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| author | Alexei Starovoitov <ast@plumgrid.com> | 2015-06-16 10:35:18 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-07-22 15:27:31 -0700 |
| commit | 46f00d18fca42cc954c2e9e99a48b6f3a7741ed7 (patch) | |
| tree | 9f9eced5cfe86284498ee2f7541fb1920eabe367 /Documentation/RCU | |
| parent | 779de6ce54f627f955d4a3d0c5b3dcfaab74fea8 (diff) | |
| download | lwn-46f00d18fca42cc954c2e9e99a48b6f3a7741ed7.tar.gz lwn-46f00d18fca42cc954c2e9e99a48b6f3a7741ed7.zip | |
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>
Diffstat (limited to 'Documentation/RCU')
0 files changed, 0 insertions, 0 deletions