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authorMasahiro Yamada <yamada.masahiro@socionext.com>2015-07-25 21:52:37 +0900
committerSimon Glass <sjg@chromium.org>2015-08-06 07:44:29 -0600
commite2282d70763ddf06f9b02007445729c841ef4083 (patch)
tree8e0461a2455375eed3b66e1fc322fe265ce1e171 /drivers/core/Kconfig
parent2b07f6859ad17b74ce490f371f4878add6ae5a11 (diff)
devres: make Devres optional with CONFIG_DEVRES
Currently, Devres requires additional 16 byte for each allocation, which is not so insignificant in some cases. Add CONFIG_DEVRES to make this framework optional. If the option is disabled, devres functions fall back to non-managed variants. For example, devres_alloc() to kzalloc(), devm_kmalloc() to kmalloc(), etc. Because devres_head is also surrounded by an ifdef conditional, there is no memory overhead when CONFIG_DEVRES is disabled. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Suggested-by: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/core/Kconfig')
-rw-r--r--drivers/core/Kconfig15
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/core/Kconfig b/drivers/core/Kconfig
index a002d69d79..8ae0072aa9 100644
--- a/drivers/core/Kconfig
+++ b/drivers/core/Kconfig
@@ -79,9 +79,22 @@ config SYSCON
by this uclass, including accessing registers via regmap and
assigning a unique number to each.
+config DEVRES
+ bool "Managed device resources"
+ depends on DM
+ help
+ This option enables the Managed device resources core support.
+ Device resources managed by the devres framework are automatically
+ released whether initialization fails half-way or the device gets
+ detached.
+
+ If this option is disabled, devres functions fall back to
+ non-managed variants. For example, devres_alloc() to kzalloc(),
+ devm_kmalloc() to kmalloc(), etc.
+
config DEBUG_DEVRES
bool "Managed device resources verbose debug messages"
- depends on DM
+ depends on DEVRES
help
If this option is enabled, devres debug messages are printed.
Select this if you are having a problem with devres or want to