5:13 a.m.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/mel/linux.git
mm-reclaimcongest-v1r4
head: 07285068a0f1fb7bee052bf5a4b71c4d8d4b2f77
commit: a7f2d5fd13a3022b3906b6f849998b726fa3eb83 [1/5] mm/vmscan: Throttle reclaim until
some writeback completes if congested
config: microblaze-buildonly-randconfig-r004-20210929 (attached as .config)
compiler: microblaze-linux-gcc (GCC) 11.2.0
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
#
https://git.kernel.org/pub/scm/linux/kernel/git/mel/linux.git/commit/?id=...
git remote add mel https://git.kernel.org/pub/scm/linux/kernel/git/mel/linux.git
git fetch --no-tags mel mm-reclaimcongest-v1r4
git checkout a7f2d5fd13a3022b3906b6f849998b726fa3eb83
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=microblaze
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All errors (new ones prefixed by >>):
mm/vmscan.c: In function 'reclaim_throttle':
> mm/vmscan.c:1015:14: error: variable 'ret' set but not
used [-Werror=unused-but-set-variable]
1015 | long ret;
| ^~~
mm/vmscan.c: In function 'demote_page_list':
mm/vmscan.c:1381:13: error: variable 'err' set but not used
[-Werror=unused-but-set-variable]
1381 | int err;
| ^~~
cc1: all warnings being treated as errors
vim +/ret +1015 mm/vmscan.c
1008
1009 static void
1010 reclaim_throttle(pg_data_t *pgdat, enum vmscan_throttle_state reason,
1011 long timeout)
1012 {
1013 wait_queue_head_t *wqh = &pgdat->reclaim_wait;
1014 unsigned long start = jiffies;
1015 long ret;
1016 DEFINE_WAIT(wait);
1017
1018 atomic_inc(&pgdat->nr_reclaim_throttled);
1019 WRITE_ONCE(pgdat->nr_reclaim_start,
1020 node_page_state(pgdat, NR_THROTTLED_WRITTEN));
1021
1022 prepare_to_wait(wqh, &wait, TASK_INTERRUPTIBLE);
1023 ret = schedule_timeout(timeout);
1024 finish_wait(wqh, &wait);
1025 atomic_dec(&pgdat->nr_reclaim_throttled);
1026
1027 trace_mm_vmscan_throttled(pgdat->node_id, jiffies_to_usecs(timeout),
1028 jiffies_to_usecs(jiffies - start),
1029 reason);
1030 }
1031
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org