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crypto: hisilicon - fix to return sub-optimal device when best device has no qps 

Currently find_zip_device() finds zip device which has the min NUMA
distance with current CPU.

This patch modifies find_zip_device to return sub-optimal device when best
device has no qps. This patch sorts all devices by NUMA distance, then
finds the best zip device which has free qp.

Signed-off-by: Zhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: Shukun Tan <tanshukun1@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Zhou Wang 2019-10-26 11:00:16 +08:00 committed by Herbert Xu
parent f0c8b6a1e1
commit 700f7d0d29
3 changed files with 78 additions and 21 deletions
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21
drivers/crypto/hisilicon/qm.c
View File

@ -1127,6 +1127,7 @@ struct hisi_qp *hisi_qm_create_qp(struct hisi_qm *qm, u8 alg_type)
}
set_bit(qp_id, qm->qp_bitmap);
qm->qp_array[qp_id] = qp;
qm->qp_in_used++;
write_unlock(&qm->qps_lock);
@ -1191,6 +1192,7 @@ void hisi_qm_release_qp(struct hisi_qp *qp)
write_lock(&qm->qps_lock);
qm->qp_array[qp->qp_id] = NULL;
clear_bit(qp->qp_id, qm->qp_bitmap);
qm->qp_in_used--;
write_unlock(&qm->qps_lock);
kfree(qp);
@ -1395,6 +1397,24 @@ static void hisi_qm_cache_wb(struct hisi_qm *qm)
}
}
/**
* hisi_qm_get_free_qp_num() - Get free number of qp in qm.
* @qm: The qm which want to get free qp.
*
* This function return free number of qp in qm.
*/
int hisi_qm_get_free_qp_num(struct hisi_qm *qm)
{
int ret;
read_lock(&qm->qps_lock);
ret = qm->qp_num - qm->qp_in_used;
read_unlock(&qm->qps_lock);
return ret;
}
EXPORT_SYMBOL_GPL(hisi_qm_get_free_qp_num);
/**
* hisi_qm_init() - Initialize configures about qm.
* @qm: The qm needing init.
@ -1458,6 +1478,7 @@ int hisi_qm_init(struct hisi_qm *qm)
if (ret)
goto err_free_irq_vectors;
qm->qp_in_used = 0;
mutex_init(&qm->mailbox_lock);
rwlock_init(&qm->qps_lock);

2
drivers/crypto/hisilicon/qm.h
View File

@ -134,6 +134,7 @@ struct hisi_qm {
u32 sqe_size;
u32 qp_base;
u32 qp_num;
u32 qp_in_used;
u32 ctrl_qp_num;
struct qm_dma qdma;
@ -206,6 +207,7 @@ int hisi_qm_start_qp(struct hisi_qp *qp, unsigned long arg);
int hisi_qm_stop_qp(struct hisi_qp *qp);
void hisi_qm_release_qp(struct hisi_qp *qp);
int hisi_qp_send(struct hisi_qp *qp, const void *msg);
int hisi_qm_get_free_qp_num(struct hisi_qm *qm);
int hisi_qm_get_vft(struct hisi_qm *qm, u32 *base, u32 *number);
int hisi_qm_set_vft(struct hisi_qm *qm, u32 fun_num, u32 base, u32 number);
int hisi_qm_debug_init(struct hisi_qm *qm);

76
drivers/crypto/hisilicon/zip/zip_main.c
View File

@ -79,7 +79,6 @@
#define HZIP_SOFT_CTRL_CNT_CLR_CE 0x301000
#define SOFT_CTRL_CNT_CLR_CE_BIT BIT(0)
#define HZIP_NUMA_DISTANCE 100
#define HZIP_BUF_SIZE 22
static const char hisi_zip_name[] = "hisi_zip";
@ -87,39 +86,74 @@ static struct dentry *hzip_debugfs_root;
static LIST_HEAD(hisi_zip_list);
static DEFINE_MUTEX(hisi_zip_list_lock);
#ifdef CONFIG_NUMA
static struct hisi_zip *find_zip_device_numa(int node)
struct hisi_zip_resource {
struct hisi_zip *hzip;
int distance;
struct list_head list;
};
static void free_list(struct list_head *head)
{
struct hisi_zip *zip = NULL;
struct hisi_zip *hisi_zip;
int min_distance = HZIP_NUMA_DISTANCE;
struct device *dev;
struct hisi_zip_resource *res, *tmp;
list_for_each_entry(hisi_zip, &hisi_zip_list, list) {
dev = &hisi_zip->qm.pdev->dev;
if (node_distance(dev->numa_node, node) < min_distance) {
zip = hisi_zip;
min_distance = node_distance(dev->numa_node, node);
}
list_for_each_entry_safe(res, tmp, head, list) {
list_del(&res->list);
kfree(res);
}
return zip;
}
#endif
struct hisi_zip *find_zip_device(int node)
{
struct hisi_zip *zip = NULL;
struct hisi_zip *ret = NULL;
#ifdef CONFIG_NUMA
struct hisi_zip_resource *res, *tmp;
struct hisi_zip *hisi_zip;
struct list_head *n;
struct device *dev;
LIST_HEAD(head);
mutex_lock(&hisi_zip_list_lock);
#ifdef CONFIG_NUMA
zip = find_zip_device_numa(node);
list_for_each_entry(hisi_zip, &hisi_zip_list, list) {
res = kzalloc(sizeof(*res), GFP_KERNEL);
if (!res)
goto err;
dev = &hisi_zip->qm.pdev->dev;
res->hzip = hisi_zip;
res->distance = node_distance(dev->numa_node, node);
n = &head;
list_for_each_entry(tmp, &head, list) {
if (res->distance < tmp->distance) {
n = &tmp->list;
break;
}
}
list_add_tail(&res->list, n);
}
list_for_each_entry(tmp, &head, list) {
if (hisi_qm_get_free_qp_num(&tmp->hzip->qm)) {
ret = tmp->hzip;
break;
}
}
free_list(&head);
#else
zip = list_first_entry(&hisi_zip_list, struct hisi_zip, list);
mutex_lock(&hisi_zip_list_lock);
ret = list_first_entry(&hisi_zip_list, struct hisi_zip, list);
#endif
mutex_unlock(&hisi_zip_list_lock);
return zip;
return ret;
err:
free_list(&head);
mutex_unlock(&hisi_zip_list_lock);
return NULL;
}
struct hisi_zip_hw_error {