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authorReiner Huober <reiner.huober@nokia.com>2021-07-06 16:02:52 +0300
committerJessica Yu <jeyu@kernel.org>2021-07-19 15:51:40 +0300
commit4c5afb74d9450edc2e2e37243b469cc278b120d4 (patch)
tree18d38a799ac6f8a5588c836d3e610d9311fb5713 /scripts/module.lds.S
parente73f0f0ee7541171d89f2e2491130c7771ba58d3 (diff)
downloadlinux-4c5afb74d9450edc2e2e37243b469cc278b120d4.tar.xz
module: combine constructors in module linker script
The constructor code for modules must be aware of init code inside different sections. Newer GCC compilers write constructors in more than one section, e.g. ".ctors.65435". These must be combined into a single ".ctors" section. In the module loader, only the ".ctors" section is searched and the constructors therein are initialized, when CONFIG_CONSTRUCTORS=y is set. Other constructors are ignored. This change combines all ".ctors.*" and the ".ctors" section, if any, in <module>.ko into a single ."ctors" section. For code coverage in GCC, this is necessary to show the code coverage for modules, since code coverage uses such constructors when initializing a module in newer version of GCC. Signed-off-by: Reiner Huober <reiner.huober@nokia.com> Signed-off-by: Jessica Yu <jeyu@kernel.org>
Diffstat (limited to 'scripts/module.lds.S')
-rw-r--r--scripts/module.lds.S1
1 files changed, 1 insertions, 0 deletions
diff --git a/scripts/module.lds.S b/scripts/module.lds.S
index 04c5685c25cf..1d0e1e4dc3d2 100644
--- a/scripts/module.lds.S
+++ b/scripts/module.lds.S
@@ -24,6 +24,7 @@ SECTIONS {
__kcrctab 0 : { *(SORT(___kcrctab+*)) }
__kcrctab_gpl 0 : { *(SORT(___kcrctab_gpl+*)) }
+ .ctors 0 : ALIGN(8) { *(SORT(.ctors.*)) *(.ctors) }
.init_array 0 : ALIGN(8) { *(SORT(.init_array.*)) *(.init_array) }
__jump_table 0 : ALIGN(8) { KEEP(*(__jump_table)) }