[PATCH 5.16 0854/1039] tracing: Have syscall trace events use trace_event_buffer_lock_reserve()

[Greg Kroah-Hartman]

From: Steven Rostedt <rostedt@xxxxxxxxxxx>

commit 3e2a56e6f639492311e0a8533f0a7aed60816308 upstream.

Currently, the syscall trace events call trace_buffer_lock_reserve()
directly, which means that it misses out on some of the filtering
optimizations provided by the helper function
trace_event_buffer_lock_reserve(). Have the syscall trace events call that
instead, as it was missed when adding the update to use the temp buffer
when filtering.

Link: https://lkml.kernel.org/r/20220107225839.823118570@xxxxxxxxxxx

Cc: stable@xxxxxxxxxxxxxxx
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Tom Zanussi <zanussi@xxxxxxxxxx>
Reviewed-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Fixes: 0fc1b09ff1ff4 ("tracing: Use temp buffer when filtering events")
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 kernel/trace/trace_syscalls.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

--- a/kernel/trace/trace_syscalls.c
+++ b/kernel/trace/trace_syscalls.c
@@ -323,8 +323,7 @@ static void ftrace_syscall_enter(void *d
 
 	trace_ctx = tracing_gen_ctx();
 
-	buffer = tr->array_buffer.buffer;
-	event = trace_buffer_lock_reserve(buffer,
+	event = trace_event_buffer_lock_reserve(&buffer, trace_file,
 			sys_data->enter_event->event.type, size, trace_ctx);
 	if (!event)
 		return;
@@ -367,8 +366,7 @@ static void ftrace_syscall_exit(void *da
 
 	trace_ctx = tracing_gen_ctx();
 
-	buffer = tr->array_buffer.buffer;
-	event = trace_buffer_lock_reserve(buffer,
+	event = trace_event_buffer_lock_reserve(&buffer, trace_file,
 			sys_data->exit_event->event.type, sizeof(*entry),
 			trace_ctx);
 	if (!event)