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| author | Boqun Feng <boqun.feng@gmail.com> | 2018-03-07 16:49:39 +0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-05-15 10:26:01 -0700 |
| commit | 7be8c56f8f8a58af92f8791c5a09d48e342d7101 (patch) | |
| tree | 25cd6760e384e2443a51b51c04c64fb55575a0ee /tools/perf/scripts/python/compaction-times.py | |
| parent | 25f3d7effab632eb10d145f1a5aebf6515a04b98 (diff) | |
rcu: exp: Fix "must hold exp_mutex" comments for QS reporting functions
Since commit d9a3da0699b2 ("rcu: Add expedited grace-period support
for preemptible RCU"), there are comments for some funtions in
rcu_report_exp_rnp()'s call-chain saying that exp_mutex or its
predecessors needs to be held.
However, exp_mutex and its predecessors were used only to synchronize
between GPs, and it is clear that all variables visited by those functions
are under the protection of rcu_node's ->lock. Moreover, those functions
are currently called without held exp_mutex, and seems that doesn't
introduce any trouble.
So this patch fixes this problem by updating the comments to match the
current code.
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Fixes: d9a3da0699b2 ("rcu: Add expedited grace-period support for preemptible RCU")
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: Nicholas Piggin <npiggin@gmail.com>
Diffstat (limited to 'tools/perf/scripts/python/compaction-times.py')
0 files changed, 0 insertions, 0 deletions