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tracing: Move tracing_set_filter_buffering() into trace_events_hist.c 

The function tracing_set_filter_buffering() is only used in
trace_events_hist.c. Move it to that file and make it static.

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://patch.msgid.link/20260206195936.617080218@kernel.org
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
master
Steven Rostedt 2026-02-06 14:37:52 -05:00 committed by Steven Rostedt (Google)
parent c8b039c3e3
commit 326669faf3
3 changed files with 20 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
kernel/trace/trace.c
View File

@ -7891,26 +7891,6 @@ u64 tracing_event_time_stamp(struct trace_buffer *buffer, struct ring_buffer_eve
return ring_buffer_event_time_stamp(buffer, rbe);
}
/*
* Set or disable using the per CPU trace_buffer_event when possible.
*/
int tracing_set_filter_buffering(struct trace_array *tr, bool set)
{
guard(mutex)(&trace_types_lock);
if (set && tr->no_filter_buffering_ref++)
return 0;
if (!set) {
if (WARN_ON_ONCE(!tr->no_filter_buffering_ref))
return -EINVAL;
--tr->no_filter_buffering_ref;
}
return 0;
}
struct ftrace_buffer_info {
struct trace_iterator iter;
void *spare;

1
kernel/trace/trace.h
View File

@ -476,7 +476,6 @@ extern struct trace_array *trace_array_find(const char *instance);
extern struct trace_array *trace_array_find_get(const char *instance);
extern u64 tracing_event_time_stamp(struct trace_buffer *buffer, struct ring_buffer_event *rbe);
extern int tracing_set_filter_buffering(struct trace_array *tr, bool set);
extern int tracing_set_clock(struct trace_array *tr, const char *clockstr);
extern bool trace_clock_in_ns(struct trace_array *tr);

20
kernel/trace/trace_events_hist.c
View File

@ -6531,6 +6531,26 @@ static bool existing_hist_update_only(char *glob,
return updated;
}
/*
* Set or disable using the per CPU trace_buffer_event when possible.
*/
static int tracing_set_filter_buffering(struct trace_array *tr, bool set)
{
guard(mutex)(&trace_types_lock);
if (set && tr->no_filter_buffering_ref++)
return 0;
if (!set) {
if (WARN_ON_ONCE(!tr->no_filter_buffering_ref))
return -EINVAL;
--tr->no_filter_buffering_ref;
}
return 0;
}
static int hist_register_trigger(char *glob,
struct event_trigger_data *data,
struct trace_event_file *file)