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From: "Valdis Klētnieks" <valdis.kletnieks@vt.edu>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH] Include proper prototypes for kernel/elfcore.c
Date: Wed, 07 Aug 2019 20:38:25 -0400
Message-ID: <29875.1565224705@turing-police> (raw)

When building with W=1, gcc properly complains that there's no prototypes:

  CC      kernel/elfcore.o
kernel/elfcore.c:7:17: warning: no previous prototype for 'elf_core_extra_phdrs' [-Wmissing-prototypes]
    7 | Elf_Half __weak elf_core_extra_phdrs(void)
      |                 ^~~~~~~~~~~~~~~~~~~~
kernel/elfcore.c:12:12: warning: no previous prototype for 'elf_core_write_extra_phdrs' [-Wmissing-prototypes]
   12 | int __weak elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset)
      |            ^~~~~~~~~~~~~~~~~~~~~~~~~~
kernel/elfcore.c:17:12: warning: no previous prototype for 'elf_core_write_extra_data' [-Wmissing-prototypes]
   17 | int __weak elf_core_write_extra_data(struct coredump_params *cprm)
      |            ^~~~~~~~~~~~~~~~~~~~~~~~~
kernel/elfcore.c:22:15: warning: no previous prototype for 'elf_core_extra_data_size' [-Wmissing-prototypes]
   22 | size_t __weak elf_core_extra_data_size(void)
      |               ^~~~~~~~~~~~~~~~~~~~~~~~

Provide the include file so gcc is happy, and we don't have potential code drift

Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>

diff --git a/kernel/elfcore.c b/kernel/elfcore.c
index fc482c8e0bd8..57fb4dcff434 100644
--- a/kernel/elfcore.c
+++ b/kernel/elfcore.c
@@ -3,6 +3,7 @@
 #include <linux/fs.h>
 #include <linux/mm.h>
 #include <linux/binfmts.h>
+#include <linux/elfcore.h>
 
 Elf_Half __weak elf_core_extra_phdrs(void)
 {


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