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Merge "soc: qcom: mem-offline: timeout mechanism for memory offline"

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qctecmdr 2021-11-19 05:21:34 -08:00 committed by Gerrit - the friendly Code Review server
commit f071855366
1 changed files with 21 additions and 0 deletions
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21
drivers/soc/qcom/mem-offline.c
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@ -61,11 +61,14 @@ static bool is_rpm_controller;
static bool has_pend_offline_req;
static struct workqueue_struct *migrate_wq;
static DECLARE_BITMAP(movable_bitmap, 1024);
static struct timer_list mem_offline_timeout_timer;
static struct task_struct *offline_trig_task;
#define MODULE_CLASS_NAME "mem-offline"
#define MEMBLOCK_NAME "memory%lu"
#define SEGMENT_NAME "segment%lu"
#define BUF_LEN 100
#define MIGRATE_TIMEOUT_SEC 20
#define OFFLINE_TIMEOUT_SEC 7
struct section_stat {
unsigned long success_count;
@ -502,6 +505,12 @@ static unsigned long get_section_allocated_memory(unsigned long sec_nr)
return used;
}
static void mem_offline_timeout_cb(struct timer_list *timer)
{
pr_info("mem-offline: SIGALRM is raised to stop the offline operation\n");
send_sig_info(SIGALRM, SEND_SIG_PRIV, offline_trig_task);
}
static int mem_event_callback(struct notifier_block *self,
unsigned long action, void *arg)
{
@ -566,6 +575,8 @@ static int mem_event_callback(struct notifier_block *self,
idx) / sections_per_block].fail_count;
has_pend_offline_req = true;
cancel_work_sync(&fill_movable_zone_work);
offline_trig_task = current;
mod_timer(&mem_offline_timeout_timer, jiffies + (OFFLINE_TIMEOUT_SEC * HZ));
cur = ktime_get();
break;
case MEM_OFFLINE:
@ -586,6 +597,14 @@ static int mem_event_callback(struct notifier_block *self,
pr_debug("mem-offline: Segment %d memblk_bitmap 0x%lx\n",
seg_idx, segment_infos[seg_idx].bitmask_kernel_blk);
totalram_pages_add(memory_block_size_bytes()/PAGE_SIZE);
del_timer_sync(&mem_offline_timeout_timer);
offline_trig_task = NULL;
break;
case MEM_CANCEL_OFFLINE:
pr_debug("mem-offline: MEM_CANCEL_OFFLINE : start = 0x%llx end = 0x%llx\n",
start_addr, end_addr);
del_timer_sync(&mem_offline_timeout_timer);
offline_trig_task = NULL;
break;
case MEM_CANCEL_ONLINE:
pr_info("mem-offline: MEM_CANCEL_ONLINE: start = 0x%llx end = 0x%llx\n",
@ -1822,12 +1841,14 @@ static struct platform_driver mem_offline_driver = {
static int __init mem_module_init(void)
{
timer_setup(&mem_offline_timeout_timer, mem_offline_timeout_cb, 0);
return platform_driver_register(&mem_offline_driver);
}
subsys_initcall(mem_module_init);
static void __exit mem_module_exit(void)
{
del_timer_sync(&mem_offline_timeout_timer);
platform_driver_unregister(&mem_offline_driver);
}
module_exit(mem_module_exit);