* [PATCH] mmc: dw_mmc: make const arrays mszs static
@ 2017-09-03 13:39 ` Colin King
0 siblings, 0 replies; 4+ messages in thread
From: Colin King @ 2017-09-03 13:39 UTC (permalink / raw)
To: Jaehoon Chung, Ulf Hansson, linux-mmc; +Cc: kernel-janitors, linux-kernel
From: Colin Ian King <colin.king@canonical.com>
Don't populate the const arrays mszs on the stack, instead make them
static. Makes the object code smaller by over 310 bytes:
Before:
text data bss dec hex filename
47527 8528 320 56375 dc37 drivers/mmc/host/dw_mmc.o
After:
text data bss dec hex filename
47055 8688 320 56063 daff drivers/mmc/host/dw_mmc.o
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
drivers/mmc/host/dw_mmc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 860313bd952a..45289c5e0295 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -796,7 +796,7 @@ static int dw_mci_edmac_start_dma(struct dw_mci *host,
struct dma_slave_config cfg;
struct dma_async_tx_descriptor *desc = NULL;
struct scatterlist *sgl = host->data->sg;
- const u32 mszs[] = {1, 4, 8, 16, 32, 64, 128, 256};
+ static const u32 mszs[] = {1, 4, 8, 16, 32, 64, 128, 256};
u32 sg_elems = host->data->sg_len;
u32 fifoth_val;
u32 fifo_offset = host->fifo_reg - host->regs;
@@ -1003,7 +1003,7 @@ static int dw_mci_get_cd(struct mmc_host *mmc)
static void dw_mci_adjust_fifoth(struct dw_mci *host, struct mmc_data *data)
{
unsigned int blksz = data->blksz;
- const u32 mszs[] = {1, 4, 8, 16, 32, 64, 128, 256};
+ static const u32 mszs[] = {1, 4, 8, 16, 32, 64, 128, 256};
u32 fifo_width = 1 << host->data_shift;
u32 blksz_depth = blksz / fifo_width, fifoth_val;
u32 msize = 0, rx_wmark = 1, tx_wmark, tx_wmark_invers;
--
2.14.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH] mmc: dw_mmc: make const arrays mszs static
@ 2017-09-03 13:39 ` Colin King
0 siblings, 0 replies; 4+ messages in thread
From: Colin King @ 2017-09-03 13:39 UTC (permalink / raw)
To: Jaehoon Chung, Ulf Hansson, linux-mmc; +Cc: kernel-janitors, linux-kernel
From: Colin Ian King <colin.king@canonical.com>
Don't populate the const arrays mszs on the stack, instead make them
static. Makes the object code smaller by over 310 bytes:
Before:
text data bss dec hex filename
47527 8528 320 56375 dc37 drivers/mmc/host/dw_mmc.o
After:
text data bss dec hex filename
47055 8688 320 56063 daff drivers/mmc/host/dw_mmc.o
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
drivers/mmc/host/dw_mmc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 860313bd952a..45289c5e0295 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -796,7 +796,7 @@ static int dw_mci_edmac_start_dma(struct dw_mci *host,
struct dma_slave_config cfg;
struct dma_async_tx_descriptor *desc = NULL;
struct scatterlist *sgl = host->data->sg;
- const u32 mszs[] = {1, 4, 8, 16, 32, 64, 128, 256};
+ static const u32 mszs[] = {1, 4, 8, 16, 32, 64, 128, 256};
u32 sg_elems = host->data->sg_len;
u32 fifoth_val;
u32 fifo_offset = host->fifo_reg - host->regs;
@@ -1003,7 +1003,7 @@ static int dw_mci_get_cd(struct mmc_host *mmc)
static void dw_mci_adjust_fifoth(struct dw_mci *host, struct mmc_data *data)
{
unsigned int blksz = data->blksz;
- const u32 mszs[] = {1, 4, 8, 16, 32, 64, 128, 256};
+ static const u32 mszs[] = {1, 4, 8, 16, 32, 64, 128, 256};
u32 fifo_width = 1 << host->data_shift;
u32 blksz_depth = blksz / fifo_width, fifoth_val;
u32 msize = 0, rx_wmark = 1, tx_wmark, tx_wmark_invers;
--
2.14.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] mmc: dw_mmc: make const arrays mszs static
2017-09-03 13:39 ` Colin King
@ 2017-10-02 8:30 ` Ulf Hansson
-1 siblings, 0 replies; 4+ messages in thread
From: Ulf Hansson @ 2017-10-02 8:30 UTC (permalink / raw)
To: Colin King; +Cc: Jaehoon Chung, linux-mmc, kernel-janitors, linux-kernel
On 3 September 2017 at 15:39, Colin King <colin.king@canonical.com> wrote:
> From: Colin Ian King <colin.king@canonical.com>
>
> Don't populate the const arrays mszs on the stack, instead make them
> static. Makes the object code smaller by over 310 bytes:
>
> Before:
> text data bss dec hex filename
> 47527 8528 320 56375 dc37 drivers/mmc/host/dw_mmc.o
>
> After:
> text data bss dec hex filename
> 47055 8688 320 56063 daff drivers/mmc/host/dw_mmc.o
>
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
Thanks, applied for next!
Kind regards
Uffe
> ---
> drivers/mmc/host/dw_mmc.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
> index 860313bd952a..45289c5e0295 100644
> --- a/drivers/mmc/host/dw_mmc.c
> +++ b/drivers/mmc/host/dw_mmc.c
> @@ -796,7 +796,7 @@ static int dw_mci_edmac_start_dma(struct dw_mci *host,
> struct dma_slave_config cfg;
> struct dma_async_tx_descriptor *desc = NULL;
> struct scatterlist *sgl = host->data->sg;
> - const u32 mszs[] = {1, 4, 8, 16, 32, 64, 128, 256};
> + static const u32 mszs[] = {1, 4, 8, 16, 32, 64, 128, 256};
> u32 sg_elems = host->data->sg_len;
> u32 fifoth_val;
> u32 fifo_offset = host->fifo_reg - host->regs;
> @@ -1003,7 +1003,7 @@ static int dw_mci_get_cd(struct mmc_host *mmc)
> static void dw_mci_adjust_fifoth(struct dw_mci *host, struct mmc_data *data)
> {
> unsigned int blksz = data->blksz;
> - const u32 mszs[] = {1, 4, 8, 16, 32, 64, 128, 256};
> + static const u32 mszs[] = {1, 4, 8, 16, 32, 64, 128, 256};
> u32 fifo_width = 1 << host->data_shift;
> u32 blksz_depth = blksz / fifo_width, fifoth_val;
> u32 msize = 0, rx_wmark = 1, tx_wmark, tx_wmark_invers;
> --
> 2.14.1
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] mmc: dw_mmc: make const arrays mszs static
@ 2017-10-02 8:30 ` Ulf Hansson
0 siblings, 0 replies; 4+ messages in thread
From: Ulf Hansson @ 2017-10-02 8:30 UTC (permalink / raw)
To: Colin King; +Cc: Jaehoon Chung, linux-mmc, kernel-janitors, linux-kernel
On 3 September 2017 at 15:39, Colin King <colin.king@canonical.com> wrote:
> From: Colin Ian King <colin.king@canonical.com>
>
> Don't populate the const arrays mszs on the stack, instead make them
> static. Makes the object code smaller by over 310 bytes:
>
> Before:
> text data bss dec hex filename
> 47527 8528 320 56375 dc37 drivers/mmc/host/dw_mmc.o
>
> After:
> text data bss dec hex filename
> 47055 8688 320 56063 daff drivers/mmc/host/dw_mmc.o
>
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
Thanks, applied for next!
Kind regards
Uffe
> ---
> drivers/mmc/host/dw_mmc.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
> index 860313bd952a..45289c5e0295 100644
> --- a/drivers/mmc/host/dw_mmc.c
> +++ b/drivers/mmc/host/dw_mmc.c
> @@ -796,7 +796,7 @@ static int dw_mci_edmac_start_dma(struct dw_mci *host,
> struct dma_slave_config cfg;
> struct dma_async_tx_descriptor *desc = NULL;
> struct scatterlist *sgl = host->data->sg;
> - const u32 mszs[] = {1, 4, 8, 16, 32, 64, 128, 256};
> + static const u32 mszs[] = {1, 4, 8, 16, 32, 64, 128, 256};
> u32 sg_elems = host->data->sg_len;
> u32 fifoth_val;
> u32 fifo_offset = host->fifo_reg - host->regs;
> @@ -1003,7 +1003,7 @@ static int dw_mci_get_cd(struct mmc_host *mmc)
> static void dw_mci_adjust_fifoth(struct dw_mci *host, struct mmc_data *data)
> {
> unsigned int blksz = data->blksz;
> - const u32 mszs[] = {1, 4, 8, 16, 32, 64, 128, 256};
> + static const u32 mszs[] = {1, 4, 8, 16, 32, 64, 128, 256};
> u32 fifo_width = 1 << host->data_shift;
> u32 blksz_depth = blksz / fifo_width, fifoth_val;
> u32 msize = 0, rx_wmark = 1, tx_wmark, tx_wmark_invers;
> --
> 2.14.1
>
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2017-10-02 8:30 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2017-09-03 13:39 [PATCH] mmc: dw_mmc: make const arrays mszs static Colin King
2017-09-03 13:39 ` Colin King
2017-10-02 8:30 ` Ulf Hansson
2017-10-02 8:30 ` Ulf Hansson
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