Hi Paul,
On Tue, Oct 27, 2020 at 08:50:52AM +0800, kernel test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git
> rcu/test
> head: 784a6343c3660446ae62db13628b20e9f876100f
> commit: 784a6343c3660446ae62db13628b20e9f876100f [76/76] Merge commit
> '3650b22' into rcu/test
> config: arm-randconfig-r026-20201026 (attached as .config)
> compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project
> f2c25c70791de95d2466e09b5b58fc37f6ccd7a4)
> reproduce (this is a W=1 build):
> wget
> https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
> ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # install arm cross compiling tool for clang build
> # apt-get install binutils-arm-linux-gnueabi
> #
> https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git/commit/?id=784a6343c3660446ae62db13628b20e9f876100f
> git remote add rcu
> https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git
> git fetch --no-tags rcu rcu/test
> git checkout 784a6343c3660446ae62db13628b20e9f876100f
> # save the attached .config to linux build tree
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <l...@intel.com>
>
> All errors (new ones prefixed by >>):
>
> >> drivers/dax/super.c:21:1: error: use of undeclared identifier
> >> '___srcu_struct_ptrs'
> DEFINE_STATIC_SRCU(dax_srcu);
> ^
> include/linux/srcutree.h:135:34: note: expanded from macro
> 'DEFINE_STATIC_SRCU'
> #define DEFINE_STATIC_SRCU(name) __DEFINE_SRCU(name, static)
> ^
> include/linux/srcutree.h:127:13: note: expanded from macro '__DEFINE_SRCU'
> __section(___srcu_struct_ptrs) = &name
> ^
> drivers/dax/super.c:70:6: warning: no previous prototype for function
> '__generic_fsdax_supported' [-Wmissing-prototypes]
> bool __generic_fsdax_supported(struct dax_device *dax_dev,
> ^
> drivers/dax/super.c:70:1: note: declare 'static' if the function is not
> intended to be used outside of this translation unit
> bool __generic_fsdax_supported(struct dax_device *dax_dev,
> ^
> static
> drivers/dax/super.c:168:6: warning: no previous prototype for function
> '__bdev_dax_supported' [-Wmissing-prototypes]
> bool __bdev_dax_supported(struct block_device *bdev, int blocksize)
> ^
> drivers/dax/super.c:168:1: note: declare 'static' if the function is not
> intended to be used outside of this translation unit
> bool __bdev_dax_supported(struct block_device *bdev, int blocksize)
> ^
> static
> drivers/dax/super.c:452:6: warning: no previous prototype for function
> 'run_dax' [-Wmissing-prototypes]
> void run_dax(struct dax_device *dax_dev)
> ^
> drivers/dax/super.c:452:1: note: declare 'static' if the function is not
> intended to be used outside of this translation unit
> void run_dax(struct dax_device *dax_dev)
> ^
> static
> 3 warnings and 1 error generated.
Please drop commit c1370c128cf4 ("srcu: Avoid escaped section names"),
it has been fixed in a different way as of v5.10-rc1, in
commit 33def8498fdd ("treewide: Convert macro and uses of __section(foo)
to __section("foo")").
Cheers,
Nathan
