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authorJoe Perches <joe@perches.com>2015-06-26 01:01:00 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-06-26 03:00:37 +0300
commitf6d133f877c8bb0a0934dc8c521c758ee771e901 (patch)
treed15d402052e38d0fb1f47e8ef63bcedfb8c91aef /include/linux/compiler-gcc.h
parent2e13ba54a2682eea24918b87ad3edf70c2cf085b (diff)
downloadlinux-f6d133f877c8bb0a0934dc8c521c758ee771e901.tar.xz
compiler-gcc.h: neatening
- Move the inline and noinline blocks together - Comment neatening - Alignment of __attribute__ uses - Consistent naming of __must_be_array macro argument - Multiline macro neatening Signed-off-by: Joe Perches <joe@perches.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Michal Marek <mmarek@suse.cz> Cc: Segher Boessenkool <segher@kernel.crashing.org> Cc: Sasha Levin <levinsasha928@gmail.com> Cc: Anton Blanchard <anton@samba.org> Cc: Alan Modra <amodra@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/compiler-gcc.h')
-rw-r--r--include/linux/compiler-gcc.h85
1 files changed, 45 insertions, 40 deletions
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
index 371e560d13cf..5c2c14e3c647 100644
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -5,9 +5,9 @@
/*
* Common definitions for all gcc versions go here.
*/
-#define GCC_VERSION (__GNUC__ * 10000 \
- + __GNUC_MINOR__ * 100 \
- + __GNUC_PATCHLEVEL__)
+#define GCC_VERSION (__GNUC__ * 10000 \
+ + __GNUC_MINOR__ * 100 \
+ + __GNUC_PATCHLEVEL__)
/* Optimization barrier */
@@ -46,55 +46,63 @@
* the inline assembly constraint from =g to =r, in this particular
* case either is valid.
*/
-#define RELOC_HIDE(ptr, off) \
- ({ unsigned long __ptr; \
- __asm__ ("" : "=r"(__ptr) : "0"(ptr)); \
- (typeof(ptr)) (__ptr + (off)); })
+#define RELOC_HIDE(ptr, off) \
+({ \
+ unsigned long __ptr; \
+ __asm__ ("" : "=r"(__ptr) : "0"(ptr)); \
+ (typeof(ptr)) (__ptr + (off)); \
+})
/* Make the optimizer believe the variable can be manipulated arbitrarily. */
-#define OPTIMIZER_HIDE_VAR(var) __asm__ ("" : "=r" (var) : "0" (var))
+#define OPTIMIZER_HIDE_VAR(var) \
+ __asm__ ("" : "=r" (var) : "0" (var))
#ifdef __CHECKER__
-#define __must_be_array(arr) 0
+#define __must_be_array(a) 0
#else
/* &a[0] degrades to a pointer: a different type from an array */
-#define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0]))
+#define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0]))
#endif
/*
* Force always-inline if the user requests it so via the .config,
* or if gcc is too old:
*/
-#if !defined(CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING) || \
+#if !defined(CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING) || \
!defined(CONFIG_OPTIMIZE_INLINING) || (__GNUC__ < 4)
-# define inline inline __attribute__((always_inline)) notrace
-# define __inline__ __inline__ __attribute__((always_inline)) notrace
-# define __inline __inline __attribute__((always_inline)) notrace
+#define inline inline __attribute__((always_inline)) notrace
+#define __inline__ __inline__ __attribute__((always_inline)) notrace
+#define __inline __inline __attribute__((always_inline)) notrace
#else
/* A lot of inline functions can cause havoc with function tracing */
-# define inline inline notrace
-# define __inline__ __inline__ notrace
-# define __inline __inline notrace
+#define inline inline notrace
+#define __inline__ __inline__ notrace
+#define __inline __inline notrace
#endif
-#define __deprecated __attribute__((deprecated))
-#define __packed __attribute__((packed))
-#define __weak __attribute__((weak))
-#define __alias(symbol) __attribute__((alias(#symbol)))
+#define __always_inline inline __attribute__((always_inline))
+#define noinline __attribute__((noinline))
+
+#define __deprecated __attribute__((deprecated))
+#define __packed __attribute__((packed))
+#define __weak __attribute__((weak))
+#define __alias(symbol) __attribute__((alias(#symbol)))
/*
- * it doesn't make sense on ARM (currently the only user of __naked) to trace
- * naked functions 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.
+ * it doesn't make sense on ARM (currently the only user of __naked)
+ * to trace naked functions 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.
+ *
+ * The asm() bodies of naked functions often depend on standard calling
+ * conventions, therefore they must be noinline and noclone.
*
- * The asm() bodies of naked functions often depend on standard calling conventions,
- * therefore they must be noinline and noclone. GCC 4.[56] currently fail to enforce
- * this, so we must do so ourselves. See GCC PR44290.
+ * GCC 4.[56] currently fail to enforce this, so we must do so ourselves.
+ * See GCC PR44290.
*/
-#define __naked __attribute__((naked)) noinline __noclone notrace
+#define __naked __attribute__((naked)) noinline __noclone notrace
-#define __noreturn __attribute__((noreturn))
+#define __noreturn __attribute__((noreturn))
/*
* From the GCC manual:
@@ -106,14 +114,13 @@
* would be.
* [...]
*/
-#define __pure __attribute__((pure))
-#define __aligned(x) __attribute__((aligned(x)))
-#define __printf(a, b) __attribute__((format(printf, a, b)))
-#define __scanf(a, b) __attribute__((format(scanf, a, b)))
-#define noinline __attribute__((noinline))
-#define __attribute_const__ __attribute__((__const__))
-#define __maybe_unused __attribute__((unused))
-#define __always_unused __attribute__((unused))
+#define __pure __attribute__((pure))
+#define __aligned(x) __attribute__((aligned(x)))
+#define __printf(a, b) __attribute__((format(printf, a, b)))
+#define __scanf(a, b) __attribute__((format(scanf, a, b)))
+#define __attribute_const__ __attribute__((__const__))
+#define __maybe_unused __attribute__((unused))
+#define __always_unused __attribute__((unused))
#define __gcc_header(x) #x
#define _gcc_header(x) __gcc_header(linux/compiler-gcc##x.h)
@@ -129,5 +136,3 @@
* code
*/
#define uninitialized_var(x) x = x
-
-#define __always_inline inline __attribute__((always_inline))