diff options
| -rw-r--r-- | Kconfig | 9 | ||||
| -rw-r--r-- | include/linux/compiler_types.h | 11 |
2 files changed, 19 insertions, 1 deletions
@@ -64,6 +64,15 @@ config CC_OPTIMIZE_FOR_SIZE This option is enabled by default for U-Boot. +config OPTIMIZE_INLINING + bool "Allow compiler to uninline functions marked 'inline'" + default n + help + This option determines if U-Boot forces gcc to inline the functions + developers have marked 'inline'. Doing so takes away freedom from gcc to + do what it thinks is best, which is desirable in some cases for size + reasons. + config CC_COVERAGE bool "Enable code coverage analysis" depends on SANDBOX diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h index e970f97..72393a8 100644 --- a/include/linux/compiler_types.h +++ b/include/linux/compiler_types.h @@ -129,13 +129,22 @@ struct ftrace_likely_data { #define __compiler_offsetof(a, b) __builtin_offsetof(a, b) /* + * Force always-inline if the user requests it so via the .config. * Prefer gnu_inline, so that extern inline functions do not emit an * externally visible function. This makes extern inline behave as per gnu89 * semantics rather than c99. This prevents multiple symbol definition errors * of extern inline functions at link time. * A lot of inline functions can cause havoc with function tracing. + * Do not use __always_inline here, since currently it expands to inline again + * (which would break users of __always_inline). */ -#define inline inline __gnu_inline __inline_maybe_unused notrace +#if !defined(CONFIG_OPTIMIZE_INLINING) +#define inline inline __attribute__((__always_inline__)) __gnu_inline \ + __inline_maybe_unused notrace +#else +#define inline inline __gnu_inline \ + __inline_maybe_unused notrace +#endif /* * gcc provides both __inline__ and __inline as alternate spellings of |