user/sven/linux.git/include/linux/compiler-gcc.h, branch v2.6.31.2

[ARM] 5421/1: ftrace: fix crash due to tracing of __naked functions

2009-03-12T21:33:03Z

This is a fix for the following crash observed in 2.6.29-rc3: http://lkml.org/lkml/2009/1/29/150 On ARM it doesn't make sense to trace a naked function because then mcount is called without stack and frame pointer being set up and there is no chance to restore the lr register to the value before mcount was called. Reported-by: Matthias Kaehlcke Tested-by: Matthias Kaehlcke Cc: Abhishek Sagar Cc: Steven Rostedt Cc: Ingo Molnar Signed-off-by: Uwe Kleine-König Signed-off-by: Russell King

compiler-gcc.h: add more comments to RELOC_HIDE

2009-01-10T00:54:41Z

Requested by C. Lameter Signed-off-by: Andi Kleen Cc: Christoph Lameter Cc: Andi Kleen Cc: Rusty Russell Cc: Stephen Rothwell Cc: Mike Travis Cc: Ingo Molnar Cc: Richard Henderson Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Sanitize gcc version header includes

2009-01-02T17:23:03Z

- include the gcc version-dependent header files from the generic gcc header file, rather than the other way around (iow: don't make the non-gcc header file have to know about gcc versions) - don't include compiler-gcc4.h for gcc 5 (for whenever it gets released). That's just confusing and made us do odd things in the gcc4 header file (testing that we really had version 4!) - generate the name from the __GNUC__ version directly, rather than having a mess of #if conditionals. Signed-off-by: Linus Torvalds

inlining: do not allow gcc below version 4 to optimize inlining

2008-04-30T15:42:49Z

fix the condition to match intention: always use the old inlining behavior on all gcc versions below 4. this should solve the UML build problem. Signed-off-by: Ingo Molnar Signed-off-by: Linus Torvalds

generic: make optimized inlining arch-opt-in

2008-04-26T15:44:55Z

Stephen Rothwell reported that linux-next did not build on powerpc64. make optimized inlining dependent on architecture opt-in. Reported-by: Stephen Rothwell Signed-off-by: Ingo Molnar

x86: add optimized inlining

2008-04-26T15:44:55Z

add CONFIG_OPTIMIZE_INLINING=y. allow gcc to optimize the kernel image's size by uninlining functions that have been marked 'inline'. Previously gcc was forced by Linux to always-inline these functions via a gcc attribute: #define inline inline __attribute__((always_inline)) Especially when the user has already selected CONFIG_OPTIMIZE_FOR_SIZE=y this can make a huge difference in kernel image size (using a standard Fedora .config): text data bss dec hex filename 5613924 562708 3854336 10030968 990f78 vmlinux.before 5486689 562708 3854336 9903733 971e75 vmlinux.after that's a 2.3% text size reduction (!). Signed-off-by: Ingo Molnar

Replace __attribute_pure with pure

2007-10-18T21:37:32Z

To be consistent with the use of attributes in the rest of the kernel replace all use of __attribute_pure__ with __pure and delete the definition of __attribute_pure__. Signed-off-by: Ralf Baechle Cc: Russell King Acked-by: Mauro Carvalho Chehab Cc: Bryan Wu Cc: Paul Mackerras Cc: Benjamin Herrenschmidt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Force erroneous inclusions of compiler-*.h files to be errors

2007-10-17T15:42:47Z

Replace worthless comments with actual preprocessor errors when including the wrong versions of the compiler.h files. [akpm@linux-foundation.org: make it work] Signed-off-by: Robert P. J. Day Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

compiler: introduce used and maybe_unused

2007-05-09T19:30:56Z

__used is defined to be __attribute__((unused)) for all pre-3.3 gcc compilers to suppress warnings for unused functions because perhaps they are referenced only in inline assembly. It is defined to be __attribute__((used)) for gcc 3.3 and later so that the code is still emitted for such functions. __maybe_unused is defined to be __attribute__((unused)) for both function and variable use if it could possibly be unreferenced due to the evaluation of preprocessor macros. Function prototypes shall be marked with __maybe_unused if the actual definition of the function is dependant on preprocessor macros. No update to compiler-intel.h is necessary because ICC supports both __attribute__((used)) and __attribute__((unused)) as specified by the gcc manual. __attribute_used__ is deprecated and will be removed once all current code is converted to using __used. Cc: Rusty Russell Cc: Adrian Bunk Signed-off-by: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ARRAY_SIZE: check for type

2007-05-07T19:13:00Z

We can use a gcc extension to ensure that ARRAY_SIZE() is handed an array, not a pointer. This is especially important when code is changed from a fixed array to a pointer. I assume the Intel compiler doesn't support __builtin_types_compatible_p. [jdike@addtoit.com: uml: update UML definition of ARRAY_SIZE] Signed-off-by: Rusty Russell Signed-off-by: Jeff Dike Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds