On 7/2/20 12:15 PM, kernel test robot wrote:
Hi Nicholas,
I love your patch! Yet something to improve:
[auto build test ERROR on powerpc/next]
[also build test ERROR on tip/locking/core v5.8-rc3 next-20200702]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Nicholas-Piggin/powerpc-queued-spinlocks-and-rwlocks/20200702-155158
base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: powerpc-allyesconfig (attached as .config)
compiler: powerpc64-linux-gcc (GCC) 9.3.0
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
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=powerpc
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>
All errors (new ones prefixed by >>):
kernel/locking/lock_events.c:61:16: warning: no previous prototype for 'lockevent_read' [-Wmissing-prototypes]
61 | ssize_t __weak lockevent_read(struct file *file, char __user *user_buf,
| ^~~~~~~~~~~~~~
kernel/locking/lock_events.c: In function 'skip_lockevent':
kernel/locking/lock_events.c:126:12: error: implicit declaration of function 'pv_is_native_spin_unlock' [-Werror=implicit-function-declaration]
126 | pv_on = !pv_is_native_spin_unlock();
| ^~~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
vim +/pv_is_native_spin_unlock +126 kernel/locking/lock_events.c
I think you will need to add the following into
arch/powerpc/include/asm/qspinlock_paravirt.h:
static inline pv_is_native_spin_unlock(void)
{
return !is_shared_processor();
}
Cheers,
Longman
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