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Merge "soc: qcom: memoffline: use a freezable unbounded workqueue for migration"

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qctecmdr 2021-02-12 18:58:25 -08:00 • committed by Gerrit - the friendly Code Review server
commit 1ac57cdc1b
1 changed files with 18 additions and 2 deletions
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20
drivers/soc/qcom/mem-offline.c
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@ -48,6 +48,7 @@ static u32 offline_granule;
static bool is_rpm_controller;
static bool has_pend_offline_req;
static atomic_long_t totalram_pages_with_offline = ATOMIC_INIT(0);
static struct workqueue_struct *migrate_wq;
#define MODULE_CLASS_NAME "mem-offline"
#define MIGRATE_TIMEOUT_SEC (20)
@ -971,6 +972,13 @@ static ssize_t show_mem_stats(struct kobject *kobj,
static struct kobj_attribute stats_attr =
__ATTR(stats, 0444, show_mem_stats, NULL);
static ssize_t show_anon_migrate(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%lu\n",
atomic_read(&target_migrate_pages));
}
static ssize_t store_anon_migrate(struct kobject *kobj,
struct kobj_attribute *attr, const char *buf,
size_t size)
@ -984,7 +992,7 @@ static ssize_t store_anon_migrate(struct kobject *kobj,
atomic_add(val, &target_migrate_pages);
if (!work_pending(&fill_movable_zone_work))
queue_work(system_unbound_wq, &fill_movable_zone_work);
queue_work(migrate_wq, &fill_movable_zone_work);
return size;
}
@ -993,7 +1001,7 @@ static struct kobj_attribute offline_granule_attr =
__ATTR(offline_granule, 0444, show_mem_offline_granule, NULL);
static struct kobj_attribute anon_migration_size_attr =
__ATTR(anon_migrate, 0220, NULL, store_anon_migrate);
__ATTR(anon_migrate, 0644, show_anon_migrate, store_anon_migrate);
static struct attribute *mem_root_attrs[] = {
&stats_attr.attr,
@ -1124,6 +1132,14 @@ static int mem_offline_driver_probe(struct platform_device *pdev)
if (bypass_send_msg)
pr_info("mem-offline: bypass mode\n");
migrate_wq = alloc_workqueue("reverse_migrate_wq",
WQ_UNBOUND | WQ_FREEZABLE, 0);
if (!migrate_wq) {
pr_err("Failed to create the worker for reverse migration\n");
ret = -ENOMEM;
goto err_sysfs_remove_group;
}
return 0;
err_sysfs_remove_group: