diff options
| author | Chen Yu <yu.c.chen@intel.com> | 2023-07-13 09:31:33 +0800 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2023-07-26 12:28:51 +0200 |
| commit | 4efcc8bc7e08c09c58a2f5cbc2096fbda5b7cf5e (patch) | |
| tree | 8789fa65c2a006f035e102e0e6eb271be41672e1 /kernel/sched | |
| parent | c2e164ac33f75e0acb93004960c73bd9166d3d35 (diff) | |
| download | linux-4efcc8bc7e08c09c58a2f5cbc2096fbda5b7cf5e.tar.gz | |
sched/topology: Align group flags when removing degenerate domain
The flags of the child of a given scheduling domain are used to initialize
the flags of its scheduling groups. When the child of a scheduling domain
is degenerated, the flags of its local scheduling group need to be updated
to align with the flags of its new child domain.
The flag SD_SHARE_CPUCAPACITY was aligned in
Commit bf2dc42d6beb ("sched/topology: Propagate SMT flags when removing degenerate domain").
Further generalize this alignment so other flags can be used later, such as
in cluster-based task wakeup. [1]
Reported-by: Yicong Yang <yangyicong@huawei.com>
Suggested-by: Ricardo Neri <ricardo.neri@intel.com>
Signed-off-by: Chen Yu <yu.c.chen@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Tim Chen <tim.c.chen@linux.intel.com>
Reviewed-by: Yicong Yang <yangyicong@hisilicon.com>
Link: https://lore.kernel.org/r/20230713013133.2314153-1-yu.c.chen@intel.com
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/topology.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c index 7cfcfe5d27b90..05a5bc678c089 100644 --- a/kernel/sched/topology.c +++ b/kernel/sched/topology.c @@ -722,8 +722,7 @@ cpu_attach_domain(struct sched_domain *sd, struct root_domain *rd, int cpu) if (parent->parent) { parent->parent->child = tmp; - if (tmp->flags & SD_SHARE_CPUCAPACITY) - parent->parent->groups->flags |= SD_SHARE_CPUCAPACITY; + parent->parent->groups->flags = tmp->flags; } /* |