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linux/drivers/base/regmap/internal.h
Christophe JAILLET 995cf0e014
 regmap: Reorder 'struct regmap' 
On a x86_64, with configured with allmodconfig, pahole states that the
regmap structure is:

	/* size: 1048, cachelines: 17, members: 78 */
	/* sum members: 1006, holes: 9, sum holes: 35 */
	/* padding: 7 */
	/* member types with holes: 2, total: 2 */
	/* last cacheline: 24 bytes */

So, when such a struct is allocated, 2048 bytes are allocated, with most of
this space being wasted.

Move a few bools so that the size is reduced to 1024.

After this change, pahole gives:

	/* size: 1024, cachelines: 16, members: 78 */
	/* sum members: 1006, holes: 6, sum holes: 18 */
	/* member types with holes: 2, total: 2 */

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://patch.msgid.link/f01f900d15633d5cda5f27763723acb307c0d22f.1737725820.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-02-03 00:38:32 +00:00

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