Re: [PATCH] ACPI: Optimize Namespace List Sorting in nsrepair2.c

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On Wed, Jun 26, 2024 at 3:51 PM Prabhakar Pujeri
<prabhakar.pujeri@xxxxxxxxx> wrote:
>
> This patch optimizes the namespace list sorting in acpi_ns_sort_list by
> replacing the direct element swap with the swap() helper function. This
> approach maintains functionality while improving code clarity and
> potentially enhancing performance.
>
> this patch generated using coccinelle.
>
>
> Signed-off-by: Prabhakar Pujeri <prabhakar.pujeri@xxxxxxxxx>
> ---
>  drivers/acpi/acpica/nsrepair2.c | 8 ++------

ACPICA code changes need to be submitted to the upstream ACPICA
project on GitHub.  Once accepted there, a Linux patch can be
submitted with a Link: tag pointing to the corresponding upstream
ACPICA commit.

>  1 file changed, 2 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/acpi/acpica/nsrepair2.c b/drivers/acpi/acpica/nsrepair2.c
> index 1bb7b71f07f1..5d56b2fd9151 100644
> --- a/drivers/acpi/acpica/nsrepair2.c
> +++ b/drivers/acpi/acpica/nsrepair2.c
> @@ -875,7 +875,6 @@ acpi_ns_sort_list(union acpi_operand_object **elements,
>  {
>         union acpi_operand_object *obj_desc1;
>         union acpi_operand_object *obj_desc2;
> -       union acpi_operand_object *temp_obj;
>         u32 i;
>         u32 j;
>
> @@ -891,11 +890,8 @@ acpi_ns_sort_list(union acpi_operand_object **elements,
>                               obj_desc2->integer.value))
>                             || ((sort_direction == ACPI_SORT_DESCENDING)
>                                 && (obj_desc1->integer.value <
> -                                   obj_desc2->integer.value))) {
> -                               temp_obj = elements[j - 1];
> -                               elements[j - 1] = elements[j];
> -                               elements[j] = temp_obj;
> -                       }
> +                                   obj_desc2->integer.value)))
> +                               swap(elements[j - 1], elements[j]);
>                 }
>         }
>  }
> --
> 2.45.2
>
>





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