diff --git a/drivers/android/Kconfig b/drivers/android/Kconfig index c9636c3c6dbd..491751ab0dbf 100644 --- a/drivers/android/Kconfig +++ b/drivers/android/Kconfig @@ -74,14 +74,32 @@ config ANDROID_VENDOR_HOOKS Allow vendor modules to attach to tracepoint "hooks" defined via DECLARE_HOOK or DECLARE_RESTRICTED_HOOK. -config ANDROID_STRUCT_PADDING - bool "Android Struct Padding" +config ANDROID_KABI_RESERVE + bool "Android KABI reserve padding" + default y + help + This option enables the padding that the Android GKI kernel adds + to many different kernel structures to support an in-kernel stable ABI + over the lifespan of support for the kernel. + + Only disable this option if you have a system that needs the Android + kernel drivers, but is NOT an Android GKI kernel image. If disabled + it has the possibility to make the kernel static and runtime image + slightly smaller but will NOT be supported by the Google Android + kernel team. + + If even slightly unsure, say Y. + +config ANDROID_VENDOR_OEM_DATA + bool "Android vendor and OEM data padding" default y help This option enables the padding that the Android GKI kernel adds to many different kernel structures to support an in-kernel stable ABI over the lifespan of support for the kernel as well as OEM additional - fields that are needed by some of the Android kernel tracepoints. + fields that are needed by some of the Android kernel tracepoints. The + macros enabled by this option are used to enable padding in vendor modules + used for the above specified purposes. Only disable this option if you have a system that needs the Android kernel drivers, but is NOT an Android GKI kernel image and you do NOT diff --git a/include/linux/android_kabi.h b/include/linux/android_kabi.h index dc0da1ab45d6..f6dd7f00b386 100644 --- a/include/linux/android_kabi.h +++ b/include/linux/android_kabi.h @@ -83,7 +83,7 @@ * number: the "number" of the padding variable in the structure. Start with * 1 and go up. */ -#ifdef CONFIG_ANDROID_STRUCT_PADDING +#ifdef CONFIG_ANDROID_KABI_RESERVE #define ANDROID_KABI_RESERVE(number) _ANDROID_KABI_RESERVE(number) #else #define ANDROID_KABI_RESERVE(number) diff --git a/include/linux/android_vendor.h b/include/linux/android_vendor.h index ab3dca23966a..af3014ccc82e 100644 --- a/include/linux/android_vendor.h +++ b/include/linux/android_vendor.h @@ -26,7 +26,7 @@ * Same as ANDROID_VENDOR_DATA but allocates an array of u64 with * the specified size */ -#ifdef CONFIG_ANDROID_STRUCT_PADDING +#ifdef CONFIG_ANDROID_VENDOR_OEM_DATA #define ANDROID_VENDOR_DATA(n) u64 android_vendor_data##n #define ANDROID_VENDOR_DATA_ARRAY(n, s) u64 android_vendor_data##n[s] diff --git a/init/init_task.c b/init/init_task.c index 26e018fbbf78..9b8ad6861316 100644 --- a/init/init_task.c +++ b/init/init_task.c @@ -213,7 +213,7 @@ struct task_struct init_task #ifdef CONFIG_SECCOMP_FILTER .seccomp = { .filter_count = ATOMIC_INIT(0) }, #endif -#ifdef CONFIG_ANDROID_STRUCT_PADDING +#ifdef CONFIG_ANDROID_VENDOR_OEM_DATA .android_vendor_data1 = {0, }, .android_oem_data1 = {0, }, #endif