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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2015-07-02 11:55:40 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2015-07-22 15:27:42 -0700
commit3ad81779ad35cd2e2ab34ba3f47f6f485696a105 (patch)
tree9199ed5472dce8ac9e36bfc029579fee6cfa64cb /kernel/rcu/tree_plugin.h
parent96a39bc434f94e213df43859fb8b01acda902634 (diff)
downloadlinux-sh-3ad81779ad35cd2e2ab34ba3f47f6f485696a105.tar.gz
scripts: Make checkpatch.pl warn on expedited RCU grace periods
The synchronize_rcu_expedited() and synchronize_sched_expedited() expedited-grace-period primitives induce OS jitter, which can degrade real-time response. This commit therefore adds a checkpatch.pl warning on any patch adding them. Note that this patch does not warn on synchronize_srcu_expedited() because it does not induce OS jitter, courtesy of its otherwise much-maligned read-side memory barriers. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: Joe Perches <joe@perches.com>
Diffstat (limited to 'kernel/rcu/tree_plugin.h')
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