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| author | Sam Ravnborg <sam@mars.ravnborg.org> | 2006-02-17 22:42:02 +0100 |
|---|---|---|
| committer | Sam Ravnborg <sam@mars.ravnborg.org> | 2006-02-19 09:51:20 +0100 |
| commit | b39927cf4cc5a9123d2b157ffd396884cb8156eb (patch) | |
| tree | 8e372f4b8fa678de7239a125ff4653f136a9dc66 /scripts/mod/modpost.h | |
| parent | a67dc21a38055ec2d8d85b2f64d98091748569b3 (diff) | |
| download | lwn-b39927cf4cc5a9123d2b157ffd396884cb8156eb.tar.gz lwn-b39927cf4cc5a9123d2b157ffd396884cb8156eb.zip | |
kbuild: check for section mismatch during modpost stage
Section mismatch is identified as references to .init*
sections from non .init sections. And likewise references
to .exit.* sections outside .exit sections.
.init.* sections are discarded after a module is initialized
and references to .init.* sections are oops candidates.
.exit.* sections are discarded when a module is built-in and
thus references to .exit are also oops candidates.
The checks were possible to do using 'make buildcheck' which
called the two perl scripts: reference_discarded.pl and
reference_init.pl. This patch just moves the same functionality
inside modpost and the scripts are then obsoleted.
They will though be kept for a while so users can do double
checks - but note that some .o files are skipped by the perl scripts
so result is not 1:1.
All credit for the concept goes to Keith Owens who implemented
the original perl scrips - this patch just moves it to modpost.
Compared to the perl script the implmentation in modpost will be run
for each kernel build - thus catching the error much sooner, but
the downside is that the individual .o file are not always identified.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'scripts/mod/modpost.h')
| -rw-r--r-- | scripts/mod/modpost.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/scripts/mod/modpost.h b/scripts/mod/modpost.h index c0de7b98c24c..3b5319dd937f 100644 --- a/scripts/mod/modpost.h +++ b/scripts/mod/modpost.h @@ -16,17 +16,27 @@ #define Elf_Ehdr Elf32_Ehdr #define Elf_Shdr Elf32_Shdr #define Elf_Sym Elf32_Sym +#define Elf_Addr Elf32_Addr +#define Elf_Section Elf32_Section #define ELF_ST_BIND ELF32_ST_BIND #define ELF_ST_TYPE ELF32_ST_TYPE +#define Elf_Rela Elf32_Rela +#define ELF_R_SYM ELF32_R_SYM +#define ELF_R_TYPE ELF32_R_TYPE #else #define Elf_Ehdr Elf64_Ehdr #define Elf_Shdr Elf64_Shdr #define Elf_Sym Elf64_Sym +#define Elf_Addr Elf64_Addr +#define Elf_Section Elf64_Section #define ELF_ST_BIND ELF64_ST_BIND #define ELF_ST_TYPE ELF64_ST_TYPE +#define Elf_Rela Elf64_Rela +#define ELF_R_SYM ELF64_R_SYM +#define ELF_R_TYPE ELF64_R_TYPE #endif #if KERNEL_ELFDATA != HOST_ELFDATA |