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tracing: Pass the ftrace_file to the buffer lock reserve code

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Pass the struct ftrace_event_file *ftrace_file to the
trace_event_buffer_lock_reserve() (new function that replaces the
trace_current_buffer_lock_reserver()).

The ftrace_file holds a pointer to the trace_array that is in use.
In the case of multiple buffers with different trace_arrays, this
allows different events to be recorded into different buffers.

Also fixed some of the stale comments in include/trace/ftrace.h

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt 2012-08-02 10:32:10 -04:00 • committed by Steven Rostedt
parent 2b6080f28c
commit ccb469a198
3 changed files with 24 additions and 4 deletions
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7
include/linux/ftrace_event.h
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@ -128,6 +128,13 @@ enum print_line_t {
void tracing_generic_entry_update(struct trace_entry *entry,
unsigned long flags,
int pc);
struct ftrace_event_file;
struct ring_buffer_event *
trace_event_buffer_lock_reserve(struct ring_buffer **current_buffer,
struct ftrace_event_file *ftrace_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,