From: Tejun Heo Date: Tue, 12 Mar 2013 18:30:00 +0000 (-0700) Subject: workqueue: replace POOL_MANAGING_WORKERS flag with worker_pool->manager_arb X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~125^2~67 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=34a06bd6b6fa92ccd9d3e6866b6cb91264c3cd20;p=pandora-kernel.git workqueue: replace POOL_MANAGING_WORKERS flag with worker_pool->manager_arb POOL_MANAGING_WORKERS is used to synchronize the manager role. Synchronizing among workers doesn't need blocking and that's why it's implemented as a flag. It got converted to a mutex a while back to add blocking wait from CPU hotplug path - 6037315269 ("workqueue: use mutex for global_cwq manager exclusion"). Later it turned out that synchronization among workers and cpu hotplug need to be done separately. Eventually, POOL_MANAGING_WORKERS is restored and workqueue->manager_mutex got morphed into workqueue->assoc_mutex - 552a37e936 ("workqueue: restore POOL_MANAGING_WORKERS") and b2eb83d123 ("workqueue: rename manager_mutex to assoc_mutex"). Now, we're gonna need to be able to lock out managers from destroy_workqueue() to support multiple unbound pools with custom attributes making it again necessary to be able to block on the manager role. This patch replaces POOL_MANAGING_WORKERS with worker_pool->manager_arb. This patch doesn't introduce any behavior changes. v2: s/manager_mutex/manager_arb/ Signed-off-by: Tejun Heo --- Reading git-diff-tree failed