Re: [PATCH v2 1/2] mm: mmap_lock: remove redundant "\n" in TP_printk

From: Vlastimil Babka
Date: Mon Oct 11 2021 - 03:54:33 EST


On 10/9/21 09:11, Gang Li wrote:
> Ftrace core will add "\n" automatically on print. "\n" in TP_printk
> will create blank line, so remove it.
>
> Signed-off-by: Gang Li <ligang.bdlg@xxxxxxxxxxxxx>

Acked-by: Vlastimil Babka <vbabka@xxxxxxx>

> ---
> include/trace/events/mmap_lock.h | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/include/trace/events/mmap_lock.h b/include/trace/events/mmap_lock.h
> index 0abff67b96f0..5f980c92e3e9 100644
> --- a/include/trace/events/mmap_lock.h
> +++ b/include/trace/events/mmap_lock.h
> @@ -32,7 +32,7 @@ TRACE_EVENT_FN(mmap_lock_start_locking,
> ),
>
> TP_printk(
> - "mm=%p memcg_path=%s write=%s\n",
> + "mm=%p memcg_path=%s write=%s",
> __entry->mm,
> __get_str(memcg_path),
> __entry->write ? "true" : "false"
> @@ -63,7 +63,7 @@ TRACE_EVENT_FN(mmap_lock_acquire_returned,
> ),
>
> TP_printk(
> - "mm=%p memcg_path=%s write=%s success=%s\n",
> + "mm=%p memcg_path=%s write=%s success=%s",
> __entry->mm,
> __get_str(memcg_path),
> __entry->write ? "true" : "false",
> @@ -92,7 +92,7 @@ TRACE_EVENT_FN(mmap_lock_released,
> ),
>
> TP_printk(
> - "mm=%p memcg_path=%s write=%s\n",
> + "mm=%p memcg_path=%s write=%s",
> __entry->mm,
> __get_str(memcg_path),
> __entry->write ? "true" : "false"
>