diff options
| author | Paul E. McKenney <paulmck@linux.ibm.com> | 2019-05-21 23:39:15 +0300 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.ibm.com> | 2019-08-14 00:35:49 +0300 |
| commit | c1ab99d66ebcebedd9d416a840c488eaf079f3e9 (patch) | |
| tree | 5785689b2e0fb75287b792a3d6f6271325b28ba9 /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | ec5ef87bac820be8ae9cc0a95108cded039ed8ef (diff) | |
| download | linux-c1ab99d66ebcebedd9d416a840c488eaf079f3e9.tar.xz | |
rcu/nocb: Use build-time no-CBs check in rcu_core()
Currently, rcu_core() invokes rcu_segcblist_is_offloaded() each time it
needs to know whether the current CPU is a no-CBs CPU. Given that it is
not possible to change the no-CBs status of a CPU after boot, and given
that it is not possible to even have no-CBs CPUs in CONFIG_RCU_NOCB_CPU=n
kernels, this repeated runtime invocation wastes CPU. This commit
therefore created a const on-stack variable to allow this check to be
done only once per rcu_core() invocation.
Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions