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dmaengine: idxd: reformat swerror output to standard Linux bitmap output 

SWERROR register is 4 64bit wide registers. Currently the sysfs attribute
just outputs 4 64bit hex integers. Convert 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>
Link: https://lore.kernel.org/r/20230303213732.3357494-2-fenghua.yu@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Dave Jiang 2023-03-03 13:37:31 -08:00 committed by Vinod Koul
parent 6fec8938b7
commit 34ca00662e
3 changed files with 6 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/dma/idxd/idxd.h
View File

@ -598,6 +598,7 @@ 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);

2
drivers/dma/idxd/init.c
View File

@ -388,7 +388,7 @@ 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;

10
drivers/dma/idxd/sysfs.c
View File

@ -1452,15 +1452,13 @@ 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);