Messages in this thread Patch in this message | | | From | Frantisek Hrbata <> | Subject | [PATCH v2 4/4] kernel: add support for init_array constructors | Date | Wed, 4 Sep 2013 16:42:56 +0200 |
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This adds the .init_array section as yet another section with constructors. This is needed because gcc could add __gcov_init calls to .init_array or .ctors section, depending on gcc version.
v2: - reuse mod->ctors for .init_array section for modules, because gcc uses .ctors or .init_array, but not both at the same time
Signed-off-by: Frantisek Hrbata <fhrbata@redhat.com> --- include/asm-generic/vmlinux.lds.h | 1 + kernel/module.c | 3 +++ 2 files changed, 4 insertions(+)
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index 69732d2..c55d8d9 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -468,6 +468,7 @@ #define KERNEL_CTORS() . = ALIGN(8); \ VMLINUX_SYMBOL(__ctors_start) = .; \ *(.ctors) \ + *(.init_array) \ VMLINUX_SYMBOL(__ctors_end) = .; #else #define KERNEL_CTORS() diff --git a/kernel/module.c b/kernel/module.c index 2069158..bbbd953 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -2760,6 +2760,9 @@ static void find_module_sections(struct module *mod, struct load_info *info) #ifdef CONFIG_CONSTRUCTORS mod->ctors = section_objs(info, ".ctors", sizeof(*mod->ctors), &mod->num_ctors); + if (!mod->ctors) + mod->ctors = section_objs(info, ".init_array", + sizeof(*mod->ctors), &mod->num_ctors); #endif #ifdef CONFIG_TRACEPOINTS -- 1.8.3.1
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