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@xxxxxxxxxx>
---
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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