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workaround fix long page fault issue

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- change version to 2
- exit page fault with EIO if waited long time
- reduce log and enlarge page fault warning timeout to 500ms

Change-Id: I87858443d639c43cc804931063fe71daf0eccc96
Signed-off-by: huangzq2 <huangzq2@motorola.com>
Reviewed-on: https://gerrit.mot.com/2792701
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Xiangpo Zhao <zhaoxp3@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
huangzq2 2023-11-11 20:35:37 +08:00 • committed by Zhangqing Huang
commit 266fc07dff
2 changed files with 10 additions and 4 deletions
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12
drivers/moto_swap/hybridswap/hybridswap_eswap.c
View file

@ -174,7 +174,7 @@ struct hyb_entries_table {
(index) != (hindex); (index) = (tmp), (tmp) = prev_index((index), (tab)))
static unsigned long warn_level[HYB_CLASS_BUTT] = {
0, 200, 500, 0
0, 500, 500, 0
};
const char *key_point_name[HYB_KYE_POINT_BUTT] = {
@ -4946,7 +4946,7 @@ static int hybridswap_permcg_reclaim(struct mem_cgroup *memcg,
atomic64_inc(&hybs->hybridswap_outcnt);
out:
hybp(HYB_INFO, "memcg %s %lu %lu out_to_eswap %lu KB eswap %lu zram %lu %d\n",
hybp(HYB_DEBUG, "memcg %s %lu %lu out_to_eswap %lu KB eswap %lu zram %lu %d\n",
hybs->name, (unsigned long)require_size_before, (unsigned long)require_size,
(unsigned long)((require_size_before - require_size) >> 10),
(unsigned long)atomic64_read(&hybs->hybridswap_stored_size),
@ -4998,7 +4998,7 @@ static int hybridswap_permcg_reclaimin(struct mem_cgroup *memcg,
rq->reclaimined_sz += mcg_reclaimed_size;
mutex_unlock(&hybs->swap_lock);
hybp(HYB_INFO, "memcg %s mcg_reclaimed_size %lu rq->reclaimined_sz %lu rq->size %lu rq->out_size %lu ret %d\n",
hybp(HYB_DEBUG, "memcg %s mcg_reclaimed_size %lu rq->reclaimined_sz %lu rq->size %lu rq->out_size %lu ret %d\n",
hybs->name, mcg_reclaimed_size, rq->reclaimined_sz,
rq->size, rq->out_size, ret);
@ -5304,6 +5304,12 @@ static int hybridswap_page_fault_fetch_eswap(struct zram *zram,
if (likely(iowork->ioentry->eswapid != -EBUSY))
break;
// Moto: waited enough, exit with EIO.
if (wait_cycle > 100000) {
hybp(HYB_ERR, "waited 100000 cycles in page fault, exit with EIO!\n");
return -EIO;
}
if (wait_cycle < 100)
udelay(50);
else

2
drivers/moto_swap/hybridswap/hybridswap_swapd.c
View file

@ -36,7 +36,7 @@
#endif
#include "hybridswap_internal.h"
#define MOTO_SWAP_VERSION 1
#define MOTO_SWAP_VERSION 2
struct swapd_param {
unsigned int min_grade;