* [PATCH] dmaengine: sh: make array descs static
@ 2021-09-15 11:19 Colin King
2021-09-15 11:20 ` Colin Ian King
0 siblings, 1 reply; 2+ messages in thread
From: Colin King @ 2021-09-15 11:19 UTC (permalink / raw)
To: Vinod Koul, dmaengine; +Cc: kernel-janitors, linux-kernel
From: Colin Ian King <colin.king@canonical.com>
Don't populate the read-only array ds_lut on the stack but instead it
static. Also makes the object code smaller by 163 bytes:
Before:
text data bss dec hex filename
23508 4796 0 28304 6e90 ./drivers/dma/sh/rz-dmac.o
After:
text data bss dec hex filename
23281 4860 0 28141 6ded ./drivers/dma/sh/rz-dmac.o
(gcc version 11.2.0)
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
drivers/dma/sh/rz-dmac.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/dma/sh/rz-dmac.c b/drivers/dma/sh/rz-dmac.c
index f9f30cbeccbe..005f1a3ff634 100644
--- a/drivers/dma/sh/rz-dmac.c
+++ b/drivers/dma/sh/rz-dmac.c
@@ -573,7 +573,7 @@ static void rz_dmac_issue_pending(struct dma_chan *chan)
static u8 rz_dmac_ds_to_val_mapping(enum dma_slave_buswidth ds)
{
u8 i;
- const enum dma_slave_buswidth ds_lut[] = {
+ static const enum dma_slave_buswidth ds_lut[] = {
DMA_SLAVE_BUSWIDTH_1_BYTE,
DMA_SLAVE_BUSWIDTH_2_BYTES,
DMA_SLAVE_BUSWIDTH_4_BYTES,
--
2.32.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] dmaengine: sh: make array descs static
2021-09-15 11:19 [PATCH] dmaengine: sh: make array descs static Colin King
@ 2021-09-15 11:20 ` Colin Ian King
0 siblings, 0 replies; 2+ messages in thread
From: Colin Ian King @ 2021-09-15 11:20 UTC (permalink / raw)
To: Vinod Koul, dmaengine; +Cc: kernel-janitors, linux-kernel
Incorrect $SUBJECT, V2 sent
On 15/09/2021 12:19, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
>
> Don't populate the read-only array ds_lut on the stack but instead it
> static. Also makes the object code smaller by 163 bytes:
>
> Before:
> text data bss dec hex filename
> 23508 4796 0 28304 6e90 ./drivers/dma/sh/rz-dmac.o
>
> After:
> text data bss dec hex filename
> 23281 4860 0 28141 6ded ./drivers/dma/sh/rz-dmac.o
>
> (gcc version 11.2.0)
>
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
> drivers/dma/sh/rz-dmac.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/dma/sh/rz-dmac.c b/drivers/dma/sh/rz-dmac.c
> index f9f30cbeccbe..005f1a3ff634 100644
> --- a/drivers/dma/sh/rz-dmac.c
> +++ b/drivers/dma/sh/rz-dmac.c
> @@ -573,7 +573,7 @@ static void rz_dmac_issue_pending(struct dma_chan *chan)
> static u8 rz_dmac_ds_to_val_mapping(enum dma_slave_buswidth ds)
> {
> u8 i;
> - const enum dma_slave_buswidth ds_lut[] = {
> + static const enum dma_slave_buswidth ds_lut[] = {
> DMA_SLAVE_BUSWIDTH_1_BYTE,
> DMA_SLAVE_BUSWIDTH_2_BYTES,
> DMA_SLAVE_BUSWIDTH_4_BYTES,
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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2021-09-15 11:19 [PATCH] dmaengine: sh: make array descs static Colin King
2021-09-15 11:20 ` Colin Ian King
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