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| author | Shrikanth Hegde <sshegde@linux.ibm.com> | 2025-03-06 10:59:53 +0530 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2025-03-06 10:21:31 +0100 |
| commit | 14672f059d83f591afb2ee1fff56858efe055e5a (patch) | |
| tree | 99ca9727bd36f6eb0194f53dc8fd03715d34d283 /kernel | |
| parent | 3b4035ddbfc8e4521f85569998a7569668cccf51 (diff) | |
| download | linux-14672f059d83f591afb2ee1fff56858efe055e5a.tar.gz linux-14672f059d83f591afb2ee1fff56858efe055e5a.tar.bz2 linux-14672f059d83f591afb2ee1fff56858efe055e5a.zip | |
sched/deadline: Use online cpus for validating runtime
The ftrace selftest reported a failure because writing -1 to
sched_rt_runtime_us returns -EBUSY. This happens when the possible
CPUs are different from active CPUs.
Active CPUs are part of one root domain, while remaining CPUs are part
of def_root_domain. Since active cpumask is being used, this results in
cpus=0 when a non active CPUs is used in the loop.
Fix it by looping over the online CPUs instead for validating the
bandwidth calculations.
Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Juri Lelli <juri.lelli@redhat.com>
Link: https://lore.kernel.org/r/20250306052954.452005-2-sshegde@linux.ibm.com
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched/deadline.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c index 38e4537790af..ff4df16b5186 100644 --- a/kernel/sched/deadline.c +++ b/kernel/sched/deadline.c @@ -3189,7 +3189,7 @@ int sched_dl_global_validate(void) * value smaller than the currently allocated bandwidth in * any of the root_domains. */ - for_each_possible_cpu(cpu) { + for_each_online_cpu(cpu) { rcu_read_lock_sched(); if (dl_bw_visited(cpu, gen)) |