return 1;}
static inline intperf_event_attach_bpf_prog(struct perf_event *event, struct bpf_prog *prog, u64 bpf_cookie){ return -EOPNOTSUPP;}
static inline void perf_event_detach_bpf_prog(struct perf_event *event) { }
static inline intperf_event_query_prog_array(struct perf_event *event, void __user *info){ return -EOPNOTSUPP;}struct bpf_raw_tp_link;static inline int bpf_probe_register(struct bpf_raw_event_map *btp, struct bpf_raw_tp_link *link){ return -EOPNOTSUPP;}static inline int bpf_probe_unregister(struct bpf_raw_event_map *btp, struct bpf_raw_tp_link *link){ return -EOPNOTSUPP;}static inline struct bpf_raw_event_map *bpf_get_raw_tracepoint(const char *name){ return NULL;}static inline void bpf_put_raw_tracepoint(struct bpf_raw_event_map *btp){}static inline int bpf_get_perf_event_info(const struct perf_event *event, u32 *prog_id, u32 *fd_type, const char **buf, u64 *probe_offset, u64 *probe_addr, unsigned long *missed){ return -EOPNOTSUPP;}static inline intbpf_kprobe_multi_link_attach(const union bpf_attr *attr, struct bpf_prog *prog){ return -EOPNOTSUPP;}static inline intbpf_uprobe_multi_link_attach(const union bpf_attr *attr, struct bpf_prog *prog){ return -EOPNOTSUPP;}static inline intbpf_tracing_multi_attach(struct bpf_prog *prog, const union bpf_attr *attr){ return -EOPNOTSUPP;}#endif
enum { FILTER_OTHER = 0, FILTER_STATIC_STRING, FILTER_DYN_STRING, FILTER_RDYN_STRING, FILTER_PTR_STRING, FILTER_TRACE_FN, FILTER_CPUMASK, FILTER_COMM, FILTER_CPU, FILTER_STACKTRACE, FILTER_WITHIN,};
extern int trace_event_raw_init(struct trace_event_call *call);extern int trace_define_field(struct trace_event_call *call, const char *type, const char *name, int offset, int size, int is_signed, int filter_type);extern int trace_add_event_call(struct trace_event_call *call);extern int trace_remove_event_call(struct trace_event_call *call);extern int trace_event_get_offsets(struct trace_event_call *call);
int ftrace_set_clr_event(struct trace_array *tr, const char *buf, int set, bool handle_filter);int trace_set_clr_event(const char *system, const char *event, int set);int trace_array_set_clr_event(struct trace_array *tr, const char *system, const char *event, bool enable);
#ifdef CONFIG_PERF_EVENTSstruct perf_event;
DECLARE_PER_CPU(struct pt_regs, perf_trace_regs);
extern int perf_trace_init(struct perf_event *event);extern void perf_trace_destroy(struct perf_event *event);extern int perf_trace_add(struct perf_event *event, int flags);extern void perf_trace_del(struct perf_event *event, int flags);#ifdef CONFIG_KPROBE_EVENTSextern int perf_kprobe_init(struct perf_event *event, bool is_retprobe);extern void perf_kprobe_destroy(struct perf_event *event);extern int bpf_get_kprobe_info(const struct perf_event *event, u32 *fd_type, const char **symbol, u64 *probe_offset, u64 *probe_addr, unsigned long *missed, bool perf_type_tracepoint);#endif#ifdef CONFIG_UPROBE_EVENTSextern int perf_uprobe_init(struct perf_event *event, unsigned long ref_ctr_offset, bool is_retprobe);extern void perf_uprobe_destroy(struct perf_event *event);extern int bpf_get_uprobe_info(const struct perf_event *event, u32 *fd_type, const char **filename, u64 *probe_offset, u64 *probe_addr, bool perf_type_tracepoint);#endifextern int ftrace_profile_set_filter(struct perf_event *event, int event_id, char *filter_str);extern void ftrace_profile_free_filter(struct perf_event *event);void perf_trace_buf_update(void *record, u16 type);void *perf_trace_buf_alloc(int size, struct pt_regs **regs, int *rctxp);
int perf_event_set_bpf_prog(struct perf_event *event, struct bpf_prog *prog, u64 bpf_cookie);void perf_event_free_bpf_prog(struct perf_event *event);
void bpf_trace_run1(struct bpf_raw_tp_link *link, u64 arg1);void bpf_trace_run2(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2);void bpf_trace_run3(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2, u64 arg3);void bpf_trace_run4(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2, u64 arg3, u64 arg4);void bpf_trace_run5(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2, u64 arg3, u64 arg4, u64 arg5);void bpf_trace_run6(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2, u64 arg3, u64 arg4, u64 arg5, u64 arg6);void bpf_trace_run7(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2, u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7);void bpf_trace_run8(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2, u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7, u64 arg8);void bpf_trace_run9(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2, u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7, u64 arg8, u64 arg9);void bpf_trace_run10(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2, u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7, u64 arg8, u64 arg9, u64 arg10);void bpf_trace_run11(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2, u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7, u64 arg8, u64 arg9, u64 arg10, u64 arg11);void bpf_trace_run12(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2, u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7, u64 arg8, u64 arg9, u64 arg10, u64 arg11, u64 arg12);void perf_trace_run_bpf_submit(void *raw_data, int size, int rctx, struct trace_event_call *call, u64 count, struct pt_regs *regs, struct hlist_head *head, struct task_struct *task);
static inline voidperf_trace_buf_submit(void *raw_data, int size, int rctx, u16 type, u64 count, struct pt_regs *regs, void *head, struct task_struct *task){ perf_tp_event(type, count, raw_data, size, regs, head, rctx, task);}
#endif
#define TRACE_EVENT_STR_MAX 512
/* * gcc warns that you can not use a va_list in an inlined * function. But lets me make it into a macro :-/ */#define __trace_event_vstr_len(fmt, va) \({ \ va_list __ap; \ int __ret; \ \ va_copy(__ap, *(va)); \ __ret = vsnprintf(NULL, 0, fmt, __ap) + 1; \ va_end(__ap); \ \ min(__ret, TRACE_EVENT_STR_MAX); \})
#endif /* _LINUX_TRACE_EVENT_H */
/* * Note: we keep the TRACE_CUSTOM_EVENT outside the include file ifdef protection. * This is due to the way trace custom events work. If a file includes two * trace event headers under one "CREATE_CUSTOM_TRACE_EVENTS" the first include * will override the TRACE_CUSTOM_EVENT and break the second include. */
#ifndef TRACE_CUSTOM_EVENT
#define DECLARE_CUSTOM_EVENT_CLASS(name, proto, args, tstruct, assign, print)#define DEFINE_CUSTOM_EVENT(template, name, proto, args)#define TRACE_CUSTOM_EVENT(name, proto, args, struct, assign, print)
#endif /* ifdef TRACE_CUSTOM_EVENT (see note above) */