Re: [PATCH v2 1/4] percpu_stats: Simple per-cpu statistics count helper functions

kbuild test robot
2016-04-08T16:45:57Z

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Hi Waiman,

[auto build test ERROR on ext4/dev]
[also build test ERROR on v4.6-rc2 next-20160408]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url: https://github.com/0day-ci/linux/commits/Waiman-Long/ext4-Improve-parallel-I-O-performance-on-NVDIMM/20160409-002128
base: https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev
config: alpha-defconfig (attached as .config)
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=alpha

Note: the linux-review/Waiman-Long/ext4-Improve-parallel-I-O-performance-on-NVDIMM/20160409-002128 HEAD 712a939b92b9178cb79df4050bba8e6b1d03ca63 builds fine.
It only hurts bisectibility.

All errors (new ones prefixed by >>):

In file included from lib/percpu_stats.c:5:0:
include/linux/percpu_stats.h: In function 'percpu_stats_add':
>> include/linux/percpu_stats.h:29:2: error: implicit declaration of function 'raw_local_irq_save' [-Werror=implicit-function-declaration]
this_cpu_add(pcs->stats[stat], cnt);
^
>> include/linux/percpu_stats.h:29:2: error: implicit declaration of function 'raw_local_irq_restore' [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors

vim +/raw_local_irq_save +29 include/linux/percpu_stats.h

23 * @cnt: The value to be added to the statistics count
24 */
25 static inline void
26 percpu_stats_add(struct percpu_stats *pcs, int stat, int cnt)
27 {
28 BUG_ON((unsigned int)stat >= pcs->nstats);
> 29 this_cpu_add(pcs->stats[stat], cnt);
30 }
31
32 static inline void percpu_stats_inc(struct percpu_stats *pcs, int stat)

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