refscale: Prevent buffer to pr_alert() being too long

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0Day/LKP observed that the refscale results fail to complete when larger
values of nrun (such as 300) are specified.  The problem is that printk()
can accept at most a 1024-byte buffer.  This commit therefore prints
the buffer whenever its length exceeds 800 bytes.

CC: Philip Li <philip.li@intel.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

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Li Zhijian 2021-10-25 11:26:57 +08:00 • committed by Paul E. McKenney

parent c30c876312

commit 9880eb878c

1 changed files with 13 additions and 10 deletions

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23

kernel/rcu/refscale.c

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