rcu: Dump only the current CPU's buffers for idle-entry/exit warnings
Problems in RCU idle entry and exit are almost always confined to the offending CPU. This commit therefore switches ftrace_dump() from DUMP_ALL to DUMP_ORIG. Signed-off-by: NPaul E. McKenney <paul.mckenney@linaro.org> Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com> Tested-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Tested-by: NPascal Chapperon <pascal.chapperon@wanadoo.fr>
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