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Message-Id: <1444278242-27382-1-git-send-email-yalin.wang2010@gmail.com> Date: Thu, 8 Oct 2015 12:24:02 +0800 From: yalin wang <yalin.wang2010@...il.com> To: broonie@...nel.org, gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org Cc: yalin wang <yalin.wang2010@...il.com> Subject: [RFC] regmap: change bool to 1 bit variable in struct regmap This patch change some bool variables in struct regmap { } to be u8 v : 1 type, so that we can shrink the sizeof of struct regmap. Signed-off-by: yalin wang <yalin.wang2010@...il.com> --- drivers/base/regmap/internal.h | 21 ++++++++++----------- 1 file changed, 10 insertions(+), 11 deletions(-) diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h index 873ddf9..f4a5f7b 100644 --- a/drivers/base/regmap/internal.h +++ b/drivers/base/regmap/internal.h @@ -67,7 +67,6 @@ struct regmap { void *bus_context; const char *name; - bool async; spinlock_t async_lock; wait_queue_head_t async_waitq; struct list_head async_list; @@ -99,7 +98,16 @@ struct regmap { int (*reg_read)(void *context, unsigned int reg, unsigned int *val); int (*reg_write)(void *context, unsigned int reg, unsigned int val); - bool defer_caching; + u8 async : 1, + defer_caching : 1, + /* if set, remember to free reg_defaults_raw */ + cache_free : 1, + /* if set, the HW registers are known to match map->reg_defaults */ + no_sync_defaults : 1, + /* if set, converts bulk rw to single rw */ + use_single_rw : 1, + /* if set, the device supports multi write mode */ + can_multi_write : 1; u8 read_flag_mask; u8 write_flag_mask; @@ -125,25 +133,16 @@ struct regmap { u32 cache_only; /* if set, only the HW is modified not the cache */ u32 cache_bypass; - /* if set, remember to free reg_defaults_raw */ - bool cache_free; struct reg_default *reg_defaults; const void *reg_defaults_raw; void *cache; /* if set, the cache contains newer data than the HW */ u32 cache_dirty; - /* if set, the HW registers are known to match map->reg_defaults */ - bool no_sync_defaults; struct reg_sequence *patch; int patch_regs; - /* if set, converts bulk rw to single rw */ - bool use_single_rw; - /* if set, the device supports multi write mode */ - bool can_multi_write; - struct rb_root range_tree; void *selector_work_buf; /* Scratch buffer used for selector */ }; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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