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SubjectRe: [PATCH v9 3/5] dma-buf: system_heap: Add drm pagepool support to system heap
Hi John,

I love your patch! Yet something to improve:

[auto build test ERROR on linux/master]
[also build test ERROR on drm-intel/for-linux-next drm-tip/drm-tip linus/master v5.13 next-20210629]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in]

base: c54b245d011855ea91c5beff07f1db74143ce614
config: i386-randconfig-a006-20210628 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
git remote add linux-review
git fetch --no-tags linux-review John-Stultz/Generic-page-pool-deferred-freeing-for-system-dmabuf-hea/20210630-093515
git checkout 79b275adef7ae3f4ace216d9127ed5a082b75d50
# save the attached .config to linux build tree
mkdir build_dir
make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <>

All errors (new ones prefixed by >>):

ld: drivers/dma-buf/heaps/system_heap.o: in function `system_heap_create':
>> system_heap.c:(.text+0xb3): undefined reference to `drm_page_pool_init'
>> ld: system_heap.c:(.text+0xc7): undefined reference to `drm_page_pool_init'
ld: system_heap.c:(.text+0xd8): undefined reference to `drm_page_pool_init'
ld: drivers/dma-buf/heaps/system_heap.o: in function `system_heap_dma_buf_release':
>> system_heap.c:(.text+0x734): undefined reference to `drm_page_pool_add'
ld: drivers/dma-buf/heaps/system_heap.o: in function `system_heap_allocate':
>> system_heap.c:(.text+0x81f): undefined reference to `drm_page_pool_remove'

0-DAY CI Kernel Test Service, Intel Corporation
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