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| author |  Ingo Molnar <mingo@kernel.org>
| 2024-03-08 12:18:17 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org>
| 2024-03-12 12:00:00 +0100 |
| commit | 646ebaf51c64c6416ca89765c20041363fc1b518 (patch) | |
| tree | 7ccb0c9e054817ac0c2808c479feb0dad83fcffe /kernel/sched | |
| parent | sched/balancing: Rename newidle_balance() => sched_balance_newidle() (diff) | |
| download | linux-646ebaf51c64c6416ca89765c20041363fc1b518.tar.gz linux-646ebaf51c64c6416ca89765c20041363fc1b518.tar.bz2 linux-646ebaf51c64c6416ca89765c20041363fc1b518.zip | |
sched/balancing: Rename find_idlest_group_cpu() => sched_balance_find_dst_group_cpu()
Standardize scheduler load-balancing function names on the
sched_balance_() prefix.
Also use 'dst' instead of 'idlest': while historically correct,
today it's not really true anymore that we return the 'idlest'
group or CPU, we sort by idle-exit latency and only return the
idlest CPUs from the lowest-latency set of CPUs.
The true 'idlest' CPUs often remain idle for a long time
and are never returned as long as the system is under-loaded.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Link: https://lore.kernel.org/r/20240308111819.1101550-12-mingo@kernel.org
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/fair.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index aa5ff0efcca8..02ff0272b2e4 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -7101,10 +7101,10 @@ static struct sched_group * find_idlest_group(struct sched_domain *sd, struct task_struct *p, int this_cpu); /* - * find_idlest_group_cpu - find the idlest CPU among the CPUs in the group. + * sched_balance_find_dst_group_cpu - find the idlest CPU among the CPUs in the group. */ static int -find_idlest_group_cpu(struct sched_group *group, struct task_struct *p, int this_cpu) +sched_balance_find_dst_group_cpu(struct sched_group *group, struct task_struct *p, int this_cpu) { unsigned long load, min_load = ULONG_MAX; unsigned int min_exit_latency = UINT_MAX; @@ -7191,7 +7191,7 @@ static inline int find_idlest_cpu(struct sched_domain *sd, struct task_struct *p continue; } - new_cpu = find_idlest_group_cpu(group, p, cpu); + new_cpu = sched_balance_find_dst_group_cpu(group, p, cpu); if (new_cpu == cpu) { /* Now try balancing at a lower domain level of 'cpu': */ sd = sd->child; |