forked from torvalds/linux
-
Notifications
You must be signed in to change notification settings - Fork 1
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
cgroup/cpuset: Include isolated cpuset CPUs in cpu_is_isolated() check
Currently, the cpu_is_isolated() function checks only the statically isolated CPUs specified via the "isolcpus" and "nohz_full" kernel command line options. This function is used by vmstat and memcg to reduce interference with isolated CPUs by not doing stat flushing or scheduling works on those CPUs. Workloads running on isolated CPUs within isolated cpuset partitions should receive the same treatment to reduce unnecessary interference. This patch introduces a new cpuset_cpu_is_isolated() function to be called by cpu_is_isolated() so that the set of dynamically created cpuset isolated CPUs will be included in the check. Assuming that testing a bit in a cpumask is atomic, no synchronization primitive is currently used to synchronize access to the cpuset's isolated_cpus mask. Signed-off-by: Waiman Long <[email protected]> Signed-off-by: Tejun Heo <[email protected]>
- Loading branch information
1 parent
77070ee
commit 3232e7a
Showing
3 changed files
with
20 additions
and
1 deletion.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters