Re: [PATCH 15/16] include/linux/compiler.h: remove unused KENTRY macro
From: Sedat Dilek <hidden>
Date: 2019-08-19 18:04:15
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On Mon, Aug 12, 2019 at 11:53 PM Nick Desaulniers [off-list ref] wrote:
This macro is not used throughout the kernel. Delete it rather than update the __section to be a fully spelled out __attribute__((__section__())) to avoid https://bugs.llvm.org/show_bug.cgi?id=42950. Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Sedat Dilek <redacted> [ Linux v5.3-rc5 ] Patchset "for-5.3/x86-section-name-escaping" (5 patches): compiler_attributes.h: add note about __section include/linux/compiler.h: remove unused KENTRY macro include/linux: prefer __section from compiler_attributes.h include/asm-generic: prefer __section from compiler_attributes.h x86: prefer __section from compiler_attributes.h Thanks. - Sedat -
quoted hunk ↗ jump to hunk
--- include/linux/compiler.h | 23 ----------------------- 1 file changed, 23 deletions(-)diff --git a/include/linux/compiler.h b/include/linux/compiler.h index 5e88e7e33abe..f01c1e527f85 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h@@ -136,29 +136,6 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val, } while (0) #endif -/* - * KENTRY - kernel entry point - * This can be used to annotate symbols (functions or data) that are used - * without their linker symbol being referenced explicitly. For example, - * interrupt vector handlers, or functions in the kernel image that are found - * programatically. - * - * Not required for symbols exported with EXPORT_SYMBOL, or initcalls. Those - * are handled in their own way (with KEEP() in linker scripts). - * - * KENTRY can be avoided if the symbols in question are marked as KEEP() in the - * linker script. For example an architecture could KEEP() its entire - * boot/exception vector code rather than annotate each function and data. - */ -#ifndef KENTRY -# define KENTRY(sym) \ - extern typeof(sym) sym; \ - static const unsigned long __kentry_##sym \ - __used \ - __section("___kentry" "+" #sym ) \ - = (unsigned long)&sym; -#endif - #ifndef RELOC_HIDE # define RELOC_HIDE(ptr, off) \ ({ unsigned long __ptr; \ --2.23.0.rc1.153.gdeed80330f-goog