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Permit silencing of __deprecated warnings.

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The __deprecated marker is quite useful in highlighting the remnants of
old APIs that want removing.

However, it is quite normal for one or more years to pass, before the
(usually ancient, bitrotten) code in question is either updated or
deleted.

Thus, like __must_check, add a Kconfig option that permits the silencing
of this compiler warning.

This change mimics the ifdef-ery and Kconfig defaults of MUST_CHECK as
closely as possible.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeff Garzik 2007-10-25 04:06:13 -04:00 committed by Linus Torvalds
parent c67c36e4b8
commit de48844398
2 changed files with 14 additions and 0 deletions
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6
include/linux/compiler.h
View File

@ -101,6 +101,12 @@ extern void __chk_io_ptr(const volatile void __iomem *);
#undef __must_check #undef __must_check
#define __must_check #define __must_check
#endif #endif
#ifndef CONFIG_ENABLE_WARN_DEPRECATED
#undef __deprecated
#undef __deprecated_for_modules
#define __deprecated
#define __deprecated_for_modules
#endif
/* /*
* Allow us to avoid 'defined but not used' warnings on functions and data, * Allow us to avoid 'defined but not used' warnings on functions and data,

8
lib/Kconfig.debug
View File

@ -9,6 +9,14 @@ config PRINTK_TIME
operations. This is useful for identifying long delays operations. This is useful for identifying long delays
in kernel startup. in kernel startup.
config ENABLE_WARN_DEPRECATED
bool "Enable __deprecated logic"
default y
help
Enable the __deprecated logic in the kernel build.
Disable this to suppress the "warning: 'foo' is deprecated
(declared at kernel/power/somefile.c:1234)" messages.
config ENABLE_MUST_CHECK config ENABLE_MUST_CHECK
bool "Enable __must_check logic" bool "Enable __must_check logic"
default y default y