From: Paul E. McKenney Date: Tue, 21 Apr 2015 16:12:13 +0000 (-0700) Subject: rcu: Make RCU able to tolerate undefined CONFIG_RCU_FANOUT_LEAF X-Git-Tag: omap-for-v4.3/legacy-v2-signed~212^2^2^5~3 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=47d631af58bb9b2f2dd3d0da8c98a79a5e75c738;p=pandora-kernel.git rcu: Make RCU able to tolerate undefined CONFIG_RCU_FANOUT_LEAF This commit introduces an RCU_FANOUT_LEAF C-preprocessor macro so that RCU will build even when CONFIG_RCU_FANOUT_LEAF is undefined. The RCU_FANOUT_LEAF macro is set to the value of CONFIG_RCU_FANOUT_LEAF when defined, otherwise it is set to 32 for 32-bit systems and 64 for 64-bit systems. This commit then makes CONFIG_RCU_FANOUT_LEAF depend on CONFIG_RCU_EXPERT, so that Kconfig users won't be asked about CONFIG_RCU_FANOUT_LEAF unless they want to be. Reported-by: Ingo Molnar Signed-off-by: Paul E. McKenney Reviewed-by: Pranith Kumar --- Reading git-diff-tree failed