diff mbox series

scsi: qla2xxx: Use a variable for repeated mem_size computation

Message ID Y7spwF8HTt0c0l7y@ubun2204.myguest.virtualbox.org
State New
Headers
Series scsi: qla2xxx: Use a variable for repeated mem_size computation |

Commit Message

Deepak R Varma Jan. 8, 2023, 8:38 p.m. UTC 
  Use a variable to upfront compute memory size to be allocated, instead of
repeatedly computing the memory size at different instructions. The reduced
instruction length also allows to tidy up the code. Issue identified using
the array_size_dup Coccinelle semantic patch.

Signed-off-by: Deepak R Varma <drv@mailo.com>
---
 drivers/scsi/qla2xxx/tcm_qla2xxx.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

Comments

Deepak R Varma Jan. 22, 2023, 7:18 p.m. UTC | #1 
On Mon, Jan 09, 2023 at 02:08:24AM +0530, Deepak R Varma wrote:
> Use a variable to upfront compute memory size to be allocated, instead of
> repeatedly computing the memory size at different instructions. The reduced
> instruction length also allows to tidy up the code. Issue identified using
> the array_size_dup Coccinelle semantic patch.
> 
> Signed-off-by: Deepak R Varma <drv@mailo.com>
> ---

Hello,
May I request a review and feedback comments on this patch proposal?

Thank you,
./drv

>  drivers/scsi/qla2xxx/tcm_qla2xxx.c | 13 ++++++-------
>  1 file changed, 6 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
> index 8fa0056b56dd..8024322c9c5a 100644
> --- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
> +++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
> @@ -1552,6 +1552,7 @@ static const struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
>  static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
>  {
>  	int rc;
> +	size_t map_sz;
>  
>  	rc = btree_init32(&lport->lport_fcport_map);
>  	if (rc) {
> @@ -1559,17 +1560,15 @@ static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
>  		return rc;
>  	}
>  
> -	lport->lport_loopid_map =
> -		vzalloc(array_size(65536,
> -				   sizeof(struct tcm_qla2xxx_fc_loopid)));
> +	map_sz = array_size(65536, sizeof(struct tcm_qla2xxx_fc_loopid));
> +
> +	lport->lport_loopid_map = vzalloc(map_sz);
>  	if (!lport->lport_loopid_map) {
> -		pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
> -		    sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
> +		pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", map_sz);
>  		btree_destroy32(&lport->lport_fcport_map);
>  		return -ENOMEM;
>  	}
> -	pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
> -	       sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
> +	pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", map_sz);
>  	return 0;
>  }
>  
> -- 
> 2.34.1
> 
> 
>
Himanshu Madhani Jan. 23, 2023, 6:41 p.m. UTC | #2 
> On Jan 8, 2023, at 12:38 PM, Deepak R Varma <drv@mailo.com> wrote:
> 
> Use a variable to upfront compute memory size to be allocated, instead of
> repeatedly computing the memory size at different instructions. The reduced
> instruction length also allows to tidy up the code. Issue identified using
> the array_size_dup Coccinelle semantic patch.
> 
> Signed-off-by: Deepak R Varma <drv@mailo.com>
> ---
> drivers/scsi/qla2xxx/tcm_qla2xxx.c | 13 ++++++-------
> 1 file changed, 6 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
> index 8fa0056b56dd..8024322c9c5a 100644
> --- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
> +++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
> @@ -1552,6 +1552,7 @@ static const struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
> static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
> {
> int rc;
> + size_t map_sz;
> 
> rc = btree_init32(&lport->lport_fcport_map);
> if (rc) {
> @@ -1559,17 +1560,15 @@ static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
> return rc;
> }
> 
> - lport->lport_loopid_map =
> - vzalloc(array_size(65536,
> -   sizeof(struct tcm_qla2xxx_fc_loopid)));
> + map_sz = array_size(65536, sizeof(struct tcm_qla2xxx_fc_loopid));
> +
> + lport->lport_loopid_map = vzalloc(map_sz);
> if (!lport->lport_loopid_map) {
> - pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
> -    sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
> + pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", map_sz);
> btree_destroy32(&lport->lport_fcport_map);
> return -ENOMEM;
> }
> - pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
> -       sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
> + pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", map_sz);
> return 0;
> }
> 
> -- 
> 2.34.1
> 
> 
> 

Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com <mailto:himanshu.madhani@oracle.com>>
diff mbox series

Patch

diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
index 8fa0056b56dd..8024322c9c5a 100644
--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
@@ -1552,6 +1552,7 @@  static const struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
 {
 	int rc;
+	size_t map_sz;
 
 	rc = btree_init32(&lport->lport_fcport_map);
 	if (rc) {
@@ -1559,17 +1560,15 @@  static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
 		return rc;
 	}
 
-	lport->lport_loopid_map =
-		vzalloc(array_size(65536,
-				   sizeof(struct tcm_qla2xxx_fc_loopid)));
+	map_sz = array_size(65536, sizeof(struct tcm_qla2xxx_fc_loopid));
+
+	lport->lport_loopid_map = vzalloc(map_sz);
 	if (!lport->lport_loopid_map) {
-		pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
-		    sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
+		pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", map_sz);
 		btree_destroy32(&lport->lport_fcport_map);
 		return -ENOMEM;
 	}
-	pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
-	       sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
+	pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", map_sz);
 	return 0;
 }