github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-07-31 03:27:03 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

sched/walt: Track CPUs that can't be paused

Browse Source 
The first CPU that supports AArch32 in EL0 on asymmetric AArch32
systems can't be paused. Track such CPUs in core_ctl to not to
request pause_cpus().

Change-Id: I4a9132884c3e322e9a6bd7d1f06a82bd9113eec8
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
This commit is contained in:
Pavankumar Kondeti 2021-02-21 06:34:10 +05:30 committed by Rishabh Bhatnagar
parent 3789d05a04
commit 9d253eadc1
1 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
kernel/sched/walt/core_ctl.c
View File

@ -53,6 +53,7 @@ struct cpu_data {
struct cluster_data *cluster;
struct list_head sib;
bool paused_by_us;
bool disabled;
};
static DEFINE_PER_CPU(struct cpu_data, cpu_state);
@ -1007,6 +1008,8 @@ static void try_to_pause(struct cluster_data *cluster, unsigned int need,
if (!num_cpus--)
break;
if (c->disabled)
continue;
if (!is_active(c))
continue;
if (active_cpus - nr_pending == need)
@ -1043,6 +1046,8 @@ static void try_to_pause(struct cluster_data *cluster, unsigned int need,
if (!num_cpus--)
break;
if (c->disabled)
continue;
if (!is_active(c))
continue;
if (active_cpus - nr_pending <= cluster->max_cpus)
@ -1246,6 +1251,8 @@ static int cluster_init(const struct cpumask *mask)
state = &per_cpu(cpu_state, cpu);
state->cluster = cluster;
state->cpu = cpu;
state->disabled = get_cpu_device(cpu) &&
get_cpu_device(cpu)->offline_disabled;
list_add_tail(&state->sib, &cluster->lru);
}
cluster->active_cpus = get_active_cpu_count(cluster);