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| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2023-02-14 11:40:14 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-02-14 16:25:22 +0300 |
| commit | 7464145862d606cf9835f24080341a397cbc0669 (patch) | |
| tree | 91f864d2443d3446d2a2c8e79f3d8e090b0012e8 /include/linux/regmap.h | |
| parent | 7b3c4c370c09313e22b555e79167e73d233611d1 (diff) | |
| download | linux-7464145862d606cf9835f24080341a397cbc0669.tar.xz | |
regmap: Reorder fields in 'struct regmap_bus' to save some memory
Group some bool variables to reduce hole and avoid padding.
On x86_64, this shrinks the size from 136 to 128 bytes.
As an example:
$ size drivers/base/regmap/regmap-fsi.o (Before)
text data bss dec hex filename
4837 136 0 4973 136d drivers/base/regmap/regmap-fsi.o
$ size drivers/base/regmap/regmap-fsi.o (After)
text data bss dec hex filename
4701 136 0 4837 12e5 drivers/base/regmap/regmap-fsi.o
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/077ca39622c8870a3ea932298a9cec34f7a8295a.1676363976.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/linux/regmap.h')
| -rw-r--r-- | include/linux/regmap.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 029b9e09d3ca..f26432dc02ef 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -520,6 +520,7 @@ typedef void (*regmap_hw_free_context)(void *context); * to perform locking. This field is ignored if custom lock/unlock * functions are used (see fields lock/unlock of * struct regmap_config). + * @free_on_exit: kfree this on exit of regmap * @write: Write operation. * @gather_write: Write operation with split register/value, return -ENOTSUPP * if not implemented on a given device. @@ -548,10 +549,10 @@ typedef void (*regmap_hw_free_context)(void *context); * DEFAULT, BIG is assumed. * @max_raw_read: Max raw read size that can be used on the bus. * @max_raw_write: Max raw write size that can be used on the bus. - * @free_on_exit: kfree this on exit of regmap */ struct regmap_bus { bool fast_io; + bool free_on_exit; regmap_hw_write write; regmap_hw_gather_write gather_write; regmap_hw_async_write async_write; @@ -568,7 +569,6 @@ struct regmap_bus { enum regmap_endian val_format_endian_default; size_t max_raw_read; size_t max_raw_write; - bool free_on_exit; }; /* |