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(parent: 779de6c) | patch
rcu: Make rcu_is_watching() really notrace
authorAlexei Starovoitov <ast@plumgrid.com>
Tue, 16 Jun 2015 17:35:18 +0000 (10:35 -0700)
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Wed, 22 Jul 2015 22:27:31 +0000 (15:27 -0700)
commit46f00d18fca42cc954c2e9e99a48b6f3a7741ed7
tree9f9eced5cfe86284498ee2f7541fb1920eabe367tree | snapshot
parent779de6ce54f627f955d4a3d0c5b3dcfaab74fea8commit | diff
rcu: Make rcu_is_watching() really notrace

Although rcu_is_watching() is marked notrace, it invokes preempt_disable()
and preempt_enable(), both of which can be traced.  This defeats the
purpose of the notrace on rcu_is_watching(), so this commit substitutes
preempt_disable_notrace() and preempt_enable_notrace().

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
kernel/rcu/tree.c diff | blob | history
Domain: System / Kernel;