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| author | Paul E. McKenney <paulmck@kernel.org> | 2023-03-17 14:43:08 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2023-04-04 08:35:44 -0700 |
| commit | 208f41b1312443401353bec0c1939e2bfc28adce (patch) | |
| tree | d540494622fb20eb85d5efac94319682ba96b3f8 /include | |
| parent | 95433f7263011e0e6e83caef85d98896dd99cab7 (diff) | |
| download | linux-stable-208f41b1312443401353bec0c1939e2bfc28adce.tar.gz linux-stable-208f41b1312443401353bec0c1939e2bfc28adce.tar.bz2 linux-stable-208f41b1312443401353bec0c1939e2bfc28adce.zip | |
srcu: Move ->level from srcu_struct to srcu_usage
This commit moves the ->level[] array from the srcu_struct structure to
the srcu_usage structure to reduce the size of the former in order to
improve cache locality.
Suggested-by: Christoph Hellwig <hch@lst.de>
Tested-by: Sachin Sant <sachinp@linux.ibm.com>
Tested-by: "Zhang, Qiang1" <qiang1.zhang@intel.com>
Tested-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/srcutree.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/srcutree.h b/include/linux/srcutree.h index 276f325f1296..c7373fe5c14b 100644 --- a/include/linux/srcutree.h +++ b/include/linux/srcutree.h @@ -62,14 +62,14 @@ struct srcu_node { */ struct srcu_usage { struct srcu_node *node; /* Combining tree. */ + struct srcu_node *level[RCU_NUM_LVLS + 1]; + /* First node at each level. */ }; /* * Per-SRCU-domain structure, similar in function to rcu_state. */ struct srcu_struct { - struct srcu_node *level[RCU_NUM_LVLS + 1]; - /* First node at each level. */ int srcu_size_state; /* Small-to-big transition state. */ struct mutex srcu_cb_mutex; /* Serialize CB preparation. */ spinlock_t __private lock; /* Protect counters and size state. */ |