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author | 2022-08-03 09:45:08 -0700 | |
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committer | 2022-08-03 09:45:08 -0700 | |
commit | b6bb70f9ab80a11161252bf217993d2c40ea5eb2 (patch) | |
tree | ca1d2669919d6b335dc6c28aa04cd089e5fa274f /fs/remap_range.c | |
parent | Merge tag 'flexible-array-transformations-UAPI-6.0-rc1' of git://git.kernel.o... (diff) | |
parent | cgroup: Skip subtree root in cgroup_update_dfl_csses() (diff) | |
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Merge tag 'cgroup-for-5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup updates from Tejun Heo:
"Several core optimizations:
- threadgroup_rwsem write locking is skipped when configuring
controllers in empty subtrees.
Combined with CLONE_INTO_CGROUP, this allows the common static
usage pattern to not grab threadgroup_rwsem at all (glibc still
doesn't seem ready for CLONE_INTO_CGROUP unfortunately).
- threadgroup_rwsem used to be put into non-percpu mode by default
due to latency concerns in specific use cases. There's no reason
for everyone else to pay for it. Make the behavior optional.
- psi no longer allocates memory when disabled.
... along with some code cleanups"
* tag 'cgroup-for-5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup: Skip subtree root in cgroup_update_dfl_csses()
cgroup: remove "no" prefixed mount options
cgroup: Make !percpu threadgroup_rwsem operations optional
cgroup: Add "no" prefixed mount options
cgroup: Elide write-locking threadgroup_rwsem when updating csses on an empty subtree
cgroup.c: remove redundant check for mixable cgroup in cgroup_migrate_vet_dst
cgroup.c: add helper __cset_cgroup_from_root to cleanup duplicated codes
psi: dont alloc memory for psi by default
Diffstat (limited to 'fs/remap_range.c')
0 files changed, 0 insertions, 0 deletions