struct trace_event_file *trace_file,
int type, unsigned long len,
unsigned long flags, int pc);
-struct ring_buffer_event *
-trace_current_buffer_lock_reserve(struct ring_buffer **current_buffer,
- int type, unsigned long len,
- unsigned long flags, int pc);
-void trace_buffer_unlock_commit(struct trace_array *tr,
- struct ring_buffer *buffer,
- struct ring_buffer_event *event,
- unsigned long flags, int pc);
-void trace_buffer_unlock_commit_regs(struct trace_array *tr,
- struct ring_buffer *buffer,
- struct ring_buffer_event *event,
- unsigned long flags, int pc,
- struct pt_regs *regs);
-void trace_current_buffer_discard_commit(struct ring_buffer *buffer,
- struct ring_buffer_event *event);
void tracing_record_cmdline(struct task_struct *tsk);
TRACE_EVENT_FL_NO_SET_FILTER_BIT,
TRACE_EVENT_FL_IGNORE_ENABLE_BIT,
TRACE_EVENT_FL_WAS_ENABLED_BIT,
- TRACE_EVENT_FL_USE_CALL_FILTER_BIT,
TRACE_EVENT_FL_TRACEPOINT_BIT,
TRACE_EVENT_FL_KPROBE_BIT,
TRACE_EVENT_FL_UPROBE_BIT,
* WAS_ENABLED - Set and stays set when an event was ever enabled
* (used for module unloading, if a module event is enabled,
* it is best to clear the buffers that used it).
- * USE_CALL_FILTER - For trace internal events, don't use file filter
* TRACEPOINT - Event is a tracepoint
* KPROBE - Event is a kprobe
* UPROBE - Event is a uprobe
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_WAS_ENABLED = (1 << TRACE_EVENT_FL_WAS_ENABLED_BIT),
- TRACE_EVENT_FL_USE_CALL_FILTER = (1 << TRACE_EVENT_FL_USE_CALL_FILTER_BIT),
TRACE_EVENT_FL_TRACEPOINT = (1 << TRACE_EVENT_FL_TRACEPOINT_BIT),
TRACE_EVENT_FL_KPROBE = (1 << TRACE_EVENT_FL_KPROBE_BIT),
TRACE_EVENT_FL_UPROBE = (1 << TRACE_EVENT_FL_UPROBE_BIT),
ETT_SNAPSHOT = (1 << 1),
ETT_STACKTRACE = (1 << 2),
ETT_EVENT_ENABLE = (1 << 3),
+ ETT_EVENT_HIST = (1 << 4),
+ ETT_HIST_ENABLE = (1 << 5),
};
extern int filter_match_preds(struct event_filter *filter, void *rec);
-extern int filter_check_discard(struct trace_event_file *file, void *rec,
- struct ring_buffer *buffer,
- struct ring_buffer_event *event);
-extern int call_filter_check_discard(struct trace_event_call *call, void *rec,
- struct ring_buffer *buffer,
- struct ring_buffer_event *event);
extern enum event_trigger_type event_triggers_call(struct trace_event_file *file,
void *rec);
extern void event_triggers_post_call(struct trace_event_file *file,
return false;
}
-/*
- * Helper function for event_trigger_unlock_commit{_regs}().
- * If there are event triggers attached to this event that requires
- * filtering against its fields, then they wil be called as the
- * entry already holds the field information of the current event.
- *
- * It also checks if the event should be discarded or not.
- * It is to be discarded if the event is soft disabled and the
- * event was only recorded to process triggers, or if the event
- * filter is active and this event did not match the filters.
- *
- * Returns true if the event is discarded, false otherwise.
- */
-static inline bool
-__event_trigger_test_discard(struct trace_event_file *file,
- struct ring_buffer *buffer,
- struct ring_buffer_event *event,
- void *entry,
- enum event_trigger_type *tt)
-{
- unsigned long eflags = file->flags;
-
- if (eflags & EVENT_FILE_FL_TRIGGER_COND)
- *tt = event_triggers_call(file, entry);
-
- if (test_bit(EVENT_FILE_FL_SOFT_DISABLED_BIT, &file->flags))
- ring_buffer_discard_commit(buffer, event);
- else if (!filter_check_discard(file, entry, buffer, event))
- return false;
-
- return true;
-}
-
-/**
- * event_trigger_unlock_commit - handle triggers and finish event commit
- * @file: The file pointer assoctiated to the event
- * @buffer: The ring buffer that the event is being written to
- * @event: The event meta data in the ring buffer
- * @entry: The event itself
- * @irq_flags: The state of the interrupts at the start of the event
- * @pc: The state of the preempt count at the start of the event.
- *
- * This is a helper function to handle triggers that require data
- * from the event itself. It also tests the event against filters and
- * if the event is soft disabled and should be discarded.
- */
-static inline void
-event_trigger_unlock_commit(struct trace_event_file *file,
- struct ring_buffer *buffer,
- struct ring_buffer_event *event,
- void *entry, unsigned long irq_flags, int pc)
-{
- enum event_trigger_type tt = ETT_NONE;
-
- if (!__event_trigger_test_discard(file, buffer, event, entry, &tt))
- trace_buffer_unlock_commit(file->tr, buffer, event, irq_flags, pc);
-
- if (tt)
- event_triggers_post_call(file, tt, entry);
-}
-
-/**
- * event_trigger_unlock_commit_regs - handle triggers and finish event commit
- * @file: The file pointer assoctiated to the event
- * @buffer: The ring buffer that the event is being written to
- * @event: The event meta data in the ring buffer
- * @entry: The event itself
- * @irq_flags: The state of the interrupts at the start of the event
- * @pc: The state of the preempt count at the start of the event.
- *
- * This is a helper function to handle triggers that require data
- * from the event itself. It also tests the event against filters and
- * if the event is soft disabled and should be discarded.
- *
- * Same as event_trigger_unlock_commit() but calls
- * trace_buffer_unlock_commit_regs() instead of trace_buffer_unlock_commit().
- */
-static inline void
-event_trigger_unlock_commit_regs(struct trace_event_file *file,
- struct ring_buffer *buffer,
- struct ring_buffer_event *event,
- void *entry, unsigned long irq_flags, int pc,
- struct pt_regs *regs)
-{
- enum event_trigger_type tt = ETT_NONE;
-
- if (!__event_trigger_test_discard(file, buffer, event, entry, &tt))
- trace_buffer_unlock_commit_regs(file->tr, buffer, event,
- irq_flags, pc, regs);
-
- if (tt)
- event_triggers_post_call(file, tt, entry);
-}
-
#ifdef CONFIG_BPF_EVENTS
unsigned int trace_call_bpf(struct bpf_prog *prog, void *ctx);
#else
projects / cascardo / linux.git / blobdiff