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| author |   Paul E. McKenney <paulmck@kernel.org> | 2021-02-26 11:25:29 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2021-03-15 13:53:24 -0700 |
| commit | 7e937220afa3eada0d4611b31e4e3c60770e39b4 (patch) | |
| tree | 3e5f1785dbab114fc34d174e6dfd79bfc0615f6c /tools/testing/selftests/rcutorture/bin/jitter.sh | |
| parent | docs: Correctly spell Stephen Hemminger's name (diff) | |
| download | linux-dev-7e937220afa3eada0d4611b31e4e3c60770e39b4.tar.xz linux-dev-7e937220afa3eada0d4611b31e4e3c60770e39b4.zip | |
rcu: Add explicit barrier() to __rcu_read_unlock()
Because preemptible RCU's __rcu_read_unlock() is an external function,
the rough equivalent of an implicit barrier() is inserted by the compiler.
Except that there is a direct call to __rcu_read_unlock() in that same
file, and compilers are getting to the point where they might choose to
inline the fastpath of the __rcu_read_unlock() function.
This commit therefore adds an explicit barrier() to the very beginning
of __rcu_read_unlock().
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'tools/testing/selftests/rcutorture/bin/jitter.sh')
0 files changed, 0 insertions, 0 deletions