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authorRik van Riel <riel@redhat.com>2014-04-26 23:15:35 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2014-05-19 10:52:04 -0700
commit61f38db3e3c0e4c3be0858750e2cabeadaecac0c (patch)
tree5ded19f41e8ceb49a55b2942fb0a5774a95126d1 /kernel/softirq.c
parente534165bbf6a04d001748c573c7d6a7bae3713a5 (diff)
downloadlinux-61f38db3e3c0e4c3be0858750e2cabeadaecac0c.tar.bz2
rcu: Provide API to suppress stall warnings while sysrc runs
Some sysrq handlers can run for a long time, because they dump a lot of data onto a serial console. Having RCU stall warnings pop up in the middle of them only makes the problem worse. This commit provides rcu_sysrq_start() and rcu_sysrq_end() APIs to temporarily suppress RCU CPU stall warnings while a sysrq request is handled. Signed-off-by: Rik van Riel <riel@redhat.com> [ paulmck: Fix TINY_RCU build error. ] Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/softirq.c')
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