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| author | Paul E. McKenney <paulmck@kernel.org> | 2023-03-17 20:01:02 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2023-04-04 08:36:23 -0700 |
| commit | 3b46679c623c2766f4c56fd3f9ce8edbb38c5d20 (patch) | |
| tree | 4904c05df78ea85ed7c133e8ef16a60eaac41fb5 /include | |
| parent | 03200b5ca3b4d4edf634dc052bf3b8eb8dc8bbbc (diff) | |
| download | linux-stable-3b46679c623c2766f4c56fd3f9ce8edbb38c5d20.tar.gz linux-stable-3b46679c623c2766f4c56fd3f9ce8edbb38c5d20.tar.bz2 linux-stable-3b46679c623c2766f4c56fd3f9ce8edbb38c5d20.zip | |
srcu: Move heuristics fields from srcu_struct to srcu_usage
This commit moves the ->srcu_size_jiffies, ->srcu_n_lock_retries,
and ->srcu_n_exp_nodelay fields 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 | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/srcutree.h b/include/linux/srcutree.h index 372e35b0e8b6..3023492d8d89 100644 --- a/include/linux/srcutree.h +++ b/include/linux/srcutree.h @@ -73,6 +73,9 @@ struct srcu_usage { unsigned long srcu_gp_seq_needed_exp; /* Furthest future exp GP. */ unsigned long srcu_gp_start; /* Last GP start timestamp (jiffies) */ unsigned long srcu_last_gp_end; /* Last GP end timestamp (ns) */ + unsigned long srcu_size_jiffies; /* Current contention-measurement interval. */ + unsigned long srcu_n_lock_retries; /* Contention events in current interval. */ + unsigned long srcu_n_exp_nodelay; /* # expedited no-delays in current GP phase. */ }; /* @@ -80,9 +83,6 @@ struct srcu_usage { */ struct srcu_struct { unsigned int srcu_idx; /* Current rdr array element. */ - unsigned long srcu_size_jiffies; /* Current contention-measurement interval. */ - unsigned long srcu_n_lock_retries; /* Contention events in current interval. */ - unsigned long srcu_n_exp_nodelay; /* # expedited no-delays in current GP phase. */ struct srcu_data __percpu *sda; /* Per-CPU srcu_data array. */ bool sda_is_static; /* May ->sda be passed to free_percpu()? */ unsigned long srcu_barrier_seq; /* srcu_barrier seq #. */ |