From: Paul E. McKenney Date: Mon, 29 Oct 2012 14:29:20 +0000 (-0700) Subject: rcu: Separate accounting of callbacks from callback-free CPUs X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~79^2^2~2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c635a4e1c24e9396db10ed7424b2084908b32252;p=pandora-kernel.git rcu: Separate accounting of callbacks from callback-free CPUs Currently, callback invocations from callback-free CPUs are accounted to the CPU that registered the callback, but using the same field that is used for normal callbacks. This makes it impossible to determine from debugfs output whether callbacks are in fact being diverted. This commit therefore adds a separate ->n_nocbs_invoked field in the rcu_data structure in which diverted callback invocations are counted. RCU's debugfs tracing still displays normal callback invocations using ci=, but displayed diverted callbacks with nci=. Signed-off-by: Paul E. McKenney Signed-off-by: Paul E. McKenney --- Reading git-diff-tree failed