[PATCH] ASoC: rsnd: core: make some arrays static const, makes object smaller

[PATCH] ASoC: rsnd: core: make some arrays static const, makes object smaller

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Don't populate arrays on the stack but instead them static const.
Makes the object code smaller by 48 bytes.

Before:
   text    data     bss     dec     hex filename
  20938     916     104   21958    55c6 ./sound/soc/sh/rcar/core.o

After:
   text    data     bss     dec     hex filename
  20890     916     104   21910    5596 ./sound/soc/sh/rcar/core.o

gcc version 11.1.0)

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/sh/rcar/core.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 5e382b5c9d45..978bd0406729 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -426,19 +426,19 @@ u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
 
 u32 rsnd_get_busif_shift(struct rsnd_dai_stream *io, struct rsnd_mod *mod)
 {
-	enum rsnd_mod_type playback_mods[] = {
+	static const enum rsnd_mod_type playback_mods[] = {
 		RSND_MOD_SRC,
 		RSND_MOD_CMD,
 		RSND_MOD_SSIU,
 	};
-	enum rsnd_mod_type capture_mods[] = {
+	static const enum rsnd_mod_type capture_mods[] = {
 		RSND_MOD_CMD,
 		RSND_MOD_SRC,
 		RSND_MOD_SSIU,
 	};
 	struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 	struct rsnd_mod *tmod = NULL;
-	enum rsnd_mod_type *mods =
+	const enum rsnd_mod_type *mods =
 		rsnd_io_is_play(io) ?
 		playback_mods : capture_mods;
 	int i;
-- 
2.25.1

Re: [PATCH] ASoC: rsnd: core: make some arrays static const, makes object smaller

[Mark Brown]

On 20 Aug 2021 13:09:14 +0900, Kuninori Morimoto wrote:
> From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> 
> Don't populate arrays on the stack but instead them static const.
> Makes the object code smaller by 48 bytes.
> 
> Before:
>    text    data     bss     dec     hex filename
>   20938     916     104   21958    55c6 ./sound/soc/sh/rcar/core.o
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/1] ASoC: rsnd: core: make some arrays static const, makes object smaller
      commit: 28889de643cd14617e28f862e6763754ad28f7c4

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark