diff mbox series

[1/2] dmaengine: idxd: reformat swerror output to standard Linux bitmap output

Message ID 20230103165337.1570238-2-fenghua.yu@intel.com
State New
Headers
Series Expose IAA 2.0 device capabilities |

Commit Message

Fenghua Yu Jan. 3, 2023, 4:53 p.m. UTC 
  From: Dave Jiang <dave.jiang@intel.com>

SWERROR register is 4 64bit wide registers. Currently the sysfs attribute
just outputs 4 64bit hex integers. Covert to output with %*pb format
specifier.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Co-developed-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
---
 drivers/dma/idxd/idxd.h  |  1 +
 drivers/dma/idxd/init.c  |  2 +-
 drivers/dma/idxd/sysfs.c | 10 ++++------
 3 files changed, 6 insertions(+), 7 deletions(-)

Comments

Vinod Koul Jan. 18, 2023, 12:02 p.m. UTC | #1 
On 03-01-23, 08:53, Fenghua Yu wrote:
> From: Dave Jiang <dave.jiang@intel.com>
> 
> SWERROR register is 4 64bit wide registers. Currently the sysfs attribute
> just outputs 4 64bit hex integers. Covert to output with %*pb format

s/Covert/Convert

> specifier.
> 
> Signed-off-by: Dave Jiang <dave.jiang@intel.com>
> Co-developed-by: Fenghua Yu <fenghua.yu@intel.com>
> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
> ---
>  drivers/dma/idxd/idxd.h  |  1 +
>  drivers/dma/idxd/init.c  |  2 +-
>  drivers/dma/idxd/sysfs.c | 10 ++++------
>  3 files changed, 6 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/dma/idxd/idxd.h b/drivers/dma/idxd/idxd.h
> index f92f8ec83722..e449d905bea3 100644
> --- a/drivers/dma/idxd/idxd.h
> +++ b/drivers/dma/idxd/idxd.h
> @@ -654,6 +654,7 @@ int idxd_register_driver(void);
>  void idxd_unregister_driver(void);
>  void idxd_wqs_quiesce(struct idxd_device *idxd);
>  bool idxd_queue_int_handle_resubmit(struct idxd_desc *desc);
> +void multi_u64_to_bmap(unsigned long *bmap, u64 *val, int count);

This change does not belong to this patch, I dont know why this is here

>  
>  /* device interrupt control */
>  irqreturn_t idxd_misc_thread(int vec, void *data);
> diff --git a/drivers/dma/idxd/init.c b/drivers/dma/idxd/init.c
> index 564c025b9b7e..996bd3e4e50f 100644
> --- a/drivers/dma/idxd/init.c
> +++ b/drivers/dma/idxd/init.c
> @@ -425,7 +425,7 @@ static void idxd_read_table_offsets(struct idxd_device *idxd)
>  	dev_dbg(dev, "IDXD Perfmon Offset: %#x\n", idxd->perfmon_offset);
>  }
>  
> -static void multi_u64_to_bmap(unsigned long *bmap, u64 *val, int count)
> +void multi_u64_to_bmap(unsigned long *bmap, u64 *val, int count)
>  {
>  	int i, j, nr;
>  
> diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
> index c772172d4ceb..dae28509e6ed 100644
> --- a/drivers/dma/idxd/sysfs.c
> +++ b/drivers/dma/idxd/sysfs.c
> @@ -1506,15 +1506,13 @@ static ssize_t errors_show(struct device *dev,
>  			   struct device_attribute *attr, char *buf)
>  {
>  	struct idxd_device *idxd = confdev_to_idxd(dev);
> -	int i, out = 0;
> +	DECLARE_BITMAP(swerr_bmap, 256);
>  
> +	bitmap_zero(swerr_bmap, 256);
>  	spin_lock(&idxd->dev_lock);
> -	for (i = 0; i < 4; i++)
> -		out += sysfs_emit_at(buf, out, "%#018llx ", idxd->sw_err.bits[i]);
> +	multi_u64_to_bmap(swerr_bmap, &idxd->sw_err.bits[0], 4);
>  	spin_unlock(&idxd->dev_lock);
> -	out--;
> -	out += sysfs_emit_at(buf, out, "\n");
> -	return out;
> +	return sysfs_emit(buf, "%*pb\n", 256, swerr_bmap);
>  }
>  static DEVICE_ATTR_RO(errors);
>  
> -- 
> 2.32.0
diff mbox series

Patch

diff --git a/drivers/dma/idxd/idxd.h b/drivers/dma/idxd/idxd.h
index f92f8ec83722..e449d905bea3 100644
--- a/drivers/dma/idxd/idxd.h
+++ b/drivers/dma/idxd/idxd.h
@@ -654,6 +654,7 @@  int idxd_register_driver(void);
 void idxd_unregister_driver(void);
 void idxd_wqs_quiesce(struct idxd_device *idxd);
 bool idxd_queue_int_handle_resubmit(struct idxd_desc *desc);
+void multi_u64_to_bmap(unsigned long *bmap, u64 *val, int count);
 
 /* device interrupt control */
 irqreturn_t idxd_misc_thread(int vec, void *data);
diff --git a/drivers/dma/idxd/init.c b/drivers/dma/idxd/init.c
index 564c025b9b7e..996bd3e4e50f 100644
--- a/drivers/dma/idxd/init.c
+++ b/drivers/dma/idxd/init.c
@@ -425,7 +425,7 @@  static void idxd_read_table_offsets(struct idxd_device *idxd)
 	dev_dbg(dev, "IDXD Perfmon Offset: %#x\n", idxd->perfmon_offset);
 }
 
-static void multi_u64_to_bmap(unsigned long *bmap, u64 *val, int count)
+void multi_u64_to_bmap(unsigned long *bmap, u64 *val, int count)
 {
 	int i, j, nr;
 
diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
index c772172d4ceb..dae28509e6ed 100644
--- a/drivers/dma/idxd/sysfs.c
+++ b/drivers/dma/idxd/sysfs.c
@@ -1506,15 +1506,13 @@  static ssize_t errors_show(struct device *dev,
 			   struct device_attribute *attr, char *buf)
 {
 	struct idxd_device *idxd = confdev_to_idxd(dev);
-	int i, out = 0;
+	DECLARE_BITMAP(swerr_bmap, 256);
 
+	bitmap_zero(swerr_bmap, 256);
 	spin_lock(&idxd->dev_lock);
-	for (i = 0; i < 4; i++)
-		out += sysfs_emit_at(buf, out, "%#018llx ", idxd->sw_err.bits[i]);
+	multi_u64_to_bmap(swerr_bmap, &idxd->sw_err.bits[0], 4);
 	spin_unlock(&idxd->dev_lock);
-	out--;
-	out += sysfs_emit_at(buf, out, "\n");
-	return out;
+	return sysfs_emit(buf, "%*pb\n", 256, swerr_bmap);
 }
 static DEVICE_ATTR_RO(errors);