| Age | Commit message (Collapse) | Author | Files | Lines | |
|---|---|---|---|---|---|
| 2021-11-09 | linux/container_of.h: switch to static_assert | Rasmus Villemoes | 1 | -6/+6 | |
| _Static_assert() is evaluated already in the compiler's frontend, and gives a somehat more to-the-point error, compared to the BUILD_BUG_ON macro, which only fires after the optimizer has had a chance to eliminate calls to functions marked with __attribute__((error)). In theory, this might make builds a tiny bit faster. There's also a little less gunk in the error message emitted: lib/sort.c: In function `foo': include/linux/build_bug.h:78:41: error: static assertion failed: "pointer type mismatch in container_of()" 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) compared to lib/sort.c: In function `foo': include/linux/compiler_types.h:322:38: error: call to `__compiletime_assert_2' declared with attribute error: pointer type mismatch in container_of() 322 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) While at it, fix the copy-pasto in container_of_safe(). Link: https://lkml.kernel.org/r/[email protected] Link: https://lore.kernel.org/lkml/[email protected]/T/ Signed-off-by: Rasmus Villemoes <[email protected]> Reviewed-by: Miguel Ojeda <[email protected]> Acked-by: Andy Shevchenko <[email protected]> Reviewed-by: Nick Desaulniers <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]> | |||||
| 2021-11-09 | kernel.h: split out container_of() and typeof_member() macros | Andy Shevchenko | 1 | -0/+40 | |
| kernel.h is being used as a dump for all kinds of stuff for a long time. Here is the attempt cleaning it up by splitting out container_of() and typeof_member() macros. For time being include new header back to kernel.h to avoid twisted indirected includes for existing users. Note, there are _a lot_ of headers and modules that include kernel.h solely for one of these macros and this allows to unburden compiler for the twisted inclusion paths and to make new code cleaner in the future. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Andy Shevchenko <[email protected]> Cc: Boqun Feng <[email protected]> Cc: Brendan Higgins <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jonathan Cameron <[email protected]> Cc: Laurent Pinchart <[email protected]> Cc: Mauro Carvalho Chehab <[email protected]> Cc: Miguel Ojeda <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Rasmus Villemoes <[email protected]> Cc: Sakari Ailus <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Thorsten Leemhuis <[email protected]> Cc: Waiman Long <[email protected]> Cc: Will Deacon <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]> | |||||