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tracing: Have syscall trace events use trace_event_buffer_lock_reserve()

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commit 3e2a56e6f6 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@goodmis.org

Cc: stable@vger.kernel.org
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Tom Zanussi <zanussi@kernel.org>
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Fixes: 0fc1b09ff1 ("tracing: Use temp buffer when filtering events")
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Steven Rostedt 2022-01-07 17:56:56 -05:00 committed by Greg Kroah-Hartman
parent 40022b3682
commit 74c0c6483b
1 changed files with 2 additions and 4 deletions
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6
kernel/trace/trace_syscalls.c
View file

@ -323,8 +323,7 @@ static void ftrace_syscall_enter(void *data, struct pt_regs *regs, long id)
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 *data, struct pt_regs *regs, long ret)
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)