UbiquitousOS
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OpenCloudOS-Kernel
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Commit Message: Support 1024 processes simutaneously in the hct-mdev mode. 

Signed-off-by: Yabin Li <liyabin@hygon.cn>
Signed-off-by: yangdepei <yangdepei@hygon.cn>
This commit is contained in:
Yabin Li 2024-05-06 14:31:25 +08:00 committed by yangdepei
parent 0dfa39df10
commit c77b21d787
1 changed files with 8 additions and 3 deletions
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11
drivers/crypto/ccp/hygon/hct.c
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@ -1249,7 +1249,6 @@ static int hct_share_open(struct inode *inode, struct file *file)
return -ENOMEM;
mutex_lock(&hct_data.lock);
bitmap_set(hct_data.ids, 0, 1);
id = (unsigned int)find_first_zero_bit(hct_data.ids, MCCP_INSTANCE_MAX);
if (id < MCCP_INSTANCE_MAX)
bitmap_set(hct_data.ids, id, 1);
@ -1266,7 +1265,13 @@ static int hct_share_open(struct inode *inode, struct file *file)
mutex_unlock(&hct_share.lock);
file->private_data = private;
private->id = id << MCCP_INSTANCE_OFFSET;
/*
* At user space, each process is assigned a different number
* which cannot be 0, as the identifier for the process.
* The number is assigned by id, so the value of id needs to
* start from 1, and cannot be 0.
*/
private->id = (++id) << MCCP_INSTANCE_OFFSET;
INIT_LIST_HEAD(&private->head);
mutex_init(&private->lock);
@ -1890,7 +1895,7 @@ static int hct_share_close(struct inode *inode, struct file *file)
mutex_unlock(&hct_share.lock);
mutex_lock(&hct_data.lock);
if (id < MCCP_INSTANCE_MAX)
if (--id < MCCP_INSTANCE_MAX)
bitmap_clear(hct_data.ids, id, 1);
mutex_unlock(&hct_data.lock);