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authorRik van Riel <riel@redhat.com>2014-06-06 14:38:14 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-06 16:08:17 -0700
commit722773afd83209d4088d30946bc274f547528a0b (patch)
tree991d1315b8345909e9d9fae4f881b168b4f48944 /Documentation
parent984d74a72076a12b400339973e8c98fd2fcd90e5 (diff)
sysrq,rcu: suppress RCU stall warnings while sysrq 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 patch temporarily disables RCU stall warnings while a sysrq request is handled. Signed-off-by: Rik van Riel <riel@redhat.com> Suggested-by: Paul McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Madper Xie <cxie@redhat.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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